From clarsson@utexas.edu Mon Dec 25 01:00:23 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!utexas!clarsson
From: clarsson@utexas.edu (Callum Larsson)
Newsgroups: comp.sys.m68k
Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec25.010023.2452@utexas.edu>
Date: Mon, 25 Dec 1995 01:00:23 GMT
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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.
A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor.

Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation.

-- 
=== Callum Larsson ===
Dept of Electrical Engineering, University of Texas at Austin
"There are 14 nodes and only 10 countries. Count again."

From tchoi@delphi.com Mon Dec 25 15:48:23 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!delphi!tchoi
From: tchoi@delphi.com (Tobias Choi)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec25.154823.6235@delphi.com>
Date: Mon, 25 Dec 1995 15:48:23 GMT
References: <1995Dec25.010023.2452@utexas.edu>
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In article <1995Dec25.010023.2452@utexas.edu>, clarsson@utexas.edu (Callum Larsson) writes:
> Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec.

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

PGP Public key available via finger or upon request.

-- 
Tobias Choi
Tape trading list upon request. SASE required for international mail.

From fchoi@purdue.edu Tue Dec 26 01:52:23 1995
Path: ashpoly!cascade!bigsur!purdue!fchoi
From: fchoi@purdue.edu (Fiona Choi)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec26.015223.5099@purdue.edu>
Date: Tue, 26 Dec 1995 01:52:23 GMT
References: <1995Dec25.010023.2452@utexas.edu>
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In article <1995Dec25.010023.2452@utexas.edu>, clarsson@utexas.edu (Callum Larsson) writes:
> Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec.

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

-- 
Fiona Choi | fchoi@purdue.edu
PGP Key fingerprint: 151F 8BE8 0C7E 22F3
"Keep the channels open."