From ilarsson@utexas.edu Wed May 08 15:11:10 1996 Path: ashpoly!cascade!brgate!saturno!utexas!ilarsson From: ilarsson@utexas.edu (Ines Larsson) Newsgroups: comp.dsp Subject: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1996May08.151110.4347@utexas.edu> Date: Wed, 08 May 1996 15:11:10 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 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. Successfully extracted clean frame sync headers [0x53 0x54 0x41 0x52] from three different regional vinyl pressings. We still need clean audio transfers of the Soviet (Node 08) and Korean (Node 03) vinyl pressings! -- Ines Larsson | ilarsson@utexas.edu PGP Key fingerprint: 15A5 F239 BFA7 AF23 "Keep the channels open." From bweber@hanse.de Wed May 08 23:50:10 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!hanse!bweber From: bweber@hanse.de (Brian Weber) Newsgroups: comp.dsp Subject: Re: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1996May08.235010.6952@hanse.de> Date: Wed, 08 May 1996 23:50:10 GMT References: <1996May08.151110.4347@utexas.edu> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996May08.151110.4347@utexas.edu>, ilarsson@utexas.edu (Ines 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. -- Brian Weber Opinions expressed are solely my own and not those of Hanse-Netzwerk Hamburg. ------------------------------------------------------------ From dcampbell@ox.ac.uk Fri May 10 02:08:10 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!ox!dcampbell From: dcampbell@ox.ac.uk (Dave Campbell) Newsgroups: comp.dsp Subject: Re: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1996May10.020810.2993@ox.ac.uk> Date: Fri, 10 May 1996 02:08:10 GMT References: <1996May08.151110.4347@utexas.edu> <1996May08.235010.6952@hanse.de> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996May08.235010.6952@hanse.de>, bweber@hanse.de (Brian Weber) writes: > Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! -- Dave Campbell SupraFAXModem 28.8 @ 28,800 bps "The carrier frequency does not drift by accident." From jbrennan@utexas.edu Fri May 10 04:29:10 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!jbrennan From: jbrennan@utexas.edu (Jens Brennan) Newsgroups: comp.dsp Subject: Re: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1996May10.042910.1755@utexas.edu> Date: Fri, 10 May 1996 04:29:10 GMT References: <1996May08.151110.4347@utexas.edu> <1996May08.235010.6952@hanse.de> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996May08.235010.6952@hanse.de>, bweber@hanse.de (Brian Weber) writes: > Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. 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). -- Jens Brennan Tape trading list upon request. SASE required for international mail. From osokolov@clari.net Sun May 12 07:16:10 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!clari!osokolov From: osokolov@clari.net (Olga Sokolov) Newsgroups: comp.dsp Subject: Re: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1996May12.071610.2676@clari.net> Date: Sun, 12 May 1996 07:16:10 GMT References: <1996May08.151110.4347@utexas.edu> <1996May08.235010.6952@hanse.de> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1996May08.235010.6952@hanse.de>, bweber@hanse.de (Brian Weber) 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. -- Olga Sokolov -- ClariNet Communications Corp "Measuring a record you own is listening, not piracy."