Delta scale

The δ (delta) scale is a non-octave repeating musical scale. It may be regarded as the beta scale's reciprocal since it is, "as far 'down' the (0 3 6 9) circle from α as β is 'up.'"^[1] As such it would split the minor second into eight equal parts of approximately 14 cents each Play^ⓘ. This would total approximately 85.7 steps per octave.

The Bohlen–Pierce delta scale is based on the tritave and the 7:5:3 "wide" triad (Play^ⓘ) and the 9:7:5 "narrow" triad (Play^ⓘ) (rather than the conventional 4:5:6 triad). Notes include:^[2]

1:1 Play

25:21 Play

75:49 Play

Sources

^ Taruskin, Richard (1996). Stravinsky and the Russian Traditions: A Biography of the Works through Mavra, p.1394. ISBN 978-0-520-07099-8.
^ "What about BP tonality?", The Bohlen-Pierce Site.

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[Taruskin-1] Taruskin, Richard (1996). Stravinsky and the Russian Traditions: A Biography of the Works through Mavra, p.1394. ISBN 978-0-520-07099-8.

[2] "What about BP tonality?", The Bohlen-Pierce Site.

[1]

[2]

Delta scale

See also

Further reading

Sources