700edo

Revision as of 12:24, 14 January 2025 by FloraC (talk | contribs) (Theory: logic and grammar)
← 699edo 700edo 701edo →
Prime factorization 22 × 52 × 7
Step size 1.71429 ¢ 
Fifth 409\700 (701.143 ¢)
Semitones (A1:m2) 63:55 (108 ¢ : 94.29 ¢)
Dual sharp fifth 410\700 (702.857 ¢) (→ 41\70)
Dual flat fifth 409\700 (701.143 ¢)
Dual major 2nd 119\700 (204 ¢) (→ 17\100)
Consistency limit 7
Distinct consistency limit 7

Template:EDO intro

Theory

700edo is consistent to the 7-odd-limit, but its harmonic 3 is about halfway between its steps. It is strong in the 2.9.15.7.31 subgroup, tempering out 3969/3968, 420175/419904, 10255177611/10240000000 and 2202927104/2197265625. The equal temperament can also be used in the 2.9.5.7.13.17.23 subgroup, tempering out 1225/1224, 46000/45927, 8281/8280, 426496/426465, 31250/31213 and 262395/262144.

Odd harmonics

Approximation of odd harmonics in 700edo
Harmonic 3 5 7 9 11 13 15 17 19 21 23
Error Absolute (¢) -0.812 -0.599 -0.254 +0.090 +0.682 -0.528 +0.303 -0.384 +0.773 +0.648 -0.846
Relative (%) -47.4 -35.0 -14.8 +5.2 +39.8 -30.8 +17.7 -22.4 +45.1 +37.8 -49.3
Steps
(reduced)
1109
(409)
1625
(225)
1965
(565)
2219
(119)
2422
(322)
2590
(490)
2735
(635)
2861
(61)
2974
(174)
3075
(275)
3166
(366)

Subsets and supersets

Since 700 factors into 22 × 52 × 7, 700edo has subset edos 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, and 350. 1400edo, which doubles it, gives a good correction to the harmonic 3.

Regular temperament properties

Subgroup Comma list Mapping Optimal
8ve stretch (¢)
Tuning error
Absolute (¢) Relative (%)
2.9 [317 -100 [700 2219]] -0.0142 0.0142 0.83
2.9.5 [-65 0 28, [63 -25 7 [700 2219 1625]] +0.0766 0.1289 7.52
2.9.5.7 2100875/2097152, 184528125/184473632, 3500000000/3486784401 [700 2219 1625 1965]] +0.0801 0.1118 6.52