SoundTouch is an open-source audio processing library for changing
the Tempo, Pitch and Playback Rates of audio streams or audio files
Tempo (time stretch): Changes the sound to play at faster or
slower tempo than originally without affecting the sound pitch.
Pitch (key): Changes the sound pitch or key while keeping the
original tempo (speed).
Playback Rate: Changes both tempo and pitch together as if a
vinyl disc was played at different RPM rate.
The SoundTouch library is intended for application developers
writing sound processing tools that require tempo/pitch control
functionality, or just for playing around with the sound effects.
