matlab 读取一段wav格式文件，进行试听，频率检测和语音信号的分析，再进行噪声处理，IIR低通滤波，IIR高通滤波，FIR低通滤波，FIR高通滤波，最后输出处理过的语音信号并试听处理过的语音文件。-Matlab read a wav format file, audition, frequency detection and analysis of speech signals, and noise, IIR low pass filter, IIR high pass filter, FIR low pass filter, FIR high pass filter, finally outputting the processed voice signal and the processed speech audition.