Jacobin chords: Difference between revisions

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Jacobin chords are [[essentially tempered dyadic chord]]s tempered by the jacobin comma, 6656/6655.
'''Jacobin chords''' are [[essentially tempered dyadic chord]]s tempered by the jacobin comma, [[6656/6655]].


There are five chords known. The notation assumes each interval is the interval from the chord and not from the tonic.
Since the temperament is very complex, even the simplest jacobin chords are 55-odd-limit, although they don't contain a lot of notes, just complex intervals. There are
* 1-11/8-16/11 with steps 11/8-55/52-11/8;
* 1-64/55-11/8 with steps 64/55-13/11-16/11, and its inverse
* 1-13/11-11/8 with steps 13/11-64/55-16/11.  


* 1/1 - 55/52 - 11/8 - 11/8
For tetrads, there are
* 1/1 - 64/55 - 13/11 - 16/11
* 1-11/8-16/11-104/55 with steps 11/8-55/52-13/10-55/52;
* 1/1 - 13/10 - 16/11 - 128/121
* 1-13/11-11/8-104/55 with steps 13/11-64/55-11/8-55/52, and its inverse
* 1/1 - 13/11 - 8/5 - 128/121
* 1-64/55-11/8-16/11 with steps 64/55-13/11-55/52-11/8;
* 1/1 - 5/4 - 11/8 - 121/104
* 1-64/55-11/8-104/55 with steps 64/55-13/11-11/8-55/52, and its inverse
* 1-13/11-11/8-16/11 with steps 13/11-64/55-55/52-11/8.


[[Category:55-odd-limit]]
[[Category:Jacobin]]
[[Category:Jacobin]]
[[Category:Essentially tempered dyadic chords]]
[[Category:Essentially tempered chords]]
[[Category:Triads]]
[[Category:Triads]]
[[Category:Tetrads]]

Latest revision as of 21:53, 16 June 2023

Jacobin chords are essentially tempered dyadic chords tempered by the jacobin comma, 6656/6655.

Since the temperament is very complex, even the simplest jacobin chords are 55-odd-limit, although they don't contain a lot of notes, just complex intervals. There are

  • 1-11/8-16/11 with steps 11/8-55/52-11/8;
  • 1-64/55-11/8 with steps 64/55-13/11-16/11, and its inverse
  • 1-13/11-11/8 with steps 13/11-64/55-16/11.

For tetrads, there are

  • 1-11/8-16/11-104/55 with steps 11/8-55/52-13/10-55/52;
  • 1-13/11-11/8-104/55 with steps 13/11-64/55-11/8-55/52, and its inverse
  • 1-64/55-11/8-16/11 with steps 64/55-13/11-55/52-11/8;
  • 1-64/55-11/8-104/55 with steps 64/55-13/11-11/8-55/52, and its inverse
  • 1-13/11-11/8-16/11 with steps 13/11-64/55-55/52-11/8.