A set of signal processing techniques used to characterize how the frequency content of a signal changes over time. Unlike a standard Fourier transform that only shows frequencies present in the entire signal, this analysis maps signals onto a two-dimensional plane. It is essential for analyzing non-stationary signals like human speech, radar pulses, or transient network noise.
The time-frequency analysis showed a distinct chirp signal sweeping across the band right when the link dropped.
Related terms
Time-frequency representation
A mathematical view of a signal that maps its amplitude across both time and frequency axes simultaneously.
Frequency
The number of cycles a radio wave or alternating current completes per second.
Signal
An electrical or electromagnetic variation that transmits data or voice from one point to another.