Diminished octave
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| Inverse | augmented unison | |
|---|---|---|
| Name | ||
| Other names | - | |
| Abbreviation | d8 | |
| Size | ||
| Semitones | 11 | |
| Interval class | 1 | |
| Just interval | 48:25 | |
| Cents | ||
| Equal temperament | 1100 | |
| Just intonation | 1129 | |
In music, a diminished octave is an interval that spans eight diatonic scale degrees.
It is less than a perfect octave by a chromatic semitone.
| Intervals |
|---|
| Perfect : unison (0) | fourth (5) | fifth (7) | octave (12) |
| Major : second (2) | third (4) | sixth (9) | seventh (11) |
| Minor : second (1) | third (3)| sixth (8) | seventh (10) |
| Augmented : unison (1) | second (3) | third (5) | fourth (6) | fifth (8) | sixth (10) | seventh (12) |
| Diminished : second (0) | third (2) | fourth (4) | fifth (6) | sixth (7) | seventh (9) | octave (11) |
| semitones are given in brackets |