Chapter 3

Sampling, Aliasing, and Quantization

Abstract

This chapter reviews the sampling of a signal and its conversion from the analog to the digital domain. Analog to digital converter measures the signal at rapid intervals is called samples, which outputs a digital signal proportional to the amplitude of an analog signal. The chapter throws light on sampling at low and high frequencies, the effects of revolution with time. Nyquist sampling rule is discussed in detail which leads to the elements of quantization. The effect of noise in increasing or decreasing the signal has also been discussed along with the concept of decibels. Decibel is a signal-to-power ratio and expressed logarithmically, which allows chains of circuits to process it. The ...

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