Amity: Difference between revisions

Xenwolf (talk | contribs)
m see-also format
Improve intro
Line 1: Line 1:
{{See also|Amity family #Amity}}
'''Amity''' is the microtemperament tempering out the [[amity comma]], 1600000/1594323, in the 5-limit. This article also assumes the canonical mapping for 7, which means tempering out [[4375/4374]] and [[5120/5103]] in the 7-limit. Equal temperaments that support amity include [[46edo|46]], [[53edo|53]], [[99edo|99]], [[152edo|152]], and [[205edo|205]].
{{See also|Ragismic microtemperaments #Amity}}


'''Amity''' is a temperament for the 5, 7, 11, and 13 [[Harmonic limit|prime limits]]. Equal temperaments that support amity include [[46edo|46]], [[53edo|53]], [[99edo|99]], [[152edo|152]], and [[205edo|205]].
Extending amity from the 7-limit to the 11-limit is not so simple. There are two mappings that are comparable in complexity and error: 11-limit amity (53&205) and hitchcock (46&53). Tempering out 540/539 leads 11-limit amity, supported by 53et, 152et, and 205et. Tempering out 121/120 leads 11-limit hitchcock, supported by 46et, 53et, and 99et. They can be extended to the 13-limit by the 352/351 comma, and results in 625/624 and 729/728 being tempered out in 13-limit amity; 169/168 and 325/324 being tempered out in 13-limit hitchcock. In the 17-limit, 46&53 tempers out 154/153, 256/255, and 273/272.


In the 7-limit, amity tempers out 4375/4374 and 5120/5103, as well as 5-limit [[amity comma]], 1600000/1594323. But extending it from the 7-limit to the 11-limit is not so simple. There are two mappings that are comparable in complexity and error: 11-limit amity (53&205) and hitchcock (46&53).
See [[Amity family #Amity]] or [[Ragismic microtemperaments #Amity]] for more technical data.  
 
Tempering out 540/539 leads 11-limit amity, supported by 53et, 152et, and 205et. Tempering out 121/120 leads 11-limit hitchcock, supported by 46et, 53et, and 99et. They can be extended to the 13-limit by the 352/351 comma, and results in 625/624 and 729/728 being tempered out in 13-limit amity; 169/168 and 325/324 being tempered out in 13-limit hitchcock. In the 17-limit, 46&53 tempers out 154/153, 256/255, and 273/272.


== Interval chain ==
== Interval chain ==
Line 263: Line 260:
== Tuning spectra ==
== Tuning spectra ==
=== Spectrum of amity tunings ===
=== Spectrum of amity tunings ===
13-limit commas: 352/351, 540/539, 625/624, 729/728


13-limit commas: 352/351, 540/539, 625/624, 729/728
{| class="wikitable center-all left-3"
{| class="wikitable center-all left-3"
|-
|-
Line 325: Line 322:
| 11/8
| 11/8
| 339.495
| 339.495
| 13- and, 15-odd-limit minimax
| 13- and 15-odd-limit minimax
|-
|-
| 14/13
| 14/13
Line 365: Line 362:


=== Spectrum of hitchcock tunings ===
=== Spectrum of hitchcock tunings ===
13-limit commas: 121/120, 169/168, 176/175, 325/324


13-limit commas: 121/120, 169/168, 176/175, 325/324
{| class="wikitable center-all left-3"
{| class="wikitable center-all left-3"
|-
|-
! Eigenmonzo
! Eigenmonzo
! Generator
! Generator
! Comment
! Comments
|-
|-
| 12/11
| 12/11