loop becomes terminated after i=1 it is not continuing

for i=1:nb-1
    % framing
    fe1_buf= fe1(((i-1)*FR_LEN)+1:(i*FR_LEN));
    fe2_buf = fe2(((i-1)*FR_LEN)+1:(i*FR_LEN));
    ne_buf = ne(((i-1)*FR_LEN)+1:(i*FR_LEN));
    % fe1_buf_1=[fe1_buf(((i-1)*(FR_LEN/2)+1:(i*(FR_LEN)/2))) fe1_buf((i*(FR_LEN/2)):i*(FR_LEN/2)+128)]';
    % fe2_buf_1=[fe2_buf(((i-1)*(FR_LEN/2)+1:(i*(FR_LEN)/2))) fe2_buf((i*(FR_LEN/2))+1:i*(FR_LEN/2)+128)];
    %
    x1=fe1_buf'*w1';
    x2=fe2_buf'*w1';
    X1=(fft(x1,2*fl))';
    X2=(fft(x2,2*fl))' ;
    A=(1-z)*(abs(X1(i)))*(abs(X1(i)))+(1-z)*(abs(X2(i)))*(abs(X2(i)));
    H1=fft(h1,2*fl);
    H2=fft(h2,2*fl);
    H1=(X1(i)*E1(i))/A;
    H2=(X2(i)*E1(i))/A;
    r1=ifft(H1,2*fl);
    r2=ifft(H2,2*fl);
    c1=r1(i)*[eye(fl) zeros(fl,fl);zeros(fl,fl) zeros(fl,fl)];
    c2=r2(i)*[eye(fl) zeros(fl,fl);zeros(fl,fl) zeros(fl,fl)];
    C1=fft(c1,2*fl);
    C2=fft(c2,2*fl);
    H1=H1+mu*H1;
    H2=H2+mu*H2;
    %
    % for decrease of load X coefficients
    p1=fft(refbuff1(i),2*fl);
    p2=fft(refbuff2(i),2*fl);
    temp2(i+1)=(p1(i+1)-p1(i)*1i);
    temp3(i+1)=(p2(i+1)-p2(i)*1i);
    %for y(n) in F.D  multiply updated filter coefficients and add both
    t1= p1*H1;
    t2= p2*H2;
    t=t1(i)+t2(i);
    %y(n) in T.D
    y=ifft(t,2*fl);
    Y=y(i)*[zeros(fl,fl) eye(fl)*1i;zeros(fl,fl) eye(fl)];
    %calculating error
    err=ne_buf-(real(Y(i)));
    %windowing and fft for err
    E=err*w2';
    E1=fft(E,2*fl);
    err(i)=err(i+1)+err(i);
end

Answer 1

[Jos (10584)]

i loops from 1 to nb-1, so ... did you check the value of nb?