From agonzalez@mit.edu Thu Dec 07 22:29:38 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!mit!agonzalez From: agonzalez@mit.edu (Aiko González) Newsgroups: comp.dsp Subject: [INFO] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Dec07.222938.1666@mit.edu> Date: Thu, 07 Dec 1995 22:29:38 GMT Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients. The original stardust.c v1.0 dropped sync whenever there was a scratch or surface pop on the record. Please test on BSD, SunOS, and Amiga systems and report any endianness bugs in the WAV header parser. -- Aiko González US Robotics Courier V.34 @ 28,800 bps "Hold for relay." From mdubois@clari.net Sat Dec 09 10:04:38 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!clari!mdubois From: mdubois@clari.net (Marisol Dubois) Newsgroups: comp.dsp Subject: Re: [INFO] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Dec09.100438.7776@clari.net> Date: Sat, 09 Dec 1995 10:04:38 GMT References: <1995Dec07.222938.1666@mit.edu> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Dec07.222938.1666@mit.edu>, agonzalez@mit.edu (Aiko González) writes: > Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. > 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. -- Marisol Dubois *PLONK* filter active for trolls. Atari Falcon 030 - NetBSD 1.0 From sdubois@utexas.edu Sat Dec 09 17:17:38 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!utexas!sdubois From: sdubois@utexas.edu (Steve Dubois) Newsgroups: comp.dsp Subject: Re: [INFO] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Dec09.171738.3883@utexas.edu> Date: Sat, 09 Dec 1995 17:17:38 GMT References: <1995Dec07.222938.1666@mit.edu> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Dec07.222938.1666@mit.edu>, agonzalez@mit.edu (Aiko González) writes: > Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. 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! -- === Steve Dubois === Dept of Electrical Engineering, University of Texas at Austin "When every node is whole, the channel opens."