What are "frequency bins" ?

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Denny Muttathil
Denny Muttathil on 27 Jan 2017
Commented: Hasan Ateş on 2 Mar 2023
Hello! What exactly are frequency bins and how are they defined? I know, that these things are mentioned in the FFT. How are the linked together and does somebody can provide an example to my question?

Accepted Answer

Honglei Chen
Honglei Chen on 27 Jan 2017
frequency bins are intervals between samples in frequency domain. For example, if your sample rate is 100 Hz and your FFT size is 100, then you have 100 points between [0 100) Hz. Therefore, you divide the entire 100 Hz range into 100 intervals, like 0-1 Hz, 1-2 Hz, and so on. Each such small interval, say 0-1 Hz, is a frequency bin.
HTH
  5 Comments
Shubhankar
Shubhankar on 28 Feb 2023
And if I have FFT size of 50, will be the frequency bin will be 2Hz?
Hasan Ateş
Hasan Ateş on 2 Mar 2023
Yes, FFT size is basically the number of bins.

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