HomeApplying effects to a soundAudio UnitsStereo Utilities
  Amadeus Pro > Editing > Applying effects to a sound Index

5.3.8 Change Pitch and Speed

This effect allows you to change the pitch and the speed of a sound independently. It is very useful for example to constrain a recording to a certain length. The algorithm used is Appleā€™s AUPitch Audio Unit, which provides professional quality even though it is included with every copy of Mac OS X.

Increasing the quality results in a deterioration of processing speed and vice-versa. The adjustment of the pitch is done in semitones, i.e. +12 corresponds to increasing the pitch by one octave and -12 to decreasing it by one octave. If lock is selected, the speed increase/decrease exactly matches the pitch increase/decrease in such a way that the result is the same as what would be obtained by just playing the sound back at a different speed. In that case, the sound is simply resampled and does not go through the AUPitch effect.


Copyright © HairerSoft
Last updated on June 22, 2015

HomeApplying effects to a soundAudio UnitsStereo Utilities