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20 lines
303 B
Matlab
20 lines
303 B
Matlab
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% Show testbench results for sd2dac
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% This is a MATLAB file
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fileID = fopen('bin/dacout.sw');
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A = fread(fileID,'*int32')';
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fclose(fileID);
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A = single(A)/2^31;
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clf;
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figure(1);
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X = fft(A.*blackman(length(A))') / (length(A)/4);
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semilogx(20*log10(abs(X)));
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grid on;
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axis([0 length(X)/2 -140 10]);
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