运行sound_main。先利用声卡采集声音信号，并保存为wav格式文件。然后可以读取wav格式文件，分析其幅度，相位，功率等等。-Run sound_main. Acoustic signals collected by the sound card first, and saved as wav format files. Wav format file can then be read and analyze the amplitude, phase, power and so on.