From hpopov@stanford.edu Mon Jan 22 23:16:07 1996
Path: ashpoly!cascade!bigsur!stanford!hpopov
From: hpopov@stanford.edu (Hugo Popov)
Newsgroups: comp.sys.m68k
Subject: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Jan22.231607.8375@stanford.edu>
Date: Mon, 22 Jan 1996 23:16:07 GMT
Organization: Stanford University Computer Systems Lab
NNTP-Posting-Host: stanford.edu
X-Newsreader: Netscape 1.1N
Lines: 10

Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec.

The DSP56001 processes the 44.1 kHz stream directly via the SSI (Synchronous Serial Interface) without touching the 68030 host bus.
Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard.

Archive uploaded to ftp.lip6.fr:/pub/atari/Falcon/Music/stardust_falcon.zip.

-- 
Hugo Popov
Tape trading list upon request. SASE required for international mail.

From tsato@stanford.edu Wed Jan 24 16:58:07 1996
Path: ashpoly!cascade!brgate!saturno!stanford!tsato
From: tsato@stanford.edu (Tobias Sato)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Jan24.165807.3248@stanford.edu>
Date: Wed, 24 Jan 1996 16:58:07 GMT
References: <1996Jan22.231607.8375@stanford.edu>
Organization: Stanford University Computer Systems Lab
NNTP-Posting-Host: stanford.edu
X-Newsreader: Netscape 1.1N
Lines: 9

In article <1996Jan22.231607.8375@stanford.edu>, hpopov@stanford.edu (Hugo Popov) writes:
> Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec.
> The DSP56001 processes the 44.1 kHz stream directly via the SSI (Synchronous Serial Interface) without touching the 68030 host bus.

I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'.

-- 
Tobias Sato -- Stanford University Computer Systems Lab
"In theory there is no difference between theory and practice."