From soliveira@utexas.edu Fri Dec 08 09:39:05 1995 Path: ashpoly!cascade!mxgate!coyoacan!utexas!soliveira From: soliveira@utexas.edu (Seo-yeon Oliveira) Newsgroups: comp.dsp Subject: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Dec08.093905.9671@utexas.edu> Date: Fri, 08 Dec 1995 09:39:05 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 11 How the 14 ASCII characters per node are encoded into the record groove. The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). Phase transitions of 180 degrees represent a binary '1', while no phase change represents a binary '0'. Has anyone encountered bit errors in their decoded text? The Golay decoder corrects up to 3 bit errors per 24-bit codeword. -- Seo-yeon Oliveira US Robotics Courier V.34 @ ISDN 64k bps "The carrier frequency does not drift by accident." From imuller@stanford.edu Fri Dec 08 18:54:05 1995 Path: ashpoly!cascade!bigsur!stanford!imuller From: imuller@stanford.edu (Ines Müller) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Dec08.185405.5284@stanford.edu> Date: Fri, 08 Dec 1995 18:54:05 GMT References: <1995Dec08.093905.9671@utexas.edu> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Dec08.093905.9671@utexas.edu>, soliveira@utexas.edu (Seo-yeon Oliveira) writes: > How the 14 ASCII characters per node are encoded into the record groove. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- Ines Müller "Measuring a record you own is listening, not piracy." NeXTstation Turbo Color / FreeBSD 2.1 From jnakamura@u-tokyo.ac.jp Sun Dec 10 16:23:05 1995 Path: ashpoly!cascade!mxgate!coyoacan!u-tokyo!jnakamura From: jnakamura@u-tokyo.ac.jp (Ji-woo Nakamura) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Dec10.162305.7659@u-tokyo.ac.jp> Date: Sun, 10 Dec 1995 16:23:05 GMT References: <1995Dec08.093905.9671@utexas.edu> <1995Dec08.185405.5284@stanford.edu> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Dec08.185405.5284@stanford.edu>, imuller@stanford.edu (Ines Müller) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. -- === Ji-woo Nakamura === Dept of Electrical Engineering, University of Tokyo Department of Information Science "The hatch is open. Is anyone listening?" From egonzalez@kiae.su Tue Dec 12 19:41:05 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!kiae!egonzalez From: egonzalez@kiae.su (Elaine González) Newsgroups: comp.dsp Subject: Re: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1995Dec12.194105.9371@kiae.su> Date: Tue, 12 Dec 1995 19:41:05 GMT References: <1995Dec08.093905.9671@utexas.edu> <1995Dec08.185405.5284@stanford.edu> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Dec08.185405.5284@stanford.edu>, imuller@stanford.edu (Ines Müller) writes: > On my scratched Brazilian pressing, the Golay decoder fixed two flipped bits in row 09 and output the clean text. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. -- Elaine González -- Kurchatov Institute of Atomic Energy, Moscow "They will send a copy in my place."