User:BudjarnLambeth/Ed255/128: Difference between revisions

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An '''equal division of reduced harmonic 255''' ('''ed255/128''') is an [[equal-step tuning]] in which the octave-reduced 255th harmonic ([[255/128]]) is [[Just intonation|justly tuned]] and is divided in a given number of equal steps. 255/128 is very close to the [[octave]], 2/1, but it is slightly flatter. This makes it suitable as an alternative to edos whose consonances are too sharp, such as [[5edo]].
{{Editable user page}}


== 5ed255/128 ==
=== Harmonics ===
{{Harmonics in equal|5|255|128|intervals=prime}}


An '''equal division of reduced harmonic 255''' ('''ed255/128''') is an [[equal-step tuning]] in which the octave-reduced 255th harmonic ([[255/128]]) is [[Just intonation|justly tuned]] and is divided in a given number of equal steps. 255/128 is very close to the [[octave]], 2/1, but it is slightly flatter. This makes it suitable as an alternative to edos whose consonances are too sharp, such as [[6edo]].


5edo, [[8edt]], [[14ed7]] for comparison:
Ed255/128s really only make sense for that purpose with 65 or fewer tones per [[pseudo-octave]]. With more tones than that, the relative error on 2/1 becomes unacceptably high and it makes more sense to switch to a different tuning like a [[zpi]] or ed511/256.
{{Harmonics in equal|5|intervals=prime|collapsed=1}}
{{Harmonics in equal|8|3|1|intervals=prime|collapsed=1}}
{{Harmonics in equal|14|7|1|intervals=prime|collapsed=1}}
 
=== Intervals ===
* 238.645
* 477.29
* 715.934
* 954.579
* 1193.224


Ed255/128s are the complementary opposite of [[ed257/128]]s.


== 6ed255/128 ==
== 6ed255/128 ==
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[[6edo]] for comparison:
6edo for comparison:
{{Harmonics in equal|6|intervals=odd|collapsed=1}}
{{Harmonics in equal|6|intervals=odd|collapsed=1}}


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* 795.483
* 795.483
* 994.353
* 994.353
* 1193.224
== 8ed255/128 ==
=== Harmonics ===
{{Harmonics in equal|8|255|128|intervals=odd}}
[[8edo]] for comparison:
{{Harmonics in equal|8|intervals=odd|collapsed=1}}
=== Intervals ===
* 149.153
* 298.306
* 447.459
* 596.612
* 745.765
* 894.918
* 1044.071
* 1193.224
* 1193.224


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** Undecimal lydian-aeolian pentatonic: '''8 14 3 11 6'''
** Undecimal lydian-aeolian pentatonic: '''8 14 3 11 6'''
** Yokai pentatonic: '''3 14 8 3 14'''
** Yokai pentatonic: '''3 14 8 3 14'''


== 49ed255/128 ==
== 49ed255/128 ==
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[[49edo]] for comparison:
[[49edo]] for comparison:
{{Harmonics in equal|49|intervals=prime|collapsed=1}}
{{Harmonics in equal|49|intervals=prime|collapsed=1}}


== 54ed255/128 ==
== 54ed255/128 ==
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[[54edo]] for comparison:
[[54edo]] for comparison:
{{Harmonics in equal|54|intervals=prime|collapsed=1}}
{{Harmonics in equal|54|intervals=prime|collapsed=1}}




== Related concepts ==
== Related concepts ==
* [[Ed257/128]]
* [[Substitute harmonic]]
* [[Substitute harmonic]]
* [[Equal-step tuning]]
* [[Equal-step tuning]]


[[Category:Edonoi]][[Category:5edo]][[Category:5-tone scales]]
[[Category:Edonoi]][[Category:5edo]][[Category:5-tone scales]]