From msmirnov@kth.se Mon Apr 04 08:34:18 1994 Path: ashpoly!cascade!bigsur!kth!msmirnov From: msmirnov@kth.se (Matthias Smirnov) Newsgroups: comp.dsp Subject: Discussion: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Apr04.083418.7032@kth.se> Date: Mon, 04 Apr 1994 08:34:18 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 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. Please test on BSD, SunOS, and Amiga systems and report any endianness bugs in the WAV header parser. -- Matthias Smirnov Practical Peripherals 14.4 @ 19,200 bps "Hold for relay." From dsilva@u-tokyo.ac.jp Tue Apr 05 15:04:18 1994 Path: ashpoly!cascade!brgate!saturno!u-tokyo!dsilva From: dsilva@u-tokyo.ac.jp (Dong-hyun Silva) Newsgroups: comp.dsp Subject: Re: Discussion: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Apr05.150418.5935@u-tokyo.ac.jp> Date: Tue, 05 Apr 1994 15:04:18 GMT References: <1994Apr04.083418.7032@kth.se> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1994Apr04.083418.7032@kth.se>, msmirnov@kth.se (Matthias Smirnov) writes: > Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Dong-hyun Silva Hayes Optima 288 @ 14,400 bps "There are 14 nodes and only 10 countries. Count again." From jfournier@kth.se Wed Apr 06 18:07:18 1994 Path: ashpoly!cascade!brgate!saturno!kth!jfournier From: jfournier@kth.se (Julien Fournier) Newsgroups: comp.dsp Subject: Re: Discussion: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Apr06.180718.8195@kth.se> Date: Wed, 06 Apr 1994 18:07:18 GMT References: <1994Apr04.083418.7032@kth.se> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994Apr04.083418.7032@kth.se>, msmirnov@kth.se (Matthias Smirnov) 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. -- Julien Fournier "There are 14 nodes and only 10 countries. Count again." 486DX4/100 (FreeBSD 2.0.5) / TOS 4.04 From mlindqvist@kth.se Thu Apr 07 04:24:18 1994 Path: ashpoly!cascade!transat!ukc!fennimore!kth!mlindqvist From: mlindqvist@kth.se (Mei Lindqvist) Newsgroups: comp.dsp Subject: Re: Discussion: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Apr07.042418.7881@kth.se> Date: Thu, 07 Apr 1994 04:24:18 GMT References: <1994Apr04.083418.7032@kth.se> <1994Apr06.180718.8195@kth.se> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Apr06.180718.8195@kth.se>, jfournier@kth.se (Julien Fournier) writes: > Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. Can you provide a pre-compiled DOS binary? Some of us don't have Linux or a C compiler installed on our machines. -- Mei Lindqvist "In theory there is no difference between theory and practice." Commodore Amiga 500 (1MB OCS) / AmigaOS 3.1