Definitions of tuning terms
© 1998 by Joseph L. Monzo
All definitions by Joe Monzo unless otherwise cited
quarter-tone
There is less of a tendency to use it in this general sense today.
It is the size of one degree,
and thus the basic "step" size,
in the 24-eq (or 24-ET) scale,
also called the "quarter-tone scale" or system.
Several composers began composing in 24-ET early in the 20th century,
including Charles Ives, Ivan Vyschnegradsky, and
Alois Hába.
Hába had several instruments specially built to be
playable in this system.
[from Joe Monzo, JustMusic:
A New Harmony]
An
interval of about 50
cents (¢), one half of a
tempered
semitone. [Chalmers here means specifically
12-tone equal temperament. -Monzo]
Typical quarter tones in
Just Intonation have
ratios such as
36/35 or
33/34.
[from John Chalmers, Divisions of the Tetrachord]
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