22edo: Difference between revisions
m →Octave compression: unify section titles |
m →Octave stretch or compression: precision |
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; 22edo | ; 22edo | ||
* Step size: 54.545{{c}}, octave size: 1200. | * Step size: 54.545{{c}}, octave size: 1200.000{{c}} | ||
Pure-octaves 22edo approximates all harmonics up to 16 within 22.3{{c}}. The optimal 13-limit [[WE]] tuning has octaves only 0.01{{c}} different from pure-octaves 22edo, and the 13-limit [[TE]] tuning has octaves only 0.08{{c}} different, so by those metrics pure-octaves 22edo might be considered already optimal. It is a good 13-limit tuning for its size. | Pure-octaves 22edo approximates all harmonics up to 16 within 22.3{{c}}. The optimal 13-limit [[WE]] tuning has octaves only 0.01{{c}} different from pure-octaves 22edo, and the 13-limit [[TE]] tuning has octaves only 0.08{{c}} different, so by those metrics pure-octaves 22edo might be considered already optimal. It is a good 13-limit tuning for its size. | ||
{{Harmonics in equal|22|2|1|columns=11|collapsed=true | {{Harmonics in equal|22|2|1|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 22edo}} | ||
{{Harmonics in equal|22|2|1|columns=12|start=12|collapsed=true | {{Harmonics in equal|22|2|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 22edo (continued)}} | ||
; [[WE|22et, 11-limit WE tuning]] | ; [[WE|22et, 11-limit WE tuning]] | ||
* Step size: 54.494{{c}}, octave size: 1198. | * Step size: 54.494{{c}}, octave size: 1198.859{{c}} | ||
Compressing the octave of 22edo by around 1{{c}} results in slightly improved primes 3 and 7, but slightly worse primes 5 and 11, and a much worse 13. This approximates all harmonics up to 16 within 26.5{{c}}. Its 11-limit WE tuning and 11-limit [[TE]] tuning both do this. It is a good 11-limit tuning for its size. | Compressing the octave of 22edo by around 1.1{{c}} results in slightly improved primes 3 and 7, but slightly worse primes 5 and 11, and a much worse 13. This approximates all harmonics up to 16 within 26.5{{c}}. Its 11-limit WE tuning and 11-limit [[TE]] tuning both do this. It is a good 11-limit tuning for its size. | ||
{{Harmonics in cet|54. | {{Harmonics in cet|54.493592|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 22et, 11-limit WE tuning}} | ||
{{Harmonics in cet|54. | {{Harmonics in cet|54.493592|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 22et, 11-limit WE tuning (continued)}} | ||
; [[ | ; [[ZPI|80zpi]] | ||
* Step size: 54.483{{c}}, octave size: 1198. | * Step size: 54.483{{c}}, octave size: 1198.630{{c}} | ||
Compressing the octave of 22edo by around 1{{c}} results in slightly improved primes 3 and 7, but slightly worse primes 5 and 11, and a much worse 13. This approximates all harmonics up to 16 within 27.1{{c}}. The tuning 80zpi does this. It is a good 11-limit tuning for its size. | Compressing the octave of 22edo by around 1.4{{c}} results in slightly improved primes 3 and 7, but slightly worse primes 5 and 11, and a much worse 13. This approximates all harmonics up to 16 within 27.1{{c}}. The tuning 80zpi does this. It is a good 11-limit tuning for its size. | ||
{{Harmonics in cet|54.483|columns=11|collapsed=true | {{Harmonics in cet|54.483|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 80zpi}} | ||
{{Harmonics in cet|54.483|columns=12|start=12|collapsed=true | {{Harmonics in cet|54.483|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 80zpi (continued)}} | ||
; [[57ed6]] | ; [[57ed6]] | ||
* Step size: 54.420{{c}}, octave size: 1197. | * Step size: 54.420{{c}}, octave size: 1197.246{{c}} | ||
Compressing the octave of 22edo by around | Compressing the octave of 22edo by around 2.8{{c}} results in greatly improved primes 3 and 7, but far worse primes 5 and 11 and a [[JND|just noticeably worse]] 2. The mapping of 13 differs from 22edo but has about the same amount of error. This approximates all harmonics up to 16 within 21.9{{c}}. With its worse 5 and 11, it only really makes sense as a [[2.3.7 subgroup|2.3.7-subgroup]] tuning, e.g. for [[archy]] (2.3.7-subgroup superpyth) temperament. The tuning 57ed6 does this. | ||
{{Harmonics in equal|57|6|1|columns=11|collapsed=true | {{Harmonics in equal|57|6|1|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 57ed6}} | ||
{{Harmonics in equal|57|6|1|columns=12|start=12|collapsed=true | {{Harmonics in equal|57|6|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 57ed6 (continued)}} | ||
; [[35edt]] | ; [[35edt]] | ||
* Step size: 54.342{{c}}, octave size: 1195. | * Step size: 54.342{{c}}, octave size: 1195.515{{c}} | ||
Compressing the octave of 22edo by around 4.5{{c}} results in greatly improved primes 3, 7 and 13, but far worse primes 5 and 11 and a moderately worse 2. This approximates all harmonics up to 16 within 21.4{{c}}. The tunings 35edt and [[ | Compressing the octave of 22edo by around 4.5{{c}} results in greatly improved primes 3, 7 and 13, but far worse primes 5 and 11 and a moderately worse 2. This approximates all harmonics up to 16 within 21.4{{c}}. The tunings 35edt and [[62ed7]] both do this. This extends 57ed6's 2.3.7 tuning into a 2.3.7.13 [[subgroup]] tuning. | ||
{{Harmonics in equal|35|3|1|columns=11|collapsed=true | {{Harmonics in equal|35|3|1|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 35edt}} | ||
{{Harmonics in equal|35|3|1|columns=12|start=12|collapsed=true | {{Harmonics in equal|35|3|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 35edt (continued)}} | ||
== Scales == | == Scales == |