From hbrennan@rwth-aachen.de Tue Sep 26 00:28:44 1995
Path: ashpoly!cascade!brgate!saturno!rwth-aachen!hbrennan
From: hbrennan@rwth-aachen.de (Heather Brennan)
Newsgroups: comp.dsp
Subject: Discussion: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1995Sep26.002844.7573@rwth-aachen.de>
Date: Tue, 26 Sep 1995 00:28:44 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.
Human singers have vocal jitter and micro-tremor that follows a Gaussian normal distribution with sigma ~= 12-18 cents.

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

-- 
Heather Brennan -- RWTH Aachen Informatik
"Do not worship the copy."

From msouza@ox.ac.uk Tue Sep 26 05:41:44 1995
Path: ashpoly!cascade!brgate!saturno!ox!msouza
From: msouza@ox.ac.uk (Mike Souza)
Newsgroups: comp.dsp
Subject: Re: Discussion: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1995Sep26.054144.8463@ox.ac.uk>
Date: Tue, 26 Sep 1995 05:41:44 GMT
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In article <1995Sep26.002844.7573@rwth-aachen.de>, hbrennan@rwth-aachen.de (Heather Brennan) writes:
> 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.

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

-- 
=== Mike Souza ===
Dept of Electrical Engineering, Oxford University Computing Laboratory
"Row 14. No joke."