From pmoreno@earthlink.net Mon Apr 24 23:14:13 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!earthlink!pmoreno From: pmoreno@earthlink.net (Pavel Moreno) Newsgroups: comp.dsp Subject: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Apr24.231413.3830@earthlink.net> Date: Mon, 24 Apr 1995 23:14:13 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 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. Grab the source archive from ftp.ashford-poly.edu:/pub/telecom-archives/stardust/stardust-1.3.tar.gz. -- Pavel Moreno -- EarthLink Network "Do not worship the copy." From ahernandez@unam.mx Tue Apr 25 22:01:13 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!unam!ahernandez From: ahernandez@unam.mx (Andrei Hernández) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Apr25.220113.1054@unam.mx> Date: Tue, 25 Apr 1995 22:01:13 GMT References: <1995Apr24.231413.3830@earthlink.net> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Apr24.231413.3830@earthlink.net>, pmoreno@earthlink.net (Pavel Moreno) writes: > 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. Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Andrei Hernández -- Universidad Nacional Autónoma de México (DGSCA) "Extraordinary claims require extraordinary spectra." From hhernandez@mindspring.com Thu Apr 27 11:37:13 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!mindspring!hhernandez From: hhernandez@mindspring.com (Hana Hernández) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Apr27.113713.7067@mindspring.com> Date: Thu, 27 Apr 1995 11:37:13 GMT References: <1995Apr24.231413.3830@earthlink.net> <1995Apr25.220113.1054@unam.mx> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Apr25.220113.1054@unam.mx>, ahernandez@unam.mx (Andrei Hernández) writes: > Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! -- Hana Hernández Tape trading list upon request. SASE required for international mail. From spark@hanse.de Sat Apr 29 01:57:13 1995 Path: ashpoly!cascade!bigsur!hanse!spark From: spark@hanse.de (Steve Park) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Apr29.015713.3319@hanse.de> Date: Sat, 29 Apr 1995 01:57:13 GMT References: <1995Apr24.231413.3830@earthlink.net> <1995Apr25.220113.1054@unam.mx> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Apr25.220113.1054@unam.mx>, ahernandez@unam.mx (Andrei Hernández) writes: > Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. -- Steve Park Practical Peripherals 14.4 @ 19,200 bps "Do not worship the copy." From mgonzalez@panix.com Sat Apr 29 20:52:13 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!panix!mgonzalez From: mgonzalez@panix.com (Matthias González) Newsgroups: comp.dsp Subject: Re: WTB/WTT: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Apr29.205213.3929@panix.com> Date: Sat, 29 Apr 1995 20:52:13 GMT References: <1995Apr24.231413.3830@earthlink.net> <1995Apr25.220113.1054@unam.mx> <1995Apr27.113713.7067@mindspring.com> Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Apr27.113713.7067@mindspring.com>, hhernandez@mindspring.com (Hana Hernández) writes: > On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! -- Matthias González *PLONK* filter active for trolls. Atari TT030 - NetBSD 1.0