On Tue, Mar 22, 2005 at 12:25:41AM -0500, Spencer Russell wrote:

On Tue, Mar 22, 2005 at 08:33:33AM +0800, Chris McCormick wrote:

...

Perhaps I'm smoking crack, but I seem to remember from the music-dsp list that you can just drop the pitch of the input sound a few Hertz to get rid of feedback. In a digital system this is easily accomplished by lowering the sample rate slightly right after sampling.

So if the performer whistled into the microphone at 440Hz, the sound coming out of the speaker would be at something like 435Hz? That'd make it mighty hard to sing/play in tune, because everything you did would sound flat. Also, if the output is slower then the input, you'll end up with a gradually lengthening delay effect(which could be kinda cool, but probably not what most people are looking for). Maybe I'm misunderstanding what you're saying.

Yeah you're totally right. Maybe it was just for use in a public address type of situation. Or maybe I was REM dreaming when I heard/read it. Apologies for the confusion!

Best,

Chris.

chris@mccormick.cx http://mccormick.cx