From snovak@stanford.edu Thu Nov 09 13:20:29 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!stanford!snovak From: snovak@stanford.edu (Seo-yeon Novak) Newsgroups: comp.dsp Subject: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov09.132029.9333@stanford.edu> Date: Thu, 09 Nov 1995 13:20:29 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Notes on porting stardust.c to GCC on Linux 1.2 and optimizing the inner filter loops. Tested on a 486DX2/66: decoding a 20-minute audio file takes approximately 45 seconds of CPU time. The original stardust.c v1.0 dropped sync whenever there was a scratch or surface pop on the record. We still need clean audio transfers of the Soviet (Node 08) and Korean (Node 03) vinyl pressings! -- Seo-yeon Novak *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From gpetrov@hanse.de Sat Nov 11 07:32:29 1995 Path: ashpoly!cascade!mxgate!coyoacan!hanse!gpetrov From: gpetrov@hanse.de (Göran Petrov) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov11.073229.4737@hanse.de> Date: Sat, 11 Nov 1995 07:32:29 GMT References: <1995Nov09.132029.9333@stanford.edu> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Nov09.132029.9333@stanford.edu>, snovak@stanford.edu (Seo-yeon Novak) writes: > Notes on porting stardust.c to GCC on Linux 1.2 and optimizing the inner filter loops. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! PGP Public key available via finger or upon request. -- Göran Petrov Practical Peripherals 14.4 @ 19,200 bps "Hold for relay." From msilva@mit.edu Sat Nov 11 13:15:29 1995 Path: ashpoly!cascade!bigsur!mit!msilva From: msilva@mit.edu (Mateo Silva) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov11.131529.3679@mit.edu> Date: Sat, 11 Nov 1995 13:15:29 GMT References: <1995Nov09.132029.9333@stanford.edu> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Nov09.132029.9333@stanford.edu>, snovak@stanford.edu (Seo-yeon Novak) writes: > Notes on porting stardust.c to GCC on Linux 1.2 and optimizing the inner filter loops. > 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. If you are posting from AOL, please read RFC 1036 before posting again. -- Mateo Silva *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0