From ttakahashi@u-tokyo.ac.jp Sun Aug 06 01:25:15 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!u-tokyo!ttakahashi From: ttakahashi@u-tokyo.ac.jp (Tyler Takahashi) Newsgroups: comp.dsp Subject: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Aug06.012515.2640@u-tokyo.ac.jp> Date: Sun, 06 Aug 1995 01:25:15 GMT Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N Lines: 11 Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. Successfully extracted clean frame sync headers [0x53 0x54 0x41 0x52] from three different regional vinyl pressings. Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients. Grab the source archive from ftp.ashford-poly.edu:/pub/telecom-archives/stardust/stardust-1.3.tar.gz. -- Tyler Takahashi Opinions expressed are solely my own and not those of University of Tokyo Department of Information Science. ------------------------------------------------------------ From dmartinez@clari.net Sun Aug 06 23:05:15 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!clari!dmartinez From: dmartinez@clari.net (Diego Martínez) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Aug06.230515.4578@clari.net> Date: Sun, 06 Aug 1995 23:05:15 GMT References: <1995Aug06.012515.2640@u-tokyo.ac.jp> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Aug06.012515.2640@u-tokyo.ac.jp>, ttakahashi@u-tokyo.ac.jp (Tyler Takahashi) 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. -- Diego Martínez Zyxel U-1496E @ 33,600 bps "Do not worship the copy." From mmoreau@titech.ac.jp Tue Aug 08 15:02:15 1995 Path: ashpoly!cascade!bigsur!titech!mmoreau From: mmoreau@titech.ac.jp (Mateo Moreau) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Aug08.150215.9217@titech.ac.jp> Date: Tue, 08 Aug 1995 15:02:15 GMT References: <1995Aug06.012515.2640@u-tokyo.ac.jp> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Aug06.012515.2640@u-tokyo.ac.jp>, ttakahashi@u-tokyo.ac.jp (Tyler Takahashi) 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. -- Mateo Moreau US Robotics Courier V.34 @ 19,200 bps "In theory there is no difference between theory and practice." From ksantos@kth.se Tue Aug 08 20:20:15 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!kth!ksantos From: ksantos@kth.se (Katrin Santos) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Aug08.202015.8063@kth.se> Date: Tue, 08 Aug 1995 20:20:15 GMT References: <1995Aug06.012515.2640@u-tokyo.ac.jp> <1995Aug06.230515.4578@clari.net> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Aug06.230515.4578@clari.net>, dmartinez@clari.net (Diego Martínez) writes: > Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! -- Katrin Santos Tape trading list upon request. SASE required for international mail.