Harry Partch 43 tone Just Intonation scale

 Note degree

Interval

Value in cents

 Interval Name

1

1/1

0
 unison

2

81/80

21.50629
 syntonic comma

3

33/32

53.27296
 undecimal comma

4

21/20

84.46723
 minor semitone

5

16/15

111.7313
 minor diatonic semitone

6

12/11

150.6371
 3/4-tone, undecimal neutral second

7

11/10

165.0043
 4/5-tone

8

10/9

182.4038
 minor whole tone

9

9/8

203.9100
 major whole tone

10

8/7

231.1741
 septimal whole tone

11

7/6

266.8710
 septimal minor third

12

32/27

294.1351
 Pythagorean minor third

13

6/5

315.6414
 minor third

14

11/9

347.4080
 undecimal neutral third

15

5/4

386.3139
 major third

16

14/11

417.5081
 -

17

9/7

435.0843
 septimal major third

18

21/16

470.7811
 narrow fourth

19

4/3

498.0452
 perfect fourth

20

27/20

519.5515
 acute fourth

21

11/8

551.3181
 harmonic augmented fourth

22

7/5

582.5125
 septimal tritone

23

10/7

617.4880
 Euler's tritone

24

16/11

648.6823
 harmonic diminished fifth

25

40/27

680.4490
 narrow fifth

26

3/2

701.9553
 perfect fifth

27

32/21

729.2194
 wide fifth

28

14/9

764.9162
 septimal minor sixth

29

11/7

782.4924
 -

30

8/5

813.6866
 minor sixth

31

18/11

852.5924
 undecimal neutral sixth

32

5/3

884.3591
 major sixth

33

27/16

905.8654
 Pythagorean major sixth

34

12/7

933.1295
 septimal major sixth

35

7/4

968.8264
 harmonic seventh

36

16/9

996.0905
 Pythagorean minor seventh

37

9/5

1017.596
 just minor seventh

38

20/11

1034.996
 -

39

11/6

1049.363
 21/4-tone, undecimal neutral seventh

40

15/8

1088.269
 classic major seventh

41

40/21

1115.533
 -

42

64/33

1146.727
 -

43

160/81

1178.494
 octave - syntonic comma

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