159edo: Difference between revisions
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=== Mappings === | === Mappings === | ||
A salient fact about 159edo is that 159 = 3 × 53, and it shares the same 3rd, 5th and 13th [[Overtone series|harmonics]] with [[53edo]]. However, compared to 53edo, the patent vals differ on the mappings for 7, 11 and 17 – in fact, this EDO has a very accurate 11 and an only slightly less accurate 17. Although 159edo is [[consistent]] up to the 17-odd-limit, it proves to be inconsistent in the 19-odd-limit, with the 19th harmonic having multiple reasonable mappings. Furthermore, even though 159edo is [[contorted]] in the 5-limit, there is a perfect match between the [[direct mapping]] and the more complicated traditional mapping for an [[octave-reduced]] stack of fifty-three tempered [[3/2]] perfect fifths – a complete [[circle of fifths]] for this EDO – as [[Mercator's comma]], which this EDO tempers out, is less than half the size of a single step in this EDO. This means that 159edo demonstrates 3-to-2 [[telicity]] – in fact, 159edo is the largest EDO divisible by 53 for which this is the case. However, for intervals such as [[49/32]] and [[128/125]], these two mappings don't match. While the [[patent val]] | A salient fact about 159edo is that 159 = 3 × 53, and it shares the same 3rd, 5th and 13th [[Overtone series|harmonics]] with [[53edo]]. However, compared to 53edo, the patent vals differ on the mappings for 7, 11 and 17 – in fact, this EDO has a very accurate 11 and an only slightly less accurate 17. Although 159edo is [[consistent]] up to the 17-odd-limit, it proves to be inconsistent in the 19-odd-limit, with the 19th harmonic having multiple reasonable mappings. Furthermore, even though 159edo is [[contorted]] in the 5-limit, there is a perfect match between the [[direct mapping]] and the more complicated traditional mapping for an [[octave-reduced]] stack of fifty-three tempered [[3/2]] perfect fifths – a complete [[circle of fifths]] for this EDO – as [[Mercator's comma]], which this EDO tempers out, is less than half the size of a single step in this EDO. This means that 159edo demonstrates 3-to-2 [[telicity]] – in fact, 159edo is the largest EDO divisible by 53 for which this is the case. However, for intervals such as [[49/32]] and [[128/125]], these two mappings don't match. While the [[patent val]] supports [[Mercator family#Cartography|cartography]] temperament, which is among the best 13-limit temperaments in the [[Mercator family]], the 159d and 159e mapping support other members of that temperament family. | ||
=== Commas === | === Commas === | ||