中文说明：有PMUSIC 校正前和校正后的比较，包括脚本文件和函数文件形式，正确率可以达到98％，FIR 底通和带通滤波器和IIR 底通和带通滤波器，对于初学matlab的同学会有帮助，用于信号特征提取、信号消噪。
English Description：
Correction PMUSIC before and after correction of the comparison, including scripts and functions file form, the correct rate can reach 98%, at the bottom of the fir pass and band-pass filter and IIR bottom pass and band-pass filter, for the beginner will help students in MATLAB for signal feature extraction, signal denoising.