From llarsson@pipeline.com Thu Nov 02 04:10:25 1995 Path: ashpoly!cascade!mxgate!coyoacan!pipeline!llarsson From: llarsson@pipeline.com (Lisa Larsson) Newsgroups: comp.dsp Subject: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov02.041025.7176@pipeline.com> Date: Thu, 02 Nov 1995 04:10:25 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] 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. Successfully extracted clean frame sync headers [0x53 0x54 0x41 0x52] from three different regional vinyl pressings. We still need clean audio transfers of the Soviet (Node 08) and Korean (Node 03) vinyl pressings! -- === Lisa Larsson === Dept of Electrical Engineering, The Pipeline Internet Network "Row 14. No joke." From omartinez@earthlink.net Thu Nov 02 13:15:25 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!earthlink!omartinez From: omartinez@earthlink.net (Olga Martínez) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov02.131525.8517@earthlink.net> Date: Thu, 02 Nov 1995 13:15:25 GMT References: <1995Nov02.041025.7176@pipeline.com> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1995Nov02.041025.7176@pipeline.com>, llarsson@pipeline.com (Lisa Larsson) 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! My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Olga Martínez US Robotics Courier V.34 @ ISDN 64k bps "Extraordinary claims require extraordinary spectra." From kpopov@mit.edu Fri Nov 03 19:46:25 1995 Path: ashpoly!cascade!bigsur!mit!kpopov From: kpopov@mit.edu (Katrin Popov) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov03.194625.1674@mit.edu> Date: Fri, 03 Nov 1995 19:46:25 GMT References: <1995Nov02.041025.7176@pipeline.com> <1995Nov02.131525.8517@earthlink.net> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Nov02.131525.8517@earthlink.net>, omartinez@earthlink.net (Olga Martínez) writes: > On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. -- Katrin Popov "Hold for relay." 486DX2/66 (Linux 1.2.13) / TOS 4.04 From tsilva@illinois.edu Sun Nov 05 21:00:25 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!illinois!tsilva From: tsilva@illinois.edu (Tobias Silva) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov05.210025.7109@illinois.edu> Date: Sun, 05 Nov 1995 21:00:25 GMT References: <1995Nov02.041025.7176@pipeline.com> <1995Nov02.131525.8517@earthlink.net> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Nov02.131525.8517@earthlink.net>, omartinez@earthlink.net (Olga Martínez) writes: > On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! > My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Tobias Silva -- University of Illinois Urbana-Champaign "5 sigma is a discovery. 7 is a question." From lreyes@uni-hamburg.de Mon Nov 06 12:04:25 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!uni-hamburg!lreyes From: lreyes@uni-hamburg.de (Lucia Reyes) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Nov06.120425.9874@uni-hamburg.de> Date: Mon, 06 Nov 1995 12:04:25 GMT References: <1995Nov02.041025.7176@pipeline.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Nov02.041025.7176@pipeline.com>, llarsson@pipeline.com (Lisa Larsson) 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. Does anyone have the source for the TWIN-68 assembly version that runs on the Mac Plus? -- Lucia Reyes Zyxel U-1496E @ 14,400 bps "When every node is whole, the channel opens."