4131/4096: Difference between revisions
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The '''septendecimal comma''', '''4131/4096''', is a [[17-limit]] [[comma]] measuring about 14.7 cents. It is the amount by which [[17/16]] deviates from [[256/243]]. | The '''septendecimal comma''' or '''Hunt flat 2 comma''', '''4131/4096''', is a [[17-limit]] [[comma]] measuring about 14.7 cents. It is the amount by which [[17/16]] deviates from [[256/243]]. | ||
Besides the relationship above, it is also the difference between [[18/17]] and [[2187/2048]], between [[17/12]] and [[1024/729]], and their respective inverses. Furthermore, it and the septendecimal schisma [[2187/2176]] make a [[Pythagorean comma]]. | Besides the relationship above, it is also the difference between [[18/17]] and [[2187/2048]], between [[17/12]] and [[1024/729]], and their respective inverses. Furthermore, it and the septendecimal schisma [[2187/2176]] make a [[Pythagorean comma]]. | ||
Revision as of 07:55, 24 September 2020
| Interval information |
reduced harmonic
The septendecimal comma or Hunt flat 2 comma, 4131/4096, is a 17-limit comma measuring about 14.7 cents. It is the amount by which 17/16 deviates from 256/243.
Besides the relationship above, it is also the difference between 18/17 and 2187/2048, between 17/12 and 1024/729, and their respective inverses. Furthermore, it and the septendecimal schisma 2187/2176 make a Pythagorean comma.
The septendecimal comma is significant in Functional Just System as the 17-limit formal comma which translates a Pythagorean interval to a nearby septendecimal interval. Consequently, 17/16 is represented as a minor second. In Helmholtz-Ellis notation (2020 version), however, that role is taken by 2187/2176, so 17/16 is represented as an augmented unison.