Time-frequency representation of digital signals and systems based on short-time Fourier analysis
Time-frequency representation of digital signals and systems based on short-time Fourier analysis
M. Portnoff
1980 · DOI: 10.1109/TASSP.1980.1163359
672 Citations
TLDR
A representation for discrete-time signals and systems based on short-time Fourier analysis is developed and it is shown that a class of linear-filtering problems can be represented as the product of the time-varying frequency response of the filter multiplied by the short- time Fourier transform of the input signal.