By Boaz Porat
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A finished, sensible and up to date exposition on electronic sign processing. either mathematical and beneficial, this e-book makes use of a rigorous method of aid readers examine the speculation and perform of DSP. It discusses functional spectral research, together with using home windows for spectral research, sinusoidal sign research, and the influence of noise. It additionally covers FIR and IIR filters, together with precise layout systems and MATLAB instruments.
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Additional info for A Course in Digital Signal Processing
CONTINUOUS-TIME SIGNALSAND SYSTEMS 13 A dynamic system (or simply a system) is an object that accepts signals, operates on them, and yields other signals. The eventual interest of the engineer is in physical systems: electrical, mechanical, thermal, physiological, and so on. However, here we regard a system as a mathematical operator. In particular, a continuous-time, singleinput, single-output (SISO) system is an operator that assigns to a given input signal x(t) a unique output signal y(t). A SISO system is thus characterized by the family of signals x(t) it is permitted to accept (the input family), and by the mathematical relationship between signals in the input family and their corresponding outputs y(t) (the output family).
Reconstruction also leads to distortions due to physical limitations on realizable (as opposed to ideal) reconstructors. These subjects occupy the main part of the chapter. Chapter 3 also includes a section on physical aspects of sampling: digitaHo-analog and analog-to-digital converters, their operation, implementation, and limitations. Three chapters are devoted to frequency-domain digital signal processing. Chapter 4 introduces the discrete Fourier transform (DFT) and discusses in detail its properties and a few of its uses.
In such cases, the undesirable random signal is usually called noise. Occasionally "noise" is understood as a synonym for a random signal, but more often it is used only when the random signal is considered harmful or undesirable. 22 CHAPTER 2. REVIEW OF FREQUENCY-DOMAIN ANALYSIS in the same physical units as the random variable itself. For example, if the random variable is a voltage across the terminals of a battery, the mean and the standard deviation are measured in volts, whereas the variance is measured in volts squared.
A Course in Digital Signal Processing by Boaz Porat