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Solutions Manual
for Digital Signal Processing using Matlab - Second Edition
¨ÏVinay K. Ingle 2007
2
Solutions Manual for DSP using Matlab (2nd Edition)
2006
Chapter 2
Discrete-Time Signals and Systems
P2.1 Generate the following sequences using the basic Matlab signal functions and the basic Matlab signal operations discussed in this chapter. Plot signal samples using the stem function. 1. x1 (n) ¡ë 3¥ä(n + 2) + 2¥ä(n) ? ¥ä(n ? 3) + 5¥ä(n ? 7), ?5 ¡Â n ¡Â 15 % P0201a: x1(n) ¡ë 3*delta(n + 2) + 2*delta(n) - delta(n - 3) + % 5*delta(n - 7), -5 [¡ë n [¡ë 15. clc; close all; x1 ¡ë 3*impseq(-2,-5,15) + 2*impseq(0,-5,15) - impseq(3,-5,15) ... + 5*impseq(7,-5,15); Hf_1 ¡ë figure; set(Hf_1,¡¯NumberTitle¡¯,¡¯off¡¯,¡¯Name¡¯,¡¯P0201a¡¯); n1 ¡ë [-5:15]; Hs ¡ë stem(n1,x1,¡¯filled¡¯); set(Hs,¡¯markersize¡¯,2); axis([min(n1)-1,max(n1)+1,min(x1)-1,max(x1)+1]); xlabel(¡¯n¡¯,¡¯FontSize¡¯,LFS); ylabel(¡¯x_1(n)¡¯,¡¯FontSize¡¯,LFS); title(¡¯Sequence x_1(n)¡¯,¡¯FontSize¡¯,TFS); set(gca,¡¦(»ý·«)