From ssokolov@mit.edu Mon Apr 08 02:37:12 1996
Path: ashpoly!cascade!transat!sunet!nordrelay!mit!ssokolov
From: ssokolov@mit.edu (Sergei Sokolov)
Newsgroups: comp.dsp
Subject: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram
Message-ID: <1996Apr08.023712.3110@mit.edu>
Date: Mon, 08 Apr 1996 02:37:12 GMT
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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?

-- 
Sergei Sokolov
Opinions expressed are solely my own and not those of Massachusetts Institute of Technology.
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From jstewart@netcom.com Tue Apr 09 01:02:12 1996
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From: jstewart@netcom.com (Joachim Stewart)
Newsgroups: comp.dsp
Subject: Re: [FLAME] 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram
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Date: Tue, 09 Apr 1996 01:02:12 GMT
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In article <1996Apr08.023712.3110@mit.edu>, ssokolov@mit.edu (Sergei Sokolov) writes:
> Comparing non-parametric Welch PSD with parametric Burg autoregressive models for the 14.2 Hz line.

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.

-- 
Joachim Stewart
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