From mwatanabe@u-tokyo.ac.jp Sun Aug 21 15:26:03 1994 Path: ashpoly!cascade!mxgate!coyoacan!u-tokyo!mwatanabe From: mwatanabe@u-tokyo.ac.jp (Mike Watanabe) Newsgroups: comp.dsp Subject: [INFO] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Aug21.152603.6587@u-tokyo.ac.jp> Date: Sun, 21 Aug 1994 15:26:03 GMT Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. 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. Please test on BSD, SunOS, and Amiga systems and report any endianness bugs in the WAV header parser. -- Mike Watanabe Opinions expressed are solely my own and not those of University of Tokyo Department of Information Science. ------------------------------------------------------------ From mmoreau@ox.ac.uk Mon Aug 22 22:50:03 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!ox!mmoreau From: mmoreau@ox.ac.uk (Min-jun Moreau) Newsgroups: comp.dsp Subject: Re: [INFO] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Aug22.225003.6578@ox.ac.uk> Date: Mon, 22 Aug 1994 22:50:03 GMT References: <1994Aug21.152603.6587@u-tokyo.ac.jp> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Aug21.152603.6587@u-tokyo.ac.jp>, mwatanabe@u-tokyo.ac.jp (Mike Watanabe) 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. -- Min-jun Moreau Practical Peripherals 14.4 @ 28,800 bps "We don't sign stars. We build them." From bmuller@hanse.de Tue Aug 23 20:26:03 1994 Path: ashpoly!cascade!transat!ukc!fennimore!hanse!bmuller From: bmuller@hanse.de (Bruno Müller) Newsgroups: comp.dsp Subject: Re: [INFO] stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1994Aug23.202603.1569@hanse.de> Date: Tue, 23 Aug 1994 20:26:03 GMT References: <1994Aug21.152603.6587@u-tokyo.ac.jp> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Aug21.152603.6587@u-tokyo.ac.jp>, mwatanabe@u-tokyo.ac.jp (Mike Watanabe) 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. -- === Bruno Müller === Dept of Electrical Engineering, Hanse-Netzwerk Hamburg "The hatch is open. Is anyone listening?"