139ed5: Difference between revisions

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{{ED intro}}
{{ED intro}}


It is similar to [[60edo]], but with the octave (2/1) being [[octave stretch|stretched]] by about 2.7 cents, and with the interval [[5/1]] being [[just]], instead of 2/1 being just.
== Theory ==
139ed5 is similar to [[60edo]], but with the 5th harmonic being [[just]], instead of the [[2/1|octave]] being just. The octave is [[stretched and compressed tuning|stretched]] by about 2.73 cents. Like 60edo, 139ed5 is [[consistent]] to the [[integer limit|10-integer-limit]].  


== Harmonics ==
On the harmonics 2, [[3/1|3]], 5, [[7/1|7]], [[11/1|11]], 60edo has 0%, -10%, -32%, -44% and +43% relative error. On those same harmonics, 139ed5 has +14%, +12%, 0%, -6% and -10% relative error. This is a large improvement relative to the step size of the tuning if the focus is on the higher [[prime harmonic|primes]], and is the main reason why a composer might choose to use 139ed5.
On harmonics 2.3.5.7.11, 60edo has 0%, 10%, 32%, 44% and 43% relative error.


On those same harmonics, 139ed5 has 14%, 12%, 0%, 6% and 10% relative error.
=== Harmonics ===
{{Harmonics in equal|139|5|1|intervals=integer|columns=11}}
{{Harmonics in equal|139|5|1|intervals=integer|columns=12|start=12|collapsed=true|title=Approximation of harmonics in 139ed5 (continued)}}


This is a large improvement relative to the step size of the tuning, and is the main reason why a composer might choose to use 139ed5.
=== Subsets and supersets ===
{{Harmonics in equal|139|5|1|intervals=prime}}
139ed5 is the 34th [[prime equal division|prime ed5]]. It does not contain any nontrivial subset ed5's.


== Intervals ==
{{Interval table}}


60edo for comparison:
== See also ==
{{Harmonics in equal|60|2|1|intervals=prime}}
* [[35edf]] – relative edf
* [[60edo]] – relative edo
* [[95edt]] – relative edt
* [[155edt]] – relative ed6


== Intervals ==
{{Interval table}}


{{todo|expand}}
[[Category:60edo]]
[[Category:60edo]]