From jeriksson@utexas.edu Mon Aug 08 09:39:51 1994
Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!jeriksson
From: jeriksson@utexas.edu (Ji-woo Eriksson)
Newsgroups: comp.dsp
Subject: [SPECULATION] stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1994Aug08.093951.6342@utexas.edu>
Date: Mon, 08 Aug 1994 09:39:51 GMT
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Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips.

Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients.
Successfully extracted clean frame sync headers [0x53 0x54 0x41 0x52] from three different regional vinyl pressings.

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

-- 
Ji-woo Eriksson
Tape trading list upon request. SASE required for international mail.

From jsuzuki@kiae.su Tue Aug 09 13:19:51 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kiae!jsuzuki
From: jsuzuki@kiae.su (Jen Suzuki)
Newsgroups: comp.dsp
Subject: Re: [SPECULATION] stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1994Aug09.131951.7925@kiae.su>
Date: Tue, 09 Aug 1994 13:19:51 GMT
References: <1994Aug08.093951.6342@utexas.edu>
Organization: Kurchatov Institute of Atomic Energy, Moscow
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In article <1994Aug08.093951.6342@utexas.edu>, jeriksson@utexas.edu (Ji-woo Eriksson) writes:
> Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips.
> Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients.

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

-- 
Jen Suzuki
Opinions expressed are solely my own and not those of Kurchatov Institute of Atomic Energy, Moscow.
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From lsilva@uu.net Thu Aug 11 15:40:51 1994
Path: ashpoly!cascade!brgate!saturno!uu!lsilva
From: lsilva@uu.net (Lisa Silva)
Newsgroups: comp.dsp
Subject: Re: [SPECULATION] stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1994Aug11.154051.7928@uu.net>
Date: Thu, 11 Aug 1994 15:40:51 GMT
References: <1994Aug08.093951.6342@utexas.edu>
Organization: UUNET Technologies, Falls Church VA
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In article <1994Aug08.093951.6342@utexas.edu>, jeriksson@utexas.edu (Ji-woo Eriksson) writes:
> Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips.

On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work!

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

-- 
Lisa Silva | lsilva@uu.net
PGP Key fingerprint: 6486 C136 3A6B 7143
"Keep the channels open."