MECHANICS OF THE INNER EAR 



IO9 



the third, fourth, and sixth provisional assumptions, are shown 



in the following table, which contains the 



The relative number of partition sections conveying 



intensities each tone in absolute numbers as well as 



in percentages. 



Since in the case just studied the higher of the two primary 

 tones, though weak, is yet audible, let us still further change the 

 relative intensities of the objective tones in favor of the lower one. 

 The curve in figure 34 represents the function 

 f(x) = 3sin5;r -+- sin8.nr. 



This signifies that the stirrup move- 

 ment eight has an amplitude which is only 

 one-third of the amplitude of the stirrup 

 movement five. The table below contains 

 all the abscissa and ordinate values of the 

 maxima and minima and of the inflection 

 points of the curve. 



The combina- 

 tion 5 and 8. 

 Amplitude of 8 

 still less 



