Canou family: Difference between revisions
Rename since none of the low accuracy extensions should be canonical |
→Semicanou: +new canonical 13-limit extension |
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== Semicanou == | == Semicanou == | ||
Semicanou adds 9801/9800, the kalisma, to the comma list, and may be described as 80 & 94 & 118. It splits the octave into two equal parts, each representing 99/70. Note that 99/70 = (81/70) | Semicanou adds 9801/9800, the kalisma, to the comma list, and may be described as 80 & 94 & 118. It splits the octave into two equal parts, each representing ~99/70. Note that 99/70 = (81/70)(11/9), this extension is more than natural. | ||
The other comma necessary to define it is 14641/14580, the [[semicanousma]], which is the difference between [[121/120]] and [[243/242]]. By flattening the 11th harmonic by one cent, it identifies [[20/11]] by three [[11/9]]'s stacked, so an octave can be divided into 11/9-11/9-11/9-11/10. | The other comma necessary to define it is 14641/14580, the [[semicanousma]], which is the difference between [[121/120]] and [[243/242]]. By flattening the 11th harmonic by one cent, it identifies [[20/11]] by three [[11/9]]'s stacked, so an octave can be divided into 11/9-11/9-11/9-11/10. | ||
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Subgroup: 2.3.5.7.11 | Subgroup: 2.3.5.7.11 | ||
Comma list: 9801/9800, 14641/14580 | [[Comma list]]: 9801/9800, 14641/14580 | ||
POTE | [[POTE generator]]s: ~3/2 = 702.3850, ~81/70 = 254.6168 or ~11/9 = 345.3832 | ||
Mapping: [{{val| 2 0 0 -2 1 }}, {{val| 0 1 2 2 2 }}, {{val| 0 0 4 -3 1 }}] | [[Mapping]]: [{{val| 2 0 0 -2 1 }}, {{val| 0 1 2 2 2 }}, {{val| 0 0 4 -3 1 }}] | ||
{{Val list|legend=1| 80, 94, 118, 198, 212, 292, 330e, 410 }} | {{Val list|legend=1| 80, 94, 118, 198, 212, 292, 330e, 410 }} | ||
Badness: 2.197 × 10<sup>-3</sup> | [[Badness]]: 2.197 × 10<sup>-3</sup> | ||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 1716/1715, 2080/2079, 14641/14580 | |||
Mapping: [{{val| 2 0 0 -2 1 -11 }}, {{val| 0 1 2 2 2 5 }}, {{val| 0 0 -4 3 -1 6 }}] | |||
POTE generators: ~3/2 = 702.5046, ~81/70 = 254.6501 or ~11/9 = 345.3499 | |||
Vals: {{Val list| 80f, 94, 118f, 198, 410 }} | |||
Badness: 2.974 × 10<sup>-3</sup> | |||
=== Semicanoumint === | === Semicanoumint === | ||
This extension was named ''semicanou'' in the earlier materials. It adds [[352/351]], the minthma, to the comma list | This extension was named ''semicanou'' in the earlier materials. It adds [[352/351]], the minthma, to the comma list, so that the flat ~11/9 simultaneously represents ~39/32. | ||
Subgroup: 2.3.5.7.11.13 | Subgroup: 2.3.5.7.11.13 |