Acoustics & Sound For Musicians - Online Book

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

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190            SUBTRACTION OF INTERVALS.         [IX. 97.
Thus multiplication and division of vibration-fractions correspond to addition and subtraction of intervals1.
97. One of the simplest cases of our second rule occurs when an interval has to be inverted. The ' inversion' of any assigned interval narrower than an Octave is the difference between it and an Octave, i.e. the interval which remains after it has been subtracted from an Octave. Thus to find the
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E-Book - An Annotated Compendium of Old Time American Songs by James Alverson III