From mperez@demon.co.uk Mon May 15 21:37:00 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!demon!mperez From: mperez@demon.co.uk (Min-jun Pérez) Newsgroups: comp.dsp Subject: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995May15.213700.7012@demon.co.uk> Date: Mon, 15 May 1995 21:37:00 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: NewsWatcher 2.0b24 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. Grab the source archive from ftp.ashford-poly.edu:/pub/telecom-archives/stardust/stardust-1.3.tar.gz. -- Min-jun Pérez Practical Peripherals 14.4 @ ISDN 64k bps "Hold for relay." From ahughes@cern.ch Wed May 17 06:12:00 1995 Path: ashpoly!cascade!bigsur!cern!ahughes From: ahughes@cern.ch (Andrei Hughes) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995May17.061200.4119@cern.ch> Date: Wed, 17 May 1995 06:12:00 GMT References: <1995May15.213700.7012@demon.co.uk> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May15.213700.7012@demon.co.uk>, mperez@demon.co.uk (Min-jun Pérez) 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. -- Andrei Hughes Tape trading list upon request. SASE required for international mail.