aczlan wrote:Something like a feedback ferret?
I was reading about a
Sabine Feedback Exterminator {drool}
But then I talked to a sound guy and he claims that feedback controllers don't work - at the end of the day, the mic still hears the speaker.
I can see his point. Unless the room acoustics are highly resonant at a few frequencies, you're not going to get much additional gain out of using any feedback device - because there's another frequency just behind it.
Speaking of feedback controllers, I ran across a very old Altec anti-feedback device. Looking at it, I think what it did was modulate the audio into a Single-Sideband and then demodulate it. That would cause the frequency of all sounds to shift sightly. Thus the feedback couldn't reinforce itself.
That must have been interesting to listen to. When you pushed it to where it started getting echo-y, it must have gone up or down in frequency with each "ring". It must not have worked too well as Altec made very few of them. I think it goes back to what the sound guy was saying - the mic hears and speaker. No getting around that.
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