What Do You Want From Your Acoustic Foam? - www.AcousticFields.com

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- Learn more about room acoustics. Sign up for my private room acoustic training videos and ebook at www.acousticfields.com/free-ebook In this video, I pose the question as to what you should really want from your acoustic foam and why the absorption curve should be more important to you than anything else, regardless of what you have heard. After all, you want your vocals and live instruments to have the greatest connection with the listeners emotions, do you not? It is the mid range where all the emotional magic happens. Well, then surely over absorbing frequencies, that have this vitally important information, must not be done. However, it is done on a regular basis. We don't want to over absorb (destroy) energy in order to manage it in our smaller rooms. What's the point? There are better absorption curves to use and in this video we show you this so you can do your own thinking on what is most important to you.
For more room acoustic discussions please visit Dennis and the team at www.acousticfields.com

[@thec798]

Thank you for posting all these informative videos.

[@AdamDrumm]

+1 great info

[@djentlover]

I don't understand that energy price argument. I think it's a nonissue, when you think and compare the energy cost of bringing the volume up a little bit against all the money audio enthusiasts spend to their passion. It's confusing that you root for getting the room as inaudible as possible but then say that a product doesn't need to absorb all the frequencies.

[@AcousticFields]

D, If you have a mode at 80 dB SPL and you reduce amplitude to 70 dB SPL , you still have the mode and it is the same proportional ratio as the 80 dB SPL. You gain nothing and can't with this approach. It is not necessary to absorb at all frequencies in a room. There are simply too many variables to consider to make that claim. Absorption rates and levels must be balanced to address the issues within the room. We have two low-frequency technologies to provide those required rates and levels depending on room size/volume/usage. Our ACDA 12 goes after 30 - 50 Hz. with high rates of absorption. This high rate also impacts the harmonics through 350 Hz. The ACDA-10 is broadband from 30 - 100 Hz. with a 25% average absorption coefficient per octave. Using both rates and levels, applying each one in the correct modal pressure room area along with the required surface area of both, one is able to achieve a more natural and organic presentation that is not over absorbed and with minimum room sound.

[@djentlover]

I guess I was a little tired when I wrote this comment, of course one product can't handle all the frequencies at the same level and rate. There are crossoverpoints between products and I get that the crossover curves should be smooth. My apologies.

[@AcousticFields]

D, No worries. For years, the thinking has been to design products that absorb as much energy as possible within the smallest footprint. And for years, this thinking has lead to rooms that sound over absorbed. The same thinking set has been applied to drywall. I can hear a drywalled room the minute I walk into it. In the 150 + rooms we have built, we have taken a different approach. We just treat the issues that the room causes. Our goal is to get as much of the room out of the way as possible without infringing upon sound quality. Our first rule is to do no harm by adding other elements that are not music.