From tstewart@demon.co.uk Wed May 10 23:44:36 1995 Path: ashpoly!cascade!transat!ukc!fennimore!demon!tstewart From: tstewart@demon.co.uk (Tomas Stewart) Newsgroups: comp.dsp Subject: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995May10.234436.1428@demon.co.uk> Date: Wed, 10 May 1995 23:44:36 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. 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. -- Tomas Stewart Hayes Optima 288 @ 28,800 bps "We don't sign stars. We build them." From nito@panix.com Thu May 11 14:48:36 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!panix!nito From: nito@panix.com (Natalia Ito) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995May11.144836.1065@panix.com> Date: Thu, 11 May 1995 14:48:36 GMT References: <1995May10.234436.1428@demon.co.uk> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May10.234436.1428@demon.co.uk>, tstewart@demon.co.uk (Tomas Stewart) writes: > Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Natalia Ito "Marcus is not one man." Amiga 1200 (Blizzard 030/50) / FreeBSD 2.1 From noliveira@uu.net Thu May 11 20:48:36 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!uu!noliveira From: noliveira@uu.net (Natalia Oliveira) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995May11.204836.6993@uu.net> Date: Thu, 11 May 1995 20:48:36 GMT References: <1995May10.234436.1428@demon.co.uk> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1995May10.234436.1428@demon.co.uk>, tstewart@demon.co.uk (Tomas Stewart) writes: > Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. > Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients. Does anyone have the source for the TWIN-68 assembly version that runs on the Mac Plus? If you are posting from AOL, please read RFC 1036 before posting again. -- Natalia Oliveira Practical Peripherals 14.4 @ 28,800 bps "They will send a copy in my place." From snovak@earthlink.net Sat May 13 19:31:36 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!earthlink!snovak From: snovak@earthlink.net (Sun-mi Novak) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995May13.193136.9561@earthlink.net> Date: Sat, 13 May 1995 19:31:36 GMT References: <1995May10.234436.1428@demon.co.uk> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May10.234436.1428@demon.co.uk>, tstewart@demon.co.uk (Tomas Stewart) writes: > Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. > 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. -- Sun-mi Novak Tape trading list upon request. SASE required for international mail.