CELP on Zyxel modems

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Article #1830

#1830

From: Kolja Waschk
Date: Mon, 23 Nov 1992 13:50

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Hello you out there in the world !

I really need help about the implementation of CELP used in Zyxel
modems. The only thing I know about it is that there are two TMS320C25
built in running at 40.16 MHz, and the "output data rate" is 9600 bps...
(not 4800 as in USFS 1016).
I want to write a program that is able to convert the CELP coded data
into an 8-bit linear (not mu-law or something like that !) representation
of the signal and vice versa (no, must not be realtime)...
Anybody who can help me ? Many people here are interested in this.

Thanks in advance - Kolja

(I'm also reachable in FidoNet as 2:241/2101.27, per snail mail via
 "Kolja Waschk, Oevelgoenne 23, W-2000 Hamburg 52, Germany" and last
but not least by a normal voice phone call : +49 -40 8804056 !)

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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!Germany.EU.net!rztsun!ap08.cip3a.tu-harburg.de!sdew92kw
From: sdew92kw@ap08.cip3a.tu-harburg.de (Kolja Waschk)
Newsgroups: comp.dsp
Subject: CELP on Zyxel modems
Keywords: CELP, ZYXEL, TMS320, COMPRESSION
Message-ID: <2049@rztsun.rz.tu-harburg.de>
Date: 23 Nov 92 13:50:07 GMT
Sender: usenet@rztsun.rz.tu-harburg.de
Reply-To: koljawk@zerebrm.isnet.sub.org (Kolja Waschk)
Organization: Techn. Uni. Hamburg-Harburg, Germany
Lines: 19