User:BudjarnLambeth/Sandbox2: Difference between revisions
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== Octave stretch or compression == | == Octave stretch or compression == | ||
99edo's approximations of harmonics 3, 5, and 7 can all be improved if slightly [[stretched and compressed tuning|compressing the octave]] is acceptable, using tunings such as [[157edt]] or [[256ed6]]. 157edt is especially performant if the 13-limit of the 99ef val is intended, but the 7-limit part is overcompressed, for which the milder 256ed6 is a better choice. If the 13-limit patent val is intended, then little to no compression, or even stretch, might be serviceable. | |||
What follows is a comparison of stretched- and compressed-octave | What follows is a comparison of stretched- and compressed-octave 99edo tunings. | ||
; | ; [[zpi|567zpi]] | ||
* Step size: | * Step size: 12.138{{c}}, octave size: NNN{{c}} | ||
Stretching the octave of 99edo 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 567zpi does this. | |||
{{Harmonics in | {{Harmonics in cet|12.138|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 567zpi}} | ||
{{Harmonics in | {{Harmonics in cet|12.138|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 567zpi (continued)}} | ||
; [[WE| | ; [[WE|99et, 13-limit WE tuning]] | ||
* Step size: | * Step size: 12.123{{c}}, octave size: NNN{{c}} | ||
Stretching the octave of | Stretching the octave of 99edo 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-limit [[TE]] tuning both do this. | ||
{{Harmonics in cet| | {{Harmonics in cet|12.123|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 99et, 13-limit WE tuning}} | ||
{{Harmonics in cet| | {{Harmonics in cet|12.123|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 99et, 13-limit WE tuning (continued)}} | ||
; | ; 99edo | ||
* Step size: | * Step size: 12.121{{c}}, octave size: 1200.00{{c}} | ||
Pure-octaves 99edo approximates all harmonics up to 16 within NNN{{c}}. | |||
{{Harmonics in | {{Harmonics in equal|99|2|1|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 99edo}} | ||
{{Harmonics in | {{Harmonics in equal|99|2|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 99edo (continued)}} | ||
; [[WE| | ; [[WE|99et, 7-limit WE tuning]] | ||
* Step size | * Step size: 12.117{{c}}, octave size: NNN{{c}} | ||
Compressing the octave of 99edo by around NNN{{c}} results in improved primes NNN, but worse primes NNN. This approximates all harmonics up to 16 within NNN{{c}}. Its 7-limit WE tuning and 7-limit [[TE]] tuning both do this. | |||
{{Harmonics in cet| | {{Harmonics in cet|12.117|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 99et, 7-limit WE tuning}} | ||
{{Harmonics in cet| | {{Harmonics in cet|12.117|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 99et, 7-limit WE tuning (continued)}} | ||
; [[ | ; [[zpi|568zpi]] | ||
* Step size | * Step size: 12.115{{c}}, octave size: NNN{{c}} | ||
Compressing the octave of 99edo 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 568zpi does this. | |||
{{Harmonics in equal| | {{Harmonics in cet|12.115|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 568zpi}} | ||
{{Harmonics in equal| | {{Harmonics in cet|12.115|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 568zpi (continued)}} | ||
{{Harmonics in equal| | |||
{{Harmonics in equal| | ; [[256ed6]] | ||
* Step size: NNN{{c}}, octave size: NNN{{c}} | |||
Compressing the octave of 99edo 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 256ed6 does this. | |||
{{Harmonics in equal|256|6|1|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 256ed6}} | |||
{{Harmonics in equal|256|6|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 256ed6 (continued)}} | |||
; [[157edt]] | |||
* Step size: NNN{{c}}, octave size: NNN{{c}} | |||
Compressing the octave of 99edo 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 157edt does this. | |||
{{Harmonics in equal|157|3|1|intervals=integer|columns=11|collapsed=true|title=Approximation of harmonics in 157edt}} | |||
{{Harmonics in equal|157|3|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 157edt (continued)}} | |||
= Title2 = | = Title2 = | ||
=== Placeholder === | === Placeholder === | ||