How Sound Works (In Rooms)

Acoustic Geometry shows how sound works in rooms using Nerf Disc guns, 1130 feet of fluorescent green string, and Moiré patterns, and a before-and-after example.

[@flakyolly]

Where do I get the wooden clapper that causes absorbers and diffusers to appear?

[@Squashball]

Lol

[@ShaniArshadMusic]

I want the one that causes them to disappear

[@AdamSpade]

Lowe's? :)

[@nikki-ed4jy]

Shani Arshad p

[@psychorr7]

such a troll :P

[@김교포]

This guy was way ahead of his time on KZbin. 7 years later, 2020 for God's sake. There still are no tutorials that can top this. Bring this guy back.

[@sermerlin1]

ya man i just built my 5.1 surround soon to be 5.1.2 and i needed this explanation to how improve my room acousics.

[@likeyouiam5996]

this is just a stupid commercial that pretends to be a science video

[@burakakpinar5739]

definitely :D

[@nathanempty]

@@likeyouiam5996 will you come to my next party?

[@eddy2561]

AMEN!

[@monkeyrobotsinc.9875]

i just leave a lot of junk lying around. works perfect.

[@sswiths5328]

Me too, and my bunk bed helps too. Lol

[@toro514]

This made my day 🤣

[@damronmacleod5838]

mum: what's all this junk? Me: You leave my acoustic treatment alone!

[@commentfreely5443]

the shower is the best place to sing, so i should move everything in my house in there. might get wet, though.

[@FriedEgg101]

Piles of shoes make great bass traps :)

[@davidcook6064]

A classic example of how to make a winning demonstrative video. Clear, concise and just the juice! Excellent.

[@Altscorpion]

The nerf gun demonstration totally helped me

[@JurassicTrance]

Just the juice! I’m gonna start saying that

[@laurabrown5568]

One of the Best Ideas of SoundProofing is "SoundProof Curtains" it actually Block outside Noise coming from Windows. Check Here: livesoundproof.com/best-soundproof-curtains/

[@faiblesse9739]

xqcL

[@maurwice]

Xqcl

[@EatMolly420]

Why is a simple video like this not the first video that shows up when I search?

[@only1aeon]

you tube algorithms £££

[@DavidAndrewsPEC]

Sod's law. Sod can sod off and take his sodding law with him. Definitely a great video.

[@dandonna3904]

base on Google's searching Algorithm software

[@kgatlw9134]

Because they want to keep you on the KZbin platform for as long as possible by making you go down the KZbin rabbit hole! You come on here for a quick 5-minute video about How Sound Works and 2 hours later you're on here watching videos of fighter jets breaking the sound barrier.

[@kohnfutner9637]

Instead it's the last video you find when you're not even searching for it. Welcome to WeShitKZbin.

[@velvetimpulse]

I've watched hours worth of "tutorials" on acoustics and sound proofing rooms, but nothing, NOTHING came even close to these 3:33 mins. I feel enlightened! Thank you!

[@dinodubroja7433]

There are people who just like to cut the crap out, and I love it

[@leeor4218]

This video is a superb demonstration of why and how a live band mix changes once the audience arrives, especially indoors.

[@GoodVibesOnly1914]

I even notice a huge difference with 2 or more people in my listening room. Its like all the bass dissapears. Or 1 person in my car

[@dontnukeluke]

Why is this just made in exactly the manner that every instructional video should be made in? Brilliant!

[@svenschukat2958]

Really one of the best viedeos i have seen for acustic treatment

[@Acousticgeometry]

Thank you!

[@MurphyArtPrints]

I was just about to say the same thing. Wish more video's on KZbin were like this for other topics.

[@TakunTakun]

Agreeded, first rate. Job well done.

[@ferethere]

For sure

[@rechen1895]

@@MurphyArtPrintscom

[@fad2679]

2:55 isn't a demonstration of how sound changes with absorption panels. It's actually him applauding himself for this incredible video.

[@mattb1568]

Omg why was the switching back and forth from the treated room to the untreated room so incomprehensibly satisfying?! I could honestly watch that all day long lol

[@itoeats6328]

Well explained with clarity. I love the nerf gun example. It took me a while to understand after complicating me with golf ball theories when I studied room acoustics. Wish our teacher explained like this.

[@tracktaylor2783]

Nerf guns FTW!

[@AlexaGoldSoul]

As an artist with a home studio - This is an excellent example of room acoustics - I see why it’s so important and I appreciated the demonstration with the wooden clappers at the end - made all the difference in my understanding! ☺️

[@NoctumusTV]

Imagine an alternative KZbin where _all_ videos were this informative/useful!

[@hazardeur]

that's what I am fantasizing about in my dreams late at night, every night

[@letmesummarize1176]

They all are informative just some inform on the stupidity of mankind

[@Greenjah81]

Dig your nerf guns explanation. Totally perfect way to explain to an sound uneducated person. Well done.

[@MaghoxFr]

Awesome

[@ScooterFXRS]

Makes one wonder how long it took to get that angle right.

[@lineoneL1]

the visual aids used in this video are incredible. Even the square hole to show the waves does not bounce back is so simple yet hugely informative.

[@barleymob9913]

Extremely informative. I've learned as a musician how important room acoustics are for recording but it's insane to think about how much this science is actually applied by life on earth without the vast majority of life even considering why or how it's possible. Normally lifeforms process these noises without even thinking twice about them, but they even help us navigate the world around us. Blind humans that have learned the art of echolocation are a perfect example of this. I would never want to lose my eyesight or sense of touch, but losing my hearing would be even more devastating to me.

[@theopats2660]

When you can explain difficult things and make them easy , it means that you have really understand it. Well done

[@bjones0705]

This by far is one of the best videos about echoed sound ive seen thus far. . . Straight to the point with a long drawn out explanation. He even had examples.. i love it !

[@MrStatusqwo5]

That is not echos sound, but reflection of sound refers to the bouncing of sound waves off a surface. This can occur when sound waves encounter a solid object, such as a wall or floor. Echo is the repetition of sound that occurs after the original sound is produced. It happens when sound waves reflect off a surface and return to the listener.

[@chriskeentechnician]

Wow the wood clapper examples are fantastic! We (I work for an architectural company) talk to clients about this sort of thing, but to actually show them a comparison like this will be brilliant! Great video 👍

[@klick2destruct]

The difference between diffusors and no diffusors would've been also very interesting! Thanks for the great explanation!

[@mosemusica]

Amazing how just a few panels makes such a big difference in that room when he is clapping

[@sumanth3036]

Those red guys at the end are thrilling

[@vickymondal3358]

Overwhelmed by your Demonstration ♥️♥️♥️

[@infinitesmall]

I added this to my watch later 7 years ago, and now I'm going to do it again

[@Cristian-jh4iz]

Great video. Zero BS, concise, well informed, educational, and straight to the point.

[@jameswhiteley27]

This video is great, perfect example on how acoustic treatment works and how sound is transferred.

[@use0fweapons]

the A/B way of presenting the sound differences is PERFECT.

[@edward4670]

Wow! never seen a more simple explanation. Excellent video sir! I learned something today...Thumbs up

[@besym]

This is one of those videos which you feel you have to uptove after watching. Not because you liked it but it is common courtesy.

[@hom2fu]

when you listen to a speaker, you also listen to the room.

[@broor]

and the room in which they recorded the audio

[@Ninja_204]

@@broor roomception

[@laurabrown5568]

One of the Best Ideas of SoundProofing is "SoundProof Curtains" it actually Block outside Noise coming from Windows. Check Here: livesoundproof.com/best-soundproof-curtains/

[@letmesummarize1176]

Thats great way of looking at it

[@dskygn]

Clear, educative, simple. I wish all courses to be like this.

[@smollate1208]

Thank you I learned something new today. Ur like Bob Ross of music

[@laurabrown5568]

One of the Best Ideas of SoundProofing is "SoundProof Curtains" it actually Block outside Noise coming from Windows. Check Here: livesoundproof.com/best-soundproof-curtains/

[@jked7463]

Excellent visual representations. Of course this is only the most simplified of numerous acoustic issues to control. But what you show is the easiest to understand explanation I have ever seen.

[@oldestpunkinargentina7766]

Acoustics 101 for dummies; the simplest I've seen so far. Thanx !

[@thorenjohn]

A wonderful video - Thank you for that. One ironic thing came to mind with your final statement: "Your room will sound a lot more natural, but will look a lot stranger."

[@ericdavid96]

I love how everyone is like I finally understand this difficult concept because he explained it by shooting guns at a head.

[@computerjantje]

You must be American. Americans are known for seeing always the solution by using guns.

[@mhaleeyhontv614]

love the simple essence of your knowledge... gets the messege across with humbleness... respetcting the intelligence of the audience.. some of these videos take you step by step like we dummies... thumbs up...

[@irlrp]

In Eastern Eu it's super common to place carpets on the walls, it lowers the resonnance by a lot, and also makes it feel warmer

[@KKTRLZ]

I'd say it most definitely depends on the size of the recording area. I know people in bands that have told me to place carpet on the walls of my studio, but in my case that just wouldn't work. It's such a small room, that if I were to do that it would kill the sound almost completely, when all I really want to do is control it.

[@computerjantje]

@@KKTRLZ You are talking about a sound studio instead of a room to live in. Would it not be easier to make all walls absorb sound and then use microphones on different distances and after effects to get the perfect sound.

[@KKTRLZ]

@@computerjantje Well, there's only so much you can do post production if the recording itself is already either too flat, thin, boxy, distorted, etc. It's almost similar to video. You can't enhance resolution that isn't there. I'm speaking generally of the vocal recording area and not the setting of levels. I think it goes without saying that no amount of EQ'ing is going to fix a badly recorded vocal.

[@dudiek12]

I mean this guy illustrated it in so good way that you can actually show it to kids and they will understand, hats off

[@lukesuperflyjones]

Great, understandable, and quick to the point! THANKS for the test at end too!

[@Acousticgeometry]

Thank you!

[@josealfredfernandes]

@@Acousticgeometry or just use your equipment outdoors in open space.. it sounds a lot more better than super reflective walls.

[@rgb2296]

@@josealfredfernandes Acoustic is about sound in rooms.

[@IROCK80551]

This is what I figured after playing instruments for so long. Simply having a fan set to low messes with sound frequencies too. It's interesting how it causes them to sound. Thanks for the video!

[@frodev728]

Great video. It’s really nice to see someone do an A-B comparison that’s actually useful without having to fumble with youtube’s playback controls to try to repeat the different clips....

[@lothomillstone]

Hands down one of the best explanations I've ever seen.

[@alexandrspiridonov2054]

I have tried to understand it several times, but just with your video, I've finally got it. Thank you a lot))

[@filipivan5125]

The best before and after editing ive seen on youtube, wish everyone did this. Instant and direct comparisson with resulst u can compare without waiting several seconds for other clip to play !

[@harrycraic4501]

This is a great explanation and demonstration of how acoustics work in a room. The argument is explained in plain language and makes for an easy understanding of the topic. However, man I tripped out mad in tha last bit. Well done, cheers.

Best educational video ever, thanks!

[@Acousticgeometry]

Wow, high praise! Thank you! (We think so too!)

[@CodBlackOps2Shots]

Moisés Gómez i am agree with you!

[@mundoinvisivelxd1936]

Moisés Gómez doesn't sound too different .

Ckyntosh have you heard it with monitors? to me is easy to notice...

[@mundoinvisivelxd1936]

Moisés Gómez with monitor.

[@arisaris3484]

This is by far the best video demonstrating and clearest explanation I have ever heard about how accoustics work: Bravo ! ! !

[@Aero360Aviation]

Fascinating and informative! We are currently in the middle of recording at our home studio and trying to get our sounds right and this puts a wonderful visual on WHY things happen the way they do.

[@BHiemisch]

I watched this video almost 8 years after it was published and in that time I couldn't find a similar one that explained the problem as well as John Calder did. Great and helpful video, thanks and more of them please!

[@Ensource]

100% agree!!!

[@subbasslines]

Just wonderful, the way you explained it simple but yet complex

[@Mushting]

Beautifully executed. Extremely informative without the information being overly complicated. Thanks so much!

[@newsoundacoustics7973]

Beautiful and simple explanation! Thank you for the education!

[@hvifilms]

Best video ever, and it's 2023. Super informative; this helped me treat my room. Thanks!

[@PaulBissekerBushcraft]

I bought a sofa and some other furnishings and Presto! I now have absorber's

[@Don.Challenger]

Sadly the problem with that type of comfy absorber is it holds you on the couch and you no longer get to practice your bush craft.

[@minimoog4236]

Careful - or you will become a big absorber yourself.

[@TheMirolab]

Add some bookshelves, and there you have diffusion!!

[@PrendosNewZealandLimited]

Superb visual demonstrations. Much easier to understand the diffusion panel after this. Great video.

[@mrhoffame]

Those panels were beautiful! Wish this was an add for selling them.

[@Acousticgeometry]

mrhoffame You can find the Fabric-Wrapped Panels (bit.ly/agfabricpanel) and the Curves (bit.ly/agcurves) on our website for sale. Thanks for watching!

[@mrhoffame]

Acoustic Geometry Thank you!!

[@mrhoffame]

Acoustic Geometry Did you see my question on your other vid? I live in a loft and cannot play my system loud at all. I have a pair of Martin Logan Electro Stat speakers. I was wondering if panels make a significant different if you are playing at lower volumes as well?

[@Turruc]

Amazing video. Tops all the tutorials I've watched on the subject nearly a decade later.

[@6noteblues]

As a poor man's solution, I hung corduroy fabric on parts of the walls using small diameter wood poles, hooks and brackets - like wall tapestry hangings. It improved the sound immensely. Thanks for the great video.

[@ColtraneTaylor]

Pics? Uploaded to tiny pic maybe?

[@ronb7062]

after watching bunch of videos talking about sound waves and acoustics, this is the video that explains best. thank you!

[@vishnuhareesh281]

1:50 “how can we make our rooms sound better? remember these nerf guns?” *proceeds to threaten the wall to sound better*.

[@DigitalDonAV]

Great videos. As a professional A/V - Theater system designer, I use these to help explain how sound works with my clients.

[@AAvfx]

*Finally, I understand!! Thanks!* 👍

[@opethium647]

hmm checkmark

[@squirrel4207]

i love these explanations . takes such a seemingly difficult concept to Barny style .

[@mattiemaas]

brilliant video.

[@ryanwilson5936]

I like how in a video about sound, one can still learn with no sound at all. I watched this on mute and still came out of it with valuable information. Thanks!

[@PrinceWesterburg]

The best way to understand how sound moves is to tap a bucket of water. You get a splash where you tapped the bucket, then later at the other side and back. Thus, if you put your speakers 18" from the wall your head should be 18" from the rear wall for optimum bass - try it!

[@straingerr]

Prince Westerburg Hey! Mind further explaining that thing about having my head 18" from the rear wall? I didn't undertand what you meant by having the speakers 18" away from the wall. I mean, what wall? The one in front of the speakers or at the back of the speakers? Is the rear wall the one behind me/in front of the speakers?

[@michaeltownsly1493]

He's talking shit

[@Don.Challenger]

Anyway, another small matter is his "splash" is a "wave".

[@BoxerDogs]

This is explained very well. Unlike most people, I can tell you put a lot of thought, planning and effort into constructing this video and presenting it. Thank you for posting this.

[@EN4ORC3R]

This was an advert for nerf guns. I'm going to buy a nerf gun. Because I've been influenced by this advert. And I'm going to buy 2.

[@neilreid2298]

This is a brilliant presentation and explanation. Similar phenomena with RF but with much higher speeds and greater distances. Well done and thank you.

[@VeixxBeats]

Yoo I just ordered two of them red absorbers

[@thegoodgeneral]

How did they work out for you?

[@chefgiovanni]

Wow ! All that material ! Many people use solid rock maple butcher block counter slabs, see them here : chefdepot.net/butcherblock7.htm (Made in USA and Free Shipping)

[@Layarion]

or just put blankets on the walls.

[@thegoodgeneral]

@@Layarion blankets absorb high frequencies but not mid and low. You’ll just get a dead, boomy sound that way.

[@Layarion]

@@thegoodgeneral good to know

[@SlainByTheWire]

I didn't search for this, but I'm glad I watched it. Not just for the fact he used Nerf guns to explain sound, but while I knew about absorbing sound, I didn't know about diffusion. I learned something today, thanks man.

[@Internet_Rex]

I like this guy

[@xturk8611]

best freakin tutorial. simple to the point, and extremely easy to make sense of. let this guy run all things audio on KZbin.

[@marcosaruca5283]

what a good fucking video

[@IvanBoskovic808]

Watch your fucking language

[@klopss1304]

@@IvanBoskovic808 holy fuckin shit

[@sheerenergy8602]

@@klopss1304 3 years later and this "fucking" still bouncing, we need some fucking absorbers...

[@jackedkerouac4414]

I feel like this is my reward for watching hundreds of hours of acoustic treatment videos

[@poobla7638]

well that really helped me learn about how sound proofing works

[@NiCOMusic951]

+Isaac Acosta Another lesson for you... :) This is not sound proofing, it is acoustic treatment. The difference? Sound Proofing is the option to stop sound traveling through walls etc, so that you either block sounds that are outside the room from entering or you block sounds from leaving the room so others can't hear your music. Acoustic Treatment is the option to stop echo's/ reflections of sounds bouncing off the walls as you see in this video. This will not stop sound from entering or leaving the room... that is sound proofing's job. Hope this helped, like it so people who don't fully understand can read for themselves!

[@Don.Challenger]

Get a drum kit, violin or trumpet and start learning how sound making works.

[@andreasscholz4375]

Great explanation. Especially the final demonstration is just perfect! Thank you very much.

[@jwjohnson7909]

Who ironed his shirt? Love the partial ironing job ;-)

[@interamerichanic]

It's for left-channel sound diffusion. You can also get them for the right.

[@shubhshah]

This is such an amazing video. The explanation is so simplified and super easy to undertand. This is the best demonstration ever. great job!

[@MoeBee100]

Excellent video, Thank you.

[@jezzriqkeys1611]

Why this video doesn’t appear the first thing I search for..? The best explanation ever. Thank you!

[@AzureXPlay]

*Someone talking inside room Acoustic Geometry: *hmm feels physics*

[@Kobozo375]

The nerf disc guns are a genius analogy. Fantastic video!

[@BreadCasket]

The irony of this video having subtitles

[@stelioskritikakis]

2021 and this demonstration is incredible. A truly treasure in less than 4 min. I subscribed without a second thought.. Great great job!!!

[@housebrigade]

i only have 2 walls in my room

[@johnyang799]

housebrigade wtf？

[@Envinite]

Open space is not a room, bro.

[@markm0000]

Refugee camp needs their audiophile setup.

[@darkflamesquirrel]

+Envinite not with that attitude!

[@GTsTitanRanch]

My room only has one wall. For real.

[@DivineMisterAdVentures]

Apparently just ordinary overcrowded furnishings, curtains, and and carpeting works pretty good! Thanks for the tips! Mainly sound issues start with a big empty room - like the gymnasium effect. I am experiencing only a close and small surface reverb effect - there are no echoes. It's the same idea as air filtration - you can set up a small filter to catch the particles - it just takes longer if the filter surface area is smaller.

[@SWFLJetSkiRiders]

Awesome vid ever , God bless this señor.

[@robertdowler8105]

This is how drones work,too.

[@RichardsWorld]

Well, that was one hell of a demonstration there.

[@lydiakrifka-dobes3710]

Thanks for this video -Yours Truly (17 year old, future acoustics/Tonmeister student- hopefully)

[@MC-ew7sc]

Did you do it? Did you become a Tonmeister Student?

[@lydiakrifka-dobes3710]

@@MC-ew7sc I am now studying sonology in Den Haag

[@MC-ew7sc]

@@lydiakrifka-dobes3710 Got to be honest, wasn't really expecting a reply, but glad I got one. Congrats, you are on your way.

[@Tiznado]

simple, easy to follow and about 3 minutes? amazing!

[@trails3597]

So if I hear you right soft furniture, carpet and window treatment work just fine.

[@mikefearon3577]

Carpet, blankets, mattresses work well if you're on a budget

[@computerjantje]

Yep, you heard right

[@Okewen]

Excellent pedagogy in those disks. Thank you!

[@Mtaalas]

This is very simplistic take on the issue and doesn't really tell you how complicated it really is to make acoustic treatment. It takes time, knowledge and experimentation (and accurate measurement, not your subjective opinion) to do good acoustics. And it's way too easy to spend a huge amount of money on treatment that isn't effective or is wrong for the said room.

[@TheMirolab]

It's also very easy with a little money and ingenuity to make a big difference in a bad room. This video is good for a 3 minute intro to acoustics. Just putting up a few strategically placed absorbers can make a big improvement, but it takes a lot of expertise to make a 'reference' quality space. It depends on what your goal is.

[@100chuckjones]

I was watching this video thinking, wow this is great. Then I noticed my comment from 2 years ago lol. i totally forgot about watching this. Great job.

[@johncalder9188]

Deja vu all over again! (Yogi Berra)

[@alexbrown2815]

Best video on KZbin !

[@Acousticgeometry]

Thank you!

[@josephbrown363]

Great video, both narratively and physically.

[@davidphilipsmusic]

"Looks cool, sounds bad" - A comment on the state of modern music?