On Sat, 22 Oct 2016 15:50:22 +0000 Fons Adriaensen <fons@xxxxxxxxxxxxxx> wrote: > On Sat, Oct 22, 2016 at 04:30:00PM +0200, Johannes Kroll wrote: > > [...] > > Because there isn't any that really works. > > The basic reason is that the combined response of speaker, room > and mic in a typical PA situation is very irregular with hundreds > if not thousands of very narrow peaks, and the frequency of those > peaks is very sensitive to small movements of almost everything. > > Simple tricks like adaptive notch filters will maybe give you a dB > or so extra, but there it ends. > > The only thing that can work sometimes is shifting all frequencies > up or down by a few Hz, smoothing out the peaks. Simple to implement, > usable for speech but usually not for music because it will appear > to be out of tune. That's a good hint, thanks. I could try the AM Pitch Shifter or Bode Pitch Shifter LADSPA plugins. That could be a good enough solution for me, if it doesn't change the sound too much. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
