From mmoreno@purdue.edu Sun Sep 10 16:20:24 1995 Path: ashpoly!cascade!transat!ukc!fennimore!purdue!mmoreno From: mmoreno@purdue.edu (Morag Moreno) Newsgroups: comp.dsp Subject: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Sep10.162024.7313@purdue.edu> Date: Sun, 10 Sep 1995 16:20:24 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 11 Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. 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. Grab the source archive from ftp.ashford-poly.edu:/pub/telecom-archives/stardust/stardust-1.3.tar.gz. -- Morag Moreno *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From tduarte@utexas.edu Sun Sep 10 22:42:24 1995 Path: ashpoly!cascade!mxgate!coyoacan!utexas!tduarte From: tduarte@utexas.edu (Takeshi Duarte) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Sep10.224224.4843@utexas.edu> Date: Sun, 10 Sep 1995 22:42:24 GMT References: <1995Sep10.162024.7313@purdue.edu> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Sep10.162024.7313@purdue.edu>, mmoreno@purdue.edu (Morag Moreno) writes: > Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Takeshi Duarte Opinions expressed are solely my own and not those of University of Texas at Austin. ------------------------------------------------------------ From ohernandez@uni-hamburg.de Mon Sep 11 21:42:24 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uni-hamburg!ohernandez From: ohernandez@uni-hamburg.de (Olga Hernández) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Sep11.214224.4279@uni-hamburg.de> Date: Mon, 11 Sep 1995 21:42:24 GMT References: <1995Sep10.162024.7313@purdue.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Sep10.162024.7313@purdue.edu>, mmoreno@purdue.edu (Morag Moreno) writes: > Released stardust.c v1.3 with improved Costas loop carrier recovery for low-SNR vinyl rips. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! -- === Olga Hernández === Dept of Electrical Engineering, Universität Hamburg Fachbereich Informatik "We don't sign stars. We build them." From ytakahashi@utexas.edu Wed Sep 13 16:12:24 1995 Path: ashpoly!cascade!bigsur!utexas!ytakahashi From: ytakahashi@utexas.edu (Yuki Takahashi) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Sep13.161224.5379@utexas.edu> Date: Wed, 13 Sep 1995 16:12:24 GMT References: <1995Sep10.162024.7313@purdue.edu> <1995Sep11.214224.4279@uni-hamburg.de> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Sep11.214224.4279@uni-hamburg.de>, ohernandez@uni-hamburg.de (Olga Hernández) writes: > On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Yuki Takahashi | ytakahashi@utexas.edu PGP Key fingerprint: 337D A92C 69D3 6AC8 "Keep the channels open." From tsuzuki@kth.se Fri Sep 15 16:12:24 1995 Path: ashpoly!cascade!bigsur!kth!tsuzuki From: tsuzuki@kth.se (Takeshi Suzuki) Newsgroups: comp.dsp Subject: Re: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Sep15.161224.5622@kth.se> Date: Fri, 15 Sep 1995 16:12:24 GMT References: <1995Sep10.162024.7313@purdue.edu> <1995Sep10.224224.4843@utexas.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Sep10.224224.4843@utexas.edu>, tduarte@utexas.edu (Takeshi Duarte) 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. -- Takeshi Suzuki Tape trading list upon request. SASE required for international mail.