nonoctave.com / tuning / equal divisions of the fourth Contact Us |  
Equal Divisions of Rational Intervals

Tables

  1. Octave (2/1)
  2. Quintave (3/2)
  3. Fourth (4/3)
  4. Minor Sixth (8/5)
  5. Major Sixth (5/3)
  6. Minor Seventh (9/5)
  7. Ninth (9/4)
  8. Major Tenth (5/2)
  9. Twelfth (3/1)
  10. Double Octave (4/1)
  11. Fifth Harmonic (5/1)
  12. Seventh Harmonic (7/1)
  13. Triple Octave (8/1)
  14. 11-Subminor Tritone (11/8)
  15. 11-Neutral Ninth (11/5)
  16. Subminor Tenth (7/3)
  17. Harmonic Seventh (7/4)
  18. Just Tritone (7/5)
  19. Augmented Just Tritone (10/7)
  20. 11-Subminor Sixth (11/7)
  21. Supermajor Sixth (12/7)

Equal Divisions of the Fourth

Compiled by X. J. Scott, January 2008

Tuning step size recipe Scale Pattern
3rd root of 4/3 166.015 cents LMSO Scale Recipe File Icon
0
166
166
166
332
166
498
 
664
 
830
 
996
 
1162
 
1328
 
1494
4th root of 4/3 124.511 cents LMSO Scale Recipe File Icon
0
125
125
125
249
125
374
125
498
 
623
 
747
 
872
 
996
 
1121
 
1245
 
1370
 
1494
5th root of 4/3 99.609 cents LMSO Scale Recipe File Icon
0
100
100
100
199
100
299
100
398
100
498
 
598
 
697
 
797
 
896
 
996
 
1096
 
1195
 
1295
 
1395
 
1494
6th root of 4/3 83.007 cents LMSO Scale Recipe File Icon
0
83
83
83
166
83
249
83
332
83
415
83
498
 
581
 
664
 
747
 
830
 
913
 
996
 
1079
 
1162
 
1245
 
1328
 
1411
7th root of 4/3 71.149 cents LMSO Scale Recipe File Icon
0
71
71
71
142
71
213
71
285
71
356
71
427
71
498
 
569
 
640
 
711
 
783
 
854
 
925
 
996
 
1067
 
1138
 
1210
 
1281
 
1352
 
1423
8th root of 4/3 62.256 cents LMSO Scale Recipe File Icon
0
62
62
62
125
62
187
62
249
62
311
62
374
62
436
62
498
 
560
 
623
 
685
 
747
 
809
 
872
 
934
 
996
 
1058
 
1121
 
1183
 
1245
 
1307
 
1370
 
1432
9th root of 4/3 55.338 cents LMSO Scale Recipe File Icon
0
55
55
55
111
55
166
55
221
55
277
55
332
55
387
55
443
55
498
 
553
 
609
 
664
 
719
 
775
 
830
 
885
 
941
 
996
 
1051
 
1107
 
1162
 
1217
 
1273
 
1328
 
1383
 
1439
10th root of 4/3 49.804 cents LMSO Scale Recipe File Icon
0
50
50
50
100
50
149
50
199
50
249
50
299
50
349
50
398
50
448
50
498
 
548
 
598
 
647
 
697
 
747
 
797
 
847
 
896
 
946
 
996
 
1046
 
1096
 
1146
 
1195
 
1245
 
1295
 
1345
 
1395
 
1444
11th root of 4/3 45.277 cents LMSO Scale Recipe File Icon
0
45
45
45
91
45
136
45
181
45
226
45
272
45
317
45
362
45
407
45
453
45
498
 
543
 
589
 
634
 
679
 
724
 
770
 
815
 
860
 
906
 
951
 
996
 
1041
 
1087
 
1132
 
1177
 
1222
 
1268
 
1313
 
1358
 
1404
 
1449
12th root of 4/3 41.504 cents LMSO Scale Recipe File Icon
0
42
42
42
83
42
125
42
166
42
208
42
249
42
291
42
332
42
374
42
415
42
457
42
498
 
540
 
581
 
623
 
664
 
706
 
747
 
789
 
830
 
872
 
913
 
955
 
996
 
1038
 
1079
 
1121
 
1162
 
1204
 
1245
 
1287
 
1328
 
1370
 
1411
13th root of 4/3 38.311 cents LMSO Scale Recipe File Icon
0
38
38
38
77
38
115
38
153
38
192
38
230
38
268
38
306
38
345
38
383
38
421
38
460
38
498
 
536
 
575
 
613
 
651
 
690
 
728
 
766
 
805
 
843
 
881
 
919
 
958
 
996
 
1034
 
1073
 
1111
 
1149
 
1188
 
1226
 
1264
 
1303
 
1341
 
1379
 
1418
14th root of 4/3 35.575 cents LMSO Scale Recipe File Icon
0
36
36
36
71
36
107
36
142
36
178
36
213
36
249
36
285
36
320
36
356
36
391
36
427
36
462
36
498
 
534
 
569
 
605
 
640
 
676
 
711
 
747
 
783
 
818
 
854
 
889
 
925
 
961
 
996
 
1032
 
1067
 
1103
 
1138
 
1174
 
1210
 
1245
 
1281
 
1316
 
1352
 
1387
 
1423
15th root of 4/3 33.203 cents LMSO Scale Recipe File Icon
0
33
33
33
66
33
100
33
133
33
166
33
199
33
232
33
266
33
299
33
332
33
365
33
398
33
432
33
465
33
498
 
531
 
564
 
598
 
631
 
664
 
697
 
730
 
764
 
797
 
830
 
863
 
896
 
930
 
963
 
996
 
1029
 
1062
 
1096
 
1129
 
1162
 
1195
 
1229
 
1262
 
1295
 
1328
 
1361
 
1395
 
1428
16th root of 4/3 31.128 cents LMSO Scale Recipe File Icon
0
31
31
31
62
31
93
31
125
31
156
31
187
31
218
31
249
31
280
31
311
31
342
31
374
31
405
31
436
31
467
31
498
 
529
 
560
 
591
 
623
 
654
 
685
 
716
 
747
 
778
 
809
 
840
 
872
 
903
 
934
 
965
 
996
 
1027
 
1058
 
1089
 
1121
 
1152
 
1183
 
1214
 
1245
 
1276
 
1307
 
1338
 
1370
 
1401
 
1432

Copyright © 2008,2011 X. J. Scott, Red Barn Goat Farm (nonoctave.com). All Rights Reserved.