How to Make High Performance Sound Absorption Panels for $5

  • Опубликовано: 8 авг 2016
  • In this video I explore the possibility of making DIY sound absorption panels on a budget, later comparing them to much more expensive acoustic foam. The results are pretty amazing!
    There have been many comments pointing out that my test only measures transmission and not reflection, so is essentially unsuitable for my initial testing goal. While this is partly true, testing reflection is pretty difficult to do in a home environment, and the only way to do it that I can think of would be to spend a long time in the middle of a field with a powerful speaker and mic rig, which is really beyond the scope of what I was prepared to do for the video.
    My tests are not rendered pointless however - it would do no good to have only measured reflection, as the thinnest lightest material would have won (like foam), as nothing would have bounced back. Reflection and transmission need to be tested together to measure how much sound passes through, and how much sound is reflected back - this should give an indication of how much sound is absorbed by a given material.
    Regardless, only testing the transmission doesn't affect the outcome of the project at all, as any sound waves reflected by the panels themselves would have theoretically bounced off the wall anyway - again this is why reflection wasn't tested, as it doesn't matter so much for a panel setup (though would matter very much for a vocal booth).
    Open to hear any thoughts about it though! Keep up the great discussion. :)
  • Хобби и стильХобби и стиль
  • Длительность: 8:38
  • diy  project  sound  absorption  panel  acoustic  foam  sound proof  echo  reverb  reduction  treatment  music  home  studio  make  

Комментарии: 2 997

  • Daniel Kostine
    Daniel Kostine Час назад

    Haha awesome

  • j-Tech
    j-Tech 15 часов назад

    Dang. Never thought of this. U are a mad genius. Now as far as you coming up with ideas on how to make things like electronics and gadgets and what not, if u don't mind me asking, do you have experience with work associated with what u do? Did u at one point study this? College?

  • Chris Bishop
    Chris Bishop День назад

    Excellent and practical ... Thank you 👍

  • Hellster Tech
    Hellster Tech День назад

    Can you show how to make headphone amp or dac

  • Rob Young
    Rob Young 3 дня назад

    CAUTION: one of the things that makes the Sound Absorption Panels so Expensive is their FIRE RATING, because u do NOT know the source of your material it CanNOT be rated : )

  • Anom Amos
    Anom Amos 3 дня назад

    Beware don’t use damp towels! Even just slightly damp towels can either catch fire or become mould havens.
    Dry them completely and spray them with furniture protector before use. You can also use silicone sealer to glue the towels to the frame and a blob or two to glue them to each other.
    You don’t need a frame either just hang them over a curtain rail. Don’t pack them tightly it’s the gap between layers that does half the job.

  • MannyMakinGifs
    MannyMakinGifs 4 дня назад

    Anyone selling these?

  • Melvin Jansen
    Melvin Jansen 4 дня назад

    Well done towel

  • truthseekers666
    truthseekers666 4 дня назад

    Have you tried a hoover. Will suck out loads of air and sound? Hehe... anyhow great video, very revealling indeed and yeah real sound panels usually are much bigger and cost thousands so a top find m8.

  • Majid Zia
    Majid Zia 4 дня назад

    Great share indeed! stay blessed.

  • Carl Wells
    Carl Wells 4 дня назад

    Cool! I will probe rely be looking into sound proofing for a small studio apartment- use case so I can watch movies / listen to music / play games without bugging the neighbors! Not sure how this would scale up though. Also the low frequencies are the toughest ones.
    I used to put foam behind cardboard movie stands that I used to get working at a video store. I used them to cut down on 1st and 2nd order reflections in my bedroom/home theatre room. They did a great job and looked great too!

  • D A
    D A 5 дней назад

    HI, have you ever tried to check the noise level on a floor mat? One side is kind of 1/4 inch rubber and the other side is just like towels but little harder than towel.Thank you

  • Chuck Lambeth
    Chuck Lambeth 5 дней назад

    I'm just getting started with my Voice Over career and your video is the first to actually give me proof that these acoustic panels (towel version) work best. Thanks very much!!!

  • CORRIGEEN71
    CORRIGEEN71 5 дней назад

    Would they work for sound proofing?

  • ramki audiophile
    ramki audiophile 5 дней назад

    Is the test right? Towel could be better at blocking the sound. Should we try testing in a room by turning the speaker against a wall/towel/cushion etc and then measure the reverb

  • andocrates
    andocrates 5 дней назад

    Great experiment. However anyone who is actualy reading this because you need sound panels.
    OWENS CORNING 703 RIGID FIBERGLASS ACOUSTIC INSULATION - 4'X2' PANELS 1" THICK 6PK
    The goal of acoustic foam is NOT to act as a sound barrier, that is done with vapor barriers and 8 inches of fiberglass insulation in the walls. You don't want the room to be dead, like singing in a closet. You just don;t want early reflections. Still you found what you needed and did it, that's good.

  • Maltfalc
    Maltfalc 6 дней назад

    just hang some thick heavy rugs on your walls with a bit of a gap behind them, or floor to ceiling shag carpet.

  • Richard Ogima
    Richard Ogima 6 дней назад

    Okay so I will start collecting thousands of towels and then surround my singing area with them - but a few hundred towels is a lot of money

  • Axel K
    Axel K 7 дней назад

    that reminds me of my experience with the Bundeswehr / German army
    3 felt duvets hung with 1 meter spacing each are bulletproof against 7.62 NATO ammunition
    if they are wet even against ammunition up to 23mm from the russians. you have to think about it ,
    7.62 NATO comes through 60 cm wet / living wood.
    a reason why I always laugh when in a movie the hero gets behind 10 cm plywood safely without getting hit.
    P.S. By the way, in my old days, you had to be once on the receiveing end in the shooting practice to learn how it sounds
    so no wonder, towels are the best choice ;))))))))

  • Urbino237
    Urbino237 7 дней назад

    Great job! Well done...I wonder what a recording engineer would think of your efforts?

  • bm music
    bm music 8 дней назад

    this is really good video....never thought of it...

  • Simon Smith Vapes
    Simon Smith Vapes 9 дней назад

    The idea isn't to absorb sound but defuse it, you need angles lots of angles.

  • Gingerly
    Gingerly 9 дней назад

    what is a spoonge?

  • Nathan Kilcourse
    Nathan Kilcourse 9 дней назад

    What are the dimensions of the panels?

  • HONG KONG FOOEY
    HONG KONG FOOEY 9 дней назад

    why didnt you make the frame the same size as the towels so you dont have to waste time trimming

  • anish creations
    anish creations 10 дней назад

    good

  • DeadDen HelloMoto
    DeadDen HelloMoto 10 дней назад

    dude drink some water or apply de-esser to your sound. can't listen to lips smacking and background cracking

  • Jogja Musically
    Jogja Musically 10 дней назад

    great job brother....

  • jaakko200987654321
    jaakko200987654321 10 дней назад

    so... i have a 7000w sound system and i want to make a "soundproofed" room in my new house. would this be ok for this purpose? at the old house it wasnt a problem because we had a "standalone" house and there wasnt any neighbors near the house

  • ZeroX Al-Attas
    ZeroX Al-Attas 10 дней назад

    you deserve a medal, sir!

  • Joshua Jones
    Joshua Jones 11 дней назад

    Thanks sir. Jesus bless you!

  • Balan Bogdan
    Balan Bogdan 11 дней назад

    I was not expecting that panel on the wall is a sound absorption panel.

  • Tiffany Nina
    Tiffany Nina 11 дней назад

    lol. I understand the confusion and outrage over the test, yet, those towels aren't reflecting anything, essientially. Towels are great fibrous absorbers, so are curtains, and blankets.

  • Charles B
    Charles B 12 дней назад

    Lowest frequency tested is 5kHz? People should really be focussing on lower frequencies than this for fundamental room treatment.

  • matheson
    matheson 12 дней назад

    you should host Art Attack. bring it back man, you got this!

  • Salvatore Pisano
    Salvatore Pisano 12 дней назад

    Oh shit is that Theon Greyjoy? Haha good video bud

  • sunfish
    sunfish 12 дней назад

    good video and use of scientific method

  • El Jardin de los Libros Perdidos
    El Jardin de los Libros Perdidos 13 дней назад

    Very interesting!!!!

  • Arty Facts
    Arty Facts 13 дней назад

    Interesting experiment.
    Ironic that you have your monitors stuck in a corner though

  • we done goofed
    we done goofed 13 дней назад

    You put the foam on upside down do it wont work well

  • Mike T
    Mike T 13 дней назад

    Forget the panels, check out that dam back yard! Beautiful.

  • DasIllu
    DasIllu 13 дней назад

    Oh, so that is what charity shops are for. Silly me thought they are there to help poor people.

  • IT'S OVA GAMING
    IT'S OVA GAMING 13 дней назад

    This is an amazing idea
    I do wonder though as someone who would use this idea to record music if it would kill too much sound

  • Snow_OP
    Snow_OP 13 дней назад

    Can someone explain to me what the towels wouldn't be good for in simple terms? I'm very new to the audio industry, and it doesn't seem to sink in easily either.

  • Konchus Nando
    Konchus Nando 14 дней назад

    Wow... I can notice the difference through my phone speaker! Im convinced

  • Marcos Loureiro
    Marcos Loureiro 15 дней назад

    "hitchhiker's guide to the galaxy" is very right about towels

  • Catherine Edwards
    Catherine Edwards 16 дней назад

    This is a very helpful video. Got a question for you. What if I buy some cheap printed canvas art at one of the box stores and stuff the back with the layered towels, like you show in your video? Would the painted canvas on the front negate the sound absorption of the towels behind it? Thank you.

    • A O Smith
      A O Smith 12 дней назад

      i think if the painting was glossy oil it would reflect a tiny amount so not that good, but it was printed or watercolour then the sound would pass thru and then in the towles, I like the idea, and I think ill have a go.

  • Jeremy Carlton
    Jeremy Carlton 17 дней назад

    I wonder what happens if you paint them. I need some black sound panels

  • nytom4info
    nytom4info 18 дней назад

    1” ridged fiber glass covered with shamy suede... in home theatres... ;)

  • Net Alibaba
    Net Alibaba 18 дней назад

    brilliant as always!!!

  • Vivien Webber
    Vivien Webber 19 дней назад

    Hello, i was wondering about the effectiveness with polystyrene though as that was not part of the test?
    I am busy completing my venue and the current acoustic problem is rather bad with a bad echo and no ceilings - my building is in the style of industrial warehouse therefor i do not want drapes or ceilings and all steel frames are exposed. After many other snags and costly mistakes people made i am definitely looking at the toweling options however would like to know of polystyrene would also do the job.
    Thank you for a great vid

  • Grateful aya
    Grateful aya 19 дней назад

    where is Towelie? he is over there working by blocking sound and getting high

  • PinkPonyOfPrey
    PinkPonyOfPrey 19 дней назад

    "How to Make High Performance Sound Absorption Panels for $5" ... yeah, right!
    is this click baiting or what? It probably works, too, considering 1,168,308 views now ...

  • Mister Potato
    Mister Potato 20 дней назад

    My left ear loved this

  • ryan dunkl
    ryan dunkl 20 дней назад

    how much do the dampen sound?

  • Chello
    Chello 21 день назад

    Great video, but RIP headphone users like myself. those high frequencies destroyed my ears xD

  • Austin Lindsay
    Austin Lindsay 22 дня назад

    Don’t forget to bring a towel!

  • Rob D
    Rob D 22 дня назад

    I have a situation where I work in offices but right by our factory area where workers work on buses, so they have boom boxes that have to cover quite a large area, so they're loud. I get distracted by the light incoming sound, & I'm wondering if something like these would help in this situation. That is help against noise coming through the walls or door etc.

  • Alben Adelbai
    Alben Adelbai 22 дня назад

    I'll use some of my old cum rags for my acoustic panels but I'm afraid I'll be needing a lot of air fresheners to keep the odor in check...

  • Ron Khosla
    Ron Khosla 22 дня назад

    Thank you thank you thank you for this! 48 bath towels have completely changed my music!!!!! It really works!

  • eltouristoduo
    eltouristoduo 25 дней назад

    This vid is well done but ideas are amateur (but yes cotton is good). Absorbing and blocking are not the same thing btw. Polyester batting is probably the best for all considerations...since cotton gets a bit funky after a few years..if you've left cotton clothing in closet with rewashing for a couple years...kinda like that/stronger after several years. Noticeably, but not horrible. I know this from using recycled denim batting for several years. But, it is best performer and is easy/friendly to work with. You can make nice panels by using 2'x4' 'luan' board...is the thin wood covering for interior doors, is easy to find. Is about 1/8 thick or so. Anyway, just take 2" batting, either denim or polyester, and stretch cloth over it and snugly staple to the back of the luan. You can then lean these about against whatever, mount them on wall or on stands, could make bifold floor panels, etc. Fiberglass is a nightmare being very unfriendly to deal with etc, is a non-starter. I know from experience, made a few covering them with cloth..bad idea. Oddly, polyester batting seems to be at least fairly easy to get in some other countries, but not USA. Though I think you can order it of course. But yeah I will be trying to order some. Also, besides not being a stellar performer, studio foam disintegrates after several years and makes a giant mess, sticking to where its been and to floor it falls on. I will maybe be sharing a vid about that soon.

  • PROFESSA KAOS
    PROFESSA KAOS 26 дней назад

    Don't forget to bring a Towel.

  • DUSKO
    DUSKO 26 дней назад

    Holy moly this video is AWESOME.
    Thanks!

  • Manufactured Minds
    Manufactured Minds 28 дней назад

    m a n l i n e s s a c h i e v e d

  • GreatSmithanon
    GreatSmithanon 28 дней назад

    Anyone who says sewing isn't manly has never been an armorer.

  • 生 何
    生 何 28 дней назад

    How would you deal with these DIY things? after you make the video.

  • Jeffry Schmidt
    Jeffry Schmidt 28 дней назад

    Might aswell put walls on my walls

  • BenoRidez
    BenoRidez 29 дней назад

    Good to know

  • Bitripper
    Bitripper 29 дней назад

    the test is for blocking the sound not measuring the reflected sound.

  • Andy Mac Door
    Andy Mac Door Месяц назад +6

    Malheureusement les tests qu'il fait n'ont absolument aucun sens !!!
    1) il utilise une fréquence précise pour tester. Même s'il en fait plusieurs à des fréquences différentes, en l'occurence 13khz 15khz 17khz, cela est une vrai blague en vue du nombre de hz non testés. Entre 13khz et 15khz il y a quand même 2000 hertz non testés.
    2) Pour mesurer l'absorption du matériaux, il le place entre le haut parleur et le micro de mesure. Cela n'a aucun sens !!!! Si ce n'est de vérifier l'étanchéité acoustique du matériau.
    Imaginons qu'il test une plaque de métal, avec son test il aura l'impression que la plaque absorbe le plus, alors qu'en réalité la plaque et bien le matériau qui absorbera le moins.
    Pour faire au mieux, il faut tester le matériau dans son contexte.
    En gros, on met une mousse dans une pièce (une salle), on mesure la pièce avec la mousse et sans la mousse, on fait la différence et on a le résultat d'absorption.
    Bref sa vidéo est catastrophique....

    • Degage DeLa
      Degage DeLa 4 дня назад

      Ah merci, effectivement, j'ai pas pensé au problème (polution+santé), j'ai beaucoup de chemin à faire, heureusement que tu es là, car je viens de faire le rapprochement avec ton com et ta chaine, c'est balaise les infos/tutos, en détail et ça couvre presque tout, merci pour tout ce partage (en français s'vous plait :) je viens de m'abonner, bon courage !

    • Andy Mac Door
      Andy Mac Door 6 дней назад +2

      Oui effectivement pour les basses il y a plus efficace que cela, mais bien plus complexe à réaliser. Toutefois le principe est le bon, plus c'est épais, plus c'est efficace vers le bas du spectre, mais il faut bien accepter et reconnaitre que pour absorber des basses fréquence aux alentours de 50hz il faut environ 1 metre d'épaisseur... c'est dire... Cependant les panneaux en laine de roche ou de verre, auront un bien meilleur rapport qualité prix que des serviette de toilette. Mais, je te recommande vraiment de les recouvrir avec un tissu, pour ne pas répandre partout de la poussière, qui au passage n'est vraiment pas recommandé pour les bronches. Si tu veux vraiment avoir des panneaux nus sans tissu et bien plus sain pour les poumons, cherche des panneaux de chanvre, lin ou coton.
      Par exemple ici : https://www.leroymerlin.fr/v3/p/produits/6-panneaux-de-chanvre-lin-coton-1-25x0-6m-ep-100mm-biofib-e1500569171#&xtmc=panneau_chanvre&xtcr=2

    • Degage DeLa
      Degage DeLa 11 дней назад +1

      Ah oui merci je viens de voir (tombé sur RockWool) et j'ai lu dans les com d'un tuto que pour les basses, il suffit d'augmenter l'apaisseur (plus on rajoute des chouches, plus on descends dans les basse fréquences), j'imagine que ce n'est pas aussi simple et efficace que c'est dit mais bon ça semble être la meilleure solution fait maison. Merci je vais donc suivre tes conseils et je pense même me passer du recouvrement esthétique (cadre en bois, tissu...), ça sera donc : toile de roche nue sans rien, histoire de pouvoir les trimbaler où et quand je veux :)

    • Andy Mac Door
      Andy Mac Door 11 дней назад +2

      Degage DeLa des panneaux en laine de roche ou laine de verre recouvert du tissu le plus fin et moin cher possible sera presque tout aussi efficace que des mousses acoustiques pro. Cherche sur Google, panneau acoustique laine de verre ou de roche, tu trouveras 10 000 tutoriels sur le sujet, c'est absolument, sans aucune hésitation, le meilleur rapport qualité prix efficacité, pour ce que tu veux faire. Pour traiter les basses c'est beaucoup plus compliqué.. mais sera déjà bien pour les médiums et aigus.

    • Degage DeLa
      Degage DeLa 11 дней назад +1

      Ah non là pour un test poussé, je déclare forfait, j'ai juste testé l'enregistrement avec des serviettes comme il l'a fait et le résultat était satisfaisant pour ce que je veux faire (enregistrer du son avec le moins de réverbération possible).
      Mais là si je suis tes conseils, je ne dois pas me fier à cette expérience (serviettes) et revenir vers des panneaux pro ?

  • Timo mit Hut
    Timo mit Hut Месяц назад

    You saved me a lot of money THANKS!

  • Josue R
    Josue R Месяц назад

    Would something like this be good for live performance? Need one for the top of a drum shield.

  • The All-Seeing Eye
    The All-Seeing Eye Месяц назад +28

    how much sound does your dog absorb?

  • MidnightMarrow
    MidnightMarrow Месяц назад

    Density is key here. The towels are much more material rich compared to the foams. That said the foams that do truly dampen or even block sound are priced astronomically high for rather small amounts.

  • Guitarninjaruy
    Guitarninjaruy Месяц назад

    I wrapped my girlfriend in towels and it stopped the noise! Thank you so much DIY Perks

  • PhotoJoseph
    PhotoJoseph Месяц назад

    This may have been mentioned (certainly haven’t read all the comments), however one of the advantages/selling points of the Auralex panels is that they are fire retardant. In a commercial environment, it’s against firecode to hang something on the wall like the DIY towel solution. On the other hand, this is obviously a great home solution, but you do still want to be aware of the fire risk. I may build a bunch of portable version of these!

  • WamahLife
    WamahLife Месяц назад +1

    For the front, we could also use a stretched canvas picture with the towels inside.
    Good idea, my office is quite small and the reverb is obvious in recordings.

  • ADIL SIDDIQUI
    ADIL SIDDIQUI Месяц назад

    manliness achieved😂😂😂😂

  • Rebelle
    Rebelle Месяц назад

    So simple yet so elegant!

  • Kevin Stevens
    Kevin Stevens Месяц назад

    A popular aphorism is “The proof is in the pudding”. Your tests demonstrate this axiom. The panels do what they were intended to do, reduce sound reflections by stopping transmission thus helping to reduce the acoustical reverberations of the room. Other words by adsorbing the sound “transmission” you have reduced the “refraction” and thus the “reflection” of that sound. Your sound absorption panels are far more appealing than just hanging moving blankets on the wall. Rightly done indeed.

  • LordGryllwotth
    LordGryllwotth Месяц назад

    So. I guess they need some cleaning once in a while. How that can be accomplished?

  • Anthony Rose
    Anthony Rose Месяц назад

    I️ really like this idea. One change I️ might make is using a non-towel material to cover the front to give it a smoother texture and make all the panels easier to match aesthetically.

  • TubiCal
    TubiCal Месяц назад

    i´ve dealt with some studio high, mid and low frequency rage absorbers. The goal of these is to reflect the energy of certain frequencies again and again inside until their energy is, more or less, gone.
    Usualy they archieve this with open structured foam where the sound energy can get into and "get lost" in a sort of labyrinth.
    Of course the towels work, as their surface is a caotic structure and the soundwaves will get reflected in random angles and therefore get diffused and less "hearable" but they only work for rather high frequencies, if you also want to ged rid of mid and low frequencies, you would need to make the labyinth path longer and longer, until several meters for the lowest range, if you hear some "booming" in your room...that´s not an easy task to place some fridge sized things in the room corner(s) but that´s how absorbers work, they absorb ;)
    Anyway great video, and a good and cheap way to DIY acoustic absorbers for mid and specially high frequencies.

  • Nimbusalliance
    Nimbusalliance Месяц назад

    Hi Matt, I am a fan and enjoy watching your videos. I'm sure what I'm going to say has already been addressed, but here's my 2 pence worth: the purpose of acoustic foam is not to stop noise from being transmitted to another room, but rather to stop sound from being reflected back into the room sounding like the inside of a fish bowl. It does so by providing a multi-faceted, multi-layered surface so that sound waves lose their energy.

  • ecsciguy79
    ecsciguy79 Месяц назад

    5:36 - That's quilting, actually: sewing two or more layers of fabric together to make a thicker padded material.

  • kendia perkins
    kendia perkins Месяц назад

    Thanks for sharing! Best wishes!
    Check out my school bus conversion.
    www.youtube.com/watch?v=3FSSGb
    366 Ways to Keep Daily Appointments with God
    www.amazon.com/366-Ways-Keep-Daily-Appointments/dp/1522040587/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=&sr=

  • GibsonLesPaul2273
    GibsonLesPaul2273 Месяц назад

    You should leave a gap between the wall and material and more gaps between more layers used, it sounds like a waste of space but its significantly more effective, it allows the sound waves to bounce around a bit so more time for them to be absorbed.

  • iloveny22
    iloveny22 Месяц назад

    I'm gonna do this to block out THAT FUCKING TRAIN HORN OUTSIDE MY WINDOW...

  • Constant Throwing
    Constant Throwing Месяц назад

    Is it the sort of pointiness of the towels that makes them so good at absorbing sound? The actual texture means that sound will bounce off one point of fabric, into another, into another, and so on rather than bouncing a bit and then heading back out of the material, right?

  • Constant Throwing
    Constant Throwing Месяц назад

    Such a legit way to demonstrate this and try to get results to compare in some way!
    Well done, man.

  • Matthew Edward Hall
    Matthew Edward Hall Месяц назад

    Thank you for making this!

  • Strain Specific LTD.
    Strain Specific LTD. Месяц назад

    Don’t forget to bring a towel 🙃🙃

  • Bolivia The Band
    Bolivia The Band Месяц назад

    wow you are incredibly good looking holy shit

  • The BOX
    The BOX Месяц назад

    Sry man, nut your testing is crab. You only try sound blocking not absorbtion! A door would be the best absorber in your way of testing. Towels do not absorb a whole lot. I would be afraid that they just make the sound bounce off.

  • Hache
    Hache Месяц назад

    This is wrong in so many ways... (facepalm)

  • Hache
    Hache Месяц назад

    First of all, your sponges are probably closed pore materials. Second, with what did you perform your measurements and what method you used? Third, most problems in small to medium rooms are in the low frequency range due to room modes.
    Also regarding measuring transmission and reflection are both coupled. Sound propagation phenomena are: Transmission, Reflection, Absorption and diffraction. The three first are important here. You can have small transmission but no absorption because the material is reflecting sound. Therefore to test correctly the absorption of a material you need to measure the reverb time in a room previous to applying a certain surface of the absorbing material and the reverb time after. Thanks to the Sabine formula you can obtain the α of the material for 1/3 or 1 octave bands and establish the properties of the material. Everything else is little scientific and based on the perception that obviously, anything you change in your room will make it sound different in certain frequencies.

  • Curtis Keller
    Curtis Keller Месяц назад

    A good DIY solution to a common home or small office problem. Thanks for sharing.

  • Charge Cannons
    Charge Cannons Месяц назад

    what type of wood is that, what is the best type for this?

  • Ky Fisher
    Ky Fisher Месяц назад

    how dose it go against acoustic insulation? like rockwool?

  • ThomasGrillo
    ThomasGrillo Месяц назад

    Thanks for doing this. I wonder how this would perform for blocking barking dog noise through a window. Keep up the great works! :)