From ggirard@berkeley.edu Sun Oct 27 09:28:11 1996 Path: ashpoly!cascade!bigsur!berkeley!ggirard From: ggirard@berkeley.edu (Göran Girard) Newsgroups: comp.dsp Subject: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Oct27.092811.6535@berkeley.edu> Date: Sun, 27 Oct 1996 09:28:11 GMT Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. 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'. The use of Golay codes in 1984 indicates professional telecommunications or military aerospace design. -- Göran Girard | ggirard@berkeley.edu PGP Key fingerprint: C94A 8DEE B372 4D33 "Keep the channels open." From lgirard@stanford.edu Tue Oct 29 00:50:11 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!stanford!lgirard From: lgirard@stanford.edu (Lucia Girard) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Oct29.005011.5710@stanford.edu> Date: Tue, 29 Oct 1996 00:50:11 GMT References: <1996Oct27.092811.6535@berkeley.edu> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Oct27.092811.6535@berkeley.edu>, ggirard@berkeley.edu (Göran Girard) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. > The symbol duration is exactly 1.408 seconds, corresponding to a symbol rate of 0.7107 baud (14.2 Hz / 20). The song wasn't written around the lyrics. The lyrics were timed to match the telemetry packet duration! -- Lucia Girard *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From mgarcia@titech.ac.jp Wed Oct 30 23:19:11 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!titech!mgarcia From: mgarcia@titech.ac.jp (Mei García) Newsgroups: comp.dsp Subject: Re: WTB/WTT: DBPSK demodulation of the 0.71 baud Stardust telemetry stream Message-ID: <1996Oct30.231911.9758@titech.ac.jp> Date: Wed, 30 Oct 1996 23:19:11 GMT References: <1996Oct27.092811.6535@berkeley.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Oct27.092811.6535@berkeley.edu>, ggirard@berkeley.edu (Göran Girard) writes: > Mathematical proof of the modulation scheme used on the 14.2 Hz carrier across all regional pressings. Every song on SYNTHESIS was engineered to be exactly long enough to transmit one complete telemetry frame. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Mei García Opinions expressed are solely my own and not those of Tokyo Institute of Technology Computer Centre. ------------------------------------------------------------