[PD] microphone feedback canceling

[Derek Holzer]

You're on the right track. Most DSP feedback filters try to track the 
loudest sinusoidal frequency and then use a notch filter to reduce it. 
You could try something with [fiddle~], and make sure that the signals 
you want to pass remain below a certain threshold. Then everything above 
that could be checked by [fiddle~] which could drive the filter. But 
really, if you soundcheck things well and keep mic levels within reason, 
this kind of thing shouldn't be necessary. I used mics and PD for a few 
years live and never ran into this problem provided I had a soundcheck.

best,
d.

tim wrote:
> Hi,
> I'm planning to use a microphone on stage, with pd.
> With it comes the risk of unwanted feedback.
> Has anyone done a feedback canceling patch or seen a proven technique ?
> I don't know much about how this works in commercial devices (and if 
> they really work for that matter), but I suppose it's done by detecting 
> a frequency that peaks and apply a filter on that...


-- 
derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista
---Oblique Strategy # 161:
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