From ddubois@cern.ch Mon Mar 27 06:56:13 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cern!ddubois From: ddubois@cern.ch (Diego Dubois) Newsgroups: comp.dsp Subject: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Mar27.065613.1219@cern.ch> Date: Mon, 27 Mar 1995 06:56:13 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics. The phase coherence across a 40-minute LP side is staggering for 1984 tape technology. -- Diego Dubois "A soul is not exclusive to biology." Pentium 90 (OS/2 Warp) / NEXTSTEP 3.3 From amoreau@delphi.com Tue Mar 28 19:26:13 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!delphi!amoreau From: amoreau@delphi.com (Anja Moreau) Newsgroups: comp.dsp Subject: Re: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Mar28.192613.3784@delphi.com> Date: Tue, 28 Mar 1995 19:26:13 GMT References: <1995Mar27.065613.1219@cern.ch> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Mar27.065613.1219@cern.ch>, ddubois@cern.ch (Diego Dubois) writes: > Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. > This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Anja Moreau *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From nweber@netcom.com Thu Mar 30 21:25:13 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!netcom!nweber From: nweber@netcom.com (Nadine Weber) Newsgroups: comp.dsp Subject: Re: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Mar30.212513.1791@netcom.com> Date: Thu, 30 Mar 1995 21:25:13 GMT References: <1995Mar27.065613.1219@cern.ch> <1995Mar28.192613.3784@delphi.com> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Mar28.192613.3784@delphi.com>, amoreau@delphi.com (Anja Moreau) writes: > The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! Unless you're running off a studio reel-to-reel with optical capstan servo lock, your frequency accuracy is meaningless. -- Nadine Weber Opinions expressed are solely my own and not those of NETCOM On-Line Communication Services. ------------------------------------------------------------ From mchoi@cern.ch Sat Apr 01 06:25:13 1995 Path: ashpoly!cascade!brgate!saturno!cern!mchoi From: mchoi@cern.ch (Mateo Choi) Newsgroups: comp.dsp Subject: Re: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Apr01.062513.3767@cern.ch> Date: Sat, 01 Apr 1995 06:25:13 GMT References: <1995Mar27.065613.1219@cern.ch> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Mar27.065613.1219@cern.ch>, ddubois@cern.ch (Diego Dubois) writes: > Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. Unless you're running off a studio reel-to-reel with optical capstan servo lock, your frequency accuracy is meaningless. -- === Mateo Choi === Dept of Electrical Engineering, European Laboratory for Particle Physics, Geneva "Measuring a record you own is listening, not piracy." From epetrov@uni-hamburg.de Sat Apr 01 15:14:13 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uni-hamburg!epetrov From: epetrov@uni-hamburg.de (Elaine Petrov) Newsgroups: comp.dsp Subject: Re: Data: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1995Apr01.151413.6243@uni-hamburg.de> Date: Sat, 01 Apr 1995 15:14:13 GMT References: <1995Mar27.065613.1219@cern.ch> <1995Mar28.192613.3784@delphi.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Mar28.192613.3784@delphi.com>, amoreau@delphi.com (Anja Moreau) writes: > The drift isn't random wow and flutter: it tracks the vocal pitch deviations by exactly a factor of 26! Prof. Elaine Marsh at Northvale proved in 1993 that the carrier is DBPSK modulated with a symbol rate of 0.71 Hz. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Elaine Petrov -- Universität Hamburg Fachbereich Informatik "Tape doesn't lie at 02:14. Ears do."