本段程序包含了语音识别预处理中的采样、量化、预加重、分帧加窗等程序，另外添加了端点检测需要的短时能量、过零率的程序，经实验测试，运行结果符合理论期望-Procedures in this paragraph contains the voice recognition preprocessing sampling to quantify the pre-emphasis, framing windowed program, the addition of short-term energy ne