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Re: Compressed/Encrypted Voice using Modems
Beyond the ultraworld of Jim Thompson:
>
>
> > From: Peter Shipley <[email protected]>
>
> > at Interopt I heard some voice demos that were at 9600 4800 and 2400 baud
> > the 2400 sounded a phoneme chip but was *very* resionable.
>
> Quite likely what you heard were 9600/4800/2400bps (bits per second),
> not baud. The two are different. 2400bps compression of voice is
> quite a bit beyond current GP CPUs.
Well, almost true. 9600 baud !=9600 bps in modems. 9600 bps modems are actually
2400 token per seconds, with each token beeing 4 bit long. 2400 bps modems
are also 2400 bauds (token per seconds) like the 9600 bps modems, but with each
token beeing 1 bit.
> Also, note that 9600 baud (V.32 carriers) are based on a 2400bps carrier.
No, it's the inverse 9600 bps are based on 2400 baud.
> (And if they're not, I'm sure someone will correct me.) 2400 baud modems
> are based a bit rate something less than 2400bps, though I can't remember
> exactly what it is right now.
No, a 2400 bps modem is 2400 baud because each token is 1 bit long.
Ciao,
--
Francois Dion
' _ _ _
CISM (_) (_) _) FM Montreal , Canada Email: [email protected]
(_) / . _) 10000 Watts Telephone no: (514) 343-7511
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