§6.2B asic bu Iding blc OCkS The computational algorithm of an lti digital filter can be conveniently represented in block diagram form using the basic building blocks shown below x→y ylb Multiplier Adder xn Unit delay Pick-off node§6.1.2 Basic Building Blocks • The computational algorithm of an LTI digital filter can be conveniently represented in block diagram form using the basic building blocks shown below x[n] y[n] w[n] + A x[n] y[n] y[n] −1 x[n] z x[n] x[n] x[n] Adder Unit delay Multiplier Pick-off node