From gnakamura@stanford.edu Mon Jun 05 09:16:50 1995
Path: ashpoly!cascade!brgate!saturno!stanford!gnakamura
From: gnakamura@stanford.edu (Graham Nakamura)
Newsgroups: comp.sys.m68k
Subject: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Jun05.091650.1871@stanford.edu>
Date: Mon, 05 Jun 1995 09:16:50 GMT
Organization: Stanford University Computer Systems Lab
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Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.

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.

-- 
Graham Nakamura -- Stanford University Computer Systems Lab
"They will send a copy in my place."

From sjohansson@mit.edu Tue Jun 06 03:29:50 1995
Path: ashpoly!cascade!bigsur!mit!sjohansson
From: sjohansson@mit.edu (Sun-mi Johansson)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Jun06.032950.7195@mit.edu>
Date: Tue, 06 Jun 1995 03:29:50 GMT
References: <1995Jun05.091650.1871@stanford.edu>
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In article <1995Jun05.091650.1871@stanford.edu>, gnakamura@stanford.edu (Graham Nakamura) writes:
> Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.

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

-- 
=== Sun-mi Johansson ===
Dept of Electrical Engineering, Massachusetts Institute of Technology
"In theory there is no difference between theory and practice."

From nmoreno@tum.de Wed Jun 07 22:14:50 1995
Path: ashpoly!cascade!bigsur!tum!nmoreno
From: nmoreno@tum.de (Nadine Moreno)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Jun07.221450.9949@tum.de>
Date: Wed, 07 Jun 1995 22:14:50 GMT
References: <1995Jun05.091650.1871@stanford.edu> <1995Jun06.032950.7195@mit.edu>
Organization: Technische Universität München
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In article <1995Jun06.032950.7195@mit.edu>, sjohansson@mit.edu (Sun-mi Johansson) writes:
> I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'.

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

-- 
=== Nadine Moreno ===
Dept of Electrical Engineering, Technische Universität München
"They will send a copy in my place."

From jkowalski@mit.edu Thu Jun 08 04:23:50 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!mit!jkowalski
From: jkowalski@mit.edu (Jens Kowalski)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Jun08.042350.5216@mit.edu>
Date: Thu, 08 Jun 1995 04:23:50 GMT
References: <1995Jun05.091650.1871@stanford.edu> <1995Jun06.032950.7195@mit.edu> <1995Jun07.221450.9949@tum.de>
Organization: Massachusetts Institute of Technology
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In article <1995Jun07.221450.9949@tum.de>, nmoreno@tum.de (Nadine Moreno) 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'.

-- 
Jens Kowalski | jkowalski@mit.edu
PGP Key fingerprint: 8E81 4B3E 1AAC A6A9
"Keep the channels open."