很好的播放软件可以用FFT算法计算波形 有点像media9 不过完整程序有两个部分-good player software can be used FFT algorithm is a bit like a waveform integrity procedures media9 But there are two parts

接上一个程序 播放器可以实现波形的显示 还可以改变采样点个数和算法-procedures connected to a player can achieve waveform display can also change the number and sampling algorithm

Android系统音频PCM波形图绘制算法与实现- Android system audio PCM waveform drawing algorithm and implementation