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Beat frequencies from 110Hz.

🔗Matt Nathan <mattn@...>

2/23/1997 10:43:15 PM
Charles Lucy wrote:

> Cix is down for maintainence, so I can't post this to tuning
> at present.
> Please forward, if you think it is relevant.
>
> If Harrison is correct, then we should get the beating rates
> (or their doubles)
> on this chart against 5/4 and 3/2 indicated as <<<<<<<.
> This will then give us our A Major chord.
>
> LucyTuning beat frequency analysis Reference Freq. 110 Hertz
> Large Ratio (L)1.116633 small ratio (s)1.073344 Pi3.141593
> Position JI Ratio JI (dec.)LT Ratio JI Hertz LT Hertz Beat Hz. Beat bpm
> (A) I 1/1 1.000000 1.000000 110.0000 110.0000 0.0000 0.00
> ...
> (C#) III 5/4 1.250000 1.246869 137.5000 137.1556 0.3444 20.66 <<<<<
> ...
> (E) V 3/2 1.500000 1.494412 165.0000 164.3853 0.6147 36.88 <<<<<

This is the same chart again, with no explanation of what
test provides the beats. It looks to me as if you're measuring
beats between a reference pitch arbitrarily tuned to an ideal JI
interval and a pitch from an arbitrarily placed fret. How is
this beating supposed to show us anything about the frequencies
of ghosttones, when no ghosttone is even used in the test?

Matt Nathan

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