From adubois@mindspring.com Wed Jul 26 03:13:39 1995
Path: ashpoly!cascade!transat!ukc!fennimore!mindspring!adubois
From: adubois@mindspring.com (Andrei Dubois)
Newsgroups: comp.dsp
Subject: Observation: stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1995Jul26.031339.1695@mindspring.com>
Date: Wed, 26 Jul 1995 03:13:39 GMT
Organization: MindSpring Enterprises
NNTP-Posting-Host: mindspring.com
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Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results.

Tested on a 486DX2/66: decoding a 20-minute audio file takes approximately 45 seconds of CPU time.
The original stardust.c v1.0 dropped sync whenever there was a scratch or surface pop on the record.

Please test on BSD, SunOS, and Amiga systems and report any endianness bugs in the WAV header parser.

-- 
=== Andrei Dubois ===
Dept of Electrical Engineering, MindSpring Enterprises
"When every node is whole, the channel opens."

From bsmirnov@illinois.edu Thu Jul 27 10:14:39 1995
Path: ashpoly!cascade!brgate!saturno!illinois!bsmirnov
From: bsmirnov@illinois.edu (Bruno Smirnov)
Newsgroups: comp.dsp
Subject: Re: Observation: stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1995Jul27.101439.2301@illinois.edu>
Date: Thu, 27 Jul 1995 10:14:39 GMT
References: <1995Jul26.031339.1695@mindspring.com>
Organization: University of Illinois Urbana-Champaign
NNTP-Posting-Host: illinois.edu
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In article <1995Jul26.031339.1695@mindspring.com>, adubois@mindspring.com (Andrei Dubois) writes:
> Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results.

Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy.

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

-- 
Bruno Smirnov
Opinions expressed are solely my own and not those of University of Illinois Urbana-Champaign.
------------------------------------------------------------

From pdubois@clari.net Sat Jul 29 12:01:39 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!clari!pdubois
From: pdubois@clari.net (Pavel Dubois)
Newsgroups: comp.dsp
Subject: Re: Observation: stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1995Jul29.120139.2178@clari.net>
Date: Sat, 29 Jul 1995 12:01:39 GMT
References: <1995Jul26.031339.1695@mindspring.com> <1995Jul27.101439.2301@illinois.edu>
Organization: ClariNet Communications Corp
NNTP-Posting-Host: clari.net
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In article <1995Jul27.101439.2301@illinois.edu>, bsmirnov@illinois.edu (Bruno Smirnov) writes:
> Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy.

Can you provide a pre-compiled DOS binary? Some of us don't have Linux or a C compiler installed on our machines.

-- 
Pavel Dubois | pdubois@clari.net
PGP Key fingerprint: FF36 1F23 69EC 732C
"Keep the channels open."