From asuzuki@demon.co.uk Wed Jul 26 02:18:38 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!demon!asuzuki From: asuzuki@demon.co.uk (Amy Suzuki) Newsgroups: comp.dsp Subject: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Jul26.021838.8669@demon.co.uk> Date: Wed, 26 Jul 1995 02:18:38 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. Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients. Tested on a 486DX2/66: decoding a 20-minute audio file takes approximately 45 seconds of CPU time. Grab the source archive from ftp.ashford-poly.edu:/pub/telecom-archives/stardust/stardust-1.3.tar.gz. -- Amy Suzuki SupraFAXModem 28.8 @ ISDN 64k bps "5 sigma is a discovery. 7 is a question." From jperez@tum.de Thu Jul 27 07:59:38 1995 Path: ashpoly!cascade!mxgate!coyoacan!tum!jperez From: jperez@tum.de (Ji-woo Pérez) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Jul27.075938.9827@tum.de> Date: Thu, 27 Jul 1995 07:59:38 GMT References: <1995Jul26.021838.8669@demon.co.uk> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jul26.021838.8669@demon.co.uk>, asuzuki@demon.co.uk (Amy Suzuki) 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. -- Ji-woo Pérez | jperez@tum.de PGP Key fingerprint: 51F3 CBE8 A601 07EC "Keep the channels open." From gsantos@pacbell.net Sat Jul 29 01:50:38 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pacbell!gsantos From: gsantos@pacbell.net (Göran Santos) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Jul29.015038.1074@pacbell.net> Date: Sat, 29 Jul 1995 01:50:38 GMT References: <1995Jul26.021838.8669@demon.co.uk> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jul26.021838.8669@demon.co.uk>, asuzuki@demon.co.uk (Amy Suzuki) 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. -- Göran Santos Tape trading list upon request. SASE required for international mail.