Octavation

I arranged ‘octavations’ which seemed to me to give the two movements greater elegance and litheness.

The method provides a simple control mechanism to provide spectral morphing via the octavation parameter.

OCTAVATION (also called Pitch Control) — Changing the rate of tape speed over the playback head of a tape recorder changes the pitch of the signal being played back. If the speed is doubled, the signal will increase in pitch one octave.

A French rondeau from the Roman de la Rose (12th century) first establishes the triad, then turns to the seventh, but leaves it immediately to catch the octave, only to return in haste to the safer, wonted seventh. A similar example of uncertain octavation will be described in the following section on the Fate of Quartal and Quintal Patterns.

He also once mentioned a principle of “octavation” (his term), whereby, coming to a difficult point in the evolution of a contrapuntal texture, the composer could, as it were, escape to fresh territory by the straightforward strategy of jumping a part up or down by an octave.

It may be said that the sex question is both brain stem and pelvic stem in its fourfold octavation with its stabilizing governor, the pituitary body. These consist in coördination and correlation, the sex relation of octavation of voice and pitch.

Energy is apparently transmuted by a series of octavations and that these octavations differentiate matter.

These arise when the reciprocal of the orbital periods in seconds is taken and the resulting number is equated to a frequency and finally transposed into a reference note by means of octavation.