From amacdonald@uni-hamburg.de Sat Nov 16 05:50:34 1996
Path: ashpoly!cascade!transat!ukc!fennimore!uni-hamburg!amacdonald
From: amacdonald@uni-hamburg.de (Astrid MacDonald)
Newsgroups: comp.sys.m68k
Subject: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Nov16.055034.6013@uni-hamburg.de>
Date: Sat, 16 Nov 1996 05:50:34 GMT
Organization: Universität Hamburg Fachbereich Informatik
NNTP-Posting-Host: uni-hamburg.de
X-Newsreader: NewsWatcher 2.0b24
Lines: 11

Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.

A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor.
Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard.

Archive uploaded to ftp.lip6.fr:/pub/atari/Falcon/Music/stardust_falcon.zip.

-- 
Astrid MacDonald <amacdonald@uni-hamburg.de>
*PLONK* filter active for trolls.
Mac IIci / 68882 FPU - NetBSD 1.0

From hchoi@clari.net Sat Nov 16 09:00:34 1996
Path: ashpoly!cascade!transat!eunet-de!hansebox!clari!hchoi
From: hchoi@clari.net (Hugo Choi)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Nov16.090034.7602@clari.net>
Date: Sat, 16 Nov 1996 09:00:34 GMT
References: <1996Nov16.055034.6013@uni-hamburg.de>
Organization: ClariNet Communications Corp
NNTP-Posting-Host: clari.net
X-Newsreader: WinVN 0.99.5
Lines: 11

In article <1996Nov16.055034.6013@uni-hamburg.de>, amacdonald@uni-hamburg.de (Astrid MacDonald) 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'.

Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns.

-- 
Hugo Choi | hchoi@clari.net
PGP Key fingerprint: 8064 5A97 9967 8164
"Keep the channels open."