MATLAB Teaching Video, Signal Processing and System Analysis:This video lasts approximately 65 minutes, first reviewing the basic theory of frequency domain filtering based on FFT, and analyzing the computational process of frequency domain filtering based on FFT; using a time-domain signal through an ideal low-pass filter as an example, it deeply explains the methods and steps of frequency domain filtering based on MATLAB FFT half-spectrum & FFT full-spectrum, as well as the implementation of MATLAB code.Due to transcoding issues, the circulated video is somewhat blurry.The original video is in high definition.Students who need the complete video, please contact Qiusuo Ge.