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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /830/CH10/EX10.6.1/Sampling_Rate_Conversion_Decimation.sce | |
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Diffstat (limited to '830/CH10/EX10.6.1/Sampling_Rate_Conversion_Decimation.sce')
| -rwxr-xr-x | 830/CH10/EX10.6.1/Sampling_Rate_Conversion_Decimation.sce | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/830/CH10/EX10.6.1/Sampling_Rate_Conversion_Decimation.sce b/830/CH10/EX10.6.1/Sampling_Rate_Conversion_Decimation.sce new file mode 100755 index 000000000..6ee05b0f2 --- /dev/null +++ b/830/CH10/EX10.6.1/Sampling_Rate_Conversion_Decimation.sce @@ -0,0 +1,48 @@ +//Graphical//
+//Example 10.6.1
+//Multistage Implementation of Sampling Rate Conversion
+//Decimation factor D = 50
+//D = D1xD2, D1 = 25, D2 =2
+clear;
+clc;
+close;
+Fs = 8000; //Sampling Frequency = 8000Hz
+Fpc = 75; //Passband Frequency
+Fsc = 80; //Stopband Frequency
+Delta_F = (Fsc-Fpc)/Fs; //Transition Band
+Pass_Band = [0,Fpc];
+Transition_Band = [Fpc,Fsc];
+Delta1 = (10^-2); //Passband Ripple
+Delta2 = (10^-4); //Stopband Ripple
+D = Fs/(2*Fsc); //Decimation Factor
+//Decimator Implemented in Two Stages
+D1 = D/2; //Decimator 1
+D2 = 2; //Decimator 2
+//Decimator Single Stage Implementation
+M = ((-10*log10(Delta1*Delta2)-13)/(14.6*Delta_F))+1;
+M = ceil(M)
+//Decimator Multistage Implementation
+//First Stage Implementation
+F1 = Fs/D1; //New passband for stage1
+Fsc1 = F1-Fsc; //New Stopband for stage1
+Delta_F1 = (Fsc1-Fpc)/Fs //New Transition for stage1
+Delta11 = Delta1/2; //New Passband Ripple
+Delta21 = Delta2; //Stopband Ripple same
+M1 = ((-10*log10(Delta11*Delta21)-13)/(14.6*Delta_F1))+1
+M1 = floor(M1)
+//Second Stage Implementation
+F2 = F1/D2; //New passband for stage2
+Fsc2 = F2-Fsc; //New Stopband for stage2
+Delta_F2 = (Fsc2-Fpc)/F1 //New Transition for stage2
+Delta12 = Delta1/2; //New Passband Ripple
+Delta22 = Delta2; //Stopband Ripple same
+M2 = ((-10*log10(Delta12*Delta22)-13)/(14.6*Delta_F2))+1
+M2 = floor(M2)
+disp('The Filter length Required in Single stage Implementation of Decimator is:')
+M
+disp('The Filter length Required in Multistage Implementation of Decimator is:')
+M1+M2
+//Calculation of Reduction Factor
+R = M/(M1+M2);
+disp('The Reduction in Filter Length is:')
+R
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