Introduction &. Consider the first-order iir digital filter yIn=ayln-1+xn where yln is the output signal and xin is the input signal When implemented on a digital machine the filter coeficient a can assume only e certain discrete values a approximating the original design value aIntroduction • Consider the first-order IIR digital filter y[n]= y[n-1]+x[n] where y[n] is the output signal and x[n] is the input signal  ^ • When implemented on a digital machine, the filter coefficient  can assume only certain discrete values approximating the original design value 