ABSTRACT
To consider the hardware implementation of a digital filter, the chapter must considers the particular application. The value of parameters such as order, sampling rate, output signal-to-noise ratio will have a bearing on the hardware choices to be made. This chapter discusses how an analogue signal has to be prepared for digital processing and how it can be recovered after processing. The digital signal processing (DSP) microprocessor was developed specifically to increase data throughput for digital signal-processing algorithms. These are characterized by large numbers of multiply-add operations per unit time. The chapter considers hardware aspects of digital filter implementation. As in many design problems, the solution depends on the total specification, i.e., the filtering requirements and the environment in which the filter will operate. For many applications the DSP processor represents a very efficient solution which, in some circumstances, can be a single-chip solution. The range of DSP devices is very large, and performance is greatly enhanced in each new generation.
