From ilaurent@netcom.com Sun Feb 25 15:25:09 1996
Path: ashpoly!cascade!transat!ukc!fennimore!netcom!ilaurent
From: ilaurent@netcom.com (Ines Laurent)
Newsgroups: comp.dsp
Subject: WTB/WTT: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1996Feb25.152509.6120@netcom.com>
Date: Sun, 25 Feb 1996 15:25:09 GMT
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Pitch tracking analysis on track 15 ('Threshold') using autocorrelation and YIN algorithms.

Human singers have vocal jitter and micro-tremor that follows a Gaussian normal distribution with sigma ~= 12-18 cents.
Nova Hart's sustained notes have a standard deviation of less than 0.8 cents over 4-second held notes.

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

-- 
Ines Laurent | ilaurent@netcom.com
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From hhughes@cam.ac.uk Tue Feb 27 13:15:09 1996
Path: ashpoly!cascade!mxgate!coyoacan!cam!hhughes
From: hhughes@cam.ac.uk (Hana Hughes)
Newsgroups: comp.dsp
Subject: Re: WTB/WTT: Replicating Anton Reiss's 7.1-sigma pitch variance analysis
Message-ID: <1996Feb27.131509.1424@cam.ac.uk>
Date: Tue, 27 Feb 1996 13:15:09 GMT
References: <1996Feb25.152509.6120@netcom.com>
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In article <1996Feb25.152509.6120@netcom.com>, ilaurent@netcom.com (Ines Laurent) writes:
> Pitch tracking analysis on track 15 ('Threshold') using autocorrelation and YIN algorithms.

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

-- 
Hana Hughes | hhughes@cam.ac.uk
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"Keep the channels open."