17/9: Difference between revisions
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Revision as of 18:47, 27 March 2021
| Interval information |
[sound info]
In 17-limit Just Intonation, 17/9 is the large septendecimal major seventh, measuring about 1101¢. It is the mediant between 15/8 and 2/1. Its inversion is 18/17, the "small septendecimal semitone".
There exists a disagreement in different notation systems on whether 17/9 should be notated as a major seventh or a diminished octave. In Functional Just System, it is a diminished octave, whereas in Helmholtz-Ellis notation, it is a major seventh.