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'''Gaster''' is a [[regular temperament]] that tempers out a plethora of [[unnoticeable comma]]s including {{monzo|-70 72 -19}} (quadbila-negu). The generator for this temperament is a gassormic tritone, [[55/39]], and from this it derives its name. Aside from the psychoacoustic advantage of tempering out such small commas, a secondary concept of this temperament is that complex intervals in lower prime limits are identified with simple intervals in higher prime limits (for example, 55/39 = 38/27 = 31/22 = 24/17, 26/19 = 41/30 = 56/41, etc.) Since it tempers out the mirkwai comma, it qualifies as a [[Mirkwai clan|mirkwai temperament]].
'''Gaster''' is a [[regular temperament]] that tempers out a plethora of [[unnoticeable comma]]s including {{monzo|-70 72 -19}} ([[gaster comma]], quadbila-negu). The generator for this temperament is a gassormic tritone, [[55/39]], and from this it derives its name. Coincidentally, one of its commas involves stacking seventeen 9/8s, and 17 is a number associated with the character Gaster from Undertale. Aside from the psychoacoustic advantage of tempering out such small commas, a secondary concept of this temperament is that complex intervals in lower prime limits are identified with simple intervals in higher prime limits (for example, 55/39 = 38/27 = 31/22 = 24/17, 26/19 = 41/30 = 56/41, etc.) Since it tempers out the mirkwai comma, it qualifies as a [[Mirkwai clan|mirkwai temperament]].


== Temperament data ==
== Temperament data ==
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* 41-limit: ~2 = 1199.91875, ~24/17 = 594.60272
* 41-limit: ~2 = 1199.91875, ~24/17 = 594.60272


[[Optimal GPV sequence]]s:
[[Optimal ET sequence]]s:
* 7, 19 and 23-limit: {{Vals| 111, 224 }}
* 7, 19 and 23-limit: {{Optimal ET sequence| 111, 224 }}
* 11-limit: {{Vals| 111, 224, 783d, 1007d, 1231dd }}
* 11-limit: {{Optimal ET sequence| 111, 224, 783d, 1007d, 1231dd }}
* 13-limit: {{Vals| 111, 224, 783df, 1007df, 1231ddf }}
* 13-limit: {{Optimal ET sequence| 111, 224, 783df, 1007df, 1231ddf }}
* 17-limit: {{Vals| 111, 224, 559dgg }}
* 17-limit: {{Optimal ET sequence| 111, 224, 559dgg }}
* 29, 31, 37 and 41-limit: {{Vals| 111, 113, 224 }}
* 29, 31, 37 and 41-limit: {{Optimal ET sequence| 111, 113, 224 }}


[[Badness]]:  
[[Badness]]:  
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<nowiki>*</nowiki>3: SGT stands for smaller gassormic tritone.<br><nowiki>*</nowiki>4: in 41-limit POTE tuning
<nowiki>*</nowiki>3: SGT stands for smaller gassormic tritone.<br><nowiki>*</nowiki>4: in 41-limit POTE tuning
== Gaster comma ==
'''Gaster comma''' is a 5-limit [[unnoticeable comma]] measuring about 0.7995 cents. It is the difference between a stack of seventeen [[9/8]]s and a stack of nineteen [[10/9]]s, (9/8)<sup>17</sup>/(10/9)<sup>19</sup> = {{monzo|-70 72 -19}} (quadbila-negu). Equal temperaments which temper out this comma include {{Vals| 111, 113, 224, 335, 559, 783, 1342, 1901, 3243 }} and others.
=== 5-limit gaster temperament ===
<div class="toccolours mw-collapsible mw-collapsed" style="width:600px; overflow:auto;">
<div style="line-height:1.6;">'''5-limit gaster temperament (559&amp;1342)'''</div>
<div class="mw-collapsible-content">
Subgroup: 2.3.5
[[Comma]]: {{monzo|-70 72 -19}}
[[Mapping]]: [{{val|1 11 38}}, {{val|0 -19 -72}}]
[[POTE generator]]: ~1638400000/1162261467 = 594.63457
[[TOP tuning|TOP generator]]s: ~2 = 1200.00282, ~1638400000/1162261467 = 594.63596
{{Optimal GPV sequence|legend=1| 111, 224, 335, 559, 1342, 1901, 3243 }}
[[Badness]]: 0.088530
</div></div>


== See also ==
== See also ==
* [[Mirkwai clan]]
* [[Mirkwai clan]]
* [[Very high accuracy temperaments]]
* [[Unnoticeable comma]]
* [[Unnoticeable comma]]


[[Category: Mirkwai clan]]
[[Category:Gaster| ]] <!-- main article -->
[[Category: Index of temperaments]]
[[Category:Rank-2 temperaments]]
[[Category: Unnoticeable comma]]
[[Category:Mirkwai clan]]