From msato@stanford.edu Sat Oct 26 14:50:57 1996
Path: ashpoly!bigsur!pacrim!krgate!eunha!stanford!msato
From: msato@stanford.edu (Mateo Sato)
Newsgroups: comp.dsp
Subject: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1996Oct26.145057.2766@stanford.edu>
Date: Sat, 26 Oct 1996 14:50:57 GMT
Organization: Stanford University Computer Systems Lab
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Notes on porting stardust.c to GCC on Linux 1.2 and optimizing the inner filter loops.

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.

-- 
Mateo Sato -- Stanford University Computer Systems Lab
"In theory there is no difference between theory and practice."

From jrobertson@pipeline.com Sun Oct 27 15:11:57 1996
Path: ashpoly!cascade!brgate!saturno!pipeline!jrobertson
From: jrobertson@pipeline.com (Julien Robertson)
Newsgroups: comp.dsp
Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1996Oct27.151157.2634@pipeline.com>
Date: Sun, 27 Oct 1996 15:11:57 GMT
References: <1996Oct26.145057.2766@stanford.edu>
Organization: The Pipeline Internet Network
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In article <1996Oct26.145057.2766@stanford.edu>, msato@stanford.edu (Mateo Sato) writes:
> Notes on porting stardust.c to GCC on Linux 1.2 and optimizing the inner filter loops.
> Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients.

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

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