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: "Trust in the you of now" _______________________________________________ PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list