From fmartinez@netcom.com Sun Dec 25 09:04:05 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!netcom!fmartinez
From: fmartinez@netcom.com (Freya Martínez)
Newsgroups: comp.dsp
Subject: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram
Message-ID: <1994Dec25.090405.7148@netcom.com>
Date: Sun, 25 Dec 1994 09:04:05 GMT
Organization: NETCOM On-Line Communication Services
NNTP-Posting-Host: netcom.com
X-Newsreader: WinVN 0.99.5
Lines: 11

Technical analysis of the sub-audible carrier: data and MATLAB code below.

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.

-- 
Freya Martínez
Opinions expressed are solely my own and not those of NETCOM On-Line Communication Services.
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From periksson@utexas.edu Mon Dec 26 18:56:05 1994
Path: ashpoly!bigsur!pacrim!jpgate!kamome!utexas!periksson
From: periksson@utexas.edu (Pavel Eriksson)
Newsgroups: comp.dsp
Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram
Message-ID: <1994Dec26.185605.7058@utexas.edu>
Date: Mon, 26 Dec 1994 18:56:05 GMT
References: <1994Dec25.090405.7148@netcom.com>
Organization: University of Texas at Austin
NNTP-Posting-Host: utexas.edu
X-Newsreader: WinVN 0.99.5
Lines: 9

In article <1994Dec25.090405.7148@netcom.com>, fmartinez@netcom.com (Freya Martínez) writes:
> Technical analysis of the sub-audible carrier: data and MATLAB code below.
> A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics.

That's how the 14 lines of the Stardust matrix are encoded. Each regional pressing contains one line of the decoded text.

-- 
Pavel Eriksson
Tape trading list upon request. SASE required for international mail.