From mnakamura@delphi.com Mon Mar 07 12:18:12 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!delphi!mnakamura From: mnakamura@delphi.com (Min-jun Nakamura) Newsgroups: comp.dsp Subject: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Mar07.121812.8136@delphi.com> Date: Mon, 07 Mar 1994 12:18:12 GMT Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com 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. Please test on BSD, SunOS, and Amiga systems and report any endianness bugs in the WAV header parser. -- Min-jun Nakamura Opinions expressed are solely my own and not those of Delphi Internet Services. ------------------------------------------------------------ From ctanaka@u-tokyo.ac.jp Wed Mar 09 11:33:12 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!u-tokyo!ctanaka From: ctanaka@u-tokyo.ac.jp (Camila Tanaka) Newsgroups: comp.dsp Subject: Re: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Mar09.113312.2537@u-tokyo.ac.jp> Date: Wed, 09 Mar 1994 11:33:12 GMT References: <1994Mar07.121812.8136@delphi.com> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1994Mar07.121812.8136@delphi.com>, mnakamura@delphi.com (Min-jun Nakamura) 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. Tar.gz archive gave a CRC error with PKUNZIP. Make sure you upload in binary mode, not ASCII! Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Camila Tanaka | ctanaka@u-tokyo.ac.jp PGP Key fingerprint: 3AAE 31A1 393B 5431 "Keep the channels open." From sstewart@earthlink.net Thu Mar 10 03:32:12 1994 Path: ashpoly!cascade!bigsur!earthlink!sstewart From: sstewart@earthlink.net (Sun-mi Stewart) Newsgroups: comp.dsp Subject: Re: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Mar10.033212.3827@earthlink.net> Date: Thu, 10 Mar 1994 03:32:12 GMT References: <1994Mar07.121812.8136@delphi.com> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1994Mar07.121812.8136@delphi.com>, mnakamura@delphi.com (Min-jun Nakamura) writes: > Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! If you are posting from AOL, please read RFC 1036 before posting again. -- Sun-mi Stewart Zyxel U-1496E @ 33,600 bps "In theory there is no difference between theory and practice." From lnovak@kth.se Fri Mar 11 02:23:12 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!kth!lnovak From: lnovak@kth.se (Lisa Novak) Newsgroups: comp.dsp Subject: Re: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Mar11.022312.7826@kth.se> Date: Fri, 11 Mar 1994 02:23:12 GMT References: <1994Mar07.121812.8136@delphi.com> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1994Mar07.121812.8136@delphi.com>, mnakamura@delphi.com (Min-jun Nakamura) 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. Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Lisa Novak Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm. ------------------------------------------------------------ From mmuller@hanse.de Sat Mar 12 04:18:12 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!hanse!mmuller From: mmuller@hanse.de (Mathieu Müller) Newsgroups: comp.dsp Subject: Re: Data: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Mar12.041812.4778@hanse.de> Date: Sat, 12 Mar 1994 04:18:12 GMT References: <1994Mar07.121812.8136@delphi.com> <1994Mar10.033212.3827@earthlink.net> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1994Mar10.033212.3827@earthlink.net>, sstewart@earthlink.net (Sun-mi Stewart) writes: > On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! > If you are posting from AOL, please read RFC 1036 before posting again. Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. -- Mathieu Müller *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0