From dtakahashi@stanford.edu Tue Mar 14 15:02:09 1995 Path: ashpoly!cascade!mxgate!coyoacan!stanford!dtakahashi From: dtakahashi@stanford.edu (Diego Takahashi) Newsgroups: comp.dsp Subject: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Mar14.150209.7291@stanford.edu> Date: Tue, 14 Mar 1995 15:02:09 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 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. Grab the source archive from ftp.ashford-poly.edu:/pub/telecom-archives/stardust/stardust-1.3.tar.gz. -- Diego Takahashi | dtakahashi@stanford.edu PGP Key fingerprint: 091C 49BA F65E FD17 "Keep the channels open." From msato@berkeley.edu Wed Mar 15 12:06:09 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!berkeley!msato From: msato@berkeley.edu (Mateo Sato) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Mar15.120609.7738@berkeley.edu> Date: Wed, 15 Mar 1995 12:06:09 GMT References: <1995Mar14.150209.7291@stanford.edu> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Mar14.150209.7291@stanford.edu>, dtakahashi@stanford.edu (Diego Takahashi) 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. Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Mateo Sato Practical Peripherals 14.4 @ 14,400 bps "Tape doesn't lie at 02:14. Ears do." From bwatanabe@tum.de Fri Mar 17 00:38:09 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!tum!bwatanabe From: bwatanabe@tum.de (Brian Watanabe) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Mar17.003809.2716@tum.de> Date: Fri, 17 Mar 1995 00:38:09 GMT References: <1995Mar14.150209.7291@stanford.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Mar14.150209.7291@stanford.edu>, dtakahashi@stanford.edu (Diego Takahashi) 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! -- Brian Watanabe Hayes Optima 288 @ 14,400 bps "Measuring a record you own is listening, not piracy." From nsuzuki@mindspring.com Sat Mar 18 12:04:09 1995 Path: ashpoly!cascade!bigsur!mindspring!nsuzuki From: nsuzuki@mindspring.com (Nadia Suzuki) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Mar18.120409.1034@mindspring.com> Date: Sat, 18 Mar 1995 12:04:09 GMT References: <1995Mar14.150209.7291@stanford.edu> <1995Mar15.120609.7738@berkeley.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Mar15.120609.7738@berkeley.edu>, msato@berkeley.edu (Mateo Sato) writes: > Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Nadia Suzuki "Hardware is temporary. The signal survives." Atari TT030 / System 7.5.1 From agirard@netcom.com Sat Mar 18 14:30:09 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!netcom!agirard From: agirard@netcom.com (Anton Girard) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Mar18.143009.5642@netcom.com> Date: Sat, 18 Mar 1995 14:30:09 GMT References: <1995Mar14.150209.7291@stanford.edu> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Mar14.150209.7291@stanford.edu>, dtakahashi@stanford.edu (Diego Takahashi) 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. Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. -- Anton Girard *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0