BIG FAN . . . .I started watching 6 months ago Dennis now 12-16-20. fascinated by all of it. Using Patients and applying your methods I put up what I could afford. Pics tomorrow and send and join the chat after. Can NOT tell you "but" you have saved my arse & money.
Dennis, I think that since foam is absorbing mostly in the 125hz on up, they are probably hearing the harmonics of a bass note being absorbed, and not the fundamental note. Maybe that's why they THINK that foam can be used for low frequency absorption.
Yeah, I know, I just watched some videos of someone putting those acoustic foam in the corner acting like they are "bass traps" and he mentions he hears a difference. He showed no actual measurements to prove they did anything with low frequency absorption. I'm just trying to figure out what would make it "sound different' and that's the only thing I could come up with. They aren't listening to the low frequencies, they are just noticing a difference in the harmonics of the low frequencies since the harmonics would be 125hz and up range. So they aren't fixing the problem, per se. :-)
Oneness100 With a sine tone generator, it's so damn easy to find the modes of one's room. My room has a somewhat nasty resonance at 72 Hz, and at 36 Hz (half). If I decide to treat it with basstrapping, I'd verify that it worked, using the same method I used to diagnose the problems/frequencies - i.e. a tone generator and my ears. It's shocking how many people treat their rooms like blindfolded and with ears plugged. You see comments like "I think it's making a difference." Incredibly dumb.
Tazmanian Ninja I'm aware of how to find room modes, I was referring to how other people talk about that either don't know how to find them that user their hearing that use less effective methods for going after the lower fundementals.
Oneness100 I know 😺 I wasn’t directing it at you specifically. Just the fact that many people seem to “guess their acoustics” which is the wrong way to go about it. One needs to know which problems there are, and then fix them, in a prioritized, clever manner. I.e. don’t create a new problem, by muffling all treble, in an attempt to trap some bass frequencies that might even not be reached. That would leave one problem unsolved (bass) AND create a new one (100% dead, attenuated treble). In that scenario, trapping the specific problematic bass frequencies, in a way that diffuses treble, makes more sense.
K, The rate and level of absorption are critical for middle range frequencies. Building insulation lacks the proper rates and levels that is why middle frequencies sound so lifeless when insulation is used.
Thank you. I have been asked to make a portable box for a voice actor and was told that closed cell foam would be the best lining, but now I guess I should use open cell? What thickness would be best? I'd appreciate any advice you can give.
No, our foam is just the raw foam. You can mount it to a wall using Alien Tape. www.tryalientape.com. If you need a more formal look and mounting system, you can try our Foam Frame Panels www.acousticfields.com/product/foam-frame-panel/
T, The thicker the foam the lower the frequency of absorption. The middle and highs stay the same as specified. Our 2" foam goes to 125 Hz. If we make it 4" thick, It goes down to 95 - 100 Hz.
F, Rectangular rooms are more predictable in their unwanted modal issues. With a rectangular room, you know where the areas of treatment need to be. An ellipse shape would compound those issues and make a successful outcome problematic.
A, You need air movement across open cells to produce friction and then absorption. Closed cell does not allow for air flow getting into the cells, thus the name closed cell
Thanks foam man
what u doin heeeeeeeeeere
well this is pretty random
Great short seminar. always busting myths!
BIG FAN . . . .I started watching 6 months ago Dennis now 12-16-20. fascinated by all of it. Using Patients and applying your methods I put up what I could afford. Pics tomorrow and send and join the chat after. Can NOT tell you "but" you have saved my arse & money.
Thank you for your kind words.
Listen to this man!
I've started replacing another popular brand of acoustic foamwith Dennis's product and the difference is clearly audible.
B, Our foam took 8 years and 2M to create. It was designed for music and voice, not noise like most other foams in the marketplace.
Thank you. As a layman to absorption materials and sound treatment this was a very helpful video.
D, You are welcome. If you have any ideas for topics to cover, let me know: info@acousticfields.com
Thanks for the detailed lesson
its just what I'm looking for
That is a very informative video. Thank you for putting it together.
Great info and presentation, Very helpful! Thanks!
Glad you enjoyed it!
very good and simply explained, easy thumbs up and thanks a lot for the education!
J, Thank you.
Awesome, that was exactly what i was looking for
Dennis, I think that since foam is absorbing mostly in the 125hz on up, they are probably hearing the harmonics of a bass note being absorbed, and not the fundamental note. Maybe that's why they THINK that foam can be used for low frequency absorption.
Hi O, Whatever the thinking process that is used, it is incorrect.
Yeah, I know, I just watched some videos of someone putting those acoustic foam in the corner acting like they are "bass traps" and he mentions he hears a difference. He showed no actual measurements to prove they did anything with low frequency absorption. I'm just trying to figure out what would make it "sound different' and that's the only thing I could come up with. They aren't listening to the low frequencies, they are just noticing a difference in the harmonics of the low frequencies since the harmonics would be 125hz and up range. So they aren't fixing the problem, per se. :-)
Oneness100 With a sine tone generator, it's so damn easy to find the modes of one's room. My room has a somewhat nasty resonance at 72 Hz, and at 36 Hz (half). If I decide to treat it with basstrapping, I'd verify that it worked, using the same method I used to diagnose the problems/frequencies - i.e. a tone generator and my ears.
It's shocking how many people treat their rooms like blindfolded and with ears plugged. You see comments like "I think it's making a difference." Incredibly dumb.
Tazmanian Ninja I'm aware of how to find room modes, I was referring to how other people talk about that either don't know how to find them that user their hearing that use less effective methods for going after the lower fundementals.
Oneness100 I know 😺 I wasn’t directing it at you specifically. Just the fact that many people seem to “guess their acoustics” which is the wrong way to go about it.
One needs to know which problems there are, and then fix them, in a prioritized, clever manner. I.e. don’t create a new problem, by muffling all treble, in an attempt to trap some bass frequencies that might even not be reached. That would leave one problem unsolved (bass) AND create a new one (100% dead, attenuated treble). In that scenario, trapping the specific problematic bass frequencies, in a way that diffuses treble, makes more sense.
Thanks for the info!
J, Thank you for your support and following.
Pure science...this is exactly what I have been looking for.
K, The rate and level of absorption are critical for middle range frequencies. Building insulation lacks the proper rates and levels that is why middle frequencies sound so lifeless when insulation is used.
if you sing at a lower register, what foam would be the best if they don't really help anyhow?
Hi G, All absorption products have rates and levels of absorption. You must match the rate and level to the frequency response of the source.
This guy rules!!!
Thank you. I have been asked to make a portable box for a voice actor and was told that closed cell foam would be the best lining, but now I guess I should use open cell? What thickness would be best? I'd appreciate any advice you can give.
Open celled foam is the sound absorbing type. For male voice use our 2" thick Studio Pro Foam.
Where Can I buy it on the web?
J, www.acousticfields.com/product/acoustic-foam/
All of your foam comes with mounting hardware ?
No, our foam is just the raw foam. You can mount it to a wall using Alien Tape. www.tryalientape.com. If you need a more formal look and mounting system, you can try our Foam Frame Panels www.acousticfields.com/product/foam-frame-panel/
a blessing, thank u
You're very welcome
So work foam very well for vocals?
Yes, foam is a good middle and high frequency absorber. Here is a link to our Studio Pro Foam: www.acousticfields.com/product/acoustic-foam/
Does thicker foam manage low AND high frequencies?
T, The thicker the foam the lower the frequency of absorption. The middle and highs stay the same as specified. Our 2" foam goes to 125 Hz. If we make it 4" thick, It goes down to 95 - 100 Hz.
Is ellipse is a good shape for church design???
F, Rectangular rooms are more predictable in their unwanted modal issues. With a rectangular room, you know where the areas of treatment need to be. An ellipse shape would compound those issues and make a successful outcome problematic.
why closed foam not good to treat a studio?
A, You need air movement across open cells to produce friction and then absorption. Closed cell does not allow for air flow getting into the cells, thus the name closed cell
ET Foam Home
J, I do not know what you are asking.
it is a heart♡ fell on the side
Great short seminar. always busting myths!
Thanks foam dude
No problem 👍