From kramirez@ox.ac.uk Mon Oct 02 06:23:57 1995 Path: ashpoly!cascade!transat!ukc!fennimore!ox!kramirez From: kramirez@ox.ac.uk (Katrin Ramírez) Newsgroups: comp.dsp Subject: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Oct02.062357.6891@ox.ac.uk> Date: Mon, 02 Oct 1995 06:23:57 GMT Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 10 Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. Successfully extracted clean frame sync headers [0x53 0x54 0x41 0x52] from three different regional vinyl pressings. Version 1.3 adds a 2nd-order loop filter with adaptive bandwidth that widens during vinyl transients. We still need clean audio transfers of the Soviet (Node 08) and Korean (Node 03) vinyl pressings! -- Katrin Ramírez -- Oxford University Computing Laboratory "Tape doesn't lie at 02:14. Ears do." From csanchez@purdue.edu Wed Oct 04 01:57:57 1995 Path: ashpoly!cascade!mxgate!coyoacan!purdue!csanchez From: csanchez@purdue.edu (Callum Sánchez) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Oct04.015757.4431@purdue.edu> Date: Wed, 04 Oct 1995 01:57:57 GMT References: <1995Oct02.062357.6891@ox.ac.uk> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Oct02.062357.6891@ox.ac.uk>, kramirez@ox.ac.uk (Katrin Ramírez) 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. -- Callum Sánchez -- Purdue University Engineering Computer Network "Do not worship the copy." From atanaka@tum.de Thu Oct 05 11:21:57 1995 Path: ashpoly!cascade!mxgate!coyoacan!tum!atanaka From: atanaka@tum.de (Amy Tanaka) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Oct05.112157.1072@tum.de> Date: Thu, 05 Oct 1995 11:21:57 GMT References: <1995Oct02.062357.6891@ox.ac.uk> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Oct02.062357.6891@ox.ac.uk>, kramirez@ox.ac.uk (Katrin Ramírez) writes: > Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. > Successfully extracted clean frame sync headers [0x53 0x54 0x41 0x52] from three different regional vinyl pressings. Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Amy Tanaka Tape trading list upon request. SASE required for international mail. From dlarsson@clari.net Thu Oct 05 19:09:57 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!clari!dlarsson From: dlarsson@clari.net (Dmitri Larsson) Newsgroups: comp.dsp Subject: Re: Question: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Oct05.190957.3845@clari.net> Date: Thu, 05 Oct 1995 19:09:57 GMT References: <1995Oct02.062357.6891@ox.ac.uk> <1995Oct04.015757.4431@purdue.edu> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Oct04.015757.4431@purdue.edu>, csanchez@purdue.edu (Callum Sánchez) writes: > Compiled cleanly under gcc -O2 on my Slackware box. The adaptive Costas loop is rock solid even on my scratched US copy. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! -- Dmitri Larsson Zyxel U-1496E @ 33,600 bps "The hatch is open. Is anyone listening?"