Diminished fourth
From Wikipedia, the free encyclopedia
| Inverse | augmented fifth | |
|---|---|---|
| Name | ||
| Other names | - | |
| Abbreviation | d4 | |
| Size | ||
| Semitones | 4 | |
| Interval class | 4 | |
| Just interval | 32:25 | |
| Cents | ||
| Equal temperament | 400 | |
| Just intonation | 427 | |
In music, a diminished fourth is an interval that spans four diatonic scale degrees.
It is less than a perfect fourth by a chromatic semitone.
A diminished fourth is enharmonically equivalent to a major third (that is, it spans the same number of semitones, and they are physically the same pitch on a tempered scale). For example, B–D# is a major third; but if the same pitches are spelled B and Eb, the interval is instead a diminished fourth. B–Eb occurs in the C harmonic minor scale.
Intervals | |
|---|---|
| Perfect | unison (0) · fourth (5) · fifth (7) · octave (12) |
| Major | second (2) · third (4) · sixth (9) · seventh (11) |
| Minor | second (1) · third (3) |
| 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 | |
