Semaphoresmic family: Difference between revisions

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"optimal GPV sequence" → "optimal ET sequence", per Talk:Optimal_ET_sequence
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'''Semiphore family''' is a rank-3 temperament family of 2.3.5.7 that tempers out [[49/48]] and thereby identifies the septimal minor third, 7/6, and the septimal whole tone, 8/7. It also splits the fourth into two of these intervals; hence the name, which sounds like "semi-fourth". Related to this is the 2.3.7-limit 49/48 temperament called "[[Slendro clan #Semaphore|semaphore]]", and the 2.3.5.7 49/48 and 81/80 temperament called "[[Meantone family #Godzilla|godzilla]]".
'''Semiphore family''' is a rank-3 temperament family of 2.3.5.7 that tempers out [[49/48]] and thereby identifies the septimal minor third, [[7/6]], and the septimal whole tone, [[8/7]]. It also splits the fourth into two of these intervals; hence the name, which sounds like "semi-fourth". Related to this is the 2.3.7-limit 49/48 temperament called "[[Slendro clan #Semaphore|semaphore]]", and the 2.3.5.7 49/48 and 81/80 temperament called "[[Meantone family #Godzilla|godzilla]]".


== Semiphore  ==
== Semiphore  ==
 
[[Subgroup]]: 2.3.5.7
Subgroup: 2.3.5.7


[[Comma list]]: 49/48
[[Comma list]]: 49/48


[[Mapping]]: [{{val| 1 0 2 2 }}, {{val| 0 2 0 1 }}, {{val| 0 0 1 0 }}]
{{Mapping|legend=1| 1 0 2 2 | 0 2 0 1 | 0 0 1 0 }}


Mapping generators: ~2, ~7/4, ~5
: mapping generators: ~2, ~7/4, ~5


Lattice basis:  
Lattice basis:  
Line 15: Line 14:
: Angle (7/6, 5/4) = 90 degrees
: Angle (7/6, 5/4) = 90 degrees


[[POTE generator]]s: ~7/6 = 250.3846, ~5/4 = 379.7035
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~7/6 = 250.3846, ~5/4 = 379.7035


{{Optimal ET sequence|legend=1| 4, 5, 9, 10, 14c, 15, 19 }}
{{Optimal ET sequence|legend=1| 4, 5, 9, 10, 14c, 15, 19 }}


[[Badness]]: 0.116 × 10<sup>-3</sup>
[[Badness]]: 0.116 × 10<sup>-3</sup>
</div></div>


== Selenium  ==
== Selenium  ==
Subgroup: 2.3.5.7.11
[[Subgroup]]: 2.3.5.7.11


[[Comma list]]: 49/48, 56/55
[[Comma list]]: 49/48, 56/55


[[Mapping]]: [{{val| 1 0 2 2 5 }}, {{val| 0 2 0 1 1 }}, {{val| 0 0 1 0 -1 }}]
{{Mapping|legend=1| 1 0 2 2 5 | 0 2 0 1 1 | 0 0 1 0 -1 }}


[[POTE generator]]s: ~7/6 = 248.2710, ~5/4 = 390.6487
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~7/6 = 248.2710, ~5/4 = 390.6487


{{Optimal ET sequence|legend=1| 4, 5, 9, 10, 15, 19, 24, 34 }}
{{Optimal ET sequence|legend=1| 4, 5, 9, 10, 15, 19, 24, 34 }}
Line 41: Line 38:
Comma list: 49/48, 56/55, 91/90
Comma list: 49/48, 56/55, 91/90


Mapping: [{{val| 1 0 2 2 5 -1 }}, {{val| 0 2 0 1 1 3 }}, {{val| 0 0 1 0 -1 1 }}]
Mapping: {{mapping| 1 0 2 2 5 -1 | 0 2 0 1 1 3 | 0 0 1 0 -1 1 }}


POTE generators: ~7/6 = 248.7559, ~5/4 = 389.5957
Optimal tuning (POTE): ~2 = 1\1, ~7/6 = 248.7559, ~5/4 = 389.5957


{{Optimal ET sequence|legend=1| 5, 9, 10, 15, 19, 24, 34 }}
{{Optimal ET sequence|legend=1| 5, 9, 10, 15, 19, 24, 34 }}
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== Negric  ==
== Negric  ==
 
[[Subgroup]]: 2.3.5.7.11
Subgroup: 2.3.5.7.11


[[Comma list]]: 49/48, 225/224
[[Comma list]]: 49/48, 225/224


[[Mapping]]: [{{val| 1 2 2 3 0 }}, {{val| 0 -4 3 -2 0 }}, {{val| 0 0 0 0 1 }}]
{{Mapping|legend=1| 1 2 2 3 0 | 0 -4 3 -2 0 | 0 0 0 0 1 }}


[[POTE generator]]s: ~15/14 = 125.6080, ~11/8 = 539.2342
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~15/14 = 125.6080, ~11/8 = 539.2342


{{Optimal ET sequence|legend=1| 9, 10, 19, 29, 38d, 67cde }}
{{Optimal ET sequence|legend=1| 9, 10, 19, 29, 38d, 67cde }}
Line 69: Line 65:
Comma list: 49/48, 65/64, 91/90
Comma list: 49/48, 65/64, 91/90


Mapping: [{{val| 1 2 2 3 0 4 }}, {{val| 0 -4 3 -2 0 -3 }}, {{val| 0 0 0 0 1 0 }}]
Mapping: {{mapping| 1 2 2 3 0 4 | 0 -4 3 -2 0 -3 | 0 0 0 0 1 0 }}


POTE generators: ~14/13 = 125.5675, ~11/8 = 538.4845
Optimal tuning (POTE): ~2 = 1\1, ~14/13 = 125.5675, ~11/8 = 538.4845


{{Optimal ET sequence|legend=1| 9, 10, 19, 29, 38df, 67cdef }}
{{Optimal ET sequence|legend=1| 9, 10, 19, 29, 38df, 67cdef }}