60edo: Difference between revisions
→Theory: +octave stretch |
→Nearby equal-step tunings: cleanup and re-evaluate the degree of damage of certain tunings |
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; 207ed11, 168ed7 | ; 207ed11, 168ed7 | ||
The tunings [[207ed11]] and [[168ed7]] are almost identical. Each is | The tunings [[207ed11]] and [[168ed7]] are almost identical. Each is 60edo but with slightly ''stretched'' octaves. | ||
Each | Each induces relatively large improvement to [[5/1]], [[7/1]] and [[11/1]] at the cost of worsening of [[2/1]] and [[3/1]]. Each also causes the [[patent val]] to flip for [[11/1]] and [[13/1]]. | ||
Each also causes the [[val]] | |||
{{Harmonics in equal|207|11|1|intervals=prime|columns=11|collapsed=1}} | {{Harmonics in equal|207|11|1|intervals=prime|columns=11|collapsed=1}} | ||
{{Harmonics in equal|168|7|1|intervals=prime|columns=11|collapsed=1}} | {{Harmonics in equal|168|7|1|intervals=prime|columns=11|collapsed=1}} | ||
Line 588: | Line 586: | ||
; 139ed5 | ; 139ed5 | ||
The tuning [[139ed5]] is | The tuning [[139ed5]] is 60edo but with slightly ''stretched'' octaves. | ||
It also causes the | It induces relatively large improvement to 5/1, 7/1 and 11/1 at the cost of worsening of 2/1 and 13/1. It also causes the patent val for 11/1 to flip from 208 steps to 207 steps. | ||
{{Harmonics in equal|139|5|1|intervals=prime|columns=11|collapsed=1}} | {{Harmonics in equal|139|5|1|intervals=prime|columns=11|collapsed=1}} | ||
; 301zpi | ; 301zpi | ||
The tuning [[301zpi]], the 301st [[zeta peak index]], is | The tuning [[301zpi]], the 301st [[zeta peak index]], is 60edo but with slightly ''stretched'' octaves. | ||
It also causes the | It induces relatively large improvement to 3/1, 5/1, 7/1, 11/1 and 17/1 at the cost of worsening of 2/1 and 13/1. It also causes the patent val for 11/1 to flip from 208 steps to 207 steps. | ||
301zpi is | Like 60edo, 301zpi is distinctly consistent up to the [[integer limit|10-integer-limit]]. | ||
{{Harmonics in equal|1|38083|37645|intervals=prime|columns=11|title= Approximation of prime harmonics in 301zpi|collapsed=1}} | {{Harmonics in equal|1|38083|37645|intervals=prime|columns=11|title=Approximation of prime harmonics in 301zpi|collapsed=1}} | ||
; 60edo | ; 60edo | ||
Line 611: | Line 605: | ||
; 255ed19 | ; 255ed19 | ||
The tuning [[255ed19]] is | The tuning [[255ed19]] is 60edo but with slightly ''compressed'' octaves. | ||
It | It induces a relatively large improvement to 11/1, at the cost of worsening of every smaller prime. It also causes the patent val for 7/1 to flip from 168 steps to 169. | ||
It also causes the | |||
{{Harmonics in equal|255|19|1|intervals=prime|columns=11|collapsed=1}} | {{Harmonics in equal|255|19|1|intervals=prime|columns=11|collapsed=1}} | ||
; 208ed11 | ; 208ed11 | ||
The tuning [[208ed11]] is | The tuning [[208ed11]] is 60edo but with slightly ''compressed'' octaves. | ||
It | It induces a relatively large improvement to 7/1 and 11/1, at the cost of worsening of 2/1, 3/1 and 5/1. It also causes the patent val to flip for 5/1, 7/1 and 17/1. | ||
It also causes the | |||
{{Harmonics in equal|208|11|1|intervals=prime|columns=11|collapsed=1}} | {{Harmonics in equal|208|11|1|intervals=prime|columns=11|collapsed=1}} | ||
; 272ed23 | ; 272ed23 | ||
The tuning [[272ed23]] is | The tuning [[272ed23]] is 60edo but with slightly ''compressed'' octaves. | ||
It induces a relatively large improvement to 7/1 and 11/1, at the cost of worsening of 2/1, 3/1 and 5/1. It also causes the patent val to flip for 5/1, 7/1, 13/1 and 17/1. | |||
Given this, 272ed23 can be thought of as a 60edo clone tailor-made for catnip. | These characteristics, particularly the flipped 5/1 and 13/1, are preferred over pure-octaves 60edo for [[catnip]] temperament specifically. They change catnip's [[wart]]s from 60cf to i272dg (later letters in the alphabet are better). Given this, 272ed23 can be thought of as a 60edo clone tailor-made for catnip. | ||
{{Harmonics in equal|272|23|1|intervals=prime|columns=11|collapsed=1}} | {{Harmonics in equal|272|23|1|intervals=prime|columns=11|collapsed=1}} | ||