On Fri, 12 Sep 2008 14:44:22 -0400 drew Roberts <zotz@xxxxxxxxxxx> wrote: > On Friday 12 September 2008 13:38:48 Fons Adriaensen wrote: > > On Fri, Sep 12, 2008 at 12:21:43PM -0500, Reuben Martin wrote: > > > > Signals of different frequencies cam't ever cancel each other. > > > > > > No, but they can seriously mangle one another in an undesirable > > > manner. > > > > Mangle ? How ? > > Can't you just listen and see? (I don't know that I could. I may try a bit > later.) You seem to want theory while he seems to be giving hands on answers. > (I would like the theoretical answers myself, but they may not be on the way. > Have you done the practical side and still don't see what he is getting at?) > > > If the channel following the harmonic generator, > > i.e. after the exciter plugin, is linear then this can't happen. > > > > Ciao, > > all the best, > > drew I think the OP is referring to phase. Starting with sine waves, depending on which phase each harmonic is, as you add odd harmonics the resultant (for a given fundamental) can be made to move towards either a square wave, or a triangle wave. Whereas if you add even harmonics you move towards a sawtooth wave. To me, square and triangle waves sound identical at the same RMS amplitude. However, the triangle shape will overload an amplifier faster, and noticeably change in character, while a square wave hardly changes at all until you are into severe clipping. Obviously the situation is far more complex with 'real' sounds :) -- Will J Godfrey http://www.musically.me.uk _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
