使用MediaExtractor，MediaCodec和AudioTrack创建一个快速和简单的变调音频流播放器-A quick and dirty demo using MediaExtractor, MediaCodec and AudioTrack to create a simple pitchshifting audio stream player

利用发生机理进行语音 的合成，并且形成变速不变调和变调不变速的处理方法。-Use of the mechanism of occurrence of the synthesized speech, and forming a shift processing method does not change harmonizing shift.