= Instantaneous phase and frequency
{wiki=Instantaneous_phase_and_frequency}
Instantaneous phase and instantaneous frequency are concepts primarily used in the analysis of signals, particularly in the context of time-varying signals in fields like signal processing, communications, and wave analysis. \#\#\# Instantaneous Phase - **Definition**: The instantaneous phase of a signal refers to the phase of the signal at any given point in time. It can be derived from the complex representation of a signal, typically expressed in terms of sine or cosine functions.
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