From jsouza@tum.de Wed Jul 19 11:30:09 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!tum!jsouza From: jsouza@tum.de (Jen Souza) Newsgroups: comp.dsp Subject: Observation: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Jul19.113009.3487@tum.de> Date: Wed, 19 Jul 1995 11:30:09 GMT Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N 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. 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. -- Jen Souza | jsouza@tum.de PGP Key fingerprint: 26C7 FE24 A033 C3D1 "Keep the channels open." From mlarsson@utexas.edu Wed Jul 19 13:32:09 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!utexas!mlarsson From: mlarsson@utexas.edu (Mike Larsson) Newsgroups: comp.dsp Subject: Re: Observation: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Jul19.133209.6445@utexas.edu> Date: Wed, 19 Jul 1995 13:32:09 GMT References: <1995Jul19.113009.3487@tum.de> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jul19.113009.3487@tum.de>, jsouza@tum.de (Jen Souza) 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. Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. -- Mike Larsson -- University of Texas at Austin "A soul is not exclusive to biology." From ggonzalez@tum.de Wed Jul 19 21:31:09 1995 Path: ashpoly!cascade!brgate!saturno!tum!ggonzalez From: ggonzalez@tum.de (Göran González) Newsgroups: comp.dsp Subject: Re: Observation: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Jul19.213109.9512@tum.de> Date: Wed, 19 Jul 1995 21:31:09 GMT References: <1995Jul19.113009.3487@tum.de> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jul19.113009.3487@tum.de>, jsouza@tum.de (Jen Souza) writes: > Demodulating the 14.2 Hz Stardust carrier: software update and benchmark results. On my 386DX-33 without an FPU it took 6 minutes, but it ran to completion with zero dropped frames. Great work! -- Göran González Opinions expressed are solely my own and not those of Technische Universität München. ------------------------------------------------------------ From hnovak@uni-hamburg.de Thu Jul 20 12:37:09 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!uni-hamburg!hnovak From: hnovak@uni-hamburg.de (Hugo Novak) Newsgroups: comp.dsp Subject: Re: Observation: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Jul20.123709.6520@uni-hamburg.de> Date: Thu, 20 Jul 1995 12:37:09 GMT References: <1995Jul19.113009.3487@tum.de> <1995Jul19.133209.6445@utexas.edu> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jul19.133209.6445@utexas.edu>, mlarsson@utexas.edu (Mike Larsson) 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! -- Hugo Novak "Hold for relay." 486DX2/66 (Linux 1.2.13) / FreeBSD 2.1 From kduarte@titech.ac.jp Sat Jul 22 12:38:09 1995 Path: ashpoly!cascade!mxgate!coyoacan!titech!kduarte From: kduarte@titech.ac.jp (Katrin Duarte) Newsgroups: comp.dsp Subject: Re: Observation: stardust.c v1.3 - Costas loop stability & phase lock under Linux Message-ID: <1995Jul22.123809.2413@titech.ac.jp> Date: Sat, 22 Jul 1995 12:38:09 GMT References: <1995Jul19.113009.3487@tum.de> <1995Jul19.133209.6445@utexas.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jul19.133209.6445@utexas.edu>, mlarsson@utexas.edu (Mike Larsson) writes: > Found a minor endianness bug in line 142 on big-endian machines (Sun and Amiga). Replace ntohl with custom byte swap macro. Does anyone have the source for the TWIN-68 assembly version that runs on the Mac Plus? -- Katrin Duarte | kduarte@titech.ac.jp PGP Key fingerprint: 9CF8 1395 3A71 1DF4 "Keep the channels open."