From dpopov@uni-hamburg.de Sat Dec 10 11:57:43 1994 Path: ashpoly!cascade!brgate!saturno!uni-hamburg!dpopov From: dpopov@uni-hamburg.de (Diego Popov) Newsgroups: comp.dsp Subject: [FLAME] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Dec10.115743.6224@uni-hamburg.de> Date: Sat, 10 Dec 1994 11:57:43 GMT Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. The original stardust.c v1.0 dropped sync whenever there was a scratch or surface pop on the record. 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 Popov Opinions expressed are solely my own and not those of Universität Hamburg Fachbereich Informatik. ------------------------------------------------------------ From atanaka@cmu.edu Sun Dec 11 04:38:43 1994 Path: ashpoly!cascade!mxgate!coyoacan!cmu!atanaka From: atanaka@cmu.edu (Anja Tanaka) Newsgroups: comp.dsp Subject: Re: [FLAME] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Dec11.043843.2746@cmu.edu> Date: Sun, 11 Dec 1994 04:38:43 GMT References: <1994Dec10.115743.6224@uni-hamburg.de> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Dec10.115743.6224@uni-hamburg.de>, dpopov@uni-hamburg.de (Diego Popov) writes: > Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. -- Anja Tanaka Hayes Optima 288 @ 14,400 bps "When every node is whole, the channel opens." From lschneider@uni-hamburg.de Tue Dec 13 08:07:43 1994 Path: ashpoly!cascade!mxgate!coyoacan!uni-hamburg!lschneider From: lschneider@uni-hamburg.de (Lucia Schneider) Newsgroups: comp.dsp Subject: Re: [FLAME] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Dec13.080743.7981@uni-hamburg.de> Date: Tue, 13 Dec 1994 08:07:43 GMT References: <1994Dec10.115743.6224@uni-hamburg.de> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Dec10.115743.6224@uni-hamburg.de>, dpopov@uni-hamburg.de (Diego Popov) writes: > Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. > The original stardust.c v1.0 dropped sync whenever there was a scratch or surface pop on the record. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! -- Lucia Schneider -- Universität Hamburg Fachbereich Informatik "In theory there is no difference between theory and practice."