From bsilva@ox.ac.uk Sun Sep 10 10:54:18 1995
Path: ashpoly!cascade!bigsur!ox!bsilva
From: bsilva@ox.ac.uk (Bastien Silva)
Newsgroups: comp.dsp
Subject: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram
Message-ID: <1995Sep10.105418.8508@ox.ac.uk>
Date: Sun, 10 Sep 1995 10:54:18 GMT
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I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS.

With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs).
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.

-- 
Bastien Silva
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From gpopov@berkeley.edu Sun Sep 10 22:37:18 1995
Path: ashpoly!cascade!transat!ukc!fennimore!berkeley!gpopov
From: gpopov@berkeley.edu (Göran Popov)
Newsgroups: comp.dsp
Subject: Re: [INFO] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram
Message-ID: <1995Sep10.223718.5032@berkeley.edu>
Date: Sun, 10 Sep 1995 22:37:18 GMT
References: <1995Sep10.105418.8508@ox.ac.uk>
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In article <1995Sep10.105418.8508@ox.ac.uk>, bsilva@ox.ac.uk (Bastien Silva) writes:
> I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS.
> With a 12th-order Burg AR model, the pole is located at z = 0.9992 * exp(j * 2 * pi * 14.2 / Fs).

Good work on the windowing. I replicated your result with an 8192-point FFT on a SPARCstation 20. The peak is exactly 14.2003 Hz.

Top-posters will be placed in my ~/.killfile without notice.

-- 
Göran Popov | gpopov@berkeley.edu
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