?? butterh.m
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function [ output_args ] = Untitled8( input_args )%UNTITLED8 Summary of this function goes here% Detailed explanation goes hereft=22050;Wp =2*5000/ft;Ws = 2*4800/ft;Rp = 1;Rs = 100;[N,Wn] = buttord(Wp,Ws,Rp,Rs);[b,a] = butter(N,Wn,'high');[h,w]= freqz(b,a);plot (w/pi,20*log10(abs(h)));grid;xlabel('w/pi'); ylabel('Gain, dB');title('Type Butter highpass Filter');
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