Harry Partch Ratio Representation Project


by Brian Harlan and Arun Chidambaram



V. Examples

In order to visualize the relationships between Partch’s “Monophonic” resources, the ratios inputted are then plotted onto a chart Partch developed called the “One-Footed Bride.”  The chart shows all forty-three tones, as well as the twelve tones of equal temperament.  The ratios are presented in two columns opposite their “compliment” (inversion).  The tones ascend from the 1/1 beginning at the bottom of the left column until the first compliment is reached, and then continue to ascend by coming back “down” the right column to the 2/1.  The chart also shows “primary” and “secondary” ratios, which indicates whether they were produced by successive integers (and their multiples), or by adding ratios together.  Finally, the One-Footed Bride also reveals categories of intervals, and their relative intensities, as perceived by Partch. There are four interval categories:     

Intervals of Power =1/1, 3/2; 4/3, 2/1 (perfect intervals)

Intervals of Suspense= 27/20, 11/8, 7/5; 10/7, 16/11, 40/17 (tritone intervals)

Intervals of Emotion= 32/21, 6/5, 11/9, 5/4, 14/11, 9/7, 21/16; 32/21, 14/9, 11/7, 8/5, 18/11, 5/3,12/7 (thirds and sixths)

Intervals of Approach= 81/80, 33/32, 21/20, 16/15, 12/11, 11/10, 10/9, 9/8, 8/7; 7/4, 16/9, 9/5,20/11, 11/6, 15/8, 40/21, 64/33, 160/81 (seconds and sevenths)

 

Ex. 1

**Monophonic Resources*

43 Tones within the Octave     Listen

1/1

81/80

33/32

21/20

16/15

12/11

11/10

10/9

9/8

8/7

7/6

32/27

6/5

11/9

5/4

14/11

9/7

21/16

4/3

27/20

11/8

7/5

10/7

16/11

40/27

3/2

32/21

14/9

11/7

8/5

18/11

5/3

27/16

12/7

7/4

16/9

9/5

20/11

11/6

15/8

40/21

64/33

160/81

2/1

##

 

 

[NOTE: In examples 2-4, 1/1is added at the beginning of the file in order to provide a reference point.  1/1 is an interval of Power.]

Ex. 2

*Intervals of Emotion          Listen

1/1

1/1

7/6

32/27

6/5

11/9

5/4

14/11

9/7

21/16

32/21

14/9

11/7

8/5

18/11

5/3

27/16

12/7

##

 

Ex. 3

*Intervals of Suspense           Listen

1/1

1/1

27/20

11/8

7/5

10/7

16/11

40/27

##

 

Ex. 4

*Intervals of Approach             Listen

1/1

1/1

81/80

33/32

21/20

16/15

12/11

11/10

10/9

9/8

8/7

7/4

16/9

9/5

20/11

11/6

15/8

40/21

64/33

160/81

##

 

Ex. 5

*Intervals of Power          Listen

1/1

1/1

4/3

3/2

2/1

##

 

Examples 6-9 present primary tonalities as they are revealed in Partch’s “Tonality Diamond.”  Otonalities (“major” tonalities) are read from 1/1-7/4, 16/9-14/9, 8/5-7/5,etc.; Utonalities (minor tonalities) are read from 8/7-1/1, 9/7-9/8, 10/7-5/4,etc. Tonalities are determined by the “numerary nexus” of ratios.  For example, all intervals with an under number of 7 (8/7, 9/7, 10/7, etc.) create a distinct tonality.

 

 

Ex. 6

**Tonality Diamond Hexachords

*Otonality of Unity              Listen

1/1

9/8

5/4

11/8

3/2

7/4

##

 

Ex. 7

*Utonality of Unity              Listen

8/7

4/3

11/16

8/5

16/9

1/1

##

 

Ex. 8

*Primary Otonalities             Listen

1/1

9/8

5/4

11/8

3/2

7/4

16/9

9/9

10/9

11/9

4/3

14/9

8/5

9/5

5/5

11/10

6/5

7/5

16/11

18/11

20/11

11/11

12/11

14/11

4/3

3/2

5/3

11/6

3/3

7/6

8/7

9/7

10/7

11/7

12/7

7/7

##

 

Ex. 9

*Primary Utonalities               Listen

8/7

4/3

11/16

8/5

16/9

1/1

9/7

3/2

18/11

9/5

9/9

9/8

10/7

5/3

20/11

5/5

10/9

5/4

11/7

11/6

11/11

11/10

11/9

11/8

12/7

3/3

12/11

6/5

4/3

3/2

7/7

7/6

14/11

7/5

14/9

7/4

##

 

 

Ex. 10

**Ptolemaic Scales [from Harmonics]

*Enharmonic Tetrachord                  Listen

1/1

28/27

16/15

4/3

##

 

Ex. 11

*Chromatic Tetrachord                   Listen

1/1

28/27

10/9

4/3

##

 

Ex. 12

*Diatonic Tetrachord                     Listen  

1/1

16/15

6/5

4/3

##

 

Ex. 13

*Enharmonic Scale                        Listen                

3/2

14/9

8/5

1/1

9/8

7/6

6/5

3/2

##

 

Ex. 14

*Chromatic Scale                           Listen

1/1

16/15

10/9

4/3

3/2

8/5

5/3

2/1

##

 

 

Ex. 15

*Diatonic Scale                             Listen

1/1

12/11

6/5

4/3

3/2

18/11

9/5

2/1

##

 

Ex. 16

*Olympos Pentatonic                          Listen

9/8

6/5

3/2

8/5

2/1

9/8

##

 

 

Ex. 17

**Non-Western Scales

*Chinese sequence [circa300BC]                Listen

1/1

8/7

6/5

5/4

4/3

3/2

5/3

2/1

##

The last example does not produce a visual output.  Each ratio (NOTE: 0503 = 5/3, 0403 = 4/3, etc.) occurs for .25 seconds.  Therefore, in order to achieve sixty quarter notes per second, a ratio must be inputted four times.  Polyphony is possible by adding ratios together.

Ex. 18

**Score Excerpt

*”By the Rivers of Babylon” [mes. 21-29]            Listen

 

a0503+a0403 a0503+a0403 a0503+a0403 a0503+a0403 a0503 a0503 a0503 a0503 a0503+a0706 a0503+a0706 a0503+a0706 a0503+a0101 a0503+a2011 a0503 a0503+a0504 a0503 a0504+a0503 a0504+a0503 a0504+a0503 a0504+a0503  a0504+a1811+a0101 a0504+a1811+a0101 a0504+a1811+a0101 a0504+a1811+a0101 a0504+a0805+a0101 a0504+a0805+a0101 a0504+a0805+a0101 a0504+a0805+a0101 a0504+a1409+a0101 a0504+a1409+a0101 a0504+a1409+a0101 a0504+a1409+a0101 a0504+a0302+a0905 a0504+a0302+a0905 a0504+a0302+a0905 a0504+a0302+a0905 a0504+a0302+a0101 a0504+a0302+a0101 a0504+a0302+a0101 a0504+a0302+a0101 a0504+a1409+a0101 a0504+a1409+a0101 a0504+a1409+a0101 a0504+a1409+a0101 a0504+a0805+a0101 a0504+a0805+a0101 a0504+a0805+a0101 a0805+a0101 a0504+a0101+a0503 a0504+a0101+a0503 a0504+a0101+a0503 a0504+a0101+a0503 a0504+a6433+a0805 a0504+a6433+a0805 a0504+a6433+a0805 a0504+a6433+a0805 a0504+a1508+a1409 a0504+a1508+a1409 a0504+a1508+a1409 a0504+a1508+a1409 a0504+a1106+a0302 a0504+a1106+a0302 a0504+a1106+a0302 a0504+a1106+a0302 a0504+a0302+a1106 a0504+a0302+a1106 a0504+a0302+a1106 a0504+a0302+a1106 a0504+a1611+a0905 a0504+a1611+a0905 a0504+a1611+a0905 a0504+a1611+a0905 a0504+a1007+a0704 a0504+a1007+a0704 a0504+a1007+a0704 a0504+a1007+a0704 a0504+a0302+a0908 a0504+a0302 a0504+a0302+a0101 a0302 a0504+a1409+a1211 a0504+a1409+a1211 a0504+a1409+a1211 a0504+a1409+a1211 a0504+a1409+a0101 a0504+a1409+a0101 a0504+a1409+a0101 a0504+a1409+a0101 a0504+a0202+a0503 a0504+a0202+a0503 a0504+a0202+a0503 a0504+a0202+a0503 a0504+a0805+a0101 a0504+a0805+a0101 a0504+a0805+a0101 a0504+a0805+a0101 a0504+a1409+a0908 a0504+a1409+a0908 a0504+a1409+a0908 a0504+a1409+a0908 a0504+a0302 a0504+a0302 a0504+a0302 a0504+a0302 a0504+a0302 a0504+a0302 a0504+a0302 a0504+a0302 a0101+a0504+a0908 a0101+a0504+a0302 a0101+a0504+a0101 a0101+a0504+a0302 a0504+a0302+a0908+a0101 a0504+a0302+a0908+a0101 a0504+a0302+a0908+a0101 a0504+a0302+a0908+a0101 a0504+a0302+a0908+a0101 a0504+a0302+a0908+a0101 a0504+a0302+a0908+a0101 a0504+a0302+a0908+a0101 a0504+a0101+a0908+a0302 a0504+a0101+a0908+a0302 a0504+a0101+a0908+a0302 a0504+a0101+a0908+a0302 a0504+a0101+a0908+a0302 a0504+a0101+a0908+a0302 a0504+a0101+a0908+a0302 a0504+a0101+a0908+a0302 a0504+a4021 a0504+a4021 a0504+a4021 a0504+a4021 a0504+a4021 a0504+a4021 a0504+a4021 a0504+a4021 a0504+a0805 a0504+a0805 a0504+a0805 a0504+a0805 a0504+a0805 a0504+a0805 a0504+a0805 a0504+a0805

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Introduction  2 3 4  | Ratio Notation  |  Partch’s Theory of" Monophony”  |  Implementation  | Examples

 

 

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