From anovak@uu.net Thu Sep 15 08:27:59 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!uu!anovak From: anovak@uu.net (Andrei Novak) Newsgroups: comp.dsp Subject: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Sep15.082759.1754@uu.net> Date: Thu, 15 Sep 1994 08:27:59 GMT Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients. The original stardust.c v1.0 dropped sync whenever there was a scratch or surface pop on the record. Grab the source archive from ftp.ashford-poly.edu:/pub/telecom-archives/stardust/stardust-1.3.tar.gz. -- Andrei Novak Opinions expressed are solely my own and not those of UUNET Technologies, Falls Church VA. ------------------------------------------------------------ From smoreau@uni-hamburg.de Fri Sep 16 09:11:59 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!uni-hamburg!smoreau From: smoreau@uni-hamburg.de (Seo-yeon Moreau) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Sep16.091159.2691@uni-hamburg.de> Date: Fri, 16 Sep 1994 09:11:59 GMT References: <1994Sep15.082759.1754@uu.net> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Sep15.082759.1754@uu.net>, anovak@uu.net (Andrei Novak) writes: > Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Seo-yeon Moreau *PLONK* filter active for trolls. Sun SparcStation 20 - NetBSD 1.0 From alaurent@uni-hamburg.de Sat Sep 17 13:35:59 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uni-hamburg!alaurent From: alaurent@uni-hamburg.de (Amy Laurent) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Sep17.133559.5513@uni-hamburg.de> Date: Sat, 17 Sep 1994 13:35:59 GMT References: <1994Sep15.082759.1754@uu.net> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Sep15.082759.1754@uu.net>, anovak@uu.net (Andrei Novak) writes: > Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. > Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! -- Amy Laurent Tape trading list upon request. SASE required for international mail. From tlaurent@cmu.edu Sun Sep 18 23:27:59 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!cmu!tlaurent From: tlaurent@cmu.edu (Tyler Laurent) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Sep18.232759.3974@cmu.edu> Date: Sun, 18 Sep 1994 23:27:59 GMT References: <1994Sep15.082759.1754@uu.net> <1994Sep17.133559.5513@uni-hamburg.de> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1994Sep17.133559.5513@uni-hamburg.de>, alaurent@uni-hamburg.de (Amy Laurent) writes: > On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- === Tyler Laurent === Dept of Electrical Engineering, Carnegie Mellon University School of CS "In theory there is no difference between theory and practice."