Compressed/Encrypted Voice using Modems

Miron Cuperman miron at extropia.wimsey.com
Wed Feb 10 12:53:21 PST 1993


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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).
- -- 
        Miron Cuperman <miron at extropia.wimsey.com> | NeXTmail/Mime ok
                       <miron at cs.sfu.ca>           | Public key avail
        AMIX: MCuperman                            |
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