Path: utzoo!utgpu!attcan!uunet!tektronix!percival!qiclab!bigtex!james
From: james@bigtex.cactus.org (James Van Artsdalen)
Newsgroups: comp.dcom.modems
Subject: Re: DSP for V.32?
Message-ID: <10351@bigtex.cactus.org>
Date: 7 Nov 88 04:10:35 GMT
References: <1398@neoucom.UUCP> <23@jove.dec.com>
Reply-To: james@bigtex.cactus.org (James Van Artsdalen)
Organization: Institute of Applied Cosmology, Austin TX
Lines: 19

In <23@jove.dec.com>, vixie@decwrl.dec.com (Paul Vixie) wrote:

| [...], but at the SLIP BOF at Interop '88, Mike Ballard from Telebit
| said that the echo cancellation in V.32 was a very hard problem to
| solve digitally and that it looked like it was going to take two
| 32-bit DSP chips vs. the one 16-bit DSP chip they use today.  In
| addition to a 68020 or '030 instead of the '010 they use now.

A recent hire at my company used to work in the DSP group at Motorola
and claims that the NeXT DSP is indeed capable of V.32 with minimal
help.  oakhill!bryant, Motorola DSP manager, made the same claim in
comp.sys.next.  Future Moto DSPs are supposedly much more powerful
yet.  Since the DSP is a real uProcessor in its own right, it's not
difficult to see the DSP handling both the signal *and* the data link
to the host computer (at least when no compression is involved),
eliminating the need for a 680x0 class chip altogether.
-- 
James R. Van Artsdalen      james@bigtex.cactus.org      "Live Free or Die"
Home: 512-346-2444 Work: 338-8789       9505 Arboretum Blvd Austin TX 78759