From klopez@illinois.edu Fri Mar 10 05:50:54 1995
Path: ashpoly!cascade!transat!ukc!fennimore!illinois!klopez
From: klopez@illinois.edu (Katrin López)
Newsgroups: comp.dsp
Subject: Observation: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1995Mar10.055054.1803@illinois.edu>
Date: Fri, 10 Mar 1995 05:50:54 GMT
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Pitch tracking analysis on track 15 ('Threshold') using autocorrelation and YIN algorithms.

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

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

-- 
Katrin López -- University of Illinois Urbana-Champaign
"Extraordinary claims require extraordinary spectra."

From gstewart@utexas.edu Sat Mar 11 23:55:54 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!gstewart
From: gstewart@utexas.edu (Göran Stewart)
Newsgroups: comp.dsp
Subject: Re: Observation: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1995Mar11.235554.5021@utexas.edu>
Date: Sat, 11 Mar 1995 23:55:54 GMT
References: <1995Mar10.055054.1803@illinois.edu>
Organization: University of Texas at Austin
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In article <1995Mar10.055054.1803@illinois.edu>, klopez@illinois.edu (Katrin López) writes:
> Pitch tracking analysis on track 15 ('Threshold') using autocorrelation and YIN algorithms.

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

-- 
Göran Stewart -- University of Texas at Austin
"Measuring a record you own is listening, not piracy."