User:BudjarnLambeth/Sandbox2: Difference between revisions
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= Title1 = | = Title1 = | ||
== Octave stretch or compression == | == Octave stretch or compression == | ||
What follows is a comparison of | What follows is a comparison of compressed-octave 32edo tunings. | ||
; [[ | ; 32edo | ||
* Step size: NNN{{c}}, octave size: NNN{{c}} | * Step size: 37.500{{c}}, octave size: 1200.00{{c}} | ||
Pure-octaves 32edo approximates all harmonics up to 16 within NNN{{c}}. | |||
{{Harmonics in cet| | {{Harmonics in equal|32|2|1|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 32edo}} | ||
{{Harmonics in cet| | {{Harmonics in equal|32|2|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 32edo (continued)}} | ||
; [[WE|32et, 13-limit WE tuning]] | |||
* Step size: 37.481{{c}}, octave size: NNN{{c}} | |||
Compressing the octave of 32edo by around NNN{{c}} results in improved primes NNN, but worse primes NNN. This approximates all harmonics up to 16 within NNN{{c}}. Its 13-limit WE tuning and 13-linut [[TE]] tuning both do this. | |||
{{Harmonics in cet|37.481|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 32et, 13-limit WE tuning}} | |||
{{Harmonics in cet|37.481|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in ETNAME, SUBGROUP WE tuning (continued)}} | |||
; [[WE|32et, 11-limit WE tuning]] | |||
* Step size: 37.453{{c}}, octave size: NNN{{c}} | |||
Compressing the octave of 32edo by around NNN{{c}} results in improved primes NNN, but worse primes NNN. This approximates all harmonics up to 16 within NNN{{c}}. Its 11-limit WE tuning and 11-limit [[TE]] tuning both do this. | |||
{{Harmonics in cet|37.453|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 32et, 11-limit WE tuning}} | |||
{{Harmonics in cet|37.453|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 32et, 11-limit WE tuning (continued)}} | |||
; [[ | ; [[90ed7]] | ||
* Step size: NNN{{c}}, octave size: NNN{{c}} | * Step size: NNN{{c}}, octave size: NNN{{c}} | ||
Compressing the octave of 32edo by around NNN{{c}} results in improved primes NNN, but worse primes NNN. This approximates all harmonics up to 16 within NNN{{c}}. If one wishes to use both of 32edo's mappings of the 5th harmonic simultaneously, this tuning is suited to that due to evenly sharing the error between them. The tuning 90ed7 does this. | |||
{{Harmonics in equal| | {{Harmonics in equal|90|7|1|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 90ed7}} | ||
{{Harmonics in equal| | {{Harmonics in equal|90|7|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 90ed7 (continued)}} | ||
; [[ | ; [[zpi|133zpi]] | ||
* Step size: | * Step size: 37.418{{c}}, octave size: 1197.375{{c}} | ||
Compressing the octave of 32edo by around NNN{{c}} results in improved primes NNN, but worse primes NNN. This approximates all harmonics up to 16 within NNN{{c}}. The tuning 133zpi does this. | |||
{{Harmonics in cet|100|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in | {{Harmonics in cet|100|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 133zpi}} | ||
{{Harmonics in cet|100|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in | {{Harmonics in cet|100|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 133zpi (continued)}} | ||
Below is a plot of the [[Zeta]] function, showing how its peak (ie biggest absolute value) is shifted above 32, corresponding to a zeta tuning with octaves flattened to 1197.375 cents. This will improve the fifth, at the expense of the third. | |||
[[File:plot32.png|alt=plot32.png|plot32.png]] | |||
; [[ | ; [[51edt]] | ||
* Step size: NNN{{c}}, octave size: NNN{{c}} | * Step size: NNN{{c}}, octave size: NNN{{c}} | ||
Compressing the octave of 32edo by around NNN{{c}} results in improved primes NNN, but worse primes NNN. This approximates all harmonics up to 16 within NNN{{c}}. The tuning 51edt does this. | |||
{{Harmonics in | {{Harmonics in equal|51|3|1|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 51edt}} | ||
{{Harmonics in | {{Harmonics in equal|51|3|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 51edt (continued)}} | ||
; [[ | ; [[zpi|134zpi]] | ||
* Step size: | * Step size: 37.176{{c}}, octave size: NNN{{c}} | ||
Compressing the octave of 134zpi by around NNN{{c}} results in improved primes NNN, but worse primes NNN. This approximates all harmonics up to 16 within NNN{{c}}. The tuning 134zpi does this. | |||
{{Harmonics in | {{Harmonics in cet|37.176|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 134zpi}} | ||
{{Harmonics in | {{Harmonics in cet|37.176|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 134zpi (continued)}} | ||
; [[ | ; [[75ed5]] | ||
* Step size: NNN{{c}}, octave size: NNN{{c}} | * Step size: NNN{{c}}, octave size: NNN{{c}} | ||
Compressing the octave of 32edo by around NNN{{c}} results in improved primes NNN, but worse primes NNN. This approximates all harmonics up to 16 within NNN{{c}}. The tuning 75ed5 does this. | |||
{{Harmonics in | {{Harmonics in equal|75|5|1|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 75ed5}} | ||
{{Harmonics in | {{Harmonics in equal|75|5|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 75ed5 (continued)}} | ||
= Title2 = | = Title2 = |