> sure - basically you want pitch-detection of the audio-input (and maybe > envelope/volume). Just getting a single pitch (base-freq) is not too hard. Thanks for the detailed answer, i think that's what I'm looking for, a "pitch follower" or "envelope follower". I already used puredata, I'll try what you said, and see if i can get something to work, if i encounter some problems I'll ask back, if there are more suggestions about other methods i'm listening, thanks again, bye Al _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user