The Biosphere: Difference between revisions

m Cleanup (2/3)
m Cleanup (3/3)
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== Biosphere ==
== Biosphere ==
Subgroup: Full 13-limit
Subgroup: full 13-limit


Comma list: 91/90
Comma list: 91/90
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[[POTE generator]]: ~4/3 = 486.090
[[POTE generator]]: ~4/3 = 486.090


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


{{Val list|legend=1| 27, 32 }}
{{Val list|legend=1| 27, 32 }}
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== Oceanfront Children ==
== Oceanfront Children ==
=== Superpyth ===
=== Superpyth ===
{{see also| Archytas clan #Superpyth }}


Extends 11-limit superpyth as 22&49.
Extends 11-limit superpyth as 22&49.


Subgroup: 2.3.5.7.11.13
Subgroup: full 13-limit


Comma list: 91/90, 64/63, 78/77, 245/243
Comma list: 91/90, 64/63, 78/77, 245/243
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[[POTE generator]]: ~4/3 = 489.521
[[POTE generator]]: ~4/3 = 489.521


Mapping: [< 1 2 6 2 10 9|, <0 -1 -9 2 -16 -13|]
Mapping: [{{val| 1 2 6 2 10 9 }}, {{val| 0 -1 -9 2 -16 -13 }}]


{{Val list|legend=1| 22, 27e, 32c, 37e, 49, 76bcde }}
{{Val list|legend=1| 22, 27e, 32c, 37e, 49, 76bcde }}
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=== Porcupinefish ===
=== Porcupinefish ===
{{see also| Porcupine family #Porcupinefish }}


Porcupinefish is the 13-limit extension of [[Porcupine|porcupine]] that you get by adding 91/90 to the usual mix of porcupine temperaments. Its name is derived from that it is a combination of the porcupine and oceanfront temperaments.
Porcupinefish is the 13-limit extension of [[Porcupine|porcupine]] that you get by adding 91/90 to the usual mix of porcupine temperaments. Its name is derived from that it is a combination of the porcupine and oceanfront temperaments.


Subgroup: 13-limit
Subgroup: full 13-limit


Comma list: 91/90, 64/63, 250/243, 121/120
Comma list: 91/90, 64/63, 250/243, 121/120
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[[POTE generator]]: ~10/9 = 162.277
[[POTE generator]]: ~10/9 = 162.277


Mapping: [<1 2 3 2 4 6|, <0 -3 -5 6 -4 -17|]
Mapping: [{{val| 1 2 3 2 4 6 }}, {{val| 0 -3 -5 6 -4 -17 }}]


{{Val list|legend=1| 15, 22, 37, 59 }}
{{Val list|legend=1| 15, 22, 37, 59 }}
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== Tropic ==
== Tropic ==


Tropic is the merger of the biosphere and the [[The Archipelago|archipelago]]. It is also a subgroup relative of semaphore temperament, since 49/48 vanishes. Of note is that 676/675 vanishes, so that two 7/6's (or 15/13)'s is equated with 4/3. While this temperament doesn't take advantage of the nearly pure harmonies that biome tempering can offer, particularly where 7/4 is involved, it still has some use, particularly for those who don't mind a bit more error in their tunings.
Tropic is the merger of the biosphere and the [[The Archipelago|archipelago]]. It is also a subgroup relative of semaphore temperament, since [[49/48]] vanishes. Of note is that [[676/675]] vanishes, so that two 7/6's (or 15/13)'s is equated with 4/3. While this temperament doesn't take advantage of the nearly pure harmonies that biome tempering can offer, particularly where 7/4 is involved, it still has some use, particularly for those who don't mind a bit more error in their tunings.


Subgroup: 2.3.7.13/5
Subgroup: 2.3.7.13/5
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[[POTE generator]]: ~7/6 = 251.507
[[POTE generator]]: ~7/6 = 251.507


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


{{Val list|legend=1| 19, 24 }}
{{Val list|legend=1| 19, 24 }}
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[[POTE generator]]: 443.322
[[POTE generator]]: 443.322


Mapping: [<1 -1 -1 -2 0|, <0 7 9 13 10|]
Mapping: [{{val| 1 -1 -1 -2 0 }}, {{val| 0 7 9 13 10 }}]


{{Val list|legend=1| 19, 27, 46 }}
{{Val list|legend=1| 19, 27, 46 }}


== Echidnic ==
== Echidnic ==
13-limit [[Diaschismic family #Echidnic|echidnic]] temperament, the 10&46 temperament, is about as accurate as a biosphere temperament can get.
{{see also| Diaschismic family #Echidnic }}
 
13-limit echidnic temperament, the 10&46 temperament, is about as accurate as a biosphere temperament can get.


[[Category:Theory]]
[[Category:Theory]]