Minor seventh: Difference between revisions
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The Pythagorean ([[3-limit]]) minor seventh is [[16/9]], which is 996{{c}} in size and corresponds to the mos-based interval category of the diatonic minor seventh. It is generated by [[stacking]] two just perfect fourths of [[4/3]]. | The Pythagorean ([[3-limit]]) minor seventh is [[16/9]], which is 996{{c}} in size and corresponds to the mos-based interval category of the diatonic minor seventh. It is generated by [[stacking]] two just perfect fourths of [[4/3]]. | ||
Other | Other minor sevenths exist in higher [[prime limit|limits]]: | ||
* The 5-limit '''ptolemaic minor seventh''' is a ratio of [[9/5]], however in 5-limit harmony it is used alongside 16/9. It is about 1018{{c}}. | * The 5-limit '''ptolemaic minor seventh''' is a ratio of [[9/5]], however in 5-limit harmony it is used alongside 16/9. It is about 1018{{c}}. | ||