Canonical extension: Difference between revisions
From Xenharmonic Reference
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* 5-limit Kleismic -> 2.3.5.13 Kleismic | * 5-limit Kleismic -> 2.3.5.13 Kleismic | ||
* 5-limit Porcupine -> 2.3.5.11 Porcupine | * 5-limit Porcupine -> 2.3.5.11 Porcupine | ||
* 5-limit Wurschmidt -> 2.3.5.23 Wurschmidt | <!--* 5-limit Wurschmidt -> 2.3.5.23 Wurschmidt--> | ||
=== Canonical but non-natural extensions === | === Canonical but non-natural extensions === | ||
* 5-limit Meantone -> 7-limit Septimal Meantone (12 & 19) | * 5-limit Meantone -> 7-limit Septimal Meantone (12 & 19) | ||
* 5-limit Tetracot -> 2.3.5.13 Tetracot | * 5-limit Tetracot -> 2.3.5.13 Tetracot | ||
Revision as of 14:00, 4 February 2026
This page or section is a work in progress. It may lack sufficient justification, content, or organization, and is subject to future overhaul.
This is a technical or mathematical page. While the subject may be of some relevance to music, the page treats the subject in technical language.
Consider a regular temperament on a JI group. The following are both informal concepts.
- A strong extension of said temperament on a JI group with one additional prime is natural if the commas tempered out by the temperament induce the presence of the added prime.
- Such an extension is (more weakly) canonical if it is the most efficient (accurate and low-complexity) strong extension of the temperament to the larger subgroup.
Examples
Natural extensions
- 5-limit Kleismic -> 2.3.5.13 Kleismic
- 5-limit Porcupine -> 2.3.5.11 Porcupine
Canonical but non-natural extensions
- 5-limit Meantone -> 7-limit Septimal Meantone (12 & 19)
- 5-limit Tetracot -> 2.3.5.13 Tetracot
