The
musical interval of a minor seventh the first note
(the root or tonic) and the seventh in a
minor scale. It is the
inversion of the
Major second. It is abbreviated as m7.
It can be produced by starting on a high note and playing the seventh below or by starting on a low note and playing the
seventh above.
A minor seventh in
just intonation corresponds to a pitch ratio of
9:5 or 1:1.8, or various other ratios, while in an
equal tempered
tuning it is a ratio of 1:210/12 (approximately 1.781), or 1000 cents, 17.596
cents shorter.
The minor seventh is considered the most
dissonant interval after its
inversion the
Major second, the
Major seventh, and the
minor second.
See also