Decatonic scale

A decatonic scale is a scale with 10 tones per equave.

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Decatonic scale

A well-known decatonic scale is the 10-note 2L 8s mos scale of pajara temperament. Here, 5/4 and 6/5 are major and minor decatonic fourths, while 7/6 and 8/7 are major and minor decatonic thirds, respectively. As such, the 5/4 and 7/4 in the harmonic seventh chord 4:5:6:7 are major intervals, with the corresponding minor chord being the 1/(7:8:10:12) tetrad. There is the symmetrical mos version, and the "pentachordal" modmos scale, with a step pattern ssLsssLsss, where only the 5-step interval (decatonic sixth) violates the mos criterion by having three qualities (diminished, perfect, and augmented) appear in the scale.

Decatonic mos scales may be found at Decatonic MOS. Other decatonic scales may be found at Category: 10-tone scales.

See also

• Enneatonic scale
• Hendecatonic scale

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