The acoustic foam is for low mid-range to high, he recommended carbon technology to me for the low end but it's easy to set up a phone call with him and it don't cost nothing he's a really accommodating guy
Another great video Dennis, Didn't know these facts. Very interesting. Keep it up. What is the best type of foam for movies and video games? How do you know what size to cut them?
Would it be presumptuous to ask about your foam's density in kg/M^3 or lb/ft^3? Edit: for anyone else wondering, the measurements he gives below come out to roughly 30.76kg/M^3. Very clear the density of this foam is dialed in to extremely precise specifications. Likely the result of pursuing a uniform cell structure, which is very beneficial for absorption performance. From what I've seen, Auralex's foam is 32kg/M^3, but as the data shows, Auralex doesn't perform from 100-500hz. Likely the result of imprecise cell structure.
I have seen (and I’m sure I’m not alone) where in some commercial locations (like restaurants for one instance) where foam panels hung from the ceiling and I can’t see how that would offer any type of correction because of how it was placed, and also that it didn’t seem to be enough in size and number (and likely thick enough or the proper type) to really be of use to offer any type of correction. Pseudo Acoustic Panels more like it.
Why do you think panels hanging on the ceiling won't work? It's simple physics and the ceiling needs to be treated too - space between foam and walls make it more efficient
Every surface area contributes to 17 % of reverb time issue. You must reach a surface treatment level of 65% coverge of each wall to start. If that is not enough, then you will have to go to the ceiling as well. Every room is usage and size dependent.
@@AcousticFields and the particular place I was referring to had NO wall treatments, plain old brick walls, with a few small paintings (for sale) large thin glass picture windows along the entire front wall and 4 small thin foam rectangles maybe 2’ X 3’ hung from the wood rafters of the building about 4’ from the ceiling (which was a 12’ ceiling). These thin Foam panels (maybe 3/4” thick) did not look like they could serve any type of real acoustic treatment. 🤷🏻♂️
We are not about the real world. We are all about a completely different and very unique world where resolution of both gear, source, and room all work together to do something quite amazing. They will all disppear and it will be only us and the music.
Great video, thanks!
And happy father's day to all fathers out there.
Thank you!
Does doubling up the foam so it’s 2 layers increase the absorption coefficient of lower frequencies? Or allow the range of absorption to extend lower?
The acoustic foam is for low mid-range to high, he recommended carbon technology to me for the low end but it's easy to set up a phone call with him and it don't cost nothing he's a really accommodating guy
I think you increase the level of absorption if you do that, but not the rate of absorption. Dennis, please correct if I am wrong! Thx
It absorbs deeper frequencies but it really don't scale at the end - hence other technology for low frequencies
Yes, the foam depth determines the resonant frequency or how low it will start working at. At 4" depth, we go down to 100 hz. At 6" - 90 Hz.
Another great video Dennis, Didn't know these facts. Very interesting. Keep it up. What is the best type of foam for movies and video games? How do you know what size to cut them?
Out foam has thye smoothest absorption curve from
125 hz. - 500 hz.
Hi,
The question remains.
Who performed the AF foam test shown at 1:27
Thanks!
I believe Alion Labs years ago.
@@AcousticFields That sounds great. Please make their report available also. Thanks.
Do we need to install the frame around the foam or can we just put up the foam by itself on the wall?
The frame is cosmetic only.
Would it be presumptuous to ask about your foam's density in kg/M^3 or lb/ft^3?
Edit: for anyone else wondering, the measurements he gives below come out to roughly 30.76kg/M^3. Very clear the density of this foam is dialed in to extremely precise specifications. Likely the result of pursuing a uniform cell structure, which is very beneficial for absorption performance. From what I've seen, Auralex's foam is 32kg/M^3, but as the data shows, Auralex doesn't perform from 100-500hz. Likely the result of imprecise cell structure.
Our 18" x 2" x 25" piece weighs 1 lb.
@@AcousticFields Thanks! I appreciate your videos immensely!
Always the best videos!
Glad you like them!
thank you
You're welcome
I have seen (and I’m sure I’m not alone) where in some commercial locations (like restaurants for one instance) where foam panels hung from the ceiling and I can’t see how that would offer any type of correction because of how it was placed, and also that it didn’t seem to be enough in size and number (and likely thick enough or the proper type) to really be of use to offer any type of correction. Pseudo Acoustic Panels more like it.
Yes haha, or thin carpet on a wall
Why do you think panels hanging on the ceiling won't work? It's simple physics and the ceiling needs to be treated too - space between foam and walls make it more efficient
Every wall surface area in small rooms exhibits a different frequency and amplitude issue. You must design for all of those variables.
Every surface area contributes to 17 % of reverb time issue. You must reach a surface treatment level of 65% coverge of each wall to start. If that is not enough, then you will have to go to the ceiling as well. Every room is usage and size dependent.
@@AcousticFields and the particular place I was referring to had NO wall treatments, plain old brick walls, with a few small paintings (for sale) large thin glass picture windows along the entire front wall and 4 small thin foam rectangles maybe 2’ X 3’ hung from the wood rafters of the building about 4’ from the ceiling (which was a 12’ ceiling). These thin
Foam panels (maybe 3/4” thick) did not look like they could serve any type of real acoustic treatment. 🤷🏻♂️
The world goes down and you stay bring us an input how to upgrade the room thx but,in the real world you leave us with ?
If the world really goes down I want to hear music as good as I can until it's gone
We are not about the real world. We are all about a completely different and very unique world where resolution of both gear, source, and room all work together to do something quite amazing. They will all disppear and it will be only us and the music.