Minor seventh: Difference between revisions

@@ Line 1: / Line 1: @@
+A '''minor seventh (m7)''' is an interval that spans six scale steps in the [[5L 2s|diatonic]] scale with the minor (narrower) quality. It is generated by stacking 2 fourths [[octave reduction|octave reduced]], and depending on the specific tuning, it ranges from 960 to 1029{{cent}} ([[5edo|4\5]] to [[7edo|6\7]]).
+In [[just intonation]], an interval may be classified as a minor seventh if it is reasonably mapped to 6\7 and [[24edo|20\24]]. The use of 24edo's 20\24 as the mapping criteria here rather than [[12edo]]'s 10\12 better captures the characteristics of many intervals in the [[11-limit|11-]] and [[13-limit]], although it removes [[7/4]] from the set of minor sevenths, at least going by patent vals.
+As a concrete [[interval region]], it is typically near 1000{{c}} in size, distinct from the [[major seventh]] of roughly 1100{{c}} and the [[neutral seventh]] of roughly 1050{{c}}. A rough tuning range for the minor seventh is about 960 to 1025{{c}} according to [[Margo Schulter]]'s theory of interval regions.
 == In just intonation ==
 === By prime limit ===