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+//Example 10.5
+
+clc;
+clear;
+close;
+
+fs1=64000;                  //original signal sampling frequency
+fs2=2048000;                //new sampling frequency
+df=32;                    //decimation factor of filter
+fp=30000;                   //pass band edge frequency
+fs=32000;                   //stop band edge freqeucny
+tw=2000;                    //transition width
+pbdev=0.01;              //pass band deviation in decibel
+sbatt=80;               //stop band attenuation in decibe
+
+//Calculating delta-f
+df=tw/fs2;
+//Ca;culating passband and stop band deviations
+dp=10^(pbdev/20)-1;
+ds=10^-(sbatt/20);
+
+//filter coefficients required for order of filter
+a1=0.005309;
+a2=0.07114;
+a3=-0.4761;
+a4=-0.00266;
+a5=-0.5941;
+a6=-0.4278;
+
+D={log10(ds)*[a1*log10(dp^2)+a2*[log10(dp)]+a3]}+[a4*log10(dp^2)+a5*[log10(dp)]+a6];
+f=11.01217+0.51244*(log10(dp)-log10(ds));
+N=ceil(D/df-f+1);
+disp(N,"Order of filter is ");
+
+disp(N*fs2,"Number of multiplications required is: ")