Mystery comma: Difference between revisions

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Propose "mystery comma" as a name (and link to mystery)
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{{Infobox Interval
{{Infobox Interval
| Icon =  
| Icon =  
| Ratio = 70368744177664 / 68630377364883
| Ratio = 70 368 744 177 664 / <br>68 630 377 364 883
| Monzo = 46 -29
| Monzo = 46 -29
| Cents = 43.30497
| Cents = 43.30497
| Name = 29-comma, <br>29-3-comma
| Name = 29-comma, <br>mystery comma
| Color name = s<sup>4</sup>w4
| Color name = s<sup>4</sup>w4
| FJS name =  
| FJS name =  
| Sound =  
| Sound =  
}}
}}
{{monzo|46 -29}}, the '''29-comma''' of 43.305 cents, is the difference between 46 octaves and 29 fifths, in other words 2<sup>46</sup>/3<sup>29</sup>. For EDOs up to 400, the 29-comma is tempered out if and only if 29 divides it, for example [[29edo]], [[58edo]] or [[87edo]].  
{{monzo|46 -29}}, the '''29-comma''' or '''mystery comma''' of 43.305 cents, is the difference between 46 octaves and 29 fifths, in other words 2<sup>46</sup>/3<sup>29</sup>.  


== Temperaments ==
== Temperaments ==
Tempering out the 29-comma splits the octave into 29 equal parts and maps the harmonic 3 to 17\29. It leads to a number of regular temperaments including [[Hemifamity temperaments|mystery]].  
Tempering out this comma splits the octave into 29 equal parts and maps the harmonic 3 to 17\29, leading to the 5-limit version of [[Mystery|mystery temperament]]. For EDOs up to 400, the 29-comma is tempered out if and only if 29 divides it, for example [[29edo]], [[58edo]] or [[87edo]].  
 
=== 29-commatic (58&amp;87) ===
Subgroup: 2.3.5
 
[[Comma list]]: {{monzo|46 -29}}
 
[[Mapping]]: [{{val| 29 46 0 }}, {{val| 0 0 1 }}]
 
Mapping generators: ~531441/524288, ~5
 
[[POTE generator]]: ~5/4 = 387.408
 
{{Val list|legend=1| 29, 58, 87, 232, 319 }}
 
[[Badness]]: 1.020556
 
=== 7-limit 58&amp;87 ===
Subgroup: 2.3.5.7
 
[[Comma list]]: 5120/5103, 50421/50000
 
[[Mapping]]: [{{val| 29 46 0 14 }}, {{val| 0 0 1 1 }}]
 
[[POTE generator]]: ~5/4 = 388.646
 
{{Val list|legend=1| 29, 58, 87, 145 }}
 
[[Badness]]: 0.103734
 
=== 11-limit 58&amp;87 (Mystery) ===
Subgroup: 2.3.5.7.11
 
Comma list: 441/440, 896/891, 3388/3375
 
Mapping: [{{val| 29 46 0 14 33 }}, {{val| 0 0 1 1 1 }}]
 
POTE generator: ~5/4 = 388.460
 
Vals: {{Val list| 29, 58, 87, 145 }}
 
Badness: 0.034291


== See also ==
== See also ==
* [[Gallery of Just Intervals]]
* [[Medium comma]]
* [[Medium commas]]


[[Category:3-limit]]
[[Category:3-limit]]
[[Category:29edo]]
[[Category:29edo]]
[[Category:Medium comma]]
[[Category:Medium comma]]
[[Category:Mystery]]