As a sonar technician it amazes me how accurate this video was, I never saw such a detailed video that show the little facts about a sonar, from how it works, types of emissions, main structure and even how different sonars have different emission sounds, amazing video dude keep up the good work.
That's wild... never thought of it like that. I've been swimming in the BVI, as a child and one time I jumped into the water and heard the most peculiar sound of my life. It was painful, it was incredibly high pitched. I stopped swimming and remarked about it to my parents. I asked them to jump in and hear it but they didn't want to get wet at that moment. So I did. The sound was still there, loud as ever. The next day... It was gone! That boat must have been miles and miles and leagues away. I'll never forget it but I just filed it under "weird stuff" and now, my friend, I think you've helped to solve this childhood mystery of mine! Thank you!
oh!!! when i was in mexico, we were hearing a little ringing sound underwater. we didn’t know what is was, maybe dolphins… but that would make any sense. but now i realise
The Canadian Navy is doing an underwater demo ex just down the coast from me this week, and besides using bubble curtains to absorb the sound of the explosions the Navy operation is overseen by an independent whale spotter who will shut everything down if whales or other large creatures are seen in the vicinity. It's nice to know these issues are being noticed.
Us 2 the south of ya don't seem to care or more focused on how it helps us & not the disadvantages of its use. Mabe we will learn 1 day. But prob be 2days 2 late.
Keep in mind 196 decibels is the maximum possible sound in air (since the peaks would have 2xatm and troughs would have 0 pressure). In water it can go way higher, but 235 dB is just insane
I believe it's not, since you still can pump on the "positive" scale of pressure. Yes it won't be symmetrical but still you may put more energy into the wave which is decibels about at the end of the day. Not sure if you consistently can do these blasts in a consistent periodic manner though but at some frequency range (as function of peak pressure) you can I think
@@1.618-g9z 0 atmospheric pressure is a literal vaccum. You can't go below it because there are no molecules left to remove. Heat is very similar situation. Stars can go into the 10s of million Kelvin, but nothing goes below 0 Kelvin... technically nothing can achieve exactly 0 Kelvin either only extremely close. The Kelvin scale is just Celsius with 273 added to it 0 Kelvin = -273 Celsius
@@Derekzparty Never thought of it like that. Some of my hobbies and past military experiences alluded to negative pressures. Take thermobaric warheads for instance, they essentially create a vacuum that is instantly filled with the surrounded atmosphere. This "negative" pressure is the main mechanism for injury in their design as the atmosphere around you accelerates towards the vacuum. Just semantics in the wording.
I served on navy ships capable of sonar and even inside the ship you can hear the sonar noise at a decent loudness. It's scary to think divers hearing it.
I was on a ship that didn't have sonar, but was moored across the pier from a DDG. One night I was standing POOW, when suddenly I hear the rising whistle-chirp. I was like "what the hell is that?" OOD was a Chief who'd been in the Navy for a minute, said that was the... whatever it's called, standard? ping from a DDG's sonar. I can't imagine they were blasting it too loud, being moored up at base, probably some annual PMS check pushed to the middle of the night or something, but it was still more than loud enough to propagate through the air and across the pier to where I was (or maybe it went through the hull, idk)
That recording of actual sonar ping helped me further realize just how scary naval work can be, especially in the military. Not only is the sound itself unnerving, but imagining hearing that in a pressurized tube underwater knowing that it might be an enemy about to blow the walls around you in…
If they can "see" you, you can "hear" them LONG before that takes place. You know where they are (bearing), but weapons may not have the range needed to engage.
@@RocketRoberts keeping in mind that I know NOTHING about submarine warfare or any nation’s naval practices, my comment was more getting at the fact that sonar alone doesn’t tell you WHO the other vessel is. I’m sure there are radio verifications, known schedules, etc. to help minimize confusion and friendly fire, but I would assume that there can still be a bit of uncertainty when sonar returns an unidentified vessel on scope and they ping you back.
@@OneBiasedOpinion once, on station somewhere in the north Atlantic, we started hearing what sounded like explosions coming from overhead. Took a few minutes for control to send out the word that is was just a Norwegian vessel doing ocean floor mapping🤦🏽♂️.
I remember hearing an active sonar ping while swimming around the reefs in Maui. It sounded so mysterious and kind of haunting. Definitely not like the “ping” in the movies, but more like a sweeping series of computerized beeps
@@theoldatlasyou have to be fairly close to the sonar for that to happen, like inside a km, they won't be firing pings close enough to where most people are swimming to actually cause injury
When I was working on the USS Theodore Roosevelt used to hear a few different pings, all similar to the SQS-26 played here. You could hear it all the way in up to deck 1, hangar bay level, but only inside compartments. The deeper into the ship you went, the louder it was. Was told its the destroyers pinging off the carrier for various reasons, including discouraging unfriendly subs and trying to find our sub just in case they weren't being stealthy enough. The carrier rarely activates active sonar because they dont want to be pinpointed, so the destroyers in the surronding 100 sq miles do the seeing for it
Ever thought about how lame most commenters on RUclips are? Arguing over the most little things is truly a lot of peoples talent 💀 watch my reply get attacked in some way lmaooo Not towards you though mostly replies and that
One good reason for the carrier operating its sonar is not to find the sub, but to HELP the sub. The submarine would be able to not only locate its friend, but the sonar would “illuminate” everything around the carrier and its group quite handily, and not give the location of their underwater protector away. The sun would use the data from the carrier’s returns to see the enemy, and not activate its own sonar, which would give it away instantly. For quite some time now, passive listening has become the best way to track other seagoing objects. Sonar operators can tell the difference between “biologics” and man-made craft quite easily. That’s why subs are made to be so quiet.
I feel like… I’ve been kidnapped by terrorists and am being tortured by being forced to learn obscure trivia until I can’t take it anymore and give in to their demands. It’s definitely unique, but just unnerving enough that I can never get more than a few minutes into one of these videos.
Audio Engineer here, just wanna give massive props to the amount of research you did on the technicalities of sound, it’s structure, and how it travels. For a video being about a sound that kills you, you did incredible with every aspect of information you provided.
At 1:50 the masked presenter claims that +10 dB means "it's 10 times more powerful". I'm not sure what he is trying to mean by this. Technically, a +6 dB gain = a doubling of the volume. In terms of human perception, however, it takes +10 dB for a doubling of the same. This fact is well-established in Psycho-acoustics. The math is based on the Inverse Square Law, which applies to Point-source propagation. I'm an electro-acoustician. My specialty is Sound Reinforcement Systems Engineering. Be that as it may, I'm no specialist where the medium of dissipation is water.
All military sonars have one thing in common. They all have a frequency modulated slide going up. In the sea there are different layers that sound can bounce off so in order to pierce these layers in depth they use what’s called an FM slide. It’s very technical and to long to explain in detail but if you look on a sound graph it’s a up slide on the graph and each unique slide is unique to each navy so when a warship or submarine hears the FM slide you can tell which navy it has come from.
As a 26CX technician, I have to say that this is a pretty good video. As a side note, I had divers working on my ship one night and a ship on the next pier went active. The divers were extremely unhappy.
@@noktu It's funny reading comments like this and to imagine how boring their lives must be. Brother, a huge majority of people do live more interesting lives than you, just accept it.
I remember being on a sub and being actively pinged by a destroyer. It was physically painful, even at a distance, even with the transition from hull to the air inside the boat.
@@i-love-comountains3850 There was a very shallow layer below us at the time, so we stayed shallow above it, and the active pulses just bounced around between the surface and this layer, jumbling up any returns the destroyer was getting and making us very difficult to find.
I didn't realise active sonar was so powerful, I just assumed that incredibly sensitive instruments were used to pick up the reflections of a rather mundane ping. For reference a space shuttle launch was around 170dB. That means active sonar (at 240dB) is 10 million times louder than that!
It's worth nothing that you can't compare SPL between water and air because of differences in the reference levels (sound in water is dB re 1uPa and sound in air is dB re 20uPa) and the density/sound speed of the medium. If you're just comparing perceived intensities the difference works out to about 61.5dB. So that active sonar at 240dB (in water) is really only as "loud" as a ~180dB sound in air. (Don't get me wrong, it's still loud! But it isn't going to turn you into paste or anything...)
@@partyofgaming1 depends on how far away you're to the angy boi. If you're close to it, you probably hear it like a very loud thunder struck something close to your house. Source: I live near a volcano, I know how they sound. But, since toa is in the middle of Sunda strait, and the largest explosion is happened before microphone was a thing. I would expect it'll be around 170-190 db on its mountain level.
Yeah, it’s a logarithmic scale, like earthquake magnitude. That’s what makes loud sounds so dangerous, we perceive loudness increases as linear (going from 80-90 decibels feels the same as 70-80) but they’re really exponential.
@@sweethomealabama4381 I’ve no idea what VEI is, but cool. We can also compare it with the ph scale which is also logarithmic and indicates a 10X decrease in H+ for every unit decrease
I'm still sceptical 1 dB being "twice as loud". It might have more volume over the frequency spectrum, but it can't be purely the pressure of soundwaves. As Mr. Slav said: A Sonar is 10'000'000'000x (BILLION) as loud as an jet engine!!! that would literally just tear any human made material apart....
@dusky6280 Oh, so, you're suggesting things can only be obvious if researched. So even though it's obvious the sky is blue, I should read about it to find that out
Damn, just listening to the SQS-26 made me wince in pain. Even through a monitor it's painful to listen to, I can only imagine how painful and terrifying it'd be in the water.
And it sounds haunting af, imagine going for a quick dive somewhere and hearing this while doing so; I would get the F outta there and stay out of the water for at least 24 hours
One point of correction: Modern submarines hardly ever use their active sonar. Surface warships use it frequently, but submarines basically only use it to navigate through super complex environments without crashing into things. Above all else, submarines must hide. Transmitting a sound at 200dB+ lets everybody know where they are
Would it not depend on the type of submarine? Military's submarines are certainly all about stealth, but there are also civilian/research subs which sonar would be relevant to
@@suibora civilian vessels have some sonar systems onboard but not anywhere close to military systems. They usually use echo location equipment to avoid contact with other vessels or the sea floor. Which wouldn't require them needing 235 dB of sound to do so. Their not trying to find enemy submarines miles away like we are :)
Honestly, this makes sonar so much more genius than we thought. It keeps submarines safe from infiltration via divers like you see in games and movies.
The loudest sound I had ever experienced was at a Death Grips concert and they played the song Turned Off. When the loud fuzz that's in that song kicked in it literally blew past my earplugs and it was deafeningly loud. Been to many concerts but that was by far the loudest noise I'd ever experienced.
For me it was when I saw Sunn O))) live. They were playing a show in a medium size indoors venue in Copenhagen and it was awe inducing to say the least. For those that do not know they get their name from the amplifiers they use, the Sunn Model T's, which is a VERY loud amplifier from the 70's. One on its own is enough to make your internal organs rattle, and well Sunn O))) uses about 6-8 of them at the same time through about 12 cabs + about 6 bass amps on stage between the 2 guitarists and the bassist/synth guy. They easily hit 120dB and above, and you typically experience that for about 60-90 minutes. It's hard to explain how being at one of their shows is like but I have never experienced sound as intensely or viscerally as at that show, that's for sure.
somehow i find random comments about death grips where i least expect it and it's always some sort of final destination, premonition type warning. already bought the tickets though so wish me luck
I’m a NC native and back in ‘05 there was an incident where dead and dying whales and dolphins were washing up on the shores of the Outer Banks. Researchers came to the conclusion that the most probable cause of the issue was active sonar from Navy testing. I wish there was something in place to better protect our beautiful and endangered whales and dolphins.
If you have bones Vibrations of that frequency are going to be hell. Science class Time!!! What Element inside of you is most subseptible to being Rattled apart from Vibrations? Hint, the one that is responsible for fusion.
I was a Sonar Tech in the Navy. First of all, the “transducers” you’re referring to are a stacked array or piezoelectric crystals (ceramic). You push a massive current into them to make them “tweak”, then you release the current and the ensuing sound is the “ping” you hear. Also, the Navy never bounces sonar off the bottom, unless they are depth sounding. Sound is lazy by nature. It always wants to go slower. Sound travels 3 1/2 times faster underwater than it does through the air. And there are three things that affect sound underwater. Temperature, salinity, and pressure. These three things always increase the speed of sound underwater. So when a ship actively transmits, the sound travels in a downward direction in search of a submarine. As the sound waves go deeper through the water, the pressure begins to build, and the sound starts to speed up. But sound is lazy, and it wants to go slower, so it curves upward towards the surface again. As the sound gets closer to the surface, the temperature of the water starts to go up, and the sound starts to speed up again. And since sound is lazy, and it wants to go slower, the sound curves back downward. And this cycle repeats, depending on the conditions. These would be ideal conditions to actively track an enemy submarine. It is called a ”sound channel axis”. And I’ve never heard anyone picking up submarines, or any other object with an active transmission from hundreds of miles away. However, with the passive systems like the TACTAS (tactical towed array system) you can passively detect shipping traffic (prop rate, blade rate, and auxiliary components) from over 100 miles away in the right conditions.
Ultrasound's use the same piezoelectric crystals to do the same thing in a body. You dont want to go higher than about 130mW or you can make bubbles in their blood. We made some arrays that could sense the direction of your bloodflow and the computer would visualize it. Cool and also kind of freaky.
I've been to rock concerts and monster truck rallies but no sound has ever been louder than huge claps of thunder directly over my house. That shit makes the world feel like it's exploding. But the most painful sound I have ever experienced was the shrill burst of tinnitus in my ears after jumping into water off a bridge. Kept going for several hours with an excruciating pain that wouldn't go away. Turns out I gave myself barometric trauma in the ears and came close to blowing out my eardrums... all from jumping into water from a height that everyone else I was with that day was fine jumping from. I can only imagine sonar would feel SO much worse.
I think i have a cure for what you are suffering from 👍🏻👍🏻 and it has been used in my culture for ages .. i hope you recovered but in case you did not , then i might be helpful.
If you tap the back of your head by crossing your index fingers over your middle fingers and then flicking your index finger back into position (making it slide off of the middle finger and hit beside the soft area at the back of your head) the tinnitus will go away
As a former Sonar Technician I applaud your accuracy in this video. Fantastic! Story time - the ability to steer and focus the active beam allowed for some sassy sonar techs (me 🤪) to figure out how to aim the active beam backward directly down the centerline of the ship, turning the whole ship into a resonance chamber. I'll let your imagination tell the rest of that story. (No one was ever hurt lol, but very annoyed)
Dude literally compares decibels in air with decibels in water, the most basic mistake that leads to misunderstandings like the one this video is based on, and you call it "accurate" lol. I guess this isn't important info for a sonar tech.
This genuinely scares me. I hate the concept of really big machine things that could just.. kill you by having it pointed at you or being right next to something when someone turns it on. I could have someone tell me this sonar system is completely broken, disconnected from power, turned off and is literally impossible for it work. Yet I would still probably panic if they tried to get me to stand right next to it.
NOTE: the decibel reference value is different by 61.5 dB for sounds in water vs air. So the sound intensity of 100 dB in air is actually equivalent to 161.5 dB underwater and vise versa. This causes confusion about "melting your brain" because the underwater numbers appear incredibly more powerful than the values we're more familiar with on land.
That makes sense. I know that 235dB sound in air is impossible, and assumed the same for water, so I thought this RUclipsr was just exaggerating when he said that number.
@@alexandernachev3471 20 * log10(2) = 6.02.... so there are amplitude dB and power dB, which differ by a factor of 2 (since power is amplitude squared). I can never keep it straight, and will occasionly say "that's a 1 Bell increase" and ppl go "what is one bell", and I'll say "uh, duh? 10 deci-Bell, 100 centi-Bell, and so on". Just to troll the metric system.
so I had to look that up. Not only do they use a different definition of 0 dB (1 uPa vs 20 uPa), to convert from mean pressure to mean power, you have to multiply by the acoustic impedance, which appears to be related to the density (800x) times the speed of sound (4.3x) ==> 3500 = 36 dB, so you then add the square of the reference 20 * log10(20) = 26, for a total of 61.5 . Totally not confusing.
Now the real horror is when you hear that sound. But you are just doing whatever you are normally doing, with no way of knowing what is causing it as you try to avoid your brain melting. It’s like falling to your death. The horror of inevitability. Cosmic horror. Edit: whoops. Cosmic horror doesn’t count sorry Edit: Cosmic horror might count. I am very confused about the situation I am in right now.
It does actually make me a little sad to think just how much damage has been done to ocean wildlife by sonar. The ocean is very, *very* large, but given how far sonar travels, we may have killed entire ocean ecosystems with our ships without even knowing it.
At the swimming pool my friend and me would go to opposite ends of the pool and under water to the floor and shout stuff at each other and hear it, when it was really loud and busy and even though it was muffled and we thought that talking under water was gibberish. Then I would tap my finger nail very lightly against the floor tiles and he'd repeat the tapping pattern back to me, even with the slightest tap he could clear ly hear it. Above water at the surface we wouldn't hear each other if we shouted cos it was busy n load and indeed he wasn't near-by either.
I have severe Tinnitus(since I was 5). I hear that sound 24/7/365. I coped using opiates, benzos, and can not sleep unless there is background noise. I have had life altering depression and I cry randomly for all my life. I still think I am strong for lasting this long(I am 42). I enjoy your videos thanks and apologies, I just rarely hear anything comparable to the frequencies from my ears(damaged, I think, by getting tubes in my oft infected ears as a child).
You are very strong! I deal with depression by distracting myself with learning about the universe.. If you need a hobby get into cosmology, it's an amazing universe out there
Two things: First, this technology, albeit damaging, is absolutely an insane feat of engineering. Second, I find it so interesting how vibrations are everything in the universe. They’re the key to the secrets.
Jet engines sound is amazing. The fact you can hear an airliner passing overhead is insane. The plane is around 30,000 ft in the air and you can hear it clearly.
@@baronnuuke7821 No. I live out in the country. The closest airport is over 50 miles away. While they may not be at 30,000 ft they aren’t on approach or recently taken off. It’s definitely not loud and if you weren’t paying attention you could easily tone in out.
The sound the Sonar makes is terrifying imagine diving at low depth’s all on your own in the darkness when you start hearing that! Great video you really explained well what a Sonar is and how it works. 👍👍
Yea how is this not more of a problem? Commercial divers diving deep can't surface. They have to go through days of depressurization and would just die down there if sonar was used. And there's no way these ships know who's in the water in a 100 mile radius at any given moment.
I was surprised how horrible it was. I can imagine some whales hearing that and choosing death on the beach rather than meeting what ever makes that noise.
There's a video out there where a guy is having a sort of Ted talk to a small seeming dining area. He was a marine driver/biologist kind of expert and his talk was about whales. He said that when you are interacting with them, their sonar starts to warm you up. You don't want to be in front of them, either. Something about lethality lol
This is very enlightening, I had literally zero idea how sonar worked. And now I feel like I'm completely caught up with another technology. Very comprehensive information as always. Thanks you brother
I was diving near a naval destroyer when they went from passive to active and that was the most intense thing ive ever experienced. I could feel it in my brain. The Navy screwed up, they were supposed to be denied the ability to use active sonar without pulling the divers from the area. We were working late and shift change didn't mention the divers.
Holy sh**t bro, loud enough to make porridge with your brain, so intense that the water boils by itself, even the biggest living being is so scared that rathers to die, his power is over 3000! You can almost hear it from the coast of another country and not even full power and you are telling that a little shiet, not the strongest, not the greatest, the fastest, supposedly the most intelligent by far but not always noticeable... survived to tell it? *Well shiet man, awesome*
don't you think they would've come up with something better by now that doesn't kill everything around it?… Oh wait this is the military we're talking about…🤨
@@HystericalHuntress you cant, but you can use lasers to do the same as sonars, its more expensive but its possible, the problem is no one wants to use more money to do the same thing and "save some animals etc"
@@HystericalHuntress But you can outlaw murder, the army is basicaly killing all life around them including humans. Guess laws don't apply when it comes to government and army
@Snapshot it is, there are already laser radars, Police use them and they dont burn anything, Im not talking about normal light lazers, Im talking infrared ou ultra violet, kiddo, the only thing That can happen is make someone blind if it in the eyes, in water the lasers Will take very long to burn someone and when leaving the water they all Change Direction so it loses all power, I think its worse killing a person than blinding it, but its justy opinion, airplanes use laser radar to calculate altitude, a lot of Cars use laser radar to emergency brake for you, you just need a more powerfull One and more of them, or One with more laser surface area, it is possible, kiddo
Wow! This happened to me today when i was freediving here in sharm el sheikh in Egypt. I heard the last sound he played repeated about every 30 seconds. Needed to be underwater to hear it. Thought it was a whale or something first as i havent heard anything like this before but it kept on pinging and it was awesome to look out into the blue and imagine out there a submarine was there
@@RimjobHimself most likely a ship over the horizon, submarines usually don’t active ping because it gives away their position due to the sheer amount of noise active sonar generates. any submarine or ship that was even remotely nearby would have their passive sonar light up instantly, and considering submarines are usually designed with stealth in mind, most active sonar comes from ships that are looking for something and don’t need to worry about being sneaky about it.
@@RimjobHimself He did say there was an instance of guy hearing a ping from 160 km ,so it's safe to say it was pretty far away ,any closer and you might have ended in the hospital if not worse
The actual sound he played at the end is bone-chilling itself, even if it wasn't powerful enough to tear you apart. What we as species cause the other inhabitants of Earth is truly appalling...
Live sound engineer here. All hearing damage is permanent as minuscule as it is at lower pressure levels. Yes at 135db you need to wear protection for any amount of time. But also above 85db you should wear protection if you're going to be exposed for longer than 15min. Most live shows start at 90db and can be as loud as 115db. So you should always wear ear protection at concerts if you still want to be able to hear someone speak to you when you're 50.
What? Huh? Sorry, I am 40, not 60. I was born deaf. Had my hearing for the first time when I was 4, but it was a work in progress. Had 6 surgeries on the ear drums and canals. By 8th grade, it was deemed successful. I have trouble hearing lows, but I can obviously feel them. I have trouble with extreme highs and quiet voices.
Exactly people almost never mention it, but it's decibels x time, not just decibels. That's why you can shot one shot with ak without ear pro and be fine, but try burst and tinnitus guaranteed
I'll add that the OSHA limits were designed for workers experiencing daily exposure 5 days a week for 40 years. As Roni92pl pointed out exposure causing hearing damage is cumulative like sunlight is to the skin so the average person attending a live sound show once or twice a year isn't doing all that much damage to themselves as long as volume levels are within reason. Always bring earplugs for concerts just in case but let your ears let you know if you need them, if you are in any pain, you are doing instant damage to your ears and use your plugs, if it's not uncomfortably loud, 1 or 2 concerts a year isn't going to be all that damaging. I'll add also that the OSHA guidelines are also measured in dBA (A scale, meaning 200hz and up). There is no data on hearing loss afaik for frequencies below that. 105 dBA is about all my ears can handle before they start to hurt (>200hz) but the fun doesn't start at 50 hz (bass) until you hit 130 dB's which my ears have no problems handling.
There is no such thing as sound "only affecting objects and not humans". Sound is a vibration, even if you can't hear a sound becuse it's too high or too low frequency, it's still affecting you.
I love the way you say "Underwater" with your accent. Those rolling R's in that word just sound so incredibly comfy to my ears, thank goodness for such a soothing sound while imagining my whole head being ripped apart by a sonar ping D:
Played Barotrauma with the "Realistic Sonar mod" and that's how I found this video. Nothing like getting 20 afflictions while your character suffers and their brain/body is shredded from sound. Was outside sub and friend turned active sonar on to check surroundings and the "RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRREEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE" as my character exploded was fun ☠
Barotrauma has a Real Sonar mod that models damage done to creatures (players included) from active pings. The distance falloff is significantly shorter and the damage is not quite as insane, but it's still alarming to get ping'd. They use the sonar sounds from the SQS-26 too.
You’re just minding your business, doing mudraptor things then *SCREEEEECH* The most annoying sound you heard ever appears. Yeah, I’d be pretty pissed off at whoever did that to me too.
The loudest sound i ever heard was a huge thunderstorm that fell 20 meters away from me while camping. The tent had iron bars, but luckily, there was a nearby old tower with a huge metal bar to atract any thunderstorm.
When I was younger a lightning struck during the night. I am unsure whether it struck our house or the lawn outside but it was the loudest thing I ever experienced. The whole house shook. Next morning the Internet had been completely fried.
I was on a guided missile destroyer (DDG) while serving in the Navy. our sonar system used to put me to sleep. I would hear it while in the berthing spaces. Whales would also be attracted to the sonar and moving ship. they would travel side by side with the ship. I never thought for a second that the sonar was harming them. in fact I thought they liked it.
some whales comunicate with sonars, so they were probably just confused (as in: "wow, what a wierd metal whale. Where you going buddy? Why are you all alone??")
I served on the Kitty Hawk in the late 1980's. While transiting the Indian Ocean we could hear the sound of active sonar in our bething area, and the engine rooms - in breif bursts, since those spaces were technically under water. Strange sounding indeed.
I have trouble sleeping and I found myself very calmed down and almost ready to fall at the end of you video. Your voice is very cool to listen to and the topic was fascinating
Had an f-15 goin more than 100dc, permanent eardamage. It was flying above me at 30ft at full afterburner and pulling up at me so i melted and go deaf at the same time.
Not only subs but naval ships as well. Well, not fishing ships. Even if some fishing ships have sonars, they are pretty weak compared to military warships because of their size which can fit a colossal sound canon, and another thing is that fishing ships do not need such a giant sonar, since they want to see what's underwater, but not kill the creatures. Still, a lot of rare sea creatures are rare because of these sound canons and one day, they'll be all extincted. I'm sure with the tech we have now we could use different ways to detect stuff underwater, like using LIDAR for example, although this would mean blasting very high powered beams of light just so it can reach the bottom of the ocean, but the radius would be significantly lesser than blasting an sound canon that can be heard from the US to the other side of the atlantic ocean.
In call of duty ghosts there's a diving mission where you use termite to cut through a old ships hull before attempting to plant a charge on a modern destroyer. It uses active sonar and the entire time you are trying to seek cover to avoid getting killed by a ping. This isn't by any means realistic but it is the first time I've learned active sonar is actually lethal
![Cody Johnson - I'm Gonna Love You (with Carrie Underwood) [Official Music Video]](http://i.ytimg.com/vi/yy9PuYMU29g/mqdefault.jpg)
As a sonar technician it amazes me how accurate this video was, I never saw such a detailed video that show the little facts about a sonar, from how it works, types of emissions, main structure and even how different sonars have different emission sounds, amazing video dude keep up the good work.
oh wow, thanks, means a lot to me
As a sonar ping I confirm this is true
As a sonar itself i confirm this is true
@@susysusy1345 i now know your location
@@Ardenict As a submarine i can confirm this is true
That's wild... never thought of it like that. I've been swimming in the BVI, as a child and one time I jumped into the water and heard the most peculiar sound of my life. It was painful, it was incredibly high pitched. I stopped swimming and remarked about it to my parents. I asked them to jump in and hear it but they didn't want to get wet at that moment. So I did. The sound was still there, loud as ever. The next day... It was gone! That boat must have been miles and miles and leagues away. I'll never forget it but I just filed it under "weird stuff" and now, my friend, I think you've helped to solve this childhood mystery of mine!
Thank you!
Was it a bit like the sound of 9:42? Did it last long or shortly?
oh!!! when i was in mexico, we were hearing a little ringing sound underwater. we didn’t know what is was, maybe dolphins… but that would make any sense. but now i realise
I got really bad tinnitus and affected me so much from screaming high pitched metal on a lathe, this would be nightmarish
Could be just the fan of a boat engine makes like a high pitched sound underwater and you can hear that miles away from the boat
@@magical5181 if that was the sound im pretty sure they'd be dead or deaf
160 km and it can be still heard, it's incredible
Not just "listened". It would be insanely loud
02:45 - did someone say *Davie504* ?
100km is still around 140 to 160 decibels
Not just listened, that thing hits you.
And killing you
The Canadian Navy is doing an underwater demo ex just down the coast from me this week, and besides using bubble curtains to absorb the sound of the explosions the Navy operation is overseen by an independent whale spotter who will shut everything down if whales or other large creatures are seen in the vicinity. It's nice to know these issues are being noticed.
Other militaries should learn from that example
Happy to hear this!
Us 2 the south of ya don't seem to care or more focused on how it helps us & not the disadvantages of its use. Mabe we will learn 1 day. But prob be 2days 2 late.
@@cnone3785I agree!! The U.S. needs to get itself together in every aspect, if you ask me
With such a huge radius how can they even know what’s within range?
Keep in mind 196 decibels is the maximum possible sound in air (since the peaks would have 2xatm and troughs would have 0 pressure). In water it can go way higher, but 235 dB is just insane
I believe it's not, since you still can pump on the "positive" scale of pressure. Yes it won't be symmetrical but still you may put more energy into the wave which is decibels about at the end of the day. Not sure if you consistently can do these blasts in a consistent periodic manner though but at some frequency range (as function of peak pressure) you can I think
anything about 196 db is just an explosion
That's interesting, I've never considered it. Why can't pressure be negative?
@@1.618-g9z 0 atmospheric pressure is a literal vaccum. You can't go below it because there are no molecules left to remove.
Heat is very similar situation. Stars can go into the 10s of million Kelvin, but nothing goes below 0 Kelvin... technically nothing can achieve exactly 0 Kelvin either only extremely close.
The Kelvin scale is just Celsius with 273 added to it 0 Kelvin = -273 Celsius
@@Derekzparty Never thought of it like that. Some of my hobbies and past military experiences alluded to negative pressures. Take thermobaric warheads for instance, they essentially create a vacuum that is instantly filled with the surrounded atmosphere. This "negative" pressure is the main mechanism for injury in their design as the atmosphere around you accelerates towards the vacuum. Just semantics in the wording.
I served on navy ships capable of sonar and even inside the ship you can hear the sonar noise at a decent loudness. It's scary to think divers hearing it.
The first time I heard sonar in berthing it was awful
@@camina0464 tf in gods name is that pfp
I was on a ship that didn't have sonar, but was moored across the pier from a DDG. One night I was standing POOW, when suddenly I hear the rising whistle-chirp. I was like "what the hell is that?" OOD was a Chief who'd been in the Navy for a minute, said that was the... whatever it's called, standard? ping from a DDG's sonar. I can't imagine they were blasting it too loud, being moored up at base, probably some annual PMS check pushed to the middle of the night or something, but it was still more than loud enough to propagate through the air and across the pier to where I was (or maybe it went through the hull, idk)
@@TheAngelOfDeath000 you have an anime pfp that’s even worse
@@Jack-gy4dk Just put them both outside of the submarine
Damn never thought I’d be afraid of something so infinitely rare
It's the new quicksand!
It’s like the new “the sun will die in 1 billion years”
Not as rare as y'all think.
Rare for us, maybe. But for fish, not quite so rare.
I never felt so bad for fish. I wonder just how many die from this each year?
@@minimalgrammar1276 yea what the hell are they talking about
Most people: oh look its the sonar on the ship
Me: S H I P B A L L S
that's wild
"Still not as loud as a sneezing father"
I'm telling you father sneeze litterally can destroy an entire universe if they go 100%
Funniest and truest thing anyone has said.
My grandfather's sneeze is equivalent to the merger of two super massive black holes.
confirmed, it cause the last end of the world scenario. The SCP foundation have to move across to this dimension.
And they're just using 0.0000000000000000000000001275192856290856 of their power
@@aliceberethart Same here, my grandfather's one is equivalent to a Big Bang
they only used 0.0000021% of their sneezing strength
That recording of actual sonar ping helped me further realize just how scary naval work can be, especially in the military. Not only is the sound itself unnerving, but imagining hearing that in a pressurized tube underwater knowing that it might be an enemy about to blow the walls around you in…
If they can "see" you, you can "hear" them LONG before that takes place. You know where they are (bearing), but weapons may not have the range needed to engage.
@@RocketRoberts keeping in mind that I know NOTHING about submarine warfare or any nation’s naval practices, my comment was more getting at the fact that sonar alone doesn’t tell you WHO the other vessel is. I’m sure there are radio verifications, known schedules, etc. to help minimize confusion and friendly fire, but I would assume that there can still be a bit of uncertainty when sonar returns an unidentified vessel on scope and they ping you back.
@@OneBiasedOpinion True. And in the real ocean, there's a ton of noise that makes detection often quite difficult.
@@OneBiasedOpinion once, on station somewhere in the north Atlantic, we started hearing what sounded like explosions coming from overhead. Took a few minutes for control to send out the word that is was just a Norwegian vessel doing ocean floor mapping🤦🏽♂️.
@@beeyah805 I’m sure they were not-so-pleasantly surprised to see a Navy submarine underneath them as well. :)
I remember hearing an active sonar ping while swimming around the reefs in Maui. It sounded so mysterious and kind of haunting. Definitely not like the “ping” in the movies, but more like a sweeping series of computerized beeps
Yes, that’s the modern sonars that use different frequencies and modulation than the WW2 pingers.
WW2 era sonar worked differently so yeah it sounds different
Lucky your brain didn't melt😮
@@theoldatlasyou have to be fairly close to the sonar for that to happen, like inside a km, they won't be firing pings close enough to where most people are swimming to actually cause injury
I would lose my shit if I heard anything as creepy as that sonar at then end there. OMG that is a blood chilling sound.
When I was working on the USS Theodore Roosevelt used to hear a few different pings, all similar to the SQS-26 played here. You could hear it all the way in up to deck 1, hangar bay level, but only inside compartments. The deeper into the ship you went, the louder it was. Was told its the destroyers pinging off the carrier for various reasons, including discouraging unfriendly subs and trying to find our sub just in case they weren't being stealthy enough. The carrier rarely activates active sonar because they dont want to be pinpointed, so the destroyers in the surronding 100 sq miles do the seeing for it
Ever thought about how lame most commenters on RUclips are? Arguing over the most little things is truly a lot of peoples talent 💀 watch my reply get attacked in some way lmaooo
Not towards you though mostly replies and that
that is so cool. just learned a lot at 7am thanks for that.
not the government being like 👀👉 are you stealth enough? i dont believe you, im checking.
One good reason for the carrier operating its sonar is not to find the sub, but to HELP the sub.
The submarine would be able to not only locate its friend, but the sonar would “illuminate” everything around the carrier and its group quite handily, and not give the location of their underwater protector away.
The sun would use the data from the carrier’s returns to see the enemy, and not activate its own sonar, which would give it away instantly.
For quite some time now, passive listening has become the best way to track other seagoing objects.
Sonar operators can tell the difference between “biologics” and man-made craft quite easily.
That’s why subs are made to be so quiet.
When I served on the Midway I heard the same thing. It's pretty fascinating
@@bforce3824Thank you for your service!🇺🇸🫡
I really love the creepy and yet educational vibes of your videos. It's really unique!
Yes absolutely!
I feel like… I’ve been kidnapped by terrorists and am being tortured by being forced to learn obscure trivia until I can’t take it anymore and give in to their demands. It’s definitely unique, but just unnerving enough that I can never get more than a few minutes into one of these videos.
@@fatcerberus thats your problem
@@sa.04 umm... I never said it wasn't?
dude makes 16 k clicks in 1 hour, insane
Audio Engineer here, just wanna give massive props to the amount of research you did on the technicalities of sound, it’s structure, and how it travels. For a video being about a sound that kills you, you did incredible with every aspect of information you provided.
Where do you work?
@@TM-fx5le Not work, Graduate in March for a Music Production degree
At 1:50 the masked presenter claims that +10 dB means "it's 10 times more powerful". I'm not sure what he is trying to mean by this. Technically, a +6 dB gain = a doubling of the volume. In terms of human perception, however, it takes +10 dB for a doubling of the same. This fact is well-established in Psycho-acoustics. The math is based on the Inverse Square Law, which applies to Point-source propagation. I'm an electro-acoustician. My specialty is Sound Reinforcement Systems Engineering. Be that as it may, I'm no specialist where the medium of dissipation is water.
and you also agree you need protection from 135 ?? great engineer here you are ....
That’s a great comment!
10:14 as a Slav myself, I can confirm that a fathers sneeze can do more physical damage than a sonar
I confirm, as a Portuguese man myself.
As a french son who have to carry every baguettes my dad produce when he sneeze, I also confirm this affirmation.
so you guys are saying that this phenomenon is intercultural? 🤔🤔🤔
@@IcyBrown indeed my friend
Typical Pierogi Enjoyer
All military sonars have one thing in common. They all have a frequency modulated slide going up. In the sea there are different layers that sound can bounce off so in order to pierce these layers in depth they use what’s called an FM slide. It’s very technical and to long to explain in detail but if you look on a sound graph it’s a up slide on the graph and each unique slide is unique to each navy so when a warship or submarine hears the FM slide you can tell which navy it has come from.
Interesting. I was always wondering about the train of this specific sweep.
@@jurio3117 Yes it’s very interesting.
As a 26CX technician, I have to say that this is a pretty good video. As a side note, I had divers working on my ship one night and a ship on the next pier went active. The divers were extremely unhappy.
That would be terrifying
@@bananabreadloaf dont know how strong the specific sonar signal was, the distance between each pier, nor how long the divers were in the water.
@@bananabreadloaf I can say that the divers were about 600 feet from the ship that was pinging.
Stop larping brother
@@noktu It's funny reading comments like this and to imagine how boring their lives must be. Brother, a huge majority of people do live more interesting lives than you, just accept it.
I remember being on a sub and being actively pinged by a destroyer. It was physically painful, even at a distance, even with the transition from hull to the air inside the boat.
That's wild as hell.
@@i-love-comountains3850 There was a very shallow layer below us at the time, so we stayed shallow above it, and the active pulses just bounced around between the surface and this layer, jumbling up any returns the destroyer was getting and making us very difficult to find.
Was this during active combat? That sounds stress inducing
So.. the sonar can basically also be a weapon ?
@@DreamskyDance Yes he mentions in the video that sonar was weaponized to discourage enemy divers.
I didn't realise active sonar was so powerful, I just assumed that incredibly sensitive instruments were used to pick up the reflections of a rather mundane ping.
For reference a space shuttle launch was around 170dB. That means active sonar (at 240dB) is 10 million times louder than that!
It's worth nothing that you can't compare SPL between water and air because of differences in the reference levels (sound in water is dB re 1uPa and sound in air is dB re 20uPa) and the density/sound speed of the medium. If you're just comparing perceived intensities the difference works out to about 61.5dB. So that active sonar at 240dB (in water) is really only as "loud" as a ~180dB sound in air. (Don't get me wrong, it's still loud! But it isn't going to turn you into paste or anything...)
Wait so how much louder was the kratokoa eruption
No. You cannot compare dB in air with dB under water just like that.
A noice of 190dB under water is roughly equivalent to 128dB in air.
It has go be that loud to do its job.
@@partyofgaming1 depends on how far away you're to the angy boi. If you're close to it, you probably hear it like a very loud thunder struck something close to your house. Source: I live near a volcano, I know how they sound.
But, since toa is in the middle of Sunda strait, and the largest explosion is happened before microphone was a thing. I would expect it'll be around 170-190 db on its mountain level.
It makes me sad knowing that a lot of sea life has to deal with this torture and not knowing when their brain will be turned to pudding 😢
I know :/ I never even really thought about how sonar could absolutely ruin aquatic life
We just don't deserve this world.
@@brikinahonix Why don’t we deserve this planet?
@@xXtuscanator22Xx we destroy it
@@christopherfowler1010 then?
50 decibels are 10 times more powerful than 40 decibels ..... I really didn't know that ... Great video 👌
Yeah, it’s a logarithmic scale, like earthquake magnitude. That’s what makes loud sounds so dangerous, we perceive loudness increases as linear (going from 80-90 decibels feels the same as 70-80) but they’re really exponential.
@@fatcerberus the scaling of magnitude is pretty similar to VEI, each number is pretty much more than 10x stronger than the inferior one
@@sweethomealabama4381 I’ve no idea what VEI is, but cool. We can also compare it with the ph scale which is also logarithmic and indicates a 10X decrease in H+ for every unit decrease
I'm still sceptical 1 dB being "twice as loud". It might have more volume over the frequency spectrum, but it can't be purely the pressure of soundwaves. As Mr. Slav said: A Sonar is 10'000'000'000x (BILLION) as loud as an jet engine!!! that would literally just tear any human made material apart....
There is something about waves (of different kind) that scales are made logarithmically to messure them. Richter scale is logarthmic too, in example.
it's scary to think about how baadly this would affect the underwater marine life..
thats why they don't use it all the time. Obviously.
@@dusky6280 Oh OBVIOUSLY is it?
@@bythegraceofadoni Yes? Read a book?
@dusky6280 Oh, so, you're suggesting things can only be obvious if researched. So even though it's obvious the sky is blue, I should read about it to find that out
@@bythegraceofadoni Yes? What- you don't value being educated? Are you incapable of logic?
Are you 12?
I really like the way you emphasize the seriousness of these situations. "Let me say that again" So we understand just how serious it is. Wild stuff
My dad sleeping : " As if they can handle even a FRACTION of my power "
* proceed to melt reality by snoring *
Hell at least sonar gives you at least some time to escape (or so I think)
But a dad snore doesn't
That's what makes it deadlier
@@thisisrex1676 Dad snoring underwater.
Gave the 69th like, noice
@@SonofGuilliman281 explodes your ears, eyes, brain, lungs
@@MX51997 No, they can create a blackhole.
Damn, just listening to the SQS-26 made me wince in pain. Even through a monitor it's painful to listen to, I can only imagine how painful and terrifying it'd be in the water.
... and the sneezing father!
Hyperacussis speaking here, definitely will be painful just a split second of this noise would definitely pacify me
unless you have a medical condition or volume max, how. it isnt that "painful" to listen to through the monitor
@whynotbedumb my ears are sensitive to high pitches. Some rappers, with the way they pronounce the letter "S", hurt my ears
And it sounds haunting af, imagine going for a quick dive somewhere and hearing this while doing so; I would get the F outta there and stay out of the water for at least 24 hours
One point of correction:
Modern submarines hardly ever use their active sonar. Surface warships use it frequently, but submarines basically only use it to navigate through super complex environments without crashing into things.
Above all else, submarines must hide. Transmitting a sound at 200dB+ lets
everybody know where they are
Would it not depend on the type of submarine? Military's submarines are certainly all about stealth, but there are also civilian/research subs which sonar would be relevant to
@@suibora civilian vessels have some sonar systems onboard but not anywhere close to military systems. They usually use echo location equipment to avoid contact with other vessels or the sea floor. Which wouldn't require them needing 235 dB of sound to do so. Their not trying to find enemy submarines miles away like we are :)
@@Fanslerfarmstead I didn't know that.Thanks for the information 👍
"Still not as loud as a sneezing father"
And then proceeds to disappear. 😢
Honestly, this makes sonar so much more genius than we thought. It keeps submarines safe from infiltration via divers like you see in games and movies.
Imagine trying to swim up to a submarine and you get vibrated into a red cloud
The ocean is like 90% dead, genius indeed.
@@0xsergy don't we already do the same with everything on land and air?
@@allaware1971 does that make it better?
@@itsjayh did I say that?
2:01 The loudest thing I heard is my dog barking. I measured the sound with iWatch. (116 decibels)
I love how dramatic and entertaining Mr Slav videos are but still educational for us to learn something new!
The loudest sound I had ever experienced was at a Death Grips concert and they played the song Turned Off. When the loud fuzz that's in that song kicked in it literally blew past my earplugs and it was deafeningly loud. Been to many concerts but that was by far the loudest noise I'd ever experienced.
That's wild
McRide himself is sonar
For me it was when I saw Sunn O))) live. They were playing a show in a medium size indoors venue in Copenhagen and it was awe inducing to say the least. For those that do not know they get their name from the amplifiers they use, the Sunn Model T's, which is a VERY loud amplifier from the 70's. One on its own is enough to make your internal organs rattle, and well Sunn O))) uses about 6-8 of them at the same time through about 12 cabs + about 6 bass amps on stage between the 2 guitarists and the bassist/synth guy. They easily hit 120dB and above, and you typically experience that for about 60-90 minutes.
It's hard to explain how being at one of their shows is like but I have never experienced sound as intensely or viscerally as at that show, that's for sure.
somehow i find random comments about death grips where i least expect it and it's always some sort of final destination, premonition type warning. already bought the tickets though so wish me luck
Death grips. Death grips, death grips.
I’m a NC native and back in ‘05 there was an incident where dead and dying whales and dolphins were washing up on the shores of the Outer Banks. Researchers came to the conclusion that the most probable cause of the issue was active sonar from Navy testing. I wish there was something in place to better protect our beautiful and endangered whales and dolphins.
or held those idiots accountable
i remember this - happens again several times since -'lets just blame it on ocean wind turbines lol"
@@SuperNova496 Probably happens all the time, it's a byproduct of using sonar, killing marine life.
This is so disturbing!
If you have bones Vibrations of that frequency are going to be hell. Science class Time!!! What Element inside of you is most subseptible to being Rattled apart from Vibrations? Hint, the one that is responsible for fusion.
I was a Sonar Tech in the Navy. First of all, the “transducers” you’re referring to are a stacked array or piezoelectric crystals (ceramic). You push a massive current into them to make them “tweak”, then you release the current and the ensuing sound is the “ping” you hear.
Also, the Navy never bounces sonar off the bottom, unless they are depth sounding. Sound is lazy by nature. It always wants to go slower. Sound travels 3 1/2 times faster underwater than it does through the air. And there are three things that affect sound underwater. Temperature, salinity, and pressure. These three things always increase the speed of sound underwater. So when a ship actively transmits, the sound travels in a downward direction in search of a submarine. As the sound waves go deeper through the water, the pressure begins to build, and the sound starts to speed up. But sound is lazy, and it wants to go slower, so it curves upward towards the surface again. As the sound gets closer to the surface, the temperature of the water starts to go up, and the sound starts to speed up again. And since sound is lazy, and it wants to go slower, the sound curves back downward. And this cycle repeats, depending on the conditions. These would be ideal conditions to actively track an enemy submarine. It is called a ”sound channel axis”. And I’ve never heard anyone picking up submarines, or any other object with an active transmission from hundreds of miles away.
However, with the passive systems like the TACTAS (tactical towed array system) you can passively detect shipping traffic (prop rate, blade rate, and auxiliary components) from over 100 miles away in the right conditions.
I think he ment you could pick up a enemy sub from far away with directed sonar in the most ideal circumstances? Do you think that's possible?
Ultrasound's use the same piezoelectric crystals to do the same thing in a body. You dont want to go higher than about 130mW or you can make bubbles in their blood. We made some arrays that could sense the direction of your bloodflow and the computer would visualize it. Cool and also kind of freaky.
I've been to rock concerts and monster truck rallies but no sound has ever been louder than huge claps of thunder directly over my house. That shit makes the world feel like it's exploding.
But the most painful sound I have ever experienced was the shrill burst of tinnitus in my ears after jumping into water off a bridge. Kept going for several hours with an excruciating pain that wouldn't go away. Turns out I gave myself barometric trauma in the ears and came close to blowing out my eardrums... all from jumping into water from a height that everyone else I was with that day was fine jumping from. I can only imagine sonar would feel SO much worse.
Ever seen Motorhead live?
I think i have a cure for what you are suffering from 👍🏻👍🏻 and it has been used in my culture for ages .. i hope you recovered but in case you did not , then i might be helpful.
@@Sorter_123 i have very bad Tinnitus :(
If you tap the back of your head by crossing your index fingers over your middle fingers and then flicking your index finger back into position (making it slide off of the middle finger and hit beside the soft area at the back of your head) the tinnitus will go away
@@BalroomBlitz715 i heard from this several years ago. Thanks ❤️
As a former Sonar Technician I applaud your accuracy in this video. Fantastic!
Story time - the ability to steer and focus the active beam allowed for some sassy sonar techs (me 🤪) to figure out how to aim the active beam backward directly down the centerline of the ship, turning the whole ship into a resonance chamber.
I'll let your imagination tell the rest of that story. (No one was ever hurt lol, but very annoyed)
What i think is the best prank
Can the signal be heard outside the water theoretically or is the impedance mismatch too much and all energy is reflected back into the water?
Dude literally compares decibels in air with decibels in water, the most basic mistake that leads to misunderstandings like the one this video is based on, and you call it "accurate" lol. I guess this isn't important info for a sonar tech.
Change the frequency and you can resonate that puppy till the bolts come loose
@@link99912 he literally tells you the discrepancies in the video lmao.
This genuinely scares me. I hate the concept of really big machine things that could just.. kill you by having it pointed at you or being right next to something when someone turns it on.
I could have someone tell me this sonar system is completely broken, disconnected from power, turned off and is literally impossible for it work. Yet I would still probably panic if they tried to get me to stand right next to it.
Inaccurate, heard the sound in the beginning and I’m not dead
NOTE: the decibel reference value is different by 61.5 dB for sounds in water vs air. So the sound intensity of 100 dB in air is actually equivalent to 161.5 dB underwater and vise versa. This causes confusion about "melting your brain" because the underwater numbers appear incredibly more powerful than the values we're more familiar with on land.
That makes sense
That makes sense. I know that 235dB sound in air is impossible, and assumed the same for water, so I thought this RUclipsr was just exaggerating when he said that number.
Is that the reason why he said 10 dB is x 10 times stronger (incorrect in pure mathematics, every 6db is ~x2 times) ?
@@alexandernachev3471 20 * log10(2) = 6.02.... so there are amplitude dB and power dB, which differ by a factor of 2 (since power is amplitude squared). I can never keep it straight, and will occasionly say "that's a 1 Bell increase" and ppl go "what is one bell", and I'll say "uh, duh? 10 deci-Bell, 100 centi-Bell, and so on". Just to troll the metric system.
so I had to look that up. Not only do they use a different definition of 0 dB (1 uPa vs 20 uPa), to convert from mean pressure to mean power, you have to multiply by the acoustic impedance, which appears to be related to the density (800x) times the speed of sound (4.3x) ==> 3500 = 36 dB, so you then add the square of the reference 20 * log10(20) = 26, for a total of 61.5 . Totally not confusing.
Now the real horror is when you hear that sound. But you are just doing whatever you are normally doing, with no way of knowing what is causing it as you try to avoid your brain melting.
It’s like falling to your death. The horror of inevitability. Cosmic horror.
Edit: whoops. Cosmic horror doesn’t count sorry
Edit: Cosmic horror might count. I am very confused about the situation I am in right now.
I don't think you hear much, but you start feeling a vibration, a wild one, like an hydraulic shock/water hammer repeteadly.
you would explode.
good thing im not a diver
Tell me you have no idea what cosmic horror is without telling me you have no idea what cosmic horror is
@Alpha do tell what is a cosmic horror
It does actually make me a little sad to think just how much damage has been done to ocean wildlife by sonar. The ocean is very, *very* large, but given how far sonar travels, we may have killed entire ocean ecosystems with our ships without even knowing it.
At the swimming pool my friend and me would go to opposite ends of the pool and under water to the floor and shout stuff at each other and hear it, when it was really loud and busy and even though it was muffled and we thought that talking under water was gibberish.
Then I would tap my finger nail very lightly against the floor tiles and he'd repeat the tapping pattern back to me, even with the slightest tap he could clear ly hear it. Above water at the surface we wouldn't hear each other if we shouted cos it was busy n load and indeed he wasn't near-by either.
Womp womp
grow up kid, did your dad left you ☹️@@TwistedFireX
They know it
@@unkomfortablehe has a Patrick Bateman picture, ignore the miserable fool.
This sound melts brains
Me clicking on video hoping to hear the sound and melt my brain.
I have severe Tinnitus(since I was 5). I hear that sound 24/7/365. I coped using opiates, benzos, and can not sleep unless there is background noise. I have had life altering depression and I cry randomly for all my life. I still think I am strong for lasting this long(I am 42). I enjoy your videos thanks and apologies, I just rarely hear anything comparable to the frequencies from my ears(damaged, I think, by getting tubes in my oft infected ears as a child).
Warrior.
@@jackvalentine7403 :)
You’re one of the strongest humans on the planet. Keep your chin up and show everyone your beautiful smile
You are very strong! I deal with depression by distracting myself with learning about the universe.. If you need a hobby get into cosmology, it's an amazing universe out there
Fuck man.. I couldn´t imagine how that feels even if I wanted to. Keep fighting brother! You are strong and I believe in you.
Two things: First, this technology, albeit damaging, is absolutely an insane feat of engineering. Second, I find it so interesting how vibrations are everything in the universe. They’re the key to the secrets.
The Beach-boys understood it.
Bro wtf kinda thought process is this I don't trust u
@@pupplementarypupplements5804 My goals are beyond your understanding.
@@xXtuscanator22Xx goal #1: rule the entire galaxy
Mmm I still think giggeliwangs are the real secrets of the observable universe.
Jet engines sound is amazing. The fact you can hear an airliner passing overhead is insane. The plane is around 30,000 ft in the air and you can hear it clearly.
The planes you hear are few minutes max after taking of or before landing. There is no way you would hear anything at 10km altitude lol
@@baronnuuke7821 if you are away from cities or anywhere there is surrounding noise, you can very faintly here a cruising airliner.
@@baronnuuke7821 bruh i hear them all the time
@@lordfarquaad1195 We call this dementia
@@baronnuuke7821 No. I live out in the country. The closest airport is over 50 miles away. While they may not be at 30,000 ft they aren’t on approach or recently taken off. It’s definitely not loud and if you weren’t paying attention you could easily tone in out.
Woah when i heard the sonar sound my brain felt weird on the sides and i felt tired???
The sound the Sonar makes is terrifying imagine diving at low depth’s all on your own in the darkness when you start hearing that! Great video you really explained well what a Sonar is and how it works. 👍👍
Yea how is this not more of a problem? Commercial divers diving deep can't surface. They have to go through days of depressurization and would just die down there if sonar was used. And there's no way these ships know who's in the water in a 100 mile radius at any given moment.
I was surprised how horrible it was. I can imagine some whales hearing that and choosing death on the beach rather than meeting what ever makes that noise.
Noise pollution. Marines mammals are constantly tortured by these devices.
@@rawnukles yeah this is huge problem
E
Strangest sound I ever heard underwater, while I was diving, working on a pipeline, whales, literally made my chest vibrate, so fascinating!
There's a video out there where a guy is having a sort of Ted talk to a small seeming dining area. He was a marine driver/biologist kind of expert and his talk was about whales. He said that when you are interacting with them, their sonar starts to warm you up. You don't want to be in front of them, either. Something about lethality lol
@@VulcanXIVsperm whales can temporarily paralyze you so if you are free diving with them you can drown.
Just like sonar they emit sounds and some of them can kill you just by being near them
This is very enlightening, I had literally zero idea how sonar worked. And now I feel like I'm completely caught up with another technology. Very comprehensive information as always. Thanks you brother
I was diving near a naval destroyer when they went from passive to active and that was the most intense thing ive ever experienced. I could feel it in my brain. The Navy screwed up, they were supposed to be denied the ability to use active sonar without pulling the divers from the area. We were working late and shift change didn't mention the divers.
I'm shocked you're still alive to tell the tale! 😳
Holy sh**t bro, loud enough to make porridge with your brain, so intense that the water boils by itself, even the biggest living being is so scared that rathers to die, his power is over 3000! You can almost hear it from the coast of another country and not even full power and you are telling that a little shiet, not the strongest, not the greatest, the fastest, supposedly the most intelligent by far but not always noticeable... survived to tell it?
*Well shiet man, awesome*
9:43 just hearing this would kill me from fear alone. this is a horrifying sound
don't you think they would've come up with something better by now that doesn't kill everything around it?… Oh wait this is the military we're talking about…🤨
@@looseele You can't reinvent how sound or physics work my dude.
@@HystericalHuntress you cant, but you can use lasers to do the same as sonars, its more expensive but its possible, the problem is no one wants to use more money to do the same thing and "save some animals etc"
@@HystericalHuntress But you can outlaw murder, the army is basicaly killing all life around them including humans. Guess laws don't apply when it comes to government and army
@Snapshot it is, there are already laser radars, Police use them and they dont burn anything, Im not talking about normal light lazers, Im talking infrared ou ultra violet, kiddo, the only thing That can happen is make someone blind if it in the eyes, in water the lasers Will take very long to burn someone and when leaving the water they all Change Direction so it loses all power, I think its worse killing a person than blinding it, but its justy opinion, airplanes use laser radar to calculate altitude, a lot of Cars use laser radar to emergency brake for you, you just need a more powerfull One and more of them, or One with more laser surface area, it is possible, kiddo
Sadly not everyone follows the laws. A Chinese warship recently used their sonar while there were Australian divers nearby. Scary stuff
Wow! This happened to me today when i was freediving here in sharm el sheikh in Egypt. I heard the last sound he played repeated about every 30 seconds. Needed to be underwater to hear it. Thought it was a whale or something first as i havent heard anything like this before but it kept on pinging and it was awesome to look out into the blue and imagine out there a submarine was there
Forgot to mention that submarines rarely do an active ping, it was most likely a military ship.
@@MRSLAV maybe. But i could se for miles all around and there was no ships..
@@RimjobHimself most likely a ship over the horizon, submarines usually don’t active ping because it gives away their position due to the sheer amount of noise active sonar generates. any submarine or ship that was even remotely nearby would have their passive sonar light up instantly, and considering submarines are usually designed with stealth in mind, most active sonar comes from ships that are looking for something and don’t need to worry about being sneaky about it.
@@RimjobHimself He did say there was an instance of guy hearing a ping from 160 km ,so it's safe to say it was pretty far away ,any closer and you might have ended in the hospital if not worse
@@Assassin5671000 yeah very cool. I didnt know it could be so far away. It was awesome anyway to experience it.
The actual sound he played at the end is bone-chilling itself, even if it wasn't powerful enough to tear you apart. What we as species cause the other inhabitants of Earth is truly appalling...
If you think this is bad look into VX chemical warfare
It makes me sad to think our oceans are hostile to their inhabitants:(
The real sonar sounds remind me of earlier industrial music, when it was still very Avant-garde.
6:12
bro the sound at the start made me jump out of my chair i wonder what will happen once i hear the end
Live sound engineer here. All hearing damage is permanent as minuscule as it is at lower pressure levels. Yes at 135db you need to wear protection for any amount of time. But also above 85db you should wear protection if you're going to be exposed for longer than 15min. Most live shows start at 90db and can be as loud as 115db. So you should always wear ear protection at concerts if you still want to be able to hear someone speak to you when you're 50.
What? Huh?
Sorry, I am 40, not 60. I was born deaf. Had my hearing for the first time when I was 4, but it was a work in progress. Had 6 surgeries on the ear drums and canals. By 8th grade, it was deemed successful. I have trouble hearing lows, but I can obviously feel them. I have trouble with extreme highs and quiet voices.
Exactly people almost never mention it, but it's decibels x time, not just decibels.
That's why you can shot one shot with ak without ear pro and be fine, but try burst and tinnitus guaranteed
Funny they never account for the ear wax in the ear that blocks and absorbs a lot of the sound waves
Dramatic, you're just going to get saddled with tinnitus. Losing hearing in old age is 99% genes
I'll add that the OSHA limits were designed for workers experiencing daily exposure 5 days a week for 40 years. As Roni92pl pointed out exposure causing hearing damage is cumulative like sunlight is to the skin so the average person attending a live sound show once or twice a year isn't doing all that much damage to themselves as long as volume levels are within reason. Always bring earplugs for concerts just in case but let your ears let you know if you need them, if you are in any pain, you are doing instant damage to your ears and use your plugs, if it's not uncomfortably loud, 1 or 2 concerts a year isn't going to be all that damaging. I'll add also that the OSHA guidelines are also measured in dBA (A scale, meaning 200hz and up). There is no data on hearing loss afaik for frequencies below that. 105 dBA is about all my ears can handle before they start to hurt (>200hz) but the fun doesn't start at 50 hz (bass) until you hit 130 dB's which my ears have no problems handling.
Imagine just swimming at the bottom of the ocean, pitch black. Then you hear a sonar.
i genuinely thought that sonars can only produce frequencies that can only be affecting objects and not also human beings. man i'm astonished
There is no such thing as sound "only affecting objects and not humans". Sound is a vibration, even if you can't hear a sound becuse it's too high or too low frequency, it's still affecting you.
I love the way you say "Underwater" with your accent. Those rolling R's in that word just sound so incredibly comfy to my ears, thank goodness for such a soothing sound while imagining my whole head being ripped apart by a sonar ping D:
Slavic accent ASMR when?
gay
@@Slokiler123 Yes
Now, imagine him rolling that R at 235 dB...
@@micmacha UndeRwateR
not me never touching the video and clicking it once with 0 volume because it says it will melt my brain-
10:16 *Father wishes to talk to you*
Played Barotrauma with the "Realistic Sonar mod" and that's how I found this video.
Nothing like getting 20 afflictions while your character suffers and their brain/body is shredded from sound.
Was outside sub and friend turned active sonar on to check surroundings and the "RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRREEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE"
as my character exploded was fun ☠
"This sound melts your brain"
*PROCEEDS TO PLAY SOUND*
“Still not as loud as a sneezing father” bro caught me off guard in the last 3 seconds. This video earned you a sub 🤙🏼🤙🏼
😂😂😂😂
I had no clue how powerful sonar sounds could actually be. This is incredible and very fascinating. Thank you for the information.
I had no idea it could be that dangerous I just had never really known anything about sonar other than what it does. Awesome video.
These videos are really interesting Mr Slav! Keep it up
These videos where you narrate are great, your accent makes it kinda unique and the topics are always top notch, great work!!
I’m I the only one who finds the intro funny 😂😂😂 “ scary underwater sounds” combined with his accent and the sarcasm is so funny to me😂😂😂❤
whale covering its ears: “I thought I was fucking loud, damn”
(edit: holy shit I guessed right… fucks sake, humans)
Wow, I had no idea about many of the things about sonar technology. Thanks for the video fellow Slav!
That sonar sample at the end was already scary enough without the knowledge that it would kill me.
RUclips: This sound can kill you
4,300,000 people: okay lets hear it
"Still not as loud as a sneezing father" BROS SPEAKING FACTS🗣🗣🗣
Barotrauma has a Real Sonar mod that models damage done to creatures (players included) from active pings. The distance falloff is significantly shorter and the damage is not quite as insane, but it's still alarming to get ping'd. They use the sonar sounds from the SQS-26 too.
You’re just minding your business, doing mudraptor things then *SCREEEEECH*
The most annoying sound you heard ever appears.
Yeah, I’d be pretty pissed off at whoever did that to me too.
The loudest sound i ever heard was a huge thunderstorm that fell 20 meters away from me while camping. The tent had iron bars, but luckily, there was a nearby old tower with a huge metal bar to atract any thunderstorm.
Once I was at an air show and a fighter flew by us real fast, no higher than 200 feet when I wasn’t wearing ear protection. Worst mistake of my life
Lightning struck a tree about 15-20 feet away from me one time. I was in a car. It was loud.
when i was a kid, i had a cap gun shot DIRECTLY into my ear (fuck you, brandon).
it rang for about a month after that..
When I was younger a lightning struck during the night. I am unsure whether it struck our house or the lawn outside but it was the loudest thing I ever experienced. The whole house shook. Next morning the Internet had been completely fried.
"THIS SOUND CAN ACTUALLY DESTROY ANY LIVING CREATURE WITH THE SOUND"
Me wearing a headset while watching this video :
you wearing a headset: *literally dies*
maybe try the sao nerve gear next
"Still not loud as a father sneezing" *proceeds to dissapear*
It's terrifying to think you could be killed by sonar hundreds of miles away from the ship thats making it
I was on a guided missile destroyer (DDG) while serving in the Navy. our sonar system used to put me to sleep. I would hear it while in the berthing spaces. Whales would also be attracted to the sonar and moving ship. they would travel side by side with the ship. I never thought for a second that the sonar was harming them. in fact I thought they liked it.
some whales comunicate with sonars, so they were probably just confused (as in: "wow, what a wierd metal whale. Where you going buddy? Why are you all alone??")
Did you ever get to destroy missiles?
@scrub3359 "they kept attacking my cousins. What'd you expect me to do!!!" (ref. Napoleon Dynamite)
If I had to guess, it was at a lower frequency or power setting if it was constantly going, or a different equipment was used.
@@kasialoot296where's your pod mates bro? Do you like anchovies on your pizza?
As a ship sonar myself, it is true that i melt divers brain.
I served on the Kitty Hawk in the late 1980's. While transiting the Indian Ocean we could hear the sound of active sonar in our bething area, and the engine rooms - in breif bursts, since those spaces were technically under water. Strange sounding indeed.
I love the part when the sound said "its sounding time" and sounded all over the place
r/sounding
@@abbcc5996 *no*
Yep. Mr Slav mentions it's morbing time and morb away
Sounding?
this is why real sonar on barotrauma is a thing.
I believe Mr Slav is a very bad ass person. Love your content as always. You deserve 50 millions subs
“Fuck you” *deafs you with bass*
Wow, I had no idea sonar was that powerful and destructive!! Very interesting video!!
I love the narrations Mr. Slav, they're much more entertaining this way!
I like how we see some bread being ripped on 10:03
😂😂😂
lol
0:18 my brain already has melted
Erm actually, that’s not possible 🤓🤓🤓
ALTUALLY @@coolkidwise2496
Those sounds are pure nightmare fuel
I have trouble sleeping and I found myself very calmed down and almost ready to fall at the end of you video. Your voice is very cool to listen to and the topic was fascinating
Absolutely amazing how accurate your videos are, great stuff
Had an f-15 goin more than 100dc, permanent eardamage. It was flying above me at 30ft at full afterburner and pulling up at me so i melted and go deaf at the same time.
9:55 “So we could only imagine what it could do to animals”
proceeds to show a clip of someone ripping bread with a red filter
Always supporting you, Mr Slav❤
I wonder how many rare sea creatures have been vibrated to death by submarines
Me too
Not only subs but naval ships as well. Well, not fishing ships.
Even if some fishing ships have sonars, they are pretty weak compared to military warships because of their size which can fit a colossal sound canon, and another thing is that fishing ships do not need such a giant sonar, since they want to see what's underwater, but not kill the creatures.
Still, a lot of rare sea creatures are rare because of these sound canons and one day, they'll be all extincted. I'm sure with the tech we have now we could use different ways to detect stuff underwater, like using LIDAR for example, although this would mean blasting very high powered beams of light just so it can reach the bottom of the ocean, but the radius would be significantly lesser than blasting an sound canon that can be heard from the US to the other side of the atlantic ocean.
Pretty much none since most pings are from the surface ships trying to find submarines
“Still not as loud as a sneezing father” **fucking vanishes** **refuses to elaborate**
Keep up the great videos! I was skeptical about this channel's change of direction but it's going well!
In call of duty ghosts there's a diving mission where you use termite to cut through a old ships hull before attempting to plant a charge on a modern destroyer. It uses active sonar and the entire time you are trying to seek cover to avoid getting killed by a ping. This isn't by any means realistic but it is the first time I've learned active sonar is actually lethal
6:55 sonars just took the term *shake your body body* to a whole new meaning
Imagine how loud and disruptive this would be for sea animals that use radar to communicate to each other.