There's a Lever in Your Ear and It Does Something Amazing
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- Опубликовано: 7 июн 2024
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Impedance mismatch is when there's a difference in acoustic impedance between two mediums. When this happens sound is reflected at the boundary. There's a mismatch between air and the water in your inner ear. If it wasn't for a clever lever mechanism in your ear, most of the sound would be reflected back out at the boundary and our sense of hearing would be terrible! Two of the three bones in your middle ear act as a lever giving mechanical advantage to your eardrum.
The Ultrasound gel video is here: • Ultrasound gel does am...
Credits:
1) 3D ear animation - National Institute on Deafness and Other Communication Disorders, part of the National Institutes of Health en.wikipedia.org/wiki/File:Jo...
2) 2D ear diagram - Lars Chittka; Axel Brockmann commons.wikimedia.org/wiki/Fi...
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"Mediums" is a valid plural of "medium". Change my mind.
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My friends and I went to the cinema and we decided we didn’t mind sharing popcorn. Everyone getting their own small popcorns would be much more expensive, so we ended up sharing two mediums.
descriptivism rules!!!
Aether is a gasseous like medium and there is no plural of it :p
No really, could you please debunk Nikola Tesla? Even in this video there are corelations with sound and electricity and he clearly stated that EM waves are NOT transversal but longitudinal propagation through aether akin to sound in air.
He first explained that its a rarefied gas but after michelson morely experiment came to the conclusion that its a fundamental gasseous like medium prevading everything. He even explained it's propreties and how and why it propagates at speed of light.
He also said that relativity is destined to oblivion as it's all wrong.
Please. There is no informations to be found anywhere only wrong teachings not taking into acount the longitudinal aspect.
You should've given tips on how to insulate against noisy neighbours 😊
Great video. Now I understood
All the years of my life and I finally learn why I can make my ears rumble on command.
That's exactly what I'm thinking right now.
me too, when I was a kid I assumed they were my 'ear drums'
have you guys put your ear up to someone else's and made the sound?
my friends can hear when I do it, I thought it'd be cool to know Morse code and communicate with someone else 2ho can make the sound too =)
Yes! I always used the clicking to help relieve sinus pressure in airplanes and wondered why no one knew what I was talking about
@@dreamingthelife i never thought of playing with it with someone else, You're my hero !
I can hear the crunching sounds without needing to do that face, so I can contract my Tensor Tympani Muscle, I always wondered what that was, thanks.
Same here!
Yup, can do it as well. Taught myself after realizing the rumbling after yawning. Thought it was normal till a few months ago.
I can do it also, i've heard us referred to as "Ear rumblers"
I've wondered as well, didn't realize it was meant to be a reflex. Hard to hold it for long periods of time though. I hope "crunching" isn't an entirely accurate depiction of what you hear though, that doesn't sound all that great
Sometimes my left one thumps on its own for a few seconds, but it sounds and feels very different from the yawn rumble. Actually not entirely sure it's this exact muscle twitching, but it is a twitch, which is quite different from a more constant contraction.
It's going to be weird watching older youtube videos in a few years from around now and everyone just casually mentioning they're in quarantine.
@@pskugd8385 the universe was not found by chance, science never said that. you don't know what chance means in science. chance is about choice, you have a probability of that thing happening, science actually says everything in possibility (of the universal constants that govern the laws of the universe) is possible, but just improbable, but clearly not everything is possibly happening at once, even if it is (yeah, I subscribe to multiverse interpretation, not the copenhagen) we don't experience it this way, so something is choosing to see our current reality.
Perhaps there's a God that makes the wave-function collapse, perhaps it is my own consciousness that make it happen, perhaps both. I too was an atheist and it was the religion that made me atheist, but it was my mathematics study that make me go back believing in something. I don't know if god created the universe or not, and I can't know if god doesn't exist or not, but clearly the universe is way bigger than we can grasp and there must be something higher.
Even if god created the universe, as a scientist we have to exclude it from the equations because we're part of the universe and we can't see it from the outside, we can only see through what we change in the universe, by an action and through an reaction. Remember science is just a tool for creating knowledge, you can't create knowledge of something you didn't interact, and you can't interact with god directly (the same way an ant can't interact with us, and we are gods to them, they can't fathom our intelligence).
But I have a suspect that the universe is way bigger and the god is just the observer, that's why we experience this specific universe. (that creates infinite induction of gods, I have no problem with infinite induction, infinities are only a problem inside universes, not outside them, mathematics again, yes, I'm a platonist mathematician too, mathematical constructs are not imaginary things, they really exist)
Luiz Felipe
Mr. Felipe, thank you for making your point. But in the end, you found a god. he exists. You say you should exclude him from the equation. So what is the use of searching ?! . This is one point. The other point. Thank you for explaining to me the meaning of chance. But with the various atheists, I noticed that they reach a point or result and then say an explosion, waves, etc. But does it make sense to make itself by itself and then make this wonderful, spacious universe!?. Again, come back and say, if I told you that there was a house built without someone interfering, you would accuse me in my mind. It is a trivial thing that could be if we recognized the waves, the explosion, etc. Who created this universe,
in the last . Life is short and every day who goes away forever. We are here to perform a certain task of worshiping God. Not to solve mathematical equations and spin in a vortex. We take from the material sciences what is based on the evidence that we benefit from in our lives and take it as a bridge to cross the hereafter. no problem . God addresses His servants who created them and deny His grace, and he says in his holy book:
(Or were they created by nothing, or were they the creators [of themselves]?)and(Or did they create the heavens and the earth? Rather, they are not certain.)Surat al-Tur Verse 35; 36 The Noble Qur’an.
And (And I did not create the jinn and mankind except to worship Me.)and(I do not want from them any provision, nor do I want them to feed Me.)Surat al-Dhariyat verse 56;57 the Noble Qur’an.
@@pskugd8385 Hello there, "So what is the use of searching ?" its just a science thing of dealing with what you know and accepting the unknown, God doesn't go in the equation because he's a constant external variable that you can't change or control to do experimentation. Remember that science is about experimentation, not just observation. But I also think of not spoiling the ending of the play :) (soul searching is about the subjective internal and not the objective external, all of this can as well be illusion)
"But does it make sense to make itself by itself and then make this wonderful, spacious universe!?" Well, I approach it either way, why doesn't everything exist at once? if nothing exists, then there's no rule saying that anything can't exist, so anything exists. Its a paradoxal logic. There are ways in the mathematics to deal with this, and they are precisely creating discrete closed universes and leaving the unknown in the open, that solves the paradox. So, by induction you assume everything exist because they can, because only the non-existance non-exists, everything else does. Then that creates the multi-verse out of nothing. (1 from 0, something from nothing, we do that on Construtivist mathematics) But that is an act of creation. We can only do that if we have this bounded context (its kind what Zermelo did) in wish we filter some of the existence in this finite group. Then we arrive at this question: how and what does decide that this precise thing exist and the others not? something. This is the God we are looking for, its not concrete evidence, but its some drafts, its deeply embedded, its an axiom of existence. (this can all be an illusion of this computing device called brain, we can't know for sure, you can't be atheist, nor deist with certainty, I just think consciousness is real, the Unverse is fake, that's how its created, at least that's what I think, have to watch it all until the end of the play to know (iow, after I die) )
All of this is just my way of seeing thing.
"We are here to perform a certain task of worshiping God." that's when we disagree, I don't think God needs worshiping, and I still don't have religion. I just believe its possible that there's a God. If there is indeed a God, we can't know reasons of the Universal consciousness, that's for sure.
If all the universe exist through His eyes, then everything is kind of worshiping just by being, my friend, but here we enter on individual beliefs.
I think the last paragraph you said about Qur’an don't disagree with what I'm saying, but I don't know Teology, just Mathematics and Science.
While everyone seems focused on the Tensor Tympani Muscle I’m blown away by the clarity of this video.
I’ve always known the little bones helped transmit sounds but never understood their role and yet again how amazing evolution is!
Thanks again for another fantastic video, I really appreciate how you not only identify the components of your subject but also identify the mechanism associated with that component. Whether it be ears or gravity waves. Wonderful 👌
Yeah the way he explains the minute details with such a clarity is amazing !! But if he had explained the lever mechanism in the ear a bit more with animations that would've been awesome..... I couldn't get how those weird shapes caused lever action 🤔
He is the best explainer ever!
@@nataliafrese1526 yeah totally agreed 👍
Yeah amazing how our ears, our eyes and our incredible brains evolved from a muddy soup somewhere in outer space! That takes more faith to believe in than the fact that we were created by a super intelligent being. I let you figure out WHO that being is!
>evolution
“Steve is going insane because of quarantine”
Nope I’m pretty sure that’s just Steve.
@@pskugd8385 what are you doing here??
I have nothing against religion, but I do think it's total bullshit that humans made up for thing in nature they couldn't explain because they weren't educated enough. It's like a child making stories. @psk ugd what are you doing here??
I have nothing against religion, but I do think it's total bullshit that humans made up for thing in nature they couldn't explain because they weren't educated enough. It's like a child making stories.
ruben van den houdt
My dear brother, then you have not answered what was written above. Fudge When I tell you I found a house built without anyone interfering and believing me. So let us free our minds a little and re-meditate!
(Or were they created by nothing, or were they the creators [of themselves]?)
(Or did they create the heavens and the earth? Rather, they are not certain.)
Surat al-Tur Verse 35; 36. The Holy Quran addresses your mind.
@@pskugd8385 I am fine with the idea of a God. If believing in something higher makes you a better person, but not everyone can have their life improved this way. If a creator exists, it will come to them directly to give them enlightenment if enlightenment was what it thought was best for them and this creator would have many outlets to do this which are more effective than to get someone else to do it for them. To put things more simply, it WILL find a way to them if it wants to and it will use the most efficient way to do so and it will know that using one human to convince another is not the best way because humans tend to not trust one another. The reason why I know a sufficiently powerful enough entity to create this universe would know this is because I somehow figured this out and I am not powerful enough to create the universe. You don't need to go out and tell others because it will, and it will do a much better job at convincing them than a human ever could. I ask that you would criticize this message with all honesty within yourself as I have done the same with yours and have a good day because no good person likes bad days.
Eclipse49
If you believe in God, you must give in to his way of communicating his message to people. He is the one who created and he is the one who chooses the method. I did not bring words from me and did not invite you to a religion that I invented in order to trust me. Rather, I invite you to read the book of God, the Noble Qur’an, reading, honest, fair, without arrogance. You will know that it is the truth, either you believe in God and what it invites you to, or you arrogate from the truth. The relationship with God is based on surrender, and if you surrender to him, guide your heart and guide you for the different purposes of his orders, intentions, and will.
www.quranful.com/
Eclipse49
46 And we used to deny the Day of Judgment.
٤٧ حَتَّىٰ أَتَانَا الْيَقِينُ47 Until the Inevitable came upon us.”
٤٨ فَمَا تَنْفَعُهُمْ شَفَاعَةُ الشَّافِعِينَ48 But the intercession of intercessors will not help them.
٤٩ فَمَا لَهُمْ عَنِ التَّذْكِرَةِ مُعْرِضِينَ49 Why are they turning away from the Reminder?
٥٠ كَأَنَّهُمْ حُمُرٌ مُسْتَنْفِرَةٌ50 As though they were panicked donkeys.
٥١ فَرَّتْ مِنْ قَسْوَرَةٍ51 Fleeing from a lion?
٥٢ بَلْ يُرِيدُ كُلُّ امْرِئٍ مِنْهُمْ أَنْ يُؤْتَىٰ صُحُفًا مُنَشَّرَةً52 Yet every one of them desires to be given scrolls unrolled.
٥٣ كَلَّا ۖ بَلْ لَا يَخَافُونَ الْآخِرَةَ53 No indeed! But they do not fear the Hereafter.
٥٤ كَلَّا إِنَّهُ تَذْكِرَةٌ54 Nevertheless, it is a reminder.
٥٥ فَمَنْ شَاءَ ذَكَرَهُ55 So whoever wills, shall remember it.
8:08 absolutely everyone:
"(>.
This guy has literally the best coloured eyes.
For me brown eyes for boys and green eyes for girls are best
We are talking about ears today guys 😠
It helps that his pupils left the building at 3:46.
Now that his Iris has conquered the pupils, they're planning to expand into sclera territory.
Yeah, blue eyes are truly the best kind of eyes to have.
Jane Elliott didn't get through to some people, I see.
Well I just learned something about myself! I've always been able to "close off" my ears from loud sound using a muscle in/around my jaw at will, but I never knew it was using the tensor tympani muscle. It's one of those things that's hard to describe, but when I do it, everything sounds muffled like I'm underwater and occasionally I will hear that roaring sound you get when yawning. As soon as I looked up the tensor tympani, accounts of people doing this told me it was exactly the thing I've been doing.
Have always been able to do it myself.
I can hear my breathing and heartbeat really loud though
@@Cronuz2 thats because your brain rapidly adjust the sensitivity to sound.
Its like you have covered your microphone with a sock and turned the gain really high. Now its much harder to hear people talking into the the mic but guy who keeps flicking the stand is much clearer.
I wish I could do it at will but I have the opposite problem. Only extremely strong yawns ever reduce or muffle sound.
I can make a rumbling noise in my ears at will, I assume it's this muscle? Not sure it really lowers the volume of external noise though.
Interesting, I am able to let my ears “crack” at will, but i still can hear nearly everything like normal... but I also hear my heartbeat and my breath like I am yawning 😕
In the ear there is an Eustachian tube, where some people can open at will (and let the ears crack, for example if you are flying in an airplane and feel a pressure in the ears).
Maybe I can open this, but not use this special muscle? Do anyone have more information?
@@schuppe9006 I kind of tense up my upper jaw but I focus on the inside of my ear to "pop" my ears and on planes and when swimming sometimes.
I’ve always been able to voluntarily cause a low rumble in my ears without yawning or scrunching up my face. I guess I must have some level of voluntary control over my Tensor Tympani muscles
Spaceman Spiff same for me and I always wondered what it was
Huh. That’s what that is. It makes me feel weird if I do it too much so I tend to not do it.
Spaceman Spiff me too
I have this too. A part of the population has voluntary control of the tensor tympani muscle.
You can actually hear the same sound by clenching your fist and holding it firmly against your ear.
Muscles are surprisingly noisy
Me too man! I always thought i was the only one who knows about it. As a kid i pretended that thats how i would activate my superpowers so i dont use them by accident. This was the first time ive heard anyone talk about it. Unfortunatily now you lot that can also control it might have superpowers too and that could be a problem for my world domination plans
wow finally a VPN sponsorship that doesn't tell you it "protects you from hackers" with "military grade encryption". that was a really good summary of the actual advantages of using a VPN.
Yeah it shows that he actually knows what he is talking about and isn't just saying boilerplate phrases that sponsors told him to say.
Someone has seen Tom Scott's video XD
It's a matter of who you trust more, your ISP, or your VPN service. A VPN might hide your traffic from your ISP, but whatever they're hiding from your ISP, they will see themselves.
Nord VPN? After what they have done? Holy shit.
@@leocurious9919 What did they do?
Imagine going to the gym, and doing 100 reps of anticipating a loud noise.
_"Do you even tympani, bro?"_
🟦🟪🟩O people. If I told you that a building has been built by itself, trees have been planted around it, beautiful furniture has been furnished, and electricity and water have been provided to it by accident without anyone interfering. You would have accused me in my mind. What do you think of someone who claims that this universe was found by chance and that he takes care of himself? This is the eye of madness. Rather, he is a great, creative, Almighty God who created this universe and as he began it will end it and we will be gathered to him on the Day of Resurrection and be held accountable for all our deeds so believe in God and His messengers.
If you want more information about your life why you are here what you will face in the future who is god
www.islamreligion.com/
Keep Ask questions in chat and Free your mind
A message from an ex atheist
I am Muslim now thank god
@@pskugd8385 good on you for finding your happiness. Dont spread your "truth" in unrelated places, this isn't the 1500s we arent interested.
@@pskugd8385 I'm a current atheist and will be forever. "God" doesn't exist. However if heaven and hell does, I'd rather go to hell.
@@pskugd8385, Haha, it's almost like you don't even understand it. Only a liar or an idiot could say something that dumb - and i'd prefer to think you're not an idiot.
@@pskugd8385 Seems like your story turned a deaf ear.
I think, creation and evolution are not mutually exclusive.
If you find a pocket watch on the beach you know it's been engineered.
The shells you find around it are, 'obviously' a product of evolution.
But, when you look at all this, you might wonder:
Is evolution engineered ?
Any answer to that question is merely an opninion.
DAmn!!! I finally got answer to something that i had discovered when I was a child. That rumble you are talking about ...I don't have to flex my entire face to do that. I have aquired finer control over the exact muscle..Initially I had to bat my eyelids to do that, but now I can do it without batting my eyelids. And that sound, I had been using for so long to keep counts while playing musics...that only I can hear and nobody does. So far, I used to think it was all in my brain, but now that you have said it, I can totally feel the exact muscle that i have been flexing all along. To be more precise, I can keep it rumbling for continuous sounds and I can make discrete sounds.
Wow that's pretty cool - I'm kinda jealous. I only have rough control of it. That takes a bit of concentration, and usually winds up initiating a yawn. You can really use it to keep a rhythm? Like without really thinking about it?
Amuzic Earth that exactly the same with me, I had suspected it for a while, but this confirmed it.
I can normally only produce a fairly drawn out sound but if I want a short burst of sound then I can do it by blinking my eyes at the same time.
Can other people do it in ears individually as well? I always thought this was something everyone does just never talks about.
I just tense my jaw a li'l bit and *rumble*.
As someone in computer networking, I appreciate the honest and accurate description of what VPNs do and when they're helpful.
Steve Mould: Do you need a VPN?
Tom Scott: You probably don't and here's why...
That's because you didn't ok know what it is
Steve described it just like Tom and even admitted that you don't need it for SSL webpages. Only domains and IPs are leaked.
@@theajayyy actually on that regard of "only for non-ssl sites": What use does a VPN have when the final link (between VPN endpoint and site) is again unencrypted? Sure most people won't directly see which site you visit, but anyone between the VPN and the server could still yank your plain text password out of the requests, or am I assuming the wrong things here?
@@reinei1 yes, but they don't know which IP this information is from. As well, there should be no man in the middle attack on the VPN side, whereas has a higher chance of being compromised (for tech illiterate people)
I HAVE HEARD A RUMBLE SO MANY TIMES IN MY EARS AND I'VE ALWAYS WONDERED WHAT IT WAS!!!
me too 😂
but only when i made it
I always perceived it as coming from the eye muscles.
@@kang_min_nal_ra if you close your eyes and look up hard you can hear it, too
Do you have control over it?
@@marc_frank yeah, but I only ever hear it in my right ear for some reason :-)
The reflection from the light into your eyes kind of makes it look like you don't have pupils near the end of the video.
Beginning of video it's bigger.
That is because Steve must obviously be a devil. You see, all this demon science flies in the face of the good and true, the correct thoughtless blind faith in stories of the unseen. /s
Dunno, but he definitely doesn't have the dark ring around the iris. My dad has that, and it's pretty neat.
Jamie Hosmer contacts maybe
@@jamiehosmer1481 For those wondering, the dark ring around the iris is called the corneal limbus.
As an audio professional, you can not imagine my appreciation when you opened by saying 'damping' instead of 'dampening'.... you've made at least one person extremely happy today...
0:29 Well are they going to sing, or eat pizza? You can’t do both.
Oh, I can contract just that muscle without scrunching up my face and hear less sound. Now I know how I do it.
hey, me too
Me too 🙃 I thought about describing how I do it but I can’t really... I close my eyes and then I somehow tense up the middle of my head :D
I've been doing it for years and no one believed me. I've been using the ability to lessen pain from loud noises like being too close to the speakers at music festivals. I've had so much skepticism from people when I try to explain it.
Cool, I guess from now on we shall be called the *Tensor Tympani Muscle Dudes*
Me too. I’ve described it to many other people, but they always have no idea what I’m talking about
Amazing, I've always been able to 'actuate' the malleus muscle alone to make that rumbling sound since I was a kid, never knew what it was or if anyone else could hear it... It's a bit like flaring your nostrils or wiggling your ears, not common voluntary movements but still possible to learn and train. Thanks Steve for this. Also your impedence matching explanation is fantastic! Same situation can be applied in electronic circuits using a transformer to match the impedence (changing voltage levels like moving the fulcrum of a level). Cheers from Australia
Wow the tympannic muscle explains a mystery I've had since childhood. I've been able to flex the muscles in my ears to hear the rumbling as long as I can remember yet when I tried to explain to others no one believed me. I've been using the ability to lessen pain from loud noises like being too close to the speakers at music festivals. I've had so much skepticism from people when I try to explain it.
Thank you for finally providing me with an answer to a question I had forgotten I wanted to ask!
Get some God damn
ruclips.net/video/gzJePUquk1o/видео.html
I've always wondered what caused my ears to "rumble" when yawning! I thought I was the the only one.
Thanks for not dumbing this material down. The details and deep concepts presented make this even more interesting!
Not only is this fascinating and in the exact areas of biology and physics that I love so much, it was explained in an absolutely impeccable and very practical way. Your way with physical metaphor is absolutely brilliant.
Also, I have *always wondered what that rumble was!* I assumed it was just me being sensory overloaded at night and hearing my pulse more. It definitely also does activate at odd moments from time to time, as well as being able to be "switched on", and I'm relieved that it's not me pressing in on a blood vessel or something. Thanks!
I'm a sound tech by trade, I thought I knew how the whole "how we hear" thing work at this point. Turns out I don't! Thanks for enlightening me!
TIL: My ears have a built-in amplifier.
Impedance matcher. Not quite the same thing. An amplifier requires power because it increases the energy of the signal. An impedance matcher just allows the same power to pass into a different medium.
YES. Thank you !
Since I'm little I can create a rumble in my hears without squishing my face like you did. I always wondered what it was and for the life of me I couldn't figure it out for sure when I was a teenager. And then I simply forgot to make sens of it until you gave me the answer ! I checked and some individuals can voluntarily contract the tensor tympani muscle which produce a rumbling sound. Yay for bonus knowledge :D
Big up for all your work. You are by far one of the most interesting content creator I've come across on internet. You make us want to understand everything. You deserve much more recognition but I'm scared we would get even fewer videos haha.
So glad I found your channel !!!!! Been looking for this type of information my entire life !!!!! Much thanks an I’ll definitely support
The tensor tympani is my favorite muscle!
I can move my Tensor Timpani whenever i want, without scrunching my face up. being able to control your Tensor Timpani is a fairly rare trait, as far as I know.
I've always used it to down out things if they bother me.
same
Same here
I love the fact that in a multilayer impedence matching material, the impedence of each layer forms a exponential curve. In other words they are log-linear.
Steve I just want you to know how much I appreciate the subtle humor you put in every video. BMW blinker joke made me laugh out loud, and the family singing was hilarious. Keep that up...
9:08 - 9:16
Say that 10 times quickly
Tonic Tensor Tympani Trouble Tango!
Regarding VPNs: It's important to note that while it makes sense not to trust your ISP, if you use a VPN provider, you're really just shifting that trust to them.
Also, DNS (
Firefox has now switched to using DNS over HTTPS by default.
DNS over TLS is great and all, but the ISP can still see the IP you are connecting to and can do a reverse DNS lookup. They need to know this to route you. Something like tor is more trustless, though it only works for tcp.
@@theajayyy that is correct.
You do at least get more privacy with servers that are behind the same IP and switch via the `Host` field in the HTTP header though.
I definitely trust a VPN more than any ISP
I've already seen firsthand how each treats traffic
@@KaitouKaiju I trust an ISP governed by my countries laws more than an VPN "based" whenever benefits them the most
The build time on that model must have been epic. Thank you. It’s so helpful to see it so clearly.
I used to think that "rumbling" was just in my head. I can make it happen just by closing my eyes and I always envisioned a fan in my head because it kind of sounds like wind blowing past my ears, especially when you try to keep it going for as long as possible it fades into this rhythmic rumble, where it fades in and out, which kind of sounds like a large fan's blade spinning slowly. To finally have an answer to a phenomena I've been experiencing since I was a little kid makes me relieved, and even kind of happy. What a wonderful video as always Steve.
So many people here finally have a name for their ear experiences 😂
ok wait at ~ 4:20 you're saying in addition to seeing upside down I also HEAR UPSIDE DOWN?
Your ear unlike your eye cannot tell the direction of the course of sound, so hearing upside down is not even a thing.
@@rinrin4711 Check out Steve's video of about a month ago (March 2020) entitled "5 Interesting things, episode 3.) Thumbnail has a pic of an owl with one ear up and one ear down. It's not exactly "hearing upside down" but it's a curious thing.
@@rinrin4711 Ears can(!) hear that. But since both are 180° phase shifted there is no difference. They can hear much more subtle differences than 180° "flip".
@@leocurious9919 I said ear, not ears. Using both ears your brain can tell the direction pretty accurate, but one can't.
7:50 The tensor tympani is basically a mechanical dynamic range compressor (DRC), as is the iris. Digital DRCs help avoiding loud sounds when switching between audio content mixed differently (eg. switching between videos or from classical music to electronic music and back). Properly mixed audio employs some amount of DRC through gaining and light compression. Cameras do DRC on capture by dynamically adjusting exposure according to different lighting conditions.
You never cease to educate, entertain and amaze.
Thank you for your work !
I can actually manual use the muscle in my ear I can force myself to hear the rumbling lol.
7:50 sometime when I was a lot younger, I somehow learned to flex this muscle at will with no affect to my expression. When I tried to explain what I was doing or what I was hearing, I always said it sounded like the force grip used in Star Wars ruclips.net/video/zSKqiAVRvs0/видео.html but a lot louder. I thought I was crazy! Thanks for a proper explanation as to what causes the sound!
remove the ' ) ' at the end of the link.
Honestly in love with your videos, never change
i always wondered what that rumble was! awesome video ^~^ i'm practically in love with mechanical movement
I actually have full manual control of those muscles.
Ikr, it so easy, no face scrunching, no nothing
I can control my tensor tympani muscle and make it contract whenever I want, but until today I didn't know the name of that muscle 😊
Easily my favorite video of yours. I never realized how much I didn't know about the middle ear. Thank you!
I just learned about the tensor timpani two days ago from another RUclips video. Ever sense your video on ultrasound gel, I've been more aware of the challenge and importance of impedance matching in various phenomena. I think impedance matching is important not just to let sound energy from the air into our ear, but also for letting sound energy from our heads into the air. When you cover your ears with something firm, like the palm of your hand, you can hear yourself breathe and talk much more loudly than normal. This is called autophony, or hearing oneself. While we normally see the outer ear functioning like one of those microphone cones that crooners used to sing into, I think it also functions like the flared bell of a trumpet, getting the vibrational energy from the body of the thing out into the air and, in effect, reducing internal reflections. When the ear is blocked, these vibrations don't "leak out" into their air at the same rate, and more of that energy is retained in our heads and is ultimately perceived as a loud sound.
That's one of the weird muscles I've learned how to flex actually.
8:15 I can do this on command. I never knew if this is a normal thing humans could do 🤔
Beautiful video, it really clearly describes such a technical and multi-disciplinary concept. You are one of my favorite RUclipsrs.
This is the most interesting talk about ears I've ever heard. Thank you, just thank you so much.
Whoever made the ears is the most intelligent being there can be.
So I can tense my tensor tympany on command without tensing any other muscles
same here, i occasionally use it to "lower the volume" of the sounds i hear
Potential gainz?!
@David van Ecke holy shit! i this should be a sexuality LMAO
@David van Ecke wait is that seriously a thing??
Just wanted to say I'm really happy that you start about understanding something intuitively because most of the time that's what I do and then I have to sit through an explanation of something I intuitively already understood. Maybe I don't know the exact terms, but in a lot of ways one can already understand how something works by intuition. It's a great skill to nourish and you can cherry pick the bits of information you really want to deepen your understanding of. Thanks for not under or over estimating your crowd :)
Any video that gives insight to wave mechanics earns a thumbs up from me.
Can anyone else just make their ears do the “rumbly sound” i’ve been makin my ears do that since i was little tmyk
I can,when I try to explain it to my friends they say I'm crazy 😂
I have to close my eyelids or defocus my eyes to do it, but yeah!
I can do it
"Do you need a VPN?"
No.
Nobody does. HTTPS exists.
Remember when everyone was going against nordvpn on any video it was in?
True, i always say: "if you have to ask then you don't need a VPN".
Also encrypted DNS (DoT and DoH) is now quite well supported, rather use that if you are worried about leaking domains.
Actually using a VPN can even reduce the privacy, because the VPN provider acts per design like a man in the middle and is therefore able to capture all traffic. NordVPN attracted multiple times attention for their questionable practices, especially regarding security and privacy, i would not trust them.
Running wordpress without HTTPS is btw always a bad idea even with a VPN, because at the endpoint it is not encrypted, so anyone after them can again see everything, that just shifts the problem... Since Let's encrypt there is really no excuse, most hosters enable HTTPS for free these days.
I need vpn because in my country all forms of porn/nsfw content is blocked but I just use a free app
Not even for torrenting?
This was an incredibly helpful visualization! so cool to see how parts of our hearing work!
Wow, I just kept learning new things whilst watching this. Brilliant video Steve!
Thank you!! Your videos are so useful for my classes!!
One of the best science/info shows on RUclips. I just love your videos so much. You explain things so well! Wish you were my science teacher back in school.
I'd like to see a complementary video explaining what kind of effect we have on that system when we get hearing loss from excessive exposure to loud sounds.
This video is amazing! Was able to understand everything clearly ! Thank you
You just helped me solve something that's always bugged me. Whenever I feel like something is going to hit my head close to my ear, I always felt that rumble in that ear. Now I know it has a name. Thanks!
Steve this is an incredibly nice Video...not less than any of your other wonderful videos...well done young man.
I always wondered what the dumble sound was. Thanks you very much for explaining this.
Oddly enough, this video helped me in terms of visualizing why I sometimes need a matching network in amateur radio.
Very cool explanation for impedance matching! Beautiful model
As soon as you mentioned that something like 0.1% of sound actually gets successfully captured in earlier stages of our ear due to impedance differences in the mediums of air and the ear fluid.........and then showed the setup of a wave function device that had a level in the middle...........I immediately just went "OOOOOOOOH, leveraging (lol) mechanical advantage to enhance the magnitude and accuracy of the audio our ears pick up?? Woooooow, NEAT!" lol. Put that business together nice and quick once you gave me the tools to do so, haha. Although I admittedly was too quick to assume "that was it, I figured it out" and you caught me off-guard in revealing there was a second such lever mechanism that helped amplify incoming sound.
Super fun and informative video, as always. Keep up the excellent work, my friend. What you contribute to society through such videos does not go unappreciated (b'-')b.
That tensor timpani muscle description is fascinating, I've experienced this (not as you described) and always wondered what it was. If I am listening to loud music on headphones and turn it off. I can feel this relaxation effect in my ear. There's an accompanying sound (but not really a sound) sensation but it is pretty unique. The sensation is of something relaxing that you never realized was tense. There's nothing else quite like it. I also hear a rumbling when I scrunch my face that is not the same, I wonder if this muscle is more than just full on or off.
thank you! i always wondered what that rumbly sound was!!
@Steve Mould 9:09 I’m very impressed if you did that first take!
This is insane, I love your videos so much. Levers are one of my most favorite concepts and who knew it would be in my body.
Never heard it explained like this. Incredible demos!
great video and really informative on a physics level which really speaks to me and draws me back anytime you release a video
Incredible video!! This is one of the best explanations of this that I’ve ever seen! Keep the amazing videos coming.
6:12 it's incredible! I love your videos and the way you introduce the subject. It's a beautiful representation of Nature!
God damn the eardrum is way more amazing than I thought, really good explanation of how it works
That was awesome Steve. Thanks a lot
Thank you for teaching me about the tensor tympani, I have voluntary control over this muscle, and it will, on rare occasions, fire without my input. So cool to learn this.
That reminds me that I can hear that crackling noice most of the time. I can be totally relaxed too.
This makes exam prep much easier, I love you Steve.
The ear drum size vs. thing-at-the-end-of-the-bone-lever size part reminds me of hydraulics, where you apply pressure across something of one surface area, it's transmitted through a fluid to something of another surface area and you get a proportional advantage (or disadvantage). Same concept used for construction equipment like diggers and stuff.
Great practical analogy of pressure waves, very intuitive 👌
Crisp and clear explanation....
Very well explained Mr Mould
Wow! Thanks for that tensor tympani muscle info. I was always wondering about that but couldn't come up with a proper request to find an nswer
Thank you for taking the time out of your day to teach others about things like this. I greatly appreciate it, have a great week!
It was a nice video with useful information. thank you for sharing.
I love your videos so much! You're a super genuine creator, and discuss interesting things. I remember finding this channel after I binged some science videos and I was certain it's going to be a meme for me and you proved me oh so wrong. Definitely one of my favorite channels. Please continue ❤️
Brilliant video, I cannot believe that I have lived so long and never wondered about where that rumble comes from when I yawn.
Thanks
8:15 HUH! I wondered about that rumble since I was Little! I supposed it had something to do with muscle tension and their vibrations, but I didn't knew about the specific muscle! Great stuff!
Always love your videos Steve, thanks for sharing your curiosity with us through your always fantastic explanations!
Dude your videos are incredible. So low key but amazingly informative explorations of the design features of the world around us.
P.s. I can flex my tensors without scrunching my face. I always wondered what that was!
7:35 Similar force transmitted from a large surface area, to a smaller one -> higher pressure. And sound is pressure waves.
I’ve always had conscious control over those tenser timpani muscles. I didn’t know what they were until now but I can both create that rumbling and protect my earring whenever I want. No face scrunching necessary. Thanks!
This was really interesting, thanks Steve!
I can tense the eardrum muscle consciously at will.
Always wondered what that rumbly feature was.
Great video.
The video quality is excellent. Keep it up.