I'm looking for a way (preferably already implemented in eg. python) of estimating a phase for a specified freq band.
When I'm performing FFT on the signal, I can determine components frequencies as well as phases of interesting components. If I understand this well, a single complex number in the FFT result table is, in fact, a representation of some (small and determined by the sampling rate and length of signal) freq band. But what if I want specific a frequency band on my own? Eg. I want to estimate a phase (single number) for a frequency band of 9-11 Hz. I guess even it's possible, some information will be lost. But can I do that?
Thank you in advance.