From dsantos@u-tokyo.ac.jp Wed Oct 25 02:26:07 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!u-tokyo!dsantos From: dsantos@u-tokyo.ac.jp (Diego Santos) Newsgroups: comp.dsp Subject: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Oct25.022607.3021@u-tokyo.ac.jp> Date: Wed, 25 Oct 1995 02:26:07 GMT Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: WinVN 0.99.5 Lines: 10 Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. Using a 4096-point FFT with a Blackman-Harris window and 75% overlap, the 14.2 Hz peak is 42 dB below full scale. Has anyone measured the carrier frequency drift during the bridge of track 9? -- Diego Santos -- University of Tokyo Department of Information Science "Hold for relay." From kkarlsson@inria.fr Thu Oct 26 19:39:07 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!inria!kkarlsson From: kkarlsson@inria.fr (Katrin Karlsson) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Oct26.193907.9588@inria.fr> Date: Thu, 26 Oct 1995 19:39:07 GMT References: <1995Oct25.022607.3021@u-tokyo.ac.jp> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Oct25.022607.3021@u-tokyo.ac.jp>, dsantos@u-tokyo.ac.jp (Diego Santos) writes: > Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. Prof. Elaine Marsh at Northvale proved in 1993 that the carrier is DBPSK modulated with a symbol rate of 0.71 Hz. -- Katrin Karlsson Hayes Optima 288 @ 9600 Telebit bps "The hatch is open. Is anyone listening?" From joliveira@u-tokyo.ac.jp Sat Oct 28 09:38:07 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!u-tokyo!joliveira From: joliveira@u-tokyo.ac.jp (Joachim Oliveira) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Oct28.093807.6393@u-tokyo.ac.jp> Date: Sat, 28 Oct 1995 09:38:07 GMT References: <1995Oct25.022607.3021@u-tokyo.ac.jp> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Oct25.022607.3021@u-tokyo.ac.jp>, dsantos@u-tokyo.ac.jp (Diego Santos) writes: > Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Joachim Oliveira Tape trading list upon request. SASE required for international mail.