Extracting frequency from fft command
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I found a post for you that asking about code for extracting particular frequency from fft,if you don't mind, i need something like that in another algorithm.
Thanks,
回答（1 个）
Matt J
2013-10-17
For an N-point fft with time sampling interval T, the output of fftshift(fft(...)) has frequency axis (Hz) given by,
fAxis=( (0:N-1) -ceil((N-1)/2) )/N/T;
2 个评论
saad
2013-10-17
Tewodros Abebe
2021-6-6
Sorry, i need to shift center frequency in 2/T. so how can i plot?
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2021-6-6
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