60edo: Difference between revisions

Theory: +octave stretch
Nearby equal-step tunings: cleanup and re-evaluate the degree of damage of certain tunings
Line 578: Line 578:
; 207ed11, 168ed7
; 207ed11, 168ed7


The tunings [[207ed11]] and [[168ed7]] are almost identical. Each is [[60edo]] but with slightly ''[[Octave stretch|stretched]]'' octaves.  
The tunings [[207ed11]] and [[168ed7]] are almost identical. Each is 60edo but with slightly ''stretched'' octaves.  


Each causes relatively large improvement to [[5/1]], [[7/1]] and [[11/1]] at the cost of moderate worsening of [[2/1]] and [[3/1]].
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]]s to flip for [[11/1]] and [[13/1]].
{{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 [[60edo]] but with slightly ''[[Octave stretch|stretched]]'' octaves.
The tuning [[139ed5]] is 60edo but with slightly ''stretched'' octaves.  
 
It causes relatively large improvement to [[5/1]], [[7/1]] and [[11/1]] at the cost of relatively small worsening of [[2/1]] and relatively large worsening of [[13/1]].  


It also causes the [[val]] for [[11/1]] to flip from 208 steps to 207 steps.
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 [[60edo]] but with slightly ''[[Octave stretch|stretched]]'' octaves.
The tuning [[301zpi]], the 301st [[zeta peak index]], is 60edo but with slightly ''stretched'' octaves.  
 
It causes relatively large improvement to [[3/1]], [[5/1]], [[7/1]], [[11/1]] and [[17/1]] at the cost of relatively small worsening of [[2/1]] and relatively large worsening of [[13/1]].  


It also causes the [[val]] for [[11/1]] to flip from 208 steps to 207 steps.
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 both [[consistent]] and [[distinctly consistent]] up to the 10-[[integer-limit]], which is unusually high for a two digit edo or three digit zpi.
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 [[60edo]] but with slightly ''[[Octave shrinking|compressed]]'' octaves.  
The tuning [[255ed19]] is 60edo but with slightly ''compressed'' octaves.  


It causes a relatively large improvement to [[11/1]], at the cost of relatively small worsening of every smaller prime.  
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 [[val]] for [[7/1]] to flip from 168 steps to 169.
{{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 [[60edo]] but with slightly ''[[Octave shrinking|compressed]]'' octaves.  
The tuning [[208ed11]] is 60edo but with slightly ''compressed'' octaves.  


It causes a relatively large improvement to [[7/1]] and [[11/1]], at the cost of moderate worsening of [[2/1]], [[3/1]] and [[5/1]].  
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 [[val]]s to flip for [[5/1]], [[7/1]] and [[17/1]].
{{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 [[60edo]] but with slightly ''[[Octave shrinking|compressed]]'' octaves.
The tuning [[272ed23]] is 60edo but with slightly ''compressed'' octaves.  
 
It causes a relatively large improvement to [[7/1]] and [[11/1]], at the cost of moderate worsening of [[2/1]], [[3/1]] and [[5/1]].
 
It also causes the [[val]]s to flip for [[5/1]], [[7/1]], [[13/1]] and [[17/1]].


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 272dg (later letters in the alphabet are better).
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}}