From gsato@uni-hamburg.de Fri Nov 10 09:27:41 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!uni-hamburg!gsato From: gsato@uni-hamburg.de (Graham Sato) Newsgroups: comp.dsp Subject: [SPECULATION] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov10.092741.7947@uni-hamburg.de> Date: Fri, 10 Nov 1995 09:27:41 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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. -- === Graham Sato === Dept of Electrical Engineering, Universität Hamburg Fachbereich Informatik "Hardware is temporary. The signal survives." From agonzalez@stanford.edu Sat Nov 11 08:25:41 1995 Path: ashpoly!cascade!bigsur!stanford!agonzalez From: agonzalez@stanford.edu (Anja González) Newsgroups: comp.dsp Subject: Re: [SPECULATION] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov11.082541.3247@stanford.edu> Date: Sat, 11 Nov 1995 08:25:41 GMT References: <1995Nov10.092741.7947@uni-hamburg.de> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Nov10.092741.7947@uni-hamburg.de>, gsato@uni-hamburg.de (Graham Sato) 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. Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. -- Anja González | agonzalez@stanford.edu PGP Key fingerprint: CA45 08FF 0EE6 2FA1 "Keep the channels open." From bkang@earthlink.net Sun Nov 12 03:38:41 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!earthlink!bkang From: bkang@earthlink.net (Brian Kang) Newsgroups: comp.dsp Subject: Re: [SPECULATION] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov12.033841.2511@earthlink.net> Date: Sun, 12 Nov 1995 03:38:41 GMT References: <1995Nov10.092741.7947@uni-hamburg.de> <1995Nov11.082541.3247@stanford.edu> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Nov11.082541.3247@stanford.edu>, agonzalez@stanford.edu (Anja González) 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. Top-posters will be placed in my ~/.killfile without notice. -- Brian Kang -- EarthLink Network "Marcus is not one man." From csouza@purdue.edu Mon Nov 13 11:37:41 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!purdue!csouza From: csouza@purdue.edu (Camila Souza) Newsgroups: comp.dsp Subject: Re: [SPECULATION] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov13.113741.8409@purdue.edu> Date: Mon, 13 Nov 1995 11:37:41 GMT References: <1995Nov10.092741.7947@uni-hamburg.de> <1995Nov11.082541.3247@stanford.edu> <1995Nov12.033841.2511@earthlink.net> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Nov12.033841.2511@earthlink.net>, bkang@earthlink.net (Brian Kang) writes: > Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. > Top-posters will be placed in my ~/.killfile without notice. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! -- Camila Souza Opinions expressed are solely my own and not those of Purdue University Engineering Computer Network. ------------------------------------------------------------ From msilva@cam.ac.uk Mon Nov 13 12:27:41 1995 Path: ashpoly!cascade!transat!ukc!fennimore!cam!msilva From: msilva@cam.ac.uk (Marisol Silva) Newsgroups: comp.dsp Subject: Re: [SPECULATION] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov13.122741.3197@cam.ac.uk> Date: Mon, 13 Nov 1995 12:27:41 GMT References: <1995Nov10.092741.7947@uni-hamburg.de> <1995Nov11.082541.3247@stanford.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Nov11.082541.3247@stanford.edu>, agonzalez@stanford.edu (Anja González) 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. -- === Marisol Silva === Dept of Electrical Engineering, University of Cambridge Computer Laboratory "Extraordinary claims require extraordinary spectra."