41edo: Difference between revisions
ArrowHead294 (talk | contribs) m No. |
→Theory: over time this section has gotten messy. Here I adjust it by paragraphs as (1) rough overview of JI approximation quality. (2) further details. (3) 1\41. (4) temps. (5) others |
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== Theory == | == Theory == | ||
41edo is the second smallest equal division (after [[29edo]]) whose perfect fifth is closer to just intonation than that of [[12edo]], and is the seventh [[zeta integral edo]], after 31; it is not, however, a [[zeta gap edo]]. This has to do with the fact that it can deal with the [[11-limit]] fairly well, and perhaps the [[13-limit]] | 41edo is the second smallest equal division (after [[29edo]]) whose [[3/2|perfect fifth]] is closer to just intonation than that of [[12edo]], and is the seventh [[zeta integral edo]], after [[31edo|31]]; it is not, however, a [[zeta gap edo]]. This has to do with the fact that it can deal with the [[11-limit]] fairly well, and perhaps the [[13-limit]]. In fact, it is [[consistent]] to the [[15-odd-limit]], or the no-17's [[21-odd-limit]]. ''All'' of its intervals between 100 and 1100 cents in size are 15-odd-limit [[consonance]]s, although its [[~]][[13/10]] is 14 cents sharp and arguably manifests itself as [[21/16]] rather than 13/10. | ||
41edo is perhaps the smallest edo with a satisfactory model of the [[9-odd-limit]], not only because it is the smallest one to tune the 9-odd-limit [[consistency|distinctly consistent]], but it is also [[consistency #Consistency to distance d|consistent to distance 2]]. In other words, all intervals in the 9-odd-limit are more in-tune than out of tune. It is also the first edo to either match or improve on 12edo's accuracy of every harmonic up to the 16th, and no interval from the [[11-odd-limit]] except for [[11/10]] and [[20/11]] is represented with more than 10 cents of error in it. Apart from the full 13-limit, it is even more prominent as a 2.3.5.7.11.19.29.31 [[subgroup temperament]] for its size. | |||
A step of 41edo is close and consistently mapped to [[64/63]], the septimal comma. | A step of 41edo is close and consistently mapped to [[64/63]], the septimal comma. | ||
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=== Prime harmonics === | === Prime harmonics === | ||
{{Harmonics in equal|41|columns=12}} | {{Harmonics in equal|41|columns=12}} | ||
{{Harmonics in equal|41|start=13| | {{Harmonics in equal|41|columns=12|start=13|collapsed=true|title=Approximation of prime harmonics in 41edo (continued)}} | ||
=== Subsets and supersets === | === Subsets and supersets === | ||