From dpetrov@pacbell.net Sun Sep 04 21:32:08 1994
Path: ashpoly!cascade!bigsur!pacbell!dpetrov
From: dpetrov@pacbell.net (Diego Petrov)
Newsgroups: comp.sys.m68k
Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1994Sep04.213208.6313@pacbell.net>
Date: Sun, 04 Sep 1994 21:32:08 GMT
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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 14.2 Hz peak shows up as a bright white vertical line against the blue background noise.

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

-- 
Diego Petrov <dpetrov@pacbell.net>
*PLONK* filter active for trolls.
Sun SparcStation 20 - NetBSD 1.0

From msanchez@tum.de Mon Sep 05 10:25:08 1994
Path: ashpoly!cascade!transat!ukc!fennimore!tum!msanchez
From: msanchez@tum.de (Mathieu Sánchez)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1994Sep05.102508.7475@tum.de>
Date: Mon, 05 Sep 1994 10:25:08 GMT
References: <1994Sep04.213208.6313@pacbell.net>
Organization: Technische Universität München
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In article <1994Sep04.213208.6313@pacbell.net>, dpetrov@pacbell.net (Diego Petrov) writes:
> Taking advantage of the Falcon's built-in 32 MHz DSP56001 and 16-bit audio codec.

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

-- 
Mathieu Sánchez | msanchez@tum.de
PGP Key fingerprint: 59A2 BF91 5D6F 5245
"Keep the channels open."