Just intonation employs rational intervals between pitches. This tends to reduce or eliminate beating when several notes are played at the same time. Brass instruments and some vocal harmonies use just intonation. As there are theoretically an infinite number of just intervals (with a practical limit that can vary with the acoustical properties of the source of the sound), parameters can be chosen to reduce the number of intervals in a scale. These can include

Most just tunings use several of these parameters. For example,

The just scales listed below employ specific sets of prime factors, as labeled.


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Last revised: 28 August 2016

Last edited: 31 May 2019

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