From dlarsson@pipeline.com Mon Dec 05 04:57:19 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!pipeline!dlarsson
From: dlarsson@pipeline.com (Dmitri Larsson)
Newsgroups: comp.dsp
Subject: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1994Dec05.045719.2379@pipeline.com>
Date: Mon, 05 Dec 1994 04:57:19 GMT
Organization: The Pipeline Internet Network
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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.
Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients.

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

-- 
Dmitri Larsson
Opinions expressed are solely my own and not those of The Pipeline Internet Network.
------------------------------------------------------------

From kkowalski@tum.de Mon Dec 05 10:40:19 1994
Path: ashpoly!cascade!brgate!saturno!tum!kkowalski
From: kkowalski@tum.de (Kirsty Kowalski)
Newsgroups: comp.dsp
Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1994Dec05.104019.1532@tum.de>
Date: Mon, 05 Dec 1994 10:40:19 GMT
References: <1994Dec05.045719.2379@pipeline.com>
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In article <1994Dec05.045719.2379@pipeline.com>, dlarsson@pipeline.com (Dmitri Larsson) writes:
> 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.

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

Top-posters will be placed in my ~/.killfile without notice.

-- 
Kirsty Kowalski | kkowalski@tum.de
PGP Key fingerprint: 0B19 D9E8 0454 94B2
"Keep the channels open."

From eoliveira@mindspring.com Tue Dec 06 06:05:19 1994
Path: ashpoly!cascade!transat!eunet-de!hansebox!mindspring!eoliveira
From: eoliveira@mindspring.com (Elaine Oliveira)
Newsgroups: comp.dsp
Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1994Dec06.060519.8551@mindspring.com>
Date: Tue, 06 Dec 1994 06:05:19 GMT
References: <1994Dec05.045719.2379@pipeline.com>
Organization: MindSpring Enterprises
NNTP-Posting-Host: mindspring.com
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In article <1994Dec05.045719.2379@pipeline.com>, dlarsson@pipeline.com (Dmitri Larsson) writes:
> 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.

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

Unsubscribe me from this list! (Wait, this is Usenet, never mind).

-- 
Elaine Oliveira -- MindSpring Enterprises
"Hardware is temporary. The signal survives."