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+//clear//
+//Caption:u-Law companding
+//Figure5.13(a)Mulaw companding Nonlinear Quantization
+//Plotting mulaw characteristics for different 
+//Values of mu
+clc;
+x = 0:0.01:1; //Normalized input
+mu = [0,5,255];//different values of mu
+for i = 1:length(mu)
+  [Cx(i,:),Xmax(i)] =  mulaw(x,mu(i));
+end
+plot2d(x/Xmax(1),Cx(1,:),2)
+plot2d(x/Xmax(2),Cx(2,:),4)
+plot2d(x/Xmax(3),Cx(3,:),6)
+xtitle('Compression Law: u-Law companding','Normalized Input |x|','Normalized Output |c(x)|');
+legend(['u =0'],['u=5'],['u=255'])