Semaphore and godzilla: Difference between revisions
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{{ | {{Interwiki | ||
| en = Semaphore and godzilla | | en = Semaphore and godzilla | ||
| de = Semiphor, Semaphor, Godzilla | | de = Semiphor, Semaphor, Godzilla | ||
| Line 12: | Line 12: | ||
| Mapping = 1; 2 8 1 11 | | Mapping = 1; 2 8 1 11 | ||
| Generators = 7/4 | | Generators = 7/4 | ||
| Generators tuning = | | Generators tuning = 948.0 | ||
| Optimization method = CWE | | Optimization method = CWE | ||
| Pergen = (P8, P4/2) | | Pergen = (P8, P4/2) | ||
| Line 20: | Line 20: | ||
| Odd limit 2 = 2.3.5.7.13 15 | Mistuning 2 = 20.5 | Complexity 2 = 14 | | Odd limit 2 = 2.3.5.7.13 15 | Mistuning 2 = 20.5 | Complexity 2 = 14 | ||
}} | }} | ||
'''Semaphore''', of the [[semaphoresmic clan]], is characterized by [[49/48]] being [[tempering out|tempered out]], so the [[generator]] represents [[7/4]] and [[12/7]] (or [[8/7]] and [[7/6]]) equally. This results in a very low [[complexity]] 2.3.7- | '''Semaphore''', of the [[semaphoresmic clan]], is characterized by [[49/48]] being [[tempering out|tempered out]], so the [[generator]] represents [[7/4]] and [[12/7]] (or [[8/7]] and [[7/6]]) equally. This results in a very low [[complexity]] [[2.3.7 subgroup|2.3.7-subgroup]] [[regular temperament|temperament]], with the drawback that most intervals of 7 must be out of tune by at least half of the comma 49/48, or about 18 [[cent]]s. ''Semaphore'' is a play on the words "semi-" and "fourth". | ||
If the [[5/1|5th harmonic]]'s intervals are desired, [[5/4]] can be sensibly mapped to +8 generators by tempering out [[81/80]], making it a [[ | If the [[5/1|5th harmonic]]'s intervals are desired, [[5/4]] can be sensibly mapped to +8 generators by tempering out [[81/80]], making it a [[meantone family #Extensions|meantone temperament]]. This temperament is '''godzilla'''. Moreover, the generator can be taken to be [[26/15]], which maps [[13/8]] to +11 generators by tempering out [[91/90]] and [[105/104]]. This extends the temperament to the 2.3.5.7.13 subgroup, with an abundance of harmonic resource and little additional damage. | ||
A more accurate but complex mapping of 5 can be found in [[immunity]], or 5/4 itself can be made the period by tempering out [[128/125]], resulting in [[triforce]]. | A more accurate but complex mapping of 5 can be found in [[immunity]], or 5/4 itself can be made the period by tempering out [[128/125]], resulting in [[triforce]]. | ||
| Line 255: | Line 255: | ||
| 9/7 | | 9/7 | ||
| 945.028 | | 945.028 | ||
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| 3/2 | | 3/2 | ||
| 950.978 | | 950.978 | ||
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| 951.405 | | 951.405 | ||
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|- | |- | ||
| [[5edo|4\5]] | | [[5edo|4\5]] | ||
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| 968.826 | | 968.826 | ||
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|} | |} | ||
<nowiki/>* Besides the octave | <nowiki/>* Besides the octave | ||