Sound does not ‘pass’ through a wall or ceiling but merely vibrates it. Sound waves are nothing but vibrations and when they strike a surface, they tend to vibrate it. ![]() The way sound behaves needs to be understood clearly here. Unfortunately, sound is not like a fluid that gets absorbed and trapped in something like a sponge. It is natural to assume that if products like foam absorb sound, there will be none that is left to escape the room. The misconception about foam being soundproof exists mostly because people lack the understanding of the differences between sound absorption and soundproofing. That is why ‘acoustic foam’ is for real and ‘soundproof foam’ is a myth. So, as an owner of a home studio and a site on soundproofing, I feel that I have a responsibility to put the facts out there and educate people so that they don’t waste their money on something totally useless as foam.įoam does not work effectively for soundproofing as it has insubstantial mass to BLOCK sound whereas it is highly capable of ABSORBING sound. It’s surprising to see so many websites and forums that profess that the cheapest and most effective material to soundproof anything, is foam. ![]() I’ve heard all of them mention the term ‘soundproof foam’ which blocks sound and I tell each and every one of them that there is no such thing. I have come across many people who really believe that foam is great for soundproofing spaces such as home recording studios and bedrooms. As an affiliate, I may collect a share of sales or other compensation from the links on this page.
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