From vtakahashi@uu.net Thu May 04 01:07:00 1995 Path: ashpoly!cascade!transat!ukc!fennimore!uu!vtakahashi From: vtakahashi@uu.net (Valeria Takahashi) Newsgroups: comp.dsp Subject: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995May04.010700.8343@uu.net> Date: Thu, 04 May 1995 01:07:00 GMT Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: Netscape 1.1N 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! -- Valeria Takahashi | vtakahashi@uu.net PGP Key fingerprint: DB69 9A5A CC37 B57E "Keep the channels open." From mkowalski@illinois.edu Thu May 04 13:53:00 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!illinois!mkowalski From: mkowalski@illinois.edu (Marisol Kowalski) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995May04.135300.1674@illinois.edu> Date: Thu, 04 May 1995 13:53:00 GMT References: <1995May04.010700.8343@uu.net> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995May04.010700.8343@uu.net>, vtakahashi@uu.net (Valeria Takahashi) 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. -- Marisol Kowalski "In theory there is no difference between theory and practice." Commodore Amiga 500 (1MB OCS) / NEXTSTEP 3.3 From ggonzalez@uni-hamburg.de Thu May 04 21:47:00 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uni-hamburg!ggonzalez From: ggonzalez@uni-hamburg.de (Göran González) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995May04.214700.7896@uni-hamburg.de> Date: Thu, 04 May 1995 21:47:00 GMT References: <1995May04.010700.8343@uu.net> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995May04.010700.8343@uu.net>, vtakahashi@uu.net (Valeria Takahashi) 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! My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Göran González *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From gmoreau@cern.ch Sat May 06 02:21:00 1995 Path: ashpoly!cascade!bigsur!cern!gmoreau From: gmoreau@cern.ch (Graham Moreau) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995May06.022100.1641@cern.ch> Date: Sat, 06 May 1995 02:21:00 GMT References: <1995May04.010700.8343@uu.net> <1995May04.214700.7896@uni-hamburg.de> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995May04.214700.7896@uni-hamburg.de>, ggonzalez@uni-hamburg.de (Göran González) writes: > On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! Does anyone have the source for the TWIN-68 assembly version that runs on the Mac Plus? Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Graham Moreau Hayes Optima 288 @ 33,600 bps "There are 14 nodes and only 10 countries. Count again."