Compressed/Encrypted Voice using Modems

[Stephen D. Williams]

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> thug at phantom.com (Murdering Thug) writes:
> 
> >I don't know if CELP requires an error-free transmittion stream from
> >codec to codec.  If it doesn't then that's great, I hope it self-synchronizes
> >itself after a byte or two of garbage coming through. Big deal, so you hear
> >a click or pop of static, so what.. you get that with analog lines.
> 
> CELP resyncs.  Not sure how fast.  Maybe after a tenth of a second or so.
> 
> On a side note, we are finishing up an implementation of CELP on the
> TMS320C5x.  This is a 20 MIPS integer chip.  We are taking up less
> than 15 MIPS.  We also know how to write error corrected CELP (such
> that bits that cause more significant degradation are protected
> better).

Does everyone know that the new Zyxel's have CELP builtin?

Don't know details yet...

sdw