On Fri, Feb 24, 2012 at 10:12 AM, Joan Quintana <joan_quintana@yahoo.com> wrote:

This is more interesting and not simple like the previous. A part of playing back the file, it permits frequency shifting and frequency sweeping in a range between .5 and 2.

I presume by "frequency shifting & frequency sweeping" you mean resampling the signal & playing it back, not true "pitch shift" with time remaining constant..?

I'd like to see a simple example of eg: phase vocoder doing variable rate pitch shifting / time stretching...
Perhaps you've just provided that...? :) -Harry