What are "frequency bins" ?

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?

Answer 1

[Honglei Chen]

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

[Denny Muttathil]

Thanks for explaining it! I appreciate it.

[Omkar Joshi]

Does that mean that a particular bin, say bin number one will contain data corresponding to all sampled frequencies between 0-1 Hz?

[Mohd Nurul Al Hafiz Shaábani]

Yes.

[Shubhankar]

And if I have FFT size of 50, will be the frequency bin will be 2Hz?

[Hasan Ateş]

Yes, FFT size is basically the number of bins.