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The Theory Of Sound Which Constitutes The Physical Basis Of The Art Of Music.

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II. §36.] CALCULATION OF VIBRATION-NUMBERS. 69
solitary exception of the Minor Sixth, having no­thing beyond 6, while the former bring in 9, 15 and 16.
36. By the help of this table we can calculate the vibration-numbers of all the notes within a single Octave which belong to the Major or Minor keys as soon as the vibration-number of their tonic is given. For instance, let middle C of the pianoforte (vib.-no. 264) be the tonic. From the third line of the table we see that the vibration-number of D must be to 264 in the ratio of 9 to 8. It must
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E-Book - An Annotated Compendium of Old Time American Songs by James Alverson III