... advantages of digital signal processing insteadof analog signal processing, even though digital signal processing requires morecircuits compared to analog signal processing? x(n)y(n)z−1z−1z−1ΣΣΣΣFigure ... digital signalprocessing is found in hearing aids and cardiac pacemakers.5. Image Processing. Image enhancement, image restoration, image under-standing, computer vision, radar and sonar processing, ... [3].Hence digital signal processing is restricted to approximately one megahertz,and analog signal processors are necessary for processing signals above thatfrequency, for example, processing of radar...