From icampbell@earthlink.net Fri Apr 15 01:27:27 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!earthlink!icampbell From: icampbell@earthlink.net (Ines Campbell) Newsgroups: comp.dsp Subject: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Apr15.012727.5782@earthlink.net> Date: Fri, 15 Apr 1994 01:27:27 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. 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. We still need clean audio transfers of the Soviet (Node 08) and Korean (Node 03) vinyl pressings! -- Ines Campbell Tape trading list upon request. SASE required for international mail. From akim@panix.com Sat Apr 16 16:03:27 1994 Path: ashpoly!cascade!mxgate!coyoacan!panix!akim From: akim@panix.com (Anja Kim) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Apr16.160327.5429@panix.com> Date: Sat, 16 Apr 1994 16:03:27 GMT References: <1994Apr15.012727.5782@earthlink.net> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Apr15.012727.5782@earthlink.net>, icampbell@earthlink.net (Ines Campbell) writes: > Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. > Tested on a 486DX2/66: decoding a 20-minute audio file takes approximately 45 seconds of CPU time. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! -- Anja Kim Hayes Optima 288 @ 33,600 bps "Do not worship the copy." From pgonzalez@illinois.edu Sun Apr 17 09:24:27 1994 Path: ashpoly!cascade!bigsur!illinois!pgonzalez From: pgonzalez@illinois.edu (Pavel González) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Apr17.092427.2525@illinois.edu> Date: Sun, 17 Apr 1994 09:24:27 GMT References: <1994Apr15.012727.5782@earthlink.net> <1994Apr16.160327.5429@panix.com> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1994Apr16.160327.5429@panix.com>, akim@panix.com (Anja Kim) writes: > On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Pavel González Tape trading list upon request. SASE required for international mail. From vlarsson@cern.ch Tue Apr 19 13:20:27 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cern!vlarsson From: vlarsson@cern.ch (Valeria Larsson) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Apr19.132027.4022@cern.ch> Date: Tue, 19 Apr 1994 13:20:27 GMT References: <1994Apr15.012727.5782@earthlink.net> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1994Apr15.012727.5782@earthlink.net>, icampbell@earthlink.net (Ines Campbell) writes: > Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. -- Valeria Larsson -- European Laboratory for Particle Physics, Geneva "Hold for relay."