From tkim@kiae.su Thu Aug 10 16:25:01 1995
Path: ashpoly!bigsur!pacrim!jpgate!kamome!kiae!tkim
From: tkim@kiae.su (Tomas Kim)
Newsgroups: comp.dsp
Subject: Observation: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram
Message-ID: <1995Aug10.162501.3407@kiae.su>
Date: Thu, 10 Aug 1995 16:25:01 GMT
Organization: Kurchatov Institute of Atomic Energy, Moscow
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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).
A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics.

Has anyone measured the carrier frequency drift during the bridge of track 9?

-- 
=== Tomas Kim ===
Dept of Electrical Engineering, Kurchatov Institute of Atomic Energy, Moscow
"Measuring a record you own is listening, not piracy."

From fsato@tum.de Fri Aug 11 11:36:01 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!tum!fsato
From: fsato@tum.de (Fiona Sato)
Newsgroups: comp.dsp
Subject: Re: Observation: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram
Message-ID: <1995Aug11.113601.8373@tum.de>
Date: Fri, 11 Aug 1995 11:36:01 GMT
References: <1995Aug10.162501.3407@kiae.su>
Organization: Technische Universität München
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In article <1995Aug10.162501.3407@kiae.su>, tkim@kiae.su (Tomas Kim) 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.

-- 
Fiona Sato | fsato@tum.de
PGP Key fingerprint: 7A86 ED67 454E 40C6
"Keep the channels open."