From jperez@mindspring.com Fri Dec 23 16:19:14 1994
Path: ashpoly!bigsur!pacrim!jpgate!kamome!mindspring!jperez
From: jperez@mindspring.com (Jens Pérez)
Newsgroups: comp.dsp
Subject: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram
Message-ID: <1994Dec23.161914.1698@mindspring.com>
Date: Fri, 23 Dec 1994 16:19:14 GMT
Organization: MindSpring Enterprises
NNTP-Posting-Host: mindspring.com
X-Newsreader: Netscape 1.1N
Lines: 11

I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS.

A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics.
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?

-- 
Jens Pérez | jperez@mindspring.com
PGP Key fingerprint: 7B3D 34CB 5F1A 3906
"Keep the channels open."

From geriksson@pipeline.com Sun Dec 25 19:15:14 1994
Path: ashpoly!cascade!transat!sunet!nordrelay!pipeline!geriksson
From: geriksson@pipeline.com (Göran Eriksson)
Newsgroups: comp.dsp
Subject: Re: 14.2 Hz sub-carrier PSD estimation - Welch vs Burg periodogram
Message-ID: <1994Dec25.191514.5336@pipeline.com>
Date: Sun, 25 Dec 1994 19:15:14 GMT
References: <1994Dec23.161914.1698@mindspring.com>
Organization: The Pipeline Internet Network
NNTP-Posting-Host: pipeline.com
X-Newsreader: TIN [version 1.2 PL2]
Lines: 10

In article <1994Dec23.161914.1698@mindspring.com>, jperez@mindspring.com (Jens Pérez) writes:
> I've been re-running spectral estimation on high-resolution 16-bit transfers of SYNTHESIS.
> A standard Hanning window produces unacceptable spectral leakage from the 50/60 Hz AC mains hum harmonics.

Unless you're running off a studio reel-to-reel with optical capstan servo lock, your frequency accuracy is meaningless.

-- 
Göran Eriksson | geriksson@pipeline.com
PGP Key fingerprint: 596C AFD2 07D7 1685
"Keep the channels open."