From jcampbell@kiae.su Tue Mar 19 12:45:33 1996
Path: ashpoly!bigsur!pacrim!jpgate!kamome!kiae!jcampbell
From: jcampbell@kiae.su (Jen Campbell)
Newsgroups: comp.dsp
Subject: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1996Mar19.124533.8985@kiae.su>
Date: Tue, 19 Mar 1996 12:45:33 GMT
Organization: Kurchatov Institute of Atomic Energy, Moscow
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Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results.

Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients.
Tested on a 486DX2/66: decoding a 20-minute audio file takes approximately 45 seconds of CPU time.

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

-- 
Jen Campbell | jcampbell@kiae.su
PGP Key fingerprint: DE66 4A33 2FD4 B910
"Keep the channels open."

From llarsson@purdue.edu Thu Mar 21 08:07:33 1996
Path: ashpoly!bigsur!pacrim!krgate!eunha!purdue!llarsson
From: llarsson@purdue.edu (Lars Larsson)
Newsgroups: comp.dsp
Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1996Mar21.080733.2145@purdue.edu>
Date: Thu, 21 Mar 1996 08:07:33 GMT
References: <1996Mar19.124533.8985@kiae.su>
Organization: Purdue University Engineering Computer Network
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In article <1996Mar19.124533.8985@kiae.su>, jcampbell@kiae.su (Jen Campbell) 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.

-- 
Lars Larsson | llarsson@purdue.edu
PGP Key fingerprint: 690B D286 7E6A 8046
"Keep the channels open."

From crodriguez@uni-hamburg.de Sat Mar 23 05:05:33 1996
Path: ashpoly!cascade!transat!eunet-de!hansebox!uni-hamburg!crodriguez
From: crodriguez@uni-hamburg.de (Callum Rodríguez)
Newsgroups: comp.dsp
Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1996Mar23.050533.9513@uni-hamburg.de>
Date: Sat, 23 Mar 1996 05:05:33 GMT
References: <1996Mar19.124533.8985@kiae.su> <1996Mar21.080733.2145@purdue.edu>
Organization: Universität Hamburg Fachbereich Informatik
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In article <1996Mar21.080733.2145@purdue.edu>, llarsson@purdue.edu (Lars Larsson) writes:
> Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy.

Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro.

My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise!

-- 
Callum Rodríguez | crodriguez@uni-hamburg.de
PGP Key fingerprint: C409 8CF7 E888 6D43
"Keep the channels open."