ABSTRACT
This chapter deals with computer-based signal analysis and explains tools and their utility for signal and system analysis by means of computer. MATLAB is a vector- or array-based program. MATLAB has programs that can be used for filter design and signal analysis. In recent years several mathematical packages have appeared for signal and system analysis on computers. MATLAB has several statistical data analysis functions. Among these are random number generation, sample mean and standard deviation computation, histogram plotting, and correlation coefficient computation for pairs of random data. MATLAB has several toolboxes available for implementing special computations involving such areas as filter design and image processing. The special functions are available in the signal processing toolbox. A linear system, or filter, can be specified by the numerator and denominator polynomials of its transfer function. MATLAB can manipulate variables symbolically. These include algebra with scalar expressions, matrix algebra, linear algebra, calculus, differential equations, and transform calculus.
