Systematic comma names explained: Difference between revisions
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[[Category:Comma|11th-octave temperament]] | [[Category:Comma|11th-octave temperament]] | ||
== Color notation == | |||
{{Main|Color notation/Temperament names}} | |||
Color notation uses syllables derived from English color names to express the prime factors, including repetitions and accounting for direction (up or down), that compose the ratio of a JI interval. Therefore, systematic comma names can be derived by finding any comma's associated color notation. Octave equivalence is assumed, so prime 2 is usually not indicated in the color name, while prime 3 is treated as a way to disambiguate simple and complex commas, instead of counting repetitions in the factorization. | |||
For example, [[250/243]] is Triyo, since it has three upwards 5s in its factorization, the rest being 2s and 3s only; for comparison, 273375/262144 is Latriyo and 64000/59049 is Satriyo, both having three upwards 5s as well, but having more complex structures in primes 2 and 3. | |||