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+//Example 6.34

+

+clc;clear;close;

+h=[2 2 1];

+x=[3 0 -2 0 2 1 0 -2 -1 0];

+M=length(h);                //length of impulse response

+L=2^M;                      //length of FFT/IFFT operation

+N=L-M+1;

+xl=length(x);

+K=ceil(xl/N);                //number of iterations

+h=[h zeros(1,L-M)];

+x=[x x(1:K*N-xl)];

+H=fft(h);

+y=zeros(1,M-1);

+for k=0:K-1

+    xk=[x(k*N+1:(k+1)*N) zeros(1,M-1)];

+    Xk=fft(xk);

+    Yk=H.*Xk;

+    yk=ifft(Yk);

+    yk=clean(yk);

+    y=[y(1:k*N) y(k*N+1:k*N+M-1)+yk(1:M-1) yk(M:L)];

+    disp(k+1,'Segment =');

+    disp(xk,'xk(n)=');

+    disp(yk,'yk(n)=');

+end

+y=y(1:xl+M-1);

+disp(y,'Output Sequence is y(n): ');