Editing Time–frequency analysis (section)

===Formulations===

There are several different ways to formulate a valid time–frequency distribution function, resulting in several well-known time–frequency distributions, such as:

*[[Short-time Fourier transform]] (including the [[Gabor transform]]),
*[[Wavelet transform]],
*[[Bilinear time–frequency distribution]] function ([[Wigner distribution function]], or WDF),
*[[Modified Wigner distribution function]], Gabor–Wigner distribution function, and so on (see [[Gabor–Wigner transform]]).
*[[Hilbert–Huang transform]]

More information about the history and the motivation of development of time–frequency distribution can be found in the entry [[Time–frequency representation]].