Sampling Theory
The pure and simple truth is rarely pure and never simple.
Oscar Wilde (1854–1900) Irish writer and poet
7.1 Introduction
Since many of the signals found in applications such as communications and control are analog, if we wish to process these signals with a computer it is necessary to sample, quantize, and code them to obtain digital signals. Once the analog signal is sampled in time, the amplitude of the obtained discrete-time signal is quantized and coded to give a binary sequence that can be either stored or processed with a computer.
The main issues considered in this chapter are:
How to sample—As we will see, it ...
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