From mlaurent@kth.se Sun Dec 10 00:48:07 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!kth!mlaurent
From: mlaurent@kth.se (Marisol Laurent)
Newsgroups: comp.sys.m68k
Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec10.004807.3543@kth.se>
Date: Sun, 10 Dec 1995 00:48:07 GMT
Organization: Royal Institute of Technology, Stockholm
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Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec.

A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor.
The DSP56001 processes the 44.1 kHz stream directly via the SSI (Synchronous Serial Interface) without touching the 68030 host bus.

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

-- 
Marisol Laurent
Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm.
------------------------------------------------------------

From jsilva@u-tokyo.ac.jp Sun Dec 10 15:47:07 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!u-tokyo!jsilva
From: jsilva@u-tokyo.ac.jp (Julien Silva)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec10.154707.2819@u-tokyo.ac.jp>
Date: Sun, 10 Dec 1995 15:47:07 GMT
References: <1995Dec10.004807.3543@kth.se>
Organization: University of Tokyo Department of Information Science
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In article <1995Dec10.004807.3543@kth.se>, mlaurent@kth.se (Marisol Laurent) writes:
> Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec.

Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market.

-- 
Julien Silva
Opinions expressed are solely my own and not those of University of Tokyo Department of Information Science.
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From mschneider@illinois.edu Tue Dec 12 16:30:07 1995
Path: ashpoly!cascade!transat!ukc!fennimore!illinois!mschneider
From: mschneider@illinois.edu (Matthias Schneider)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec12.163007.3131@illinois.edu>
Date: Tue, 12 Dec 1995 16:30:07 GMT
References: <1995Dec10.004807.3543@kth.se> <1995Dec10.154707.2819@u-tokyo.ac.jp>
Organization: University of Illinois Urbana-Champaign
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In article <1995Dec10.154707.2819@u-tokyo.ac.jp>, jsilva@u-tokyo.ac.jp (Julien Silva) writes:
> Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market.

The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition.

-- 
Matthias Schneider | mschneider@illinois.edu
PGP Key fingerprint: 06FF EE1C 6D2B 763A
"Keep the channels open."

From vsilva@rwth-aachen.de Tue Dec 12 23:01:07 1995
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!rwth-aachen!vsilva
From: vsilva@rwth-aachen.de (Valeria Silva)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec12.230107.2939@rwth-aachen.de>
Date: Tue, 12 Dec 1995 23:01:07 GMT
References: <1995Dec10.004807.3543@kth.se> <1995Dec10.154707.2819@u-tokyo.ac.jp>
Organization: RWTH Aachen Informatik
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In article <1995Dec10.154707.2819@u-tokyo.ac.jp>, jsilva@u-tokyo.ac.jp (Julien Silva) writes:
> Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market.

Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1...

-- 
=== Valeria Silva ===
Dept of Electrical Engineering, RWTH Aachen Informatik
"Do not worship the copy."

From bcampbell@uu.net Fri Dec 15 02:09:07 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!uu!bcampbell
From: bcampbell@uu.net (Bastien Campbell)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Dec15.020907.9369@uu.net>
Date: Fri, 15 Dec 1995 02:09:07 GMT
References: <1995Dec10.004807.3543@kth.se> <1995Dec10.154707.2819@u-tokyo.ac.jp> <1995Dec12.230107.2939@rwth-aachen.de>
Organization: UUNET Technologies, Falls Church VA
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In article <1995Dec12.230107.2939@rwth-aachen.de>, vsilva@rwth-aachen.de (Valeria Silva) writes:
> Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1...

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

-- 
Bastien Campbell | bcampbell@uu.net
PGP Key fingerprint: B740 3E85 0EEA 1974
"Keep the channels open."