473edo: Difference between revisions

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The ''473 equal division'' divides the octave into 473 equal parts of 2.537 cents each. It tempers out the kleisma, 15625/15552, in the 5-limit and 5120/5103 in the 7-limit, providing the [[Optimal_patent_val|optimal patent val]] for 7-limit [[Kleismic_family#Countercata|countercata temperament]].
{{Infobox ET}}
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[[category:edo]]
473edo is in[[consistent]] to the [[5-odd-limit]] with large errors on both [[harmonic]]s [[3/1|3]] and [[5/1|5]]. It is most notable for [[tempering out]] the kleisma, [[15625/15552]], in the 5-limit and [[5120/5103]] in the 7-limit, providing the [[optimal patent val]] for the 7-limit [[countercata]] temperament.
[[Category:countercata]]
 
[[Category:kleisma]]
=== Odd harmonics ===
[[category:todo:expand]]
{{Harmonics in equal|473}}
 
=== Subsets and supersets ===
Since 473 factors into {{factorization|473}}, 473edo contains [[11edo]] and [[43edo]] as subsets.
 
[[Category:Countercata]]
[[Category:Kleismic]]

Latest revision as of 15:00, 20 February 2025

← 472edo 473edo 474edo →
Prime factorization 11 × 43
Step size 2.537 ¢ 
Fifth 277\473 (702.748 ¢)
Semitones (A1:m2) 47:34 (119.2 ¢ : 86.26 ¢)
Consistency limit 3
Distinct consistency limit 3

473 equal divisions of the octave (abbreviated 473edo or 473ed2), also called 473-tone equal temperament (473tet) or 473 equal temperament (473et) when viewed under a regular temperament perspective, is the tuning system that divides the octave into 473 equal parts of about 2.54 ¢ each. Each step represents a frequency ratio of 21/473, or the 473rd root of 2.

473edo is inconsistent to the 5-odd-limit with large errors on both harmonics 3 and 5. It is most notable for tempering out the kleisma, 15625/15552, in the 5-limit and 5120/5103 in the 7-limit, providing the optimal patent val for the 7-limit countercata temperament.

Odd harmonics

Approximation of odd harmonics in 473edo
Harmonic 3 5 7 9 11 13 15 17 19 21 23
Error Absolute (¢) +0.79 -0.69 +0.31 -0.95 -0.79 -0.78 +0.10 -0.94 -0.68 +1.10 +0.90
Relative (%) +31.3 -27.2 +12.1 -37.5 -31.1 -30.8 +4.1 -37.0 -27.0 +43.4 +35.5
Steps
(reduced)
750
(277)
1098
(152)
1328
(382)
1499
(80)
1636
(217)
1750
(331)
1848
(429)
1933
(41)
2009
(117)
2078
(186)
2140
(248)

Subsets and supersets

Since 473 factors into 11 × 43, 473edo contains 11edo and 43edo as subsets.