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Audio signal processing by using matlab 使用matlab处理音频信号

fp=1000;fc=1200;As=100;Ap=1;fs=22050;
wc=2*fc/fs;wp=2*fp/fs;
N=ceil((As-7.95)/(14.36*(wc-wp)/2))+1;
beta=0.1102*(As-8.7);
Win=Kaiser(N+1,beta);
b=fir1(N,wc,Win);
freqz(b,1,512,fs);