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diff --git a/3788/CH5/EX5.2.2/Ex5_2_2.sce b/3788/CH5/EX5.2.2/Ex5_2_2.sce
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+//Example 5.2.2
+//Calculate the baseband SN ratio for the Voice channel
+
+//Variables
+clc
+clear
+Fmax = 3.4
+Brf = 45
+Rs = 9.6
+P = 8.8
+SNratio = 7
+CNratio = 13
+
+//result
+delFpk = Brf/2 - Fmax
+SNfm = CNratio + 10*log10(Brf/Fmax) + 20*log10(delFpk/Fmax) + 1.8 + P
+printf("The baseband SN ratio for the voice channel is %f dB ",SNfm)