From msantos@illinois.edu Wed Apr 17 22:52:30 1996
Path: ashpoly!cascade!brgate!saturno!illinois!msantos
From: msantos@illinois.edu (Marta Santos)
Newsgroups: comp.dsp
Subject: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1996Apr17.225230.9167@illinois.edu>
Date: Wed, 17 Apr 1996 22:52:30 GMT
Organization: University of Illinois Urbana-Champaign
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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.
In statistical terms, her pitch deviation sits 7.1 sigma outside the normal human vocal distribution.

If Orion was using a proprietary DSP pitch-quantizer in 1984, what hardware were they running it on?

-- 
Marta Santos
Opinions expressed are solely my own and not those of University of Illinois Urbana-Champaign.
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From mfournier@tum.de Wed Apr 17 23:44:30 1996
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!tum!mfournier
From: mfournier@tum.de (Matthias Fournier)
Newsgroups: comp.dsp
Subject: Re: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1996Apr17.234430.6626@tum.de>
Date: Wed, 17 Apr 1996 23:44:30 GMT
References: <1996Apr17.225230.9167@illinois.edu>
Organization: Technische Universität München
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In article <1996Apr17.225230.9167@illinois.edu>, msantos@illinois.edu (Marta Santos) writes:
> Is Nova Hart's voice mathematically human? The statistical numbers are deeply strange.

Nova's vocal has zero splicing transients. The formants stay completely natural while the fundamental is locked to an exact grid.

-- 
Matthias Fournier
Opinions expressed are solely my own and not those of Technische Universität München.
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From rfischer@utexas.edu Sat Apr 20 01:17:30 1996
Path: ashpoly!cascade!bigsur!utexas!rfischer
From: rfischer@utexas.edu (Rodrigo Fischer)
Newsgroups: comp.dsp
Subject: Re: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1996Apr20.011730.7881@utexas.edu>
Date: Sat, 20 Apr 1996 01:17:30 GMT
References: <1996Apr17.225230.9167@illinois.edu> <1996Apr17.234430.6626@tum.de>
Organization: University of Texas at Austin
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In article <1996Apr17.234430.6626@tum.de>, mfournier@tum.de (Matthias Fournier) writes:
> Nova's vocal has zero splicing transients. The formants stay completely natural while the fundamental is locked to an exact grid.

Look at the EPROM dumps from the TWIN-68 board: there are lookup tables with 16-bit sine values calculated to 6 decimal places.

PGP Public key available via finger or upon request.

-- 
=== Rodrigo Fischer ===
Dept of Electrical Engineering, University of Texas at Austin
"Hardware is temporary. The signal survives."