From nkim@uu.net Mon Oct 09 11:51:40 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!uu!nkim
From: nkim@uu.net (Nadia Kim)
Newsgroups: comp.sys.m68k
Subject: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Oct09.115140.7095@uu.net>
Date: Mon, 09 Oct 1995 11:51:40 GMT
Organization: UUNET Technologies, Falls Church VA
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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.
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.

-- 
Nadia Kim -- UUNET Technologies, Falls Church VA
"The carrier frequency does not drift by accident."

From dhernandez@hanse.de Mon Oct 09 19:13:40 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!hanse!dhernandez
From: dhernandez@hanse.de (Dmitri Hernández)
Newsgroups: comp.sys.m68k
Subject: Re: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Oct09.191340.6251@hanse.de>
Date: Mon, 09 Oct 1995 19:13:40 GMT
References: <1995Oct09.115140.7095@uu.net>
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In article <1995Oct09.115140.7095@uu.net>, nkim@uu.net (Nadia Kim) 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'.

-- 
Dmitri Hernández | dhernandez@hanse.de
PGP Key fingerprint: 733A 19B5 243A DC8F
"Keep the channels open."

From mmuller@illinois.edu Wed Oct 11 06:23:40 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!illinois!mmuller
From: mmuller@illinois.edu (Matthias Müller)
Newsgroups: comp.sys.m68k
Subject: Re: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Oct11.062340.9978@illinois.edu>
Date: Wed, 11 Oct 1995 06:23:40 GMT
References: <1995Oct09.115140.7095@uu.net>
Organization: University of Illinois Urbana-Champaign
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In article <1995Oct09.115140.7095@uu.net>, nkim@uu.net (Nadia Kim) 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'.

-- 
Matthias Müller -- University of Illinois Urbana-Champaign
"There are 14 nodes and only 10 countries. Count again."