Text: From the above table we can see that the fundamentals of the Octave generate the Summation Tone of C which coincides with the 3rd partial of the lower tone, so in the case of the Octave no new element is introduced however the Summation Tone is present. All of the other intervals must be treated in like manner. The first beat is from the Fourth which comes near beating distance of the 2nd partial of C: 400 + 300 = 700; 2nd partial of C is 800; therefore 800 - 700 = 100.

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