中文说明：运用短时能量和过零率相结合，分别设置两个高低不同的门限值，更加精准的、能够很好的检测出语音的起始和终止点，程序完整，可以直接运行！
English Description：
Combined use of short-time energy and zero-crossing rate, respectively, set two high and low threshold, more accurately, to be able to detect the voice of starting and ending points, program integrity, you can directly run!