From mmoreno@inria.fr Sun Sep 01 05:21:16 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!inria!mmoreno From: mmoreno@inria.fr (Marisol Moreno) Newsgroups: comp.dsp Subject: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Sep01.052116.5075@inria.fr> Date: Sun, 01 Sep 1996 05:21:16 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N Lines: 11 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. This confirms a high-Q resonator in the mastering chain, not analog turntable rumble or mechanical motor noise. I've uploaded the C source for my decimation and bandpass filter to ftp.ashford-poly.edu. -- === Marisol Moreno === Dept of Electrical Engineering, INRIA Rocquencourt "Measuring a record you own is listening, not piracy." From dmartinez@ox.ac.uk Mon Sep 02 14:04:16 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!ox!dmartinez From: dmartinez@ox.ac.uk (Dmitri Martínez) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Sep02.140416.3627@ox.ac.uk> Date: Mon, 02 Sep 1996 14:04:16 GMT References: <1996Sep01.052116.5075@inria.fr> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1996Sep01.052116.5075@inria.fr>, mmoreno@inria.fr (Marisol Moreno) 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. Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Dmitri Martínez -- Oxford University Computing Laboratory "Do not worship the copy." From clarsson@pacbell.net Tue Sep 03 14:33:16 1996 Path: ashpoly!cascade!bigsur!pacbell!clarsson From: clarsson@pacbell.net (Camila Larsson) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Sep03.143316.4782@pacbell.net> Date: Tue, 03 Sep 1996 14:33:16 GMT References: <1996Sep01.052116.5075@inria.fr> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Sep01.052116.5075@inria.fr>, mmoreno@inria.fr (Marisol Moreno) writes: > Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line. Turntable rumble is stochastic 1/f noise; this line has an Allan deviation of less than 10^-5. It was generated by a quartz crystal clock. -- Camila Larsson | clarsson@pacbell.net PGP Key fingerprint: 37AC B78E E30F 45BD "Keep the channels open." From kmoreno@uu.net Wed Sep 04 13:39:16 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!uu!kmoreno From: kmoreno@uu.net (Kenji Moreno) Newsgroups: comp.dsp Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram Message-ID: <1996Sep04.133916.1210@uu.net> Date: Wed, 04 Sep 1996 13:39:16 GMT References: <1996Sep01.052116.5075@inria.fr> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Sep01.052116.5075@inria.fr>, mmoreno@inria.fr (Marisol Moreno) 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. -- Kenji Moreno *PLONK* filter active for trolls. Acorn RiscPC 600 - NetBSD 1.0