From tperez@stanford.edu Sun Nov 03 13:57:22 1996
Path: ashpoly!cascade!brgate!saturno!stanford!tperez
From: tperez@stanford.edu (Thiago Pérez)
Newsgroups: comp.sys.m68k
Subject: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Nov03.135722.9971@stanford.edu>
Date: Sun, 03 Nov 1996 13:57:22 GMT
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The Atari Falcon is the ultimate machine for decoding Project Stardust audio.

Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard.
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.

-- 
Thiago Pérez
Tape trading list upon request. SASE required for international mail.

From atakahashi@titech.ac.jp Mon Nov 04 15:02:22 1996
Path: ashpoly!cascade!brgate!saturno!titech!atakahashi
From: atakahashi@titech.ac.jp (Aiko Takahashi)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Nov04.150222.8284@titech.ac.jp>
Date: Mon, 04 Nov 1996 15:02:22 GMT
References: <1996Nov03.135722.9971@stanford.edu>
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In article <1996Nov03.135722.9971@stanford.edu>, tperez@stanford.edu (Thiago Pérez) writes:
> The Atari Falcon is the ultimate machine for decoding Project Stardust audio.
> Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard.

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

-- 
Aiko Takahashi
Tape trading list upon request. SASE required for international mail.

From ejohansson@panix.com Tue Nov 05 09:06:22 1996
Path: ashpoly!cascade!bigsur!panix!ejohansson
From: ejohansson@panix.com (Elaine Johansson)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Nov05.090622.8956@panix.com>
Date: Tue, 05 Nov 1996 09:06:22 GMT
References: <1996Nov03.135722.9971@stanford.edu>
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In article <1996Nov03.135722.9971@stanford.edu>, tperez@stanford.edu (Thiago Pérez) writes:
> The Atari Falcon is the ultimate machine for decoding Project Stardust audio.
> Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard.

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

-- 
Elaine Johansson | ejohansson@panix.com
PGP Key fingerprint: 7BDF 310D 5420 C7C6
"Keep the channels open."