833/832: Difference between revisions

Temperaments: comma list is usually omitted here
 
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'''833/832''', the '''horizma''' or '''horizon comma''', is an [[unnoticeable comma|unnoticeable]] [[17-limit]] (also 2.7.13.17-[[subgroup]]) [[comma]] with a size of roughly 2.08 [[cent]]s. It is the difference between [[17/13]] and a stack of two [[8/7]]'s. It is also the difference between [[52/49]] and [[17/16]], and between [[49/48]] and [[52/51]].  
'''833/832''', the '''horizma''' or '''horizon comma''', is a [[17-limit]] (also 2.7.13.17 [[subgroup]]) [[unnoticeable comma]], the difference between [[52/49]] and [[17/16]]. It is also the difference between [[49/48]] and [[52/51]].


== Commatic relations ==
== Commatic relations ==
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* [[1275/1274]] and [[2401/2400]]
* [[1275/1274]] and [[2401/2400]]
* [[1225/1224]] and [[2601/2600]]
* [[1225/1224]] and [[2601/2600]]
It also factors into the product of the following ultraparticulars:
It also factors into the product of the following ultraparticulars:
* [[43904/43875]] and [[57375/57344]].
* [[43904/43875]] and [[57375/57344]].


== Temperaments ==
== Temperaments ==
Tempering out this comma in the 17-limit results in the rank-6 '''horizmic temperament''', or in the 2.7.13.17 subgroup, the rank-3 '''horizon temperament'''.
[[Tempering out]] this comma in the 17-limit results in the rank-6 '''horizmic''' temperament, or in the 2.7.13.17 subgroup, the rank-3 '''horizon''' temperament. In either case, it enables [[horizmic chords]].  


=== Horizon ===
=== Horizon ===
[[Subgroup]]: 2.7.13.17
[[Subgroup]]: 2.7.13.17
[[Comma list]]: 833/832


{{Mapping|legend=2| 1 0 0 6 | 0 1 0 -2 | 0 0 1 1 }}
{{Mapping|legend=2| 1 0 0 6 | 0 1 0 -2 | 0 0 1 1 }}
 
: mapping generators: ~2, ~7, ~13
: sval mapping generators: ~2, ~7, ~11


[[Optimal tuning]]s:
[[Optimal tuning]]s:
* [[CTE]]: ~2 = 1\1, ~7/4 = 968.2966, ~13/8 = 840.9875
* [[WE]]: ~2 = 1200.1274{{c}}, ~7/4 = 968.2363{{c}}, ~13/8 = 840.4362{{c}}
* [[CWE]]: ~2 = 1\1, ~7/4 = 968.1967, ~13/8 = 840.5950
* [[CWE]]: ~2 = 1200.0000{{c}}, ~7/4 = 968.1967{{c}}, ~13/8 = 840.5950{{c}}


{{Optimal ET sequence|legend=1| 10, 21, 26, 36, 46, 47, 57, 93, 150, 207, 357, 704g, 854g, 911dg, 1061dg, 1268dg, 1418dgg }}
{{Optimal ET sequence|legend=1| 10, 21, 26, 36, 46, 47, 57, 93, 150, 207, 357, 704g, 854g, 911dg, 1061dg, 1268dg, 1418dgg }}
[[Badness]] (Sintel): 0.0198


=== Horizmic ===
=== Horizmic ===
[[Subgroup]]: 2.3.5.7.11.13.17
[[Subgroup]]: 2.3.5.7.11.13.17
[[Comma list]]: 833/832


[[Mapping]]:<br>
[[Mapping]]:<br>
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[[Optimal tuning]]s:
[[Optimal tuning]]s:
* [[CTE]]: ~2 = 1\1, ~3/2 = 701.9550, ~5/4 = 386.3137, ~7/4 = 968.2966, ~11/8 = 551.3179, ~13/8 = 840.9875
* [[WE]]: ~2 = 1200.1274{{c}}, ~3/2 = 701.8276{{c}}, ~5/4 = 386.0589{{c}}, ~7/4 = 968.2363{{c}}, ~11/8 = 550.9357{{c}}, ~13/8 = 840.4362{{c}}
* [[CWE]]: ~2 = 1\1, ~3/2 = 701.8313, ~5/4 = 386.1324, ~7/4 = 968.1967, ~11/8 = 551.0479, ~13/8 = 840.5950
* [[CWE]]: ~2 = 1200.0000{{c}}, ~3/2 = 701.8313{{c}}, ~5/4 = 386.1324{{c}}, ~7/4 = 968.1967{{c}}, ~11/8 = 551.0479{{c}}, ~13/8 = 840.5950{{c}}


{{Optimal ET sequence|legend=1| 22f, 26, 31, 41, 46, 58, 72, 103, 130, 140, 171, 212g, 217, 243e, 289, 301, 311, 414, 460, 684g, 771, 1004dg, 1144degg, 1558cdegg, 1775ddgg }}
{{Optimal ET sequence|legend=1| 22f, 26, 31, 41, 46, 58, 72, 103, 130, 140, 171, 212g, 217, 243e, 289, 301, 311, 414, 460, 684g, 771, 1004dg, 1144degg, 1558cdegg, 1775ddgg }}
[[Badness]] (Sintel): 1.14


== Etymology ==
== Etymology ==
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== See also ==
== See also ==
* [[Unnoticeable comma]]
* [[List of superparticular intervals]]
* [[List of superparticular intervals]]


[[Category:Horizmic]]
[[Category:Horizmic]]
[[Category:Commas with unknown etymology]]