Real-time and off-line processing of continuous-time signals by digital means (digital signal processing [DSP]) has become a viable processing mode over analog means for several reasons, some of which are digital signal processors, microcontrollers, and microprocessors. These are inexpensive, programmable, reproducible, consume low power, have computing speeds suitable for signals with bandwidths beyond base band video, and can operate in extreme environments. Some broad application areas of DSP are automotive industry, consumer electronics, communication systems, and medical systems.