MATLAB

代码说明：

说明：  filter audio signalThen use the Butter function, for instance to obtain your signal(type Butter in your Matlab command window and you will find many other type of filters). Once you have obtained the B and A vector coefficients you can filter your signal using the function filter. y=filter(x,A,B) x(is your input signal) and y your filtered signal.(an example filtering signalThen use the Butter function, for instance to obtain your signal(type Butter in your Matlab command window and you will find many other type of filters). Once you have obtained the B and A vector coefficients you can filter your signal using the function filter. y=filter(x,A,B) x(is your input signal) and y your filtered signal.)