Porcupine family: Difference between revisions
Restore the layout. We list the canonical extension first. |
m More cleanup |
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=== Overview to extensions === | === Overview to extensions === | ||
==== 7-limit extensions ==== | ==== 7-limit extensions ==== | ||
The | The second comma defines which [[7-limit]] family member we are looking at. That means | ||
* [[64/63]], the archytas comma, for [[#Septimal porcupine|septimal porcupine]], | * [[64/63]], the archytas comma, for [[#Septimal porcupine|septimal porcupine]], | ||
* [[36/35]], the septimal quarter tone, for [[#Hystrix|hystrix]], | * [[36/35]], the septimal quarter tone, for [[#Hystrix|hystrix]], | ||
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Septimal porcupine uses six of its minor tone generator steps to get to [[7/4]]. Here, we share the same mapping of 7/4 in terms of fifths as [[archy]]. For this to work you need a small minor tone such as [[22edo]] provides, and once again 3\22 is a good tuning choice, though we might pick in preference 8\59, 11\81, or 19\140 for our generator. | Septimal porcupine uses six of its minor tone generator steps to get to [[7/4]]. Here, we share the same mapping of 7/4 in terms of fifths as [[archy]]. For this to work you need a small minor tone such as [[22edo]] provides, and once again 3\22 is a good tuning choice, though we might pick in preference 8\59, 11\81, or 19\140 for our generator. | ||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||