Gerhard Fiedler <geraldo@NW.COM.BR> wrote:
> I think with CELP compression you get "near phone quality" at 9600 bit per
> second, but probably you need some "near DSP" algorithms to decompress it.

CELP needs very much DSP.  It ain't gonna work on a PIC.

> Voice modems use that type of compression.

All the voice modems I've worked with use ADPCM, which doesn't achieve as
low a bit rate, but also doesn't use as much DSP.

Eric