Systemic Development > Psycho-Acoustics
Active Acoustic Correction
bpape:
Yes - I supposed you could DIY it and having multiple units would likely work better.
Now, that said, just remember that while this may address frequency related aberrations, it does absolutely nothing to deal with decay time and other time domain related issues.
Bryan
miklorsmith:
But decreasing amplitude should decrease overall energy at those bands which would have the side effect of shortening decay times as a byproduct wouldn't it?
bpape:
At those bands - yes. On the other 98% of the spectrum - nada. So, we could knock down those 2 bands to be where we wanted them and have the rest of the subwoofer'ish range still muddying things up - taking well over a full second to get down into the noise floor. That's why broadband treatments as opposed to tightly targeted ones usually are the best choice.
You also have to remember that if you don't get the center frequency and Q EXACTLY correct, you can actually make the ringing worse at a frequency very close to where the actual problem is.
Don't get me wrong, something like this IMO is preferable to just pure EQ - it's just not an answer for everything nor a replacement for proper broadband treatment. It's another tool to be used in addition to.
Bryan
miklorsmith:
Ah - that makes sense.
richidoo:
It's good as a small adjustable helmholtz. That can be extremely important in some cases with a big resonance at a certain freq, and no space, desire or budget to build a large enough resonator to kill it. But not not an acoustic cure-all. It will be interesting to see more active developments like this in the future.
My neighbor was telling me about these Bose active headphones he got. He can mow the lawn and listen to tunes. He was on an airplane ride with an obnoxious screaming brat that other adults were yelling from rear seats to shut up but it wouldn't - but he never knew about it. He was embarrassed to tell me how much they cost ($300), but I told him it was OK, I understand..... I didn't tell him that I have $500 earbuds and still want even better ones. :rofl:
How bout a 4x8 sheet of active membrane mounted to wall/ceiling, individual acoustic "pixels" react to pressure sensors on the surface according to software. Dial your whole ROOM for stadium, club, anechoic acoustic simulation. Dial 300 - 1500ms decay, or EQ whatever decay you want at frequency to compensate for furnishings. Bryan, you got something like that at SSS? ;)
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version