S> Hi, Is there any software that can create a negative of the S> sound? I'm thinking of taking an arbitrary frequency bandwith, S> pick a center and invert it, so that bass becomes high, and high S> becomes bass? This is a standard phase-vocoder trick. You'll find examples showing this in many common dsp-packages, eg. CLM, SC3, Csound etc. Cheers, -anders _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user