运用数字信号学基本原理实现语音信号的处理，在matlab7.0环境下综合运用信号提取，幅频变换以及傅里叶变换、滤波等技术来进行语音信号处理。-Learn the basic principles of the use of digital signal processing to achieve the speech signal in the integrated use of signal extraction matlab7.0 environment, amplitude-frequen