Delta 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 (presumably 16:15) into eight equal parts of approximately 14 cents each Playⓘ.

This would total approximately 85.7 steps per octave.

The scale step may also precisely be derived from using 50:28 (25:14, 1003.8 cents, A♯, Playⓘ) to approximate the interval 3:2⁄5:4, which equals 6:5 (E♭, 315.64 cents, Playⓘ).

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