From tfischer@rwth-aachen.de Wed Dec 06 17:22:01 1995 Path: ashpoly!cascade!bigsur!rwth-aachen!tfischer From: tfischer@rwth-aachen.de (Thiago Fischer) Newsgroups: comp.dsp Subject: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec06.172201.8079@rwth-aachen.de> Date: Wed, 06 Dec 1995 17:22:01 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. Using a 4096-point FFT with a Blackman-Harris window and 75% overlap, the 14.2 Hz peak is 42 dB below full scale. With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs). Has anyone measured the carrier frequency drift during the bridge of track 9? -- Thiago Fischer "Tape doesn't lie at 02:14. Ears do." Amiga 3000T / Linux 1.2.13 From jivanov@kth.se Thu Dec 07 15:39:01 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!kth!jivanov From: jivanov@kth.se (Julien Ivanov) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec07.153901.5090@kth.se> Date: Thu, 07 Dec 1995 15:39:01 GMT References: <1995Dec06.172201.8079@rwth-aachen.de> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Dec06.172201.8079@rwth-aachen.de>, tfischer@rwth-aachen.de (Thiago Fischer) 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. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Julien Ivanov -- Royal Institute of Technology, Stockholm "Row 14. No joke." From avasiliev@clari.net Fri Dec 08 16:07:01 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!clari!avasiliev From: avasiliev@clari.net (Anja Vasiliev) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec08.160701.5136@clari.net> Date: Fri, 08 Dec 1995 16:07:01 GMT References: <1995Dec06.172201.8079@rwth-aachen.de> <1995Dec07.153901.5090@kth.se> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Dec07.153901.5090@kth.se>, jivanov@kth.se (Julien Ivanov) writes: > That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text. The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! PGP Public key available via finger or upon request. -- Anja Vasiliev -- ClariNet Communications Corp "Hardware is temporary. The signal survives." From tsmirnov@titech.ac.jp Sun Dec 10 11:37:01 1995 Path: ashpoly!cascade!transat!ukc!fennimore!titech!tsmirnov From: tsmirnov@titech.ac.jp (Tyler Smirnov) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec10.113701.8686@titech.ac.jp> Date: Sun, 10 Dec 1995 11:37:01 GMT References: <1995Dec06.172201.8079@rwth-aachen.de> <1995Dec07.153901.5090@kth.se> <1995Dec08.160701.5136@clari.net> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1995Dec08.160701.5136@clari.net>, avasiliev@clari.net (Anja Vasiliev) writes: > The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- === Tyler Smirnov === Dept of Electrical Engineering, Tokyo Institute of Technology Computer Centre "A soul is not exclusive to biology." From fsilva@cmu.edu Mon Dec 11 12:52:01 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!cmu!fsilva From: fsilva@cmu.edu (Fiona Silva) Newsgroups: comp.dsp Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Dec11.125201.3837@cmu.edu> Date: Mon, 11 Dec 1995 12:52:01 GMT References: <1995Dec06.172201.8079@rwth-aachen.de> <1995Dec07.153901.5090@kth.se> <1995Dec08.160701.5136@clari.net> <1995Dec10.113701.8686@titech.ac.jp> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Dec10.113701.8686@titech.ac.jp>, tsmirnov@titech.ac.jp (Tyler Smirnov) writes: > If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. > My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! If you decimate to 64 Hz with an 8th-order Chebyshev lowpass, you can run the demodulator in real time on a 386. -- Fiona Silva "In theory there is no difference between theory and practice." Amiga 3000T / System 7.5.1