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vpde_lecture34 [2020/04/21 11:25] trinh |
vpde_lecture34 [2020/04/23 08:16] (current) trinh |
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< | < | ||
- | N = length(f2); | + | N = length(f); |
- | yhat = fft(f2); | + | yhat = fft(f); |
A = abs(yhat)/ | A = abs(yhat)/ | ||
K = (Fs/ | K = (Fs/ | ||
A = A(1: | A = A(1: | ||
+ | plot(K, A) | ||
</ | </ | ||
+ | |||
+ | (We noticed during the lecture that the above code is flawed by 1 element, as it indicates a peak frequency of 441Hz instead of 440Hz! I believe this is because you have to ' |