From freyes@tum.de Tue May 28 04:00:21 1996
Path: ashpoly!cascade!transat!sunet!nordrelay!tum!freyes
From: freyes@tum.de (Fiona Reyes)
Newsgroups: comp.sys.m68k
Subject: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996May28.040021.1220@tum.de>
Date: Tue, 28 May 1996 04:00:21 GMT
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Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.

The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise.
Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard.

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

-- 
Fiona Reyes | freyes@tum.de
PGP Key fingerprint: F246 AD53 90EE D834
"Keep the channels open."

From rlarsson@pipeline.com Thu May 30 00:25:21 1996
Path: ashpoly!cascade!brgate!saturno!pipeline!rlarsson
From: rlarsson@pipeline.com (Raj Larsson)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996May30.002521.7653@pipeline.com>
Date: Thu, 30 May 1996 00:25:21 GMT
References: <1996May28.040021.1220@tum.de>
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In article <1996May28.040021.1220@tum.de>, freyes@tum.de (Fiona Reyes) writes:
> Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.
> The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise.

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

-- 
Raj Larsson
Tape trading list upon request. SASE required for international mail.

From trodriguez@utexas.edu Fri May 31 23:36:21 1996
Path: ashpoly!cascade!bigsur!utexas!trodriguez
From: trodriguez@utexas.edu (Tobias Rodríguez)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996May31.233621.6677@utexas.edu>
Date: Fri, 31 May 1996 23:36:21 GMT
References: <1996May28.040021.1220@tum.de>
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In article <1996May28.040021.1220@tum.de>, freyes@tum.de (Fiona Reyes) writes:
> Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.
> The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise.

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

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

From ikarlsson@ox.ac.uk Sat Jun 01 13:53:21 1996
Path: ashpoly!cascade!bigsur!ox!ikarlsson
From: ikarlsson@ox.ac.uk (Ines Karlsson)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Jun01.135321.9038@ox.ac.uk>
Date: Sat, 01 Jun 1996 13:53:21 GMT
References: <1996May28.040021.1220@tum.de>
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In article <1996May28.040021.1220@tum.de>, freyes@tum.de (Fiona Reyes) writes:
> Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.

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

-- 
=== Ines Karlsson ===
Dept of Electrical Engineering, Oxford University Computing Laboratory
"Extraordinary claims require extraordinary spectra."