407edo

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Revision as of 16:24, 22 December 2023 by Francium (talk | contribs) (Created page with "{{Infobox ET}} {{EDO intro|407}} == Theory == 407et tempers out 32805/32768 in the 5-limit; 4096000/4084101, 134217728/133984375, 26873856/26796875, 78125000/781218...")
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← 406edo 407edo 408edo →
Prime factorization 11 × 37
Step size 2.9484 ¢ 
Fifth 238\407 (701.72 ¢)
Semitones (A1:m2) 38:31 (112 ¢ : 91.4 ¢)
Consistency limit 7
Distinct consistency limit 7

Template:EDO intro

Theory

407et tempers out 32805/32768 in the 5-limit; 4096000/4084101, 134217728/133984375, 26873856/26796875, 78125000/78121827 and 48828125/48771072 in the 7-limit. It supports the pinkanberry chords and the temperament subsemifourth.

Prime harmonics

Approximation of prime harmonics in 407edo
Harmonic 2 3 5 7 11 13 17 19 23 29 31
Error Absolute (¢) +0.00 -0.24 -0.07 +1.20 +0.03 -0.23 +1.19 +0.28 -0.26 -0.58 -1.06
Relative (%) +0.0 -8.0 -2.5 +40.7 +1.1 -7.9 +40.3 +9.4 -9.0 -19.8 -35.8
Steps
(reduced)
407
(0)
645
(238)
945
(131)
1143
(329)
1408
(187)
1506
(285)
1664
(36)
1729
(101)
1841
(213)
1977
(349)
2016
(388)

Subsets and supersets

407 factors into 11 × 37, with 11edo and 37edo as its subset edos.

Regular temperament properties

Subgroup Comma List Mapping Optimal
8ve Stretch (¢)
Tuning Error
Absolute (¢) Relative (%)
2.3 [-645 407 [407 645]] 0.0742 0.0742 2.52
2.3.5 32805/32768, [30 47 -45 [407 645 945]] 0.0599 0.0638 2.16

Rank-2 temperaments

Table of rank-2 temperaments by generator
Periods
per 8ve
Generator
(reduced)*
Cents
(reduced)*
Associated
Ratio*
Temperaments
1 63\407 185.75 [24 4 -13 Pirate
1 169\407 498.28 4/3 Helmholtz

* octave-reduced form, reduced to the first half-octave, and minimal form in parentheses if it is distinct