From esilva@panix.com Fri Nov 24 16:50:41 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!panix!esilva
From: esilva@panix.com (Elaine Silva)
Newsgroups: comp.sys.m68k
Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Nov24.165041.4421@panix.com>
Date: Fri, 24 Nov 1995 16:50:41 GMT
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Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.

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.

Requires 4MB ST-RAM and an RGB or VGA monitor.

-- 
Elaine Silva | esilva@panix.com
PGP Key fingerprint: 4A1F 304C FECC 3C01
"Keep the channels open."

From mweber@mit.edu Sun Nov 26 02:04:41 1995
Path: ashpoly!cascade!brgate!saturno!mit!mweber
From: mweber@mit.edu (Mei Weber)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Nov26.020441.6779@mit.edu>
Date: Sun, 26 Nov 1995 02:04:41 GMT
References: <1995Nov24.165041.4421@panix.com>
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In article <1995Nov24.165041.4421@panix.com>, esilva@panix.com (Elaine Silva) writes:
> Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.
> 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'.

-- 
=== Mei Weber ===
Dept of Electrical Engineering, Massachusetts Institute of Technology
"The carrier frequency does not drift by accident."