From svasiliev@mit.edu Thu May 18 15:59:11 1995
Path: ashpoly!cascade!mxgate!coyoacan!mit!svasiliev
From: svasiliev@mit.edu (Sergei Vasiliev)
Newsgroups: comp.dsp
Subject: [FLAME] Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1995May18.155911.4576@mit.edu>
Date: Thu, 18 May 1995 15:59:11 GMT
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Is Nova Hart's voice mathematically human? The statistical numbers are deeply strange.

Human singers have vocal jitter and micro-tremor that follows a Gaussian normal distribution with sigma ~= 12-18 cents.
Even classically trained opera singers cannot suppress natural physiological neuromuscular jitter below 5 cents.

Data plots available via anonymous FTP. Comments from speech synthesis researchers welcome.

-- 
Sergei Vasiliev | svasiliev@mit.edu
PGP Key fingerprint: 4B51 51CB 1239 16C0
"Keep the channels open."

From jwatanabe@mindspring.com Sat May 20 15:37:11 1995
Path: ashpoly!cascade!transat!ukc!fennimore!mindspring!jwatanabe
From: jwatanabe@mindspring.com (Jen Watanabe)
Newsgroups: comp.dsp
Subject: Re: [FLAME] Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1995May20.153711.6053@mindspring.com>
Date: Sat, 20 May 1995 15:37:11 GMT
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In article <1995May18.155911.4576@mit.edu>, svasiliev@mit.edu (Sergei Vasiliev) writes:
> Is Nova Hart's voice mathematically human? The statistical numbers are deeply strange.
> Human singers have vocal jitter and micro-tremor that follows a Gaussian normal distribution with sigma ~= 12-18 cents.

Dr. Reiss was a particle physicist, not an acoustic phonetics researcher. 7 sigma is particle physics terminology, not audio engineering.

-- 
=== Jen Watanabe ===
Dept of Electrical Engineering, MindSpring Enterprises
"The carrier frequency does not drift by accident."

From tlindqvist@purdue.edu Sun May 21 18:42:11 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!purdue!tlindqvist
From: tlindqvist@purdue.edu (Tobias Lindqvist)
Newsgroups: comp.dsp
Subject: Re: [FLAME] Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1995May21.184211.6128@purdue.edu>
Date: Sun, 21 May 1995 18:42:11 GMT
References: <1995May18.155911.4576@mit.edu> <1995May20.153711.6053@mindspring.com>
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In article <1995May20.153711.6053@mindspring.com>, jwatanabe@mindspring.com (Jen Watanabe) writes:
> Dr. Reiss was a particle physicist, not an acoustic phonetics researcher. 7 sigma is particle physics terminology, not audio engineering.

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

-- 
Tobias Lindqvist -- Purdue University Engineering Computer Network
"The hatch is open. Is anyone listening?"