soundtouch源码分析__based on csdn :
1. soundtouch介绍和相关资源 The SoundTouch Library Copyright © Olli Parviainen 2001-2014 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 w...