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33 lines
847 B
Matlab
33 lines
847 B
Matlab
11 years ago
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close all
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clear all
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up = 24;
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down = 25;
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d_rate = up/down;
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Fs = 100; % Arbitrary sample rate (used for displays)
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Fsin = 1;
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% Create a sine wave
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t = 0:1/Fs:1-1/Fs;
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sig = sin(2*pi*t);
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out = arb_resample_nearest(sig,d_rate);
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% matlab resample for comparison
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out2 = resample(sig, up, down);
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figure;hold on;title('Ours and matlabs');
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l = min(length(out), length(out2));
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stem(out(1:l));
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stem(out2(1:l), 'r', 'filled');
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diff = out2(1:l)-out(1:l);
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figure;plot(diff);title('Difference between ours and matlabs');
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figure; hold on;title('Original and resampled - no time scaling');
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stem(sig);
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stem(out, 'r', 'filled');
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% Time align and plot
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figure;hold on;title('Original and resampled - with time scaling');
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stem((1:75)/Fs,real(sig(1:75)));
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stem((1:72)/(Fs*d_rate),real(out(1:72)),'r','filled');
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xlabel('Time (sec)');ylabel('Signal value');
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