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IEVref:702-04-54ID:
Language:enStatus: Standard
Term: amplitude (of a signal)
Synonym1: envelope (of a signal)
[Preferred]
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Definition: the modulus A(t) of the analytic signal corresponding to the real signal f(t), written in the form:

f (t) + j g (t) = A (t) eiφ(t)

NOTE – When a modulated signal is represented by E(t)cos [2πft + θ(τ)] in which f is substantially larger than the highest frequency of any significant spectral component of the modulating signal, the enveloppe is approximately represented by the curve y = E(t).


Publication date:1992-03
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