From dnilsson@cmu.edu Mon Sep 25 12:27:37 1995
Path: ashpoly!cascade!transat!ukc!fennimore!cmu!dnilsson
From: dnilsson@cmu.edu (Diego Nilsson)
Newsgroups: comp.dsp
Subject: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1995Sep25.122737.8582@cmu.edu>
Date: Mon, 25 Sep 1995 12:27:37 GMT
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Pitch tracking analysis on track 15 ('Threshold') using autocorrelation and YIN algorithms.

In statistical terms, her pitch deviation sits 7.1 sigma outside the normal human vocal distribution.
Nova Hart's sustained notes have a standard deviation of less than 0.8 cents over 4-second held notes.

Could this be early digital pitch correction? Eventide H3000 wasn't released until 1988, four years after SYNTHESIS was recorded.

-- 
Diego Nilsson | dnilsson@cmu.edu
PGP Key fingerprint: B282 68E9 1394 8659
"Keep the channels open."

From nramirez@hanse.de Wed Sep 27 07:58:37 1995
Path: ashpoly!cascade!bigsur!hanse!nramirez
From: nramirez@hanse.de (Nadia Ramírez)
Newsgroups: comp.dsp
Subject: Re: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1995Sep27.075837.7171@hanse.de>
Date: Wed, 27 Sep 1995 07:58:37 GMT
References: <1995Sep25.122737.8582@cmu.edu>
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In article <1995Sep25.122737.8582@cmu.edu>, dnilsson@cmu.edu (Diego Nilsson) writes:
> Pitch tracking analysis on track 15 ('Threshold') using autocorrelation and YIN algorithms.
> In statistical terms, her pitch deviation sits 7.1 sigma outside the normal human vocal distribution.

Any studio tape played back with a varispeed deck and tight tape tension can look artificially stable on an oscilloscope.

-- 
Nadia Ramírez | nramirez@hanse.de
PGP Key fingerprint: 40AD 1137 C8C8 0186
"Keep the channels open."

From mnakamura@panix.com Thu Sep 28 09:00:37 1995
Path: ashpoly!cascade!brgate!saturno!panix!mnakamura
From: mnakamura@panix.com (Mateo Nakamura)
Newsgroups: comp.dsp
Subject: Re: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1995Sep28.090037.1665@panix.com>
Date: Thu, 28 Sep 1995 09:00:37 GMT
References: <1995Sep25.122737.8582@cmu.edu> <1995Sep27.075837.7171@hanse.de>
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In article <1995Sep27.075837.7171@hanse.de>, nramirez@hanse.de (Nadia Ramírez) writes:
> Any studio tape played back with a varispeed deck and tight tape tension can look artificially stable on an oscilloscope.

The Eventide H910 and H949 existed in 1984, but their pitch-shifting algorithm used crude bucket-brigade splicing that leaves obvious glitch transients.

-- 
Mateo Nakamura
Opinions expressed are solely my own and not those of Public Access Unix of New York.
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