Design of digital filters and filter banks by optimization: Applications

DURING the last two decades, the role of digital signal processing (DSP) has changed drastically. Twenty years ago, DSP was mainly a branch of applied mathematics. At that time, the scientists were aware of how to replace continuous-time signal processing algorithms by their discrete-time counterparts providing many attractive properties. These include, among others, a higher accuracy, a higher reliability, a higher flexibility, and, most importantly, a lower cost and the ability to duplicate the product with exactly the same performance.