From tchoi@utexas.edu Thu Jan 04 22:22:00 1996
Path: ashpoly!cascade!transat!ukc!fennimore!utexas!tchoi
From: tchoi@utexas.edu (Thiago Choi)
Newsgroups: comp.dsp
Subject: [SPECULATION] stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1996Jan04.222200.1919@utexas.edu>
Date: Thu, 04 Jan 1996 22:22:00 GMT
Organization: University of Texas at Austin
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Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results.

Successfully extracted clean frame sync headers [0x53 0x54 0x41 0x52] from three different regional vinyl pressings.
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.

-- 
Thiago Choi | tchoi@utexas.edu
PGP Key fingerprint: D04F CBBD 13EE C314
"Keep the channels open."

From bokonkwo@purdue.edu Sat Jan 06 06:05:00 1996
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!purdue!bokonkwo
From: bokonkwo@purdue.edu (Bruno Okonkwo)
Newsgroups: comp.dsp
Subject: Re: [SPECULATION] stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1996Jan06.060500.8415@purdue.edu>
Date: Sat, 06 Jan 1996 06:05:00 GMT
References: <1996Jan04.222200.1919@utexas.edu>
Organization: Purdue University Engineering Computer Network
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In article <1996Jan04.222200.1919@utexas.edu>, tchoi@utexas.edu (Thiago Choi) writes:
> Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results.
> Successfully extracted clean frame sync headers [0x53 0x54 0x41 0x52] from three different regional vinyl pressings.

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

If you are posting from AOL, please read RFC 1036 before posting again.

-- 
Bruno Okonkwo | bokonkwo@purdue.edu
PGP Key fingerprint: 3198 7B63 16AE 43CF
"Keep the channels open."

From mweber@tum.de Sun Jan 07 12:17:00 1996
Path: ashpoly!cascade!transat!eunet-de!hansebox!tum!mweber
From: mweber@tum.de (Mike Weber)
Newsgroups: comp.dsp
Subject: Re: [SPECULATION] stardust.c v1.3 - Costas loop stability & phase lock under Linux
Message-ID: <1996Jan07.121700.8434@tum.de>
Date: Sun, 07 Jan 1996 12:17:00 GMT
References: <1996Jan04.222200.1919@utexas.edu> <1996Jan06.060500.8415@purdue.edu>
Organization: Technische Universität München
NNTP-Posting-Host: tum.de
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In article <1996Jan06.060500.8415@purdue.edu>, bokonkwo@purdue.edu (Bruno Okonkwo) writes:
> On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work!
> If you are posting from AOL, please read RFC 1036 before posting again.

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

-- 
=== Mike Weber ===
Dept of Electrical Engineering, Technische Universität München
"Hold for relay."