Introduction Consider the first-order iir digital filter yIn=ayn-1+x/n where yIn is the output signal and xn is the input signal When implemented on a digital machine, the filter coefficient o can assume only certain discrete values a approximating the original design value aIntroduction • Consider the first-order IIR digital filter y[n]= αy[n-1]+x[n] where y[n] is the output signal and x[n] is the input signal α ^ • When implemented on a digital machine, the filter coefficient α can assume only certain discrete values approximating the original design value α