good observation. It's not just initial amplitudal force, but the resonation. By dampening you remove the ability objects in the envrionment from having symphathetic responses as well.
We've been rolling that expensive s*** on the inside of custom cars for years. You know why really expensive luxury cars are so quiet? Just a bunch of this stuff.
Dynamat(spelling) was very expensive. One my first car I had the whole car with that crap, then I found a much much cheaper product, I can't remember the name of it though, but it was just as good for a quarter of the price.
@@gabe8168 People can do it for cheaper, and it's because of what you said. Companies don't set an arbitrary price right? so someone can just sell it for cheaper than them and thus get more attention. A more reasonable price easily attracts more customers.
@@gabe8168 Wtf, yes they do. Companies can markup however the fuck they want and a noise cancelling tape is absolutely a material one could price gouge
I remember a Lexus car commercial where they had all these men each play a square of sheet metal like a cymbal, and one of them was damped, showing that the car's exterior was a sandwich of steel, resin, and steel to block out all the vibrations during driving. The damped square simply made knocking noises instead of clanging ones.
For completely enclosed environments like a car, you want interleaved layers of high/low/high density material. The density changes cause sound to reflect back to the direction it came from, so it never reaches the passenger cabin. In non-enclosed situations like in this video, reflecting sound back doesn't really help since the sound can just travel through the air, around the object, to your ears. So your priority will be dampening vibrations from occurring in the first place.
Pro-tip from an orchestral percussionist, for the next time you bang a gong: aim for the middle horizontally, but two-thirds of the way down (not dead center). It’s way louder and much more resonant!
This is exactly the same reason that you don't pluck or bow a string exactly in the center. Just look a pianos, guitars, harps, violins, etc. Playing closer to the ends excites more of the higher harmonics, but plucking too close to the end gives you very little of the lowest harmonic which also does not sound very good.
@@edwardblair4096 Harps are usually intended to be plucked in the middle. But with skill you can also try it on acoustic guitars. It may be that even Pythagoras researched on this.
I did something like this when I put the ceiling up in our basement. I used wood blocks in the trussings with the visco-elastic polymer in between and hung the ceiling on the blocks. Works wonders.
Quiet some time ago, Ford began making their truck cabs out of what was trade named as "Quiet Steel", which is essentially just a finished product of the multiple layers. The interesting part was that it was fully weldable. I'm not sure if they're still using it today since switching to aluminum for many panels, but it was impressive at the time.
Been using stuff like this for about 30 years in my car audio installs. Sound deadener like dynomat and killzmat Works great to stop rattles and panel flex 👍🏻
I couldn't afford that stuff when I built my Vw bug, but I used HVAC duct bubble wrap under the carpeting, headliner, and inside the door panels. Just glued it in with 3m headliner adhesive. It's basically two metalized plastic mylar type material and really strong bubble wrap in the middle, not like the stuff you ship stuff with. It's used to insulate metal duct plenums. Didn't work as good, but did quiet the car down some (less thin metal sound from the door, floor and roof panels), and was a good insulation for the sun beating down on the roof. I had an all black interior, too, so it needed it, lol.
Love this channel, teaches me so much stuff I didn’t think I needed to know but become endlessly fascinated and yearn to learn more of everything he presents. Guess my next fascination is sound dampening tape.
25 yrs ago I learned drums in my bedroom, and i just used 1 or 2 strips of duck tape (that's what it was called) to cut the piercing noise out of my cymbals. I also used it on the inside of the drum skins, that really softened the sound of all the drums.
Duck Tape is actually the classic brand name, like Coke and Kleenex. They're still around, but not as big as 3M. "Duct tape" is more of a common misnomer because laypeople thought it made more sense. The stuff is garbage for anything permanent (while great for quick fixes as long as it's not made poorly,) and real HVAC tape for patching duct work looks...exactly like the product in this video. Got me wondering just how different this product is from common aluminum HVAC tape.
@@VoltisArt Hahaha, definitely! Expose that "duck tape" to any kind of heat and it turns to very combustible dust! I'm pretty sure people have started fires in their homes using it as duct tape on things like chimneys!
It's probably more accurate to describe it as noise prevention tape than noise canceling taps as you are preventing the noise before it can be created, not canceling existing noise.
I think you needed to use fresh strips of the 3m tape for it to work properly, the wrinkles would allow much more flex than if it was a nice flat contact.
@@plexi3dbut this is the guy that made entire rooms of mirror, and of special black paint. I’m sure he’s not afraid of wasting an extra few inches of expensive tape.
@@plexi3dThere is a 3M thick dual sided foam adhesive tape with very strong glue. Putting thick aluminium foil (or other metal) on top of that may damp noise as good.
Hold on for a second. At first it was 108dB. Than after adding simple carpet tape it was down to 103-104dB. -5dB change means the sound is aprox. 30% original sound power value. Therefore it may mean it is now way quiter.
@@ubersham Unless the differences are very large, it's unlikely to make much difference at all on a logarithmic scale. Even doubling the height is only 3dB
Wild that you had the acoustic panels behind your for much of the video. It would be interesting to add them to the test too. The tape seemed to kill the decay, and the panels are good with attack.
There is a material for deadening the sound in stainless steel sinks. It is a sticky pad with a sheet of soft copper on the back. Lead would probably be better, but now we have rules.
My old Kenmore had that. I haven't had the panels off my new Whirlpool, but it is very quiet and I expect it has dampening. They also use this on quality metal sinks. Makes a huge difference.
@@forest-dwellermost likely the laundromat was illegally dumping their noise out the back of the establishment. High end ones actually bottle theirs up and sell it to China, where it usually just gets dumped in the ocean.
This is a version of a product called Dynamat. We’ve been using it for years in high end car stereo installations on all of a car’s body panels and interior panels. The material is sonically beneficial in a number of ways. The material is essentially soft flexible lead sandwiched between a layer of industrial adhesive and thin aluminum flashing. It blocks outside ambient noise when the vehicle is stationary and outside ambient and road noise when the vehicle is in motion. It also works as a sonic decoupler eliminating vibration produced by the speaker from transferring to the outside body panels effectively keeping them from turning into a speakers. In the application of subwoofer installations in trunks, it adds weight to the trunk lid keeping it from rattling on the outside and keep the bass spl level higher on the inside allowing the subwoofers to run more efficiently with less power. Ultimately its job is to keep sound in, keep sound out, decouple and eliminate vibration.🎉
no, the microphones listen to the outside noise frequencies and emit the exact opposite signal. When the soundwaves collide, they effectively “cancel out” both sets of sounds. The opposing peak-and-valley structure of the two waves results in silence.
This is why those dampening foams work. They absorb kinetic energy of the sound wave. And the cone structure helps to disperse that energy over more area. That's why (if you don't mind the look) you can use paper egg holders to make a space more quiet :)
@4:28 You needed to also test is with duct tape (also double-stick and of the same thickness as the dampening tape) in between to have a more apples to apples comparison.
Earl Geddes worked on CLD for a car company. He was the pioneer of subwoofer theory in audio. He used CLD in his audio listening room walls and also in the cabinets of his loudspeakers. He's an unsung genius.
Does this noise-cancelling tape have the same effect as the bitumen sound damping mats often used on large metal surfaces in, for example, delivery vans and on the inside of washing machines?
This is a way to make noise-making objects not emit as much sound as they normally do. For environments like a car, you want to block external noise (stuff you can't make quieter) from entering the passenger cabin. That's accomplished by alternating layers of high/low/high density materials. The density changes cause sound to reflect back in the direction it came from.
It's in the extra secret catalogue. You have to sign an NDA before they acknowledge its existence. ...that's as much as I can say before the lawyer ninjas are released.
You should do one comparing the dampening tape to something like Moongels, which is what I’ve solely been using on my drums since like 2002. I find the tape dampens them way too much unless you’re trying to turn a god set of drums into an apartment kit lol.
It is really cool. But where I live it is hard to come by, you have to buy a lot and it is expensive. Therefore I ended up using car isolating material, it is a black material that reminds me of asfalt and soft caramel. I can recommend it on the inside of a washing machine and the back side of a kitchen sink.
@@Heckrund I have used two different products, but non of them have a brand name. I have a small peas left of one of them, but there is no branding on it. They are sold under names lige vibration damping matt, AUDIO SILENT COAT, SILENT COAT, DYNAMAT XTREME, Sound deadening plate. One of the I got from a car audio company, the other one was from a mechanic. I know that you can also get them at a kitchen supplier, cause you can use it dampen the sounds from the table and drawers. ( it depends on the Kitchen table if it is worth it )
@@TheBrokenLife So I think it depends a lot on the product you use. The ones I got did not smell that much, and I actually think that is important, cause I think it can be unhealthy, since it is a oil product. Also I am using them in my house thus smell is a no go, but if you are using them in your car you need to be aware that some of them get really brittle at temperatures below 15C. I warmed mine to 25-30 C before applying them, it makes them way easier to bend. Also they are quiet heavy, thus they might not be helpful everywhere. They are also a lot thicker than the 3M tape. Mine was about 2.5-4mm.
@@Petch85 I only mentioned the roofing materials because you specially brought up asphalt. 😉 In reality, for small jobs, the actual dynamat clones (which is what it sounds like you used) would probably be the better way to go. For the guy asking for a brand: Just look up Butyl Sound Deadener. Normally the automotive stuff has a foil side which is also a heat barrier.
What is the difference to alubutyl? It is used to line car doors if you want yojr speakers to sound good. But it is pretty cheap. Sounds like it should work the same; the aluminium is connected to the car metal using a flexible material..
pls create a gap between plates, mask it from three side ( top open) and add water in between gap and seal the top with tape. and then measure the effect ref.: 4:05
Would be interesting to know if some one would or had discovered a way to dampen the intensity of the sound but without removing any frequencies and sustain of that sound. This would be very beneficial for Drum Kit cymbals for example. Now if you must reduce the sound of a Drum Kit you basically have only two options. Either you dampen the Drums which affects the sound of the drum, or you can use some Cymbal- or Drum Shields but that will change the visual appearance of the set and hide the drummer more.
Great vid! One suggestion, it might have been fun to see you experiment with common household or grocery items to see which made the best homemade dampening layer using this technique. Gummy bears? Orbeez? Peanut butter??
I think people like carpet glue. It stays tacky for years and years. Other stuff hardens over time. Btw, I used gummy bears in my basement. Huge mistake.
That's what my neighbors use!!! I totally understand when they speak in a normal, disguised but understandable voice even though they are far away (it's all crazy). It sounds like I can hear a distant buzz but they live atttach to me. I have thought about an ultrasonic suppressor and it is the 'only possibility!!! I would like to use a 'sound meter app (but I don't care in this case to know the dB of the noise) but also to record all the noises, voices during the night. Can you help me? Thank you very much.
Love your content! I'm so glad that high quality educational content has been able to flourish and that people can make a livlihood from it, good for you sir. I want to say however that betterhelp is extremely controversial in the therapy world and is generally seen as harmful to both its clients and its industry. Noone should take my world, but if anyone agrees with me after doing their own homework on it then spread the word. Companies live and die based on word of mouth.
I use this in the trunk of my suv bc i have 4 12 inch subwoofers with a ported box, it prevents the car and trunk from vinrating and rattling, i put it in the roof of my car, line it with my trunk, back of the license plate, and door panels soctheres absolutely zero vibration or rattling, i did it when i was 18, im now 25 in two weeks.
@@shazam6274 I appreciate it lmfaoo it's been a few years since I've been able to play my system bc of my car being broke down and needing a new engine and having my license suspended lmfao,
@@shazam6274 it is FOR SURE. And I've realized it a year and a half ago whenever there was damn near a death by drunk drivers almost every week in my city. That's why i haven't been in a hurry to get my license reinstated. Bc I'm when I do, im never gonna be home and I'm gonna be out driving around town just cruising listening to music on my free times.
The car sound deadening adhesive materials vary in thickness, I wander if there is a relation between middle layer thickness and the frequency being damped. Like thin layer for high frequency and thicker layer for lower freq.
Did taking standard aluminum tape and renaming it acoustic tape (thus making it sound sheik), cause the price to rise? Aluminum tape has fantastic adhesive and that's what you have a roll of. So do I .. brand is ShurTape and is primarily used as extremely moldable (but not very tough) duct tape. Very handy stuff ..
@TheActionLab So lets say I have neighbors that mess with me bc they have no life ok. Now that they've tried everything for 2 years bc idgaf about no lifes they've put subwoofers or super tweeters in the ground and play low frequencies that shake the house. Lived in my house for 15 years and for the first time not a single flower bloomed in the spring so clearly its a damaging frequency. holy scrap do you think putting a Visoelastic polymer wall in the ground will stop something like this?
I don't find the tap on the outside to be a fair comparison for viscoelastic layer. A rigid adhesive would be a better comparison, I think. Epoxy? The question I was left with after this video is whether a thicker cookie sheet is better than gluing layers to get the same thickness.
Is the heat that is dissipated enough to be captured with a thermal camera? That could be interesting to see how the heat dissipates and radiates away when struck, especially from multiple points.
They should stick disks of this stuff on the sides of the wheels of our rapid transit vehicles here in Boston -- would cut down on the squeal. Resilient wheels have been made going back into the 1800s, but this is newer technology.
Wish my apartment wall had that. A few years back they switched us from electric to gas heat exchangers. While it did save a lot on heating (although long term electric heat exchangers would have been greener) they put all the exterior units right outside my bedroom wall. When they are running it's really annoying in the bedroom (and the living room is loud because the other end of the unit is there, although that's only loud when my apartment's unit is running, not everyone's.) Edit- how does it do at other volume levels? Is it linear or logarithmic?
I was playing a kit with a really bright ride cymbal, and a couple of pieces of gaffer tape/duct tape on the underside really dropped the high frequencies - no paper needed, but I've only seen that on drums!
@@BarryRowlingsonBazThey also used to put old blankets inside a base drum. The 1st disco drumkits were muffled like this to reduce decay. Then 1970th drummachines were designed to imitate that disco sound. This is why they didn't sound at all like an (unmodified) acoustic drumkit.
Even though it's obvious it works, I've never understood its value in car audio installations. Is it more for reducing road noise than for modifying the audio in any way? A tape or nat format seems to me like it would dampen only higher frequency resonance, which I typically don't notice in any vehicle, either from road noise or audio playback. Usually a quite thick foam rubber mat similar to carpet underlay is good for taming the interior down to lower frequencies.
It would do both. Road noise, unintended audio effects from the speakers moving parts of the frame and sound waste (interior volume lost because the sound is broadcast outside by body panels) are all worth attending to. I don't think YT orders comments reliably, but two down from here for me, @stereothrilla8374 explained it in more detail.
For those who are thinking 108 and 91 is not that much of a difference, decible is a logarithmic scale with base 10 means 10 db se 10 times louder than 9 and 100 times than 8 and so one . I commented it because a friend sitting beside me thought same .
Ok so you said with the tape or whatever it turns the energy to heat so I have one question and hoping for a video or something in response can you try to cook something using the same principle of turning the noise into heat
![BLACK BAG - Official Trailer [HD] - Only in Theaters March 14](http://i.ytimg.com/vi/Du0Xp8WX_7I/mqdefault.jpg)
In all of the methods you demonstrated, even if the attack volume isn’t much quieter, the decay time is much faster.
What are you virtual riot?
good observation. It's not just initial amplitudal force, but the resonation. By dampening you remove the ability objects in the envrionment from having symphathetic responses as well.
@corvus8638nope. He doesn't seem like the type to learn about stuff either.
Yea, all the objects that he attached to the metal tray decrease the time it resonates
@@MapSpawnboom
We've been rolling that expensive s*** on the inside of custom cars for years. You know why really expensive luxury cars are so quiet? Just a bunch of this stuff.
If I recall it's very similar to urethane
Urethane? More like our ethane :)
Yepppp, it works great on metal air ducts in homes too.
@@paulroberto2286boooooooooo
Dynamat(spelling) was very expensive. One my first car I had the whole car with that crap, then I found a much much cheaper product, I can't remember the name of it though, but it was just as good for a quarter of the price.
Since the tape is so expensive, it's really helpful to know the mechanism involved so that we can replicate it for much cheaper.
Ok China.
@@EikottXD For home diy. Though if China or anyone came out with a much cheaper version, it would be a good thing
It’s expensive for a reason, companies don’t just set an arbitrary price. I’d like to see someone actually try to do it for cheaper
@@gabe8168 People can do it for cheaper, and it's because of what you said.
Companies don't set an arbitrary price right? so someone can just sell it for cheaper than them and thus get more attention. A more reasonable price easily attracts more customers.
@@gabe8168 Wtf, yes they do. Companies can markup however the fuck they want and a noise cancelling tape is absolutely a material one could price gouge
I remember a Lexus car commercial where they had all these men each play a square of sheet metal like a cymbal, and one of them was damped, showing that the car's exterior was a sandwich of steel, resin, and steel to block out all the vibrations during driving. The damped square simply made knocking noises instead of clanging ones.
My Kia body must be a sheet of highly tuned sheet steel with no pesky insulation or resin
@@MushookieMan dont let somebody steal it
For completely enclosed environments like a car, you want interleaved layers of high/low/high density material. The density changes cause sound to reflect back to the direction it came from, so it never reaches the passenger cabin.
In non-enclosed situations like in this video, reflecting sound back doesn't really help since the sound can just travel through the air, around the object, to your ears. So your priority will be dampening vibrations from occurring in the first place.
@@MushookieManhave worked on kias. It pretty much is except for the plastic bumpers and suspension parts
qa😊😊😊
Remember, BetterHelp sells your health data to outside companies!
This comment should be pinned!
What's the concern with selling that data? I'm genuinely curious, not trolling.
@@steltronSuddenly your health insurance goes way up when they discover you have a health problem
@@steltron I value my privacy. I know it's getting harder and harder to maintain privacy but I try to everywhere I can.
Figures there was a catch.
Pro-tip from an orchestral percussionist, for the next time you bang a gong: aim for the middle horizontally, but two-thirds of the way down (not dead center). It’s way louder and much more resonant!
This way you don’t hit the primary node and cause waves that cancel each other out.
This is exactly the same reason that you don't pluck or bow a string exactly in the center. Just look a pianos, guitars, harps, violins, etc. Playing closer to the ends excites more of the higher harmonics, but plucking too close to the end gives you very little of the lowest harmonic which also does not sound very good.
@@edwardblair4096 Harps are usually intended to be plucked in the middle. But with skill you can also try it on acoustic guitars. It may be that even Pythagoras researched on this.
I did something like this when I put the ceiling up in our basement. I used wood blocks in the trussings with the visco-elastic polymer in between and hung the ceiling on the blocks. Works wonders.
That's a really good idea. 👍
Added a load of this to the inside of a van when converting it to a campervan. Made a huge difference!
Quiet some time ago, Ford began making their truck cabs out of what was trade named as "Quiet Steel", which is essentially just a finished product of the multiple layers. The interesting part was that it was fully weldable.
I'm not sure if they're still using it today since switching to aluminum for many panels, but it was impressive at the time.
It was probably layers of asbestos and mercury lol.
@@thirstfast1025 This wasn't _that_ long ago. More like 2005.
Missed opportunity to call it "silent steel". I guess it wasn't technically silent lol
They didn't say it was long ago....they said it was a quiet time ago.
@@marklindsey1995 ...the edited comment calling out my typo. 🤣👍
Been using stuff like this for about 30 years in my car audio installs. Sound deadener like dynomat and killzmat Works great to stop rattles and panel flex 👍🏻
My first thought was sound deadening material. I used killmat on my truck build.
I couldn't afford that stuff when I built my Vw bug, but I used HVAC duct bubble wrap under the carpeting, headliner, and inside the door panels. Just glued it in with 3m headliner adhesive.
It's basically two metalized plastic mylar type material and really strong bubble wrap in the middle, not like the stuff you ship stuff with. It's used to insulate metal duct plenums.
Didn't work as good, but did quiet the car down some (less thin metal sound from the door, floor and roof panels), and was a good insulation for the sun beating down on the roof. I had an all black interior, too, so it needed it, lol.
Love this channel, teaches me so much stuff I didn’t think I needed to know but become endlessly fascinated and yearn to learn more of everything he presents. Guess my next fascination is sound dampening tape.
I went from never having heard the phrase “viscoelastic fluid” before in my life, to it being in the top 5 most heard phrases
Sounds like 3M marketing team came up with a new jargan word. Like Apple with the retina display.
@c31979839 The term is and has been used to describe engine oil, grease, personal lubricant etc...
It's the viscosity and elasticity
25 yrs ago I learned drums in my bedroom, and i just used 1 or 2 strips of duck tape (that's what it was called) to cut the piercing noise out of my cymbals. I also used it on the inside of the drum skins, that really softened the sound of all the drums.
Duck Tape is actually the classic brand name, like Coke and Kleenex. They're still around, but not as big as 3M. "Duct tape" is more of a common misnomer because laypeople thought it made more sense. The stuff is garbage for anything permanent (while great for quick fixes as long as it's not made poorly,) and real HVAC tape for patching duct work looks...exactly like the product in this video. Got me wondering just how different this product is from common aluminum HVAC tape.
@@VoltisArt Hahaha, definitely! Expose that "duck tape" to any kind of heat and it turns to very combustible dust! I'm pretty sure people have started fires in their homes using it as duct tape on things like chimneys!
There's also "moon gel"
Or as I call it, "Christmas and Valentines Window decorations made of Jello"
Thanks!
It's probably more accurate to describe it as noise prevention tape than noise canceling taps as you are preventing the noise before it can be created, not canceling existing noise.
Maybe even more accurate calling it noise dampening tape.
@@c31979839 Or sound dampening/deadening, since 'noise' has a more specific definition.
I think you needed to use fresh strips of the 3m tape for it to work properly, the wrinkles would allow much more flex than if it was a nice flat contact.
I think that was enough for the demo as the price of this tape is a real loud bang.
@@plexi3dbut this is the guy that made entire rooms of mirror, and of special black paint. I’m sure he’s not afraid of wasting an extra few inches of expensive tape.
@@plexi3dThere is a 3M thick dual sided foam adhesive tape with very strong glue. Putting thick aluminium foil (or other metal) on top of that may damp noise as good.
You are awesome Actionlab! I always get amazed with the variety of science experiments you present us!
Please keep the great Experiments coming…
Hold on for a second. At first it was 108dB. Than after adding simple carpet tape it was down to 103-104dB. -5dB change means the sound is aprox. 30% original sound power value. Therefore it may mean it is now way quiter.
Yeah, but human perception of noise is logarithmic too.
dB is done on a logarithmic scale because that is how we perceive sounds. So yes the energy went down by 70%, but it only sounds a little bit quieter.
That variation could be from the energy of the mass. He wasn't dropping it from a controlled height.
@@ubersham Unless the differences are very large, it's unlikely to make much difference at all on a logarithmic scale. Even doubling the height is only 3dB
You need about a 10db change to "double" the perception of loudness. Most changes below 10db won't be very noticeable
Wild that you had the acoustic panels behind your for much of the video. It would be interesting to add them to the test too. The tape seemed to kill the decay, and the panels are good with attack.
There is a material for deadening the sound in stainless steel sinks. It is a sticky pad with a sheet of soft copper on the back. Lead would probably be better, but now we have rules.
Some metal sinks make a loud "bonk!" noise by thermal expansion when hot water is poured in. May be this was a countermeasure.
This would be good on a washing machine, although, I do prefer the idea of suspending one magnetically in a vacuum chamber 😂
Put something vast and heavy on it. That will help. Serious.
My old Kenmore had that. I haven't had the panels off my new Whirlpool, but it is very quiet and I expect it has dampening. They also use this on quality metal sinks. Makes a huge difference.
It's on the bottom of metal sinks.
Mordern washing machines don't really make any noise. I know my LG doesn't.
@@forest-dwellermost likely the laundromat was illegally dumping their noise out the back of the establishment. High end ones actually bottle theirs up and sell it to China, where it usually just gets dumped in the ocean.
This is a version of a product called Dynamat. We’ve been using it for years in high end car stereo installations on all of a car’s body panels and interior panels. The material is sonically beneficial in a number of ways. The material is essentially soft flexible lead sandwiched between a layer of industrial adhesive and thin aluminum flashing. It blocks outside ambient noise when the vehicle is stationary and outside ambient and road noise when the vehicle is in motion. It also works as a sonic decoupler eliminating vibration produced by the speaker from transferring to the outside body panels effectively keeping them from turning into a speakers. In the application of subwoofer installations in trunks, it adds weight to the trunk lid keeping it from rattling on the outside and keep the bass spl level higher on the inside allowing the subwoofers to run more efficiently with less power. Ultimately its job is to keep sound in, keep sound out, decouple and eliminate vibration.🎉
I expect that lead has been outlawed for this now. But tin metal should work similarly.
so if i put the tape on my headphones will it have noise cancellation
guys let him cook
no, the microphones listen to the outside noise frequencies and emit the exact opposite signal. When the soundwaves collide, they effectively “cancel out” both sets of sounds. The opposing peak-and-valley structure of the two waves results in silence.
muting maybe but not cancellation
@@agisnnsksi dont even know what you mean
I guess IT will
Curious whether a second layer would increase the effect.
Upping this comment for bonus content sequel
This is why those dampening foams work. They absorb kinetic energy of the sound wave. And the cone structure helps to disperse that energy over more area. That's why (if you don't mind the look) you can use paper egg holders to make a space more quiet :)
Bro this video helps way more than you realize, thanks
@3:42 The ''constraining layer'' is simply a physical structural support, in addition to also providing an anchor point for the damping tape.
@4:28 You needed to also test is with duct tape (also double-stick and of the same thickness as the dampening tape) in between to have a more apples to apples comparison.
Hard metal fans are gonna be proud when seeing this 🔥💯
Earl Geddes worked on CLD for a car company. He was the pioneer of subwoofer theory in audio. He used CLD in his audio listening room walls and also in the cabinets of his loudspeakers. He's an unsung genius.
Does this noise-cancelling tape have the same effect as the bitumen sound damping mats often used on large metal surfaces in, for example, delivery vans and on the inside of washing machines?
the bitumen sound dampening mats work better as they have a thicker layer which also adds mass, thus lowering its natural frequency.
This is a way to make noise-making objects not emit as much sound as they normally do. For environments like a car, you want to block external noise (stuff you can't make quieter) from entering the passenger cabin. That's accomplished by alternating layers of high/low/high density materials. The density changes cause sound to reflect back in the direction it came from.
By now I'm pretty sure 3M also has portable holes like those in Who Framed Roger Rabbit in its products' catalogue
It's in the extra secret catalogue. You have to sign an NDA before they acknowledge its existence.
...that's as much as I can say before the lawyer ninjas are released.
Very nice explanation.
Kidnappers gonna have a field day w this one
James, your channel is the only therapy I need 😘
That explains why there's a big plate with goop sticking it to the bottom of my high-end kitchen sink. It definitely gets loud when it falls off.
You should do one comparing the dampening tape to something like Moongels, which is what I’ve solely been using on my drums since like 2002. I find the tape dampens them way too much unless you’re trying to turn a god set of drums into an apartment kit lol.
Protip, use window clings, waaaay cheaper, or sticky hands, I imagine if you taped them down they'd work just like this tape
It is really cool. But where I live it is hard to come by, you have to buy a lot and it is expensive.
Therefore I ended up using car isolating material, it is a black material that reminds me of asfalt and soft caramel.
I can recommend it on the inside of a washing machine and the back side of a kitchen sink.
Do you have any idea how the black sound isolation product is named? I was searching for it already a while back.
Many, many, car audio guys have used roofing materials for sound deadener before. It works good, but smells bad for awhile. 😆
@@Heckrund I have used two different products, but non of them have a brand name. I have a small peas left of one of them, but there is no branding on it. They are sold under names lige vibration damping matt, AUDIO SILENT COAT, SILENT COAT, DYNAMAT XTREME, Sound deadening plate. One of the I got from a car audio company, the other one was from a mechanic. I know that you can also get them at a kitchen supplier, cause you can use it dampen the sounds from the table and drawers. ( it depends on the Kitchen table if it is worth it )
@@TheBrokenLife So I think it depends a lot on the product you use. The ones I got did not smell that much, and I actually think that is important, cause I think it can be unhealthy, since it is a oil product. Also I am using them in my house thus smell is a no go, but if you are using them in your car you need to be aware that some of them get really brittle at temperatures below 15C. I warmed mine to 25-30 C before applying them, it makes them way easier to bend. Also they are quiet heavy, thus they might not be helpful everywhere. They are also a lot thicker than the 3M tape. Mine was about 2.5-4mm.
@@Petch85 I only mentioned the roofing materials because you specially brought up asphalt. 😉
In reality, for small jobs, the actual dynamat clones (which is what it sounds like you used) would probably be the better way to go.
For the guy asking for a brand: Just look up Butyl Sound Deadener. Normally the automotive stuff has a foil side which is also a heat barrier.
I used damping tape as an aerospace machinist back in the 80's to help reduce tool chatter vibrations.
What is the difference to alubutyl? It is used to line car doors if you want yojr speakers to sound good. But it is pretty cheap. Sounds like it should work the same; the aluminium is connected to the car metal using a flexible material..
Typically, as a standard, SPL should be measured from 1 meter away. You're more likely to get better readings from that distance, as well.
Fun fact: the cloister bell sound effect in Doctor Who was (allegedly) produced by hitting a gong that was partially submerged in water.
pls create a gap between plates, mask it from three side ( top open) and add water in between gap and seal the top with tape. and then measure the effect ref.: 4:05
Would be interesting to know if some one would or had discovered a way to dampen the intensity of the sound but without removing any frequencies and sustain of that sound.
This would be very beneficial for Drum Kit cymbals for example. Now if you must reduce the sound of a Drum Kit you basically have only two options. Either you dampen the Drums which affects the sound of the drum, or you can use some Cymbal- or Drum Shields but that will change the visual appearance of the set and hide the drummer more.
wow loved it
I like your science experiments even though i don't understand all of them or some at times i still watch them coz i love science stuffs.
Great to use them on my neighbours' noisy motor exhausts! 😊🙏
I need this tape.
I have a killer prank idea that I'd like to use on the main gong in a Shaolin monastery.
Great vid! One suggestion, it might have been fun to see you experiment with common household or grocery items to see which made the best homemade dampening layer using this technique.
Gummy bears? Orbeez? Peanut butter??
I think people like carpet glue. It stays tacky for years and years. Other stuff hardens over time.
Btw, I used gummy bears in my basement. Huge mistake.
3:50 17 db means only 7.07 times difference in energy but 50 times in amplitude
I believe a lot of sound dampening material they tend to advertise for cars is butyl rubber with an aluminum backing.
As a Native of Bellingham WA, I gotta dig your PacNW T.
0:39 Any idea of the app he's using?
That's what my neighbors use!!! I totally understand when they speak in a normal, disguised but understandable voice even though they are far away (it's all crazy). It sounds like I can hear a distant buzz but they live atttach to me. I have thought about an ultrasonic suppressor and it is the 'only possibility!!! I would like to use a 'sound meter app (but I don't care in this case to know the dB of the noise) but also to record all the noises, voices during the night. Can you help me? Thank you very much.
Great educational video.😊
Where do you get said viscoelastic layer?
Amazon. Dynamat
I am still watching ads, but I can say that piezoelectricity is real man
Gyanulax also.....is used as sound absorbing thing in building construction
“Can overheat if prone to overheating” reminded me of commercials that say “do not take this medication if allergic to this medication”
The Action Lab: making vibranium since 2023.
Is any form of this used in hearing products?
Love your content! I'm so glad that high quality educational content has been able to flourish and that people can make a livlihood from it, good for you sir. I want to say however that betterhelp is extremely controversial in the therapy world and is generally seen as harmful to both its clients and its industry. Noone should take my world, but if anyone agrees with me after doing their own homework on it then spread the word. Companies live and die based on word of mouth.
I swear 3M makes 2 products:
1. The most boring generic supplies
2. The craziest shit most people never hear of like this
If it converts the vibrations to heat I wonder if it would show up on an infrared camera.
It might be fun to actually see the tape warming up.
I use this in the trunk of my suv bc i have 4 12 inch subwoofers with a ported box, it prevents the car and trunk from vinrating and rattling, i put it in the roof of my car, line it with my trunk, back of the license plate, and door panels soctheres absolutely zero vibration or rattling, i did it when i was 18, im now 25 in two weeks.
HAPPY BIRTHDAY! I AM SHOUTING BECAUSE YOU LIKELY HAVE DAMAGED HEARING BY NOW.
@@shazam6274 I appreciate it lmfaoo it's been a few years since I've been able to play my system bc of my car being broke down and needing a new engine and having my license suspended lmfao,
@@DonovanHaumpy Perhaps it's all Karma's gift to you to keep you out of trouble ! 😀
@@shazam6274 it is FOR SURE. And I've realized it a year and a half ago whenever there was damn near a death by drunk drivers almost every week in my city. That's why i haven't been in a hurry to get my license reinstated. Bc I'm when I do, im never gonna be home and I'm gonna be out driving around town just cruising listening to music on my free times.
Try a piece of normal duct tape and also try a piece of metallic hvac tape...I will bet it also provides the dampening affect.
Mister James Orgill Is making serious noises when talking about silence. I prefer when you put your eliphant shirt sir.
Could you cover a wall with this tape to prevent noise from say the creaky bed that the neighbors have in the apartment next to mine?
The car sound deadening adhesive materials vary in thickness, I wander if there is a relation between middle layer thickness and the frequency being damped. Like thin layer for high frequency and thicker layer for lower freq.
Did taking standard aluminum tape and renaming it acoustic tape (thus making it sound sheik), cause the price to rise? Aluminum tape has fantastic adhesive and that's what you have a roll of. So do I .. brand is ShurTape and is primarily used as extremely moldable (but not very tough) duct tape. Very handy stuff ..
Cool. Is there light that can convert vibration onto different frequency/sound. Or maybe use the energy to convert it to different light.
Clicked quicker than the sound of the bell
@TheActionLab So lets say I have neighbors that mess with me bc they have no life ok. Now that they've tried everything for 2 years bc idgaf about no lifes they've put subwoofers or super tweeters in the ground and play low frequencies that shake the house. Lived in my house for 15 years and for the first time not a single flower bloomed in the spring so clearly its a damaging frequency. holy scrap do you think putting a Visoelastic polymer wall in the ground will stop something like this?
Scott Prop and Roll showed this tape on silencing drums and other loud items on movie sets.
I don't find the tap on the outside to be a fair comparison for viscoelastic layer. A rigid adhesive would be a better comparison, I think. Epoxy? The question I was left with after this video is whether a thicker cookie sheet is better than gluing layers to get the same thickness.
Is the heat that is dissipated enough to be captured with a thermal camera? That could be interesting to see how the heat dissipates and radiates away when struck, especially from multiple points.
They should stick disks of this stuff on the sides of the wheels of our rapid transit vehicles here in Boston -- would cut down on the squeal. Resilient wheels have been made going back into the 1800s, but this is newer technology.
That would be interesting to freeze the pan with the tape on and see the difference in pitch.
which app are you using to measure the noise?
Yes! Also here for the app
could definitely use this as a tape mod for my keyboard
Is it possible to stick this to the compressor of a refrigerator?
It'll help maybe only for the higher frequencies. I'd suggest a thick heavy wrap instead.
@@Qui-9Thick layers overheat the motor if completely wrapped. It is better to decouple the noise source itself on rubber pods or springs.
He has tape for everything.
Is there something equivalent for low frequencies? My central heating makes noise below 100Hz 😢
Pretty neat! Are all vibrations dampening tapes aluminum foiled? (I was looking for something in black) TKs
Wish my apartment wall had that. A few years back they switched us from electric to gas heat exchangers. While it did save a lot on heating (although long term electric heat exchangers would have been greener) they put all the exterior units right outside my bedroom wall. When they are running it's really annoying in the bedroom (and the living room is loud because the other end of the unit is there, although that's only loud when my apartment's unit is running, not everyone's.)
Edit- how does it do at other volume levels? Is it linear or logarithmic?
Drummers all understand this concept quite well. Doesn't require any kind of special tape. Just regular duct tape and some toilet paper
I was playing a kit with a really bright ride cymbal, and a couple of pieces of gaffer tape/duct tape on the underside really dropped the high frequencies - no paper needed, but I've only seen that on drums!
@@BarryRowlingsonBazThey also used to put old blankets inside a base drum. The 1st disco drumkits were muffled like this to reduce decay. Then 1970th drummachines were designed to imitate that disco sound. This is why they didn't sound at all like an (unmodified) acoustic drumkit.
Are you using Decibel X on your iphone? Thanks.
Even though it's obvious it works, I've never understood its value in car audio installations. Is it more for reducing road noise than for modifying the audio in any way? A tape or nat format seems to me like it would dampen only higher frequency resonance, which I typically don't notice in any vehicle, either from road noise or audio playback. Usually a quite thick foam rubber mat similar to carpet underlay is good for taming the interior down to lower frequencies.
It would do both. Road noise, unintended audio effects from the speakers moving parts of the frame and sound waste (interior volume lost because the sound is broadcast outside by body panels) are all worth attending to. I don't think YT orders comments reliably, but two down from here for me, @stereothrilla8374 explained it in more detail.
*So mounting tape and foil?*
Keyboard enthusiasts will be thrilled!
For those who are thinking 108 and 91 is not that much of a difference, decible is a logarithmic scale with base 10 means 10 db se 10 times louder than 9 and 100 times than 8 and so one .
I commented it because a friend sitting beside me thought same .
possible to use this to soundproof my room or musical instruments?
Would this work if applied to a window to lower the sounds from outside?
Thank you for sharing
Ok so you said with the tape or whatever it turns the energy to heat so I have one question and hoping for a video or something in response can you try to cook something using the same principle of turning the noise into heat
The drummer in me and his cymbals are happy for this. Good god, is it really $2,400 a roll?
I'd be interested to see how this compares to normal acoustic panels.
It's just double sided tape with Aluminium foil on one side like that conductive tape
I decided to search about this, and here you are posting a video about it 8 hours ago.😂
I hope 3m comes out with a wall sticker. I need it badly for my walls
Isn't this the same as bitumen mats? They are used since ages for washing machines, stainless steel sinks or in noise-blocking computer cases.