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{{Short description|Concept in signal processing}}
In the theories of [[modulation]] and of [[stochastic process]]es, '''random modulation''' is the creation of a new signal from two other signals by the process of [[quadrature amplitude modulation]]. In particular, the two signals are considered as being [[random process]]es. For applications, the two original signals need have a limited frequency range, and these are used to modulate a third sinusoidal [[carrier signal]] whose frequency is above the range of frequencies contained in the original signals.
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