625/616: Difference between revisions

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{{Infobox Interval
{{Infobox Interval
| Name = Quadrikite comma
| Name = quadrikite comma, pakkanen comma
| Color name = 1ury<sup>4</sup>-2, luruquadyo negative 2nd
| Comma = yes
| Comma = yes
}}
}}
The '''quadrikite comma''' ([[ratio]]: 625/616, [[monzo]]: {{monzo| -3 0 4 -1 -1 }}) is a [[small comma|small]] [[11-limit]] [[comma]].  
'''625/616''', the '''quadrikite comma''' or '''pakkanen comma''' ({{monzo|legend=1| -3 0 4 -1 -1 }}) is a [[small comma|small]] [[11-limit]] (also 2.5.7.11-[[subgroup]]) [[comma]] measuring about 25.1 [[cent]]s.  


It was discovered by [[Lumi Pakkanen]] and [[Praveen Venkataramana]] when prompted to create a temperament that could be called ''xeimtionic'' that produces a [[6L 5s]] mos pattern so that the pattern could be named ''xeimtonic''. The name ''quadrikite'' comes from the fact that a gap of four strings on the Kite guitar can be both 625/256 and 77/32 when this comma is tempered out. It was originally intended to be paired with the '''frostma''' [[245/242]] to produce the [[No-threes subgroup temperaments #Frostburn|frostburn]] temperament as this was to be called ''xeimtionic'' (pronounced ''zeem-tee-onic'') for the desired 6L 5s mos pattern. All of this was inspired by an AI generated picture of ''xenharmonic music theory'' featuring something that looks like the word ''XEIMTIONC'', but the name wasn't used for [[TAMNAMS]] after all to remain temperament agnostic.
It can be factored into simpler commas as ([[100/99]])⋅([[225/224]]).  


== Temperaments ==
[[Tempering out]] this comma in the 11-limit leads to the rank-4 '''quadrikite''' temperament, or in the 2.5.7.11 subgroup, the rank-3 '''pakkanen''' temperament.
=== Pakkanen ===
[[Subgroup]]: 2.5.7.11
[[Comma list]]: 625/616
{{Mapping|legend=2| 1 0 0 -3 | 0 1 0 4 | 0 0 1 -1 }}
: mapping generators: ~2, ~5, ~7
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1200.6499{{c}}, ~5/4 = 380.2990{{c}}, ~7/4 = 969.2326{{c}}
: [[error map]]: {{val| +0.650 -4.715 +1.706 +2.595 }}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~5/4 = 380.6249{{c}}, ~7/4 = 969.6520{{c}}
: error map: {{val| 0.000 -5.689 +0.826 +1.530 }}
{{Optimal ET sequence|legend=1| 6, 16, 22, 28, 29, 35, 41, 57, 63, 98c }}
[[Badness]] (Sintel): 0.573
== Etymology ==
[[File:Xeimtionic.png|thumb|AI generated image of xenharmonic music theory.]]
[[File:Xeimtionic.png|thumb|AI generated image of xenharmonic music theory.]]


It can be factored into ([[100/99]])([[225/224]]).  
This comma was discovered by [[Lumi Pakkanen]] and [[Praveen Venkataramana]] when prompted to create a temperament that could be called ''xeimtionic'' that produces a [[6L 5s]] mos pattern so that the pattern could be named ''xeimtonic''. The name ''quadrikite'' comes from the fact that a gap of four strings on the Kite guitar can be both 625/256 and 77/32 when this comma is tempered out. It was originally intended to be paired with the frostma [[245/242]] to produce the [[frostburn]] temperament as this was to be called ''xeimtionic'' (pronounced ''zeem-tee-onic'') for the desired 6L 5s mos pattern. All of this was inspired by an AI generated picture of ''xenharmonic music theory'' featuring something that looks like the word ''XEIMTIONC'', but the name was not used for [[TAMNAMS]] after all to remain temperament agnostic.
 
== See also ==
* [[Small comma]]


[[Category:Quadrikite]]
[[Category:Quadrikite]]
[[Category:Commas named for their regular temperament properties]]