Bandlimiting
Limiting a signal to contain only low-frequency components / From Wikipedia, the free encyclopedia
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Bandlimiting refers to a process which reduces the energy of a signal to an acceptably low level outside of a desired frequency range.
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Bandlimiting is an essential part of many applications in signal processing and communications. Examples include controlling interference between radio frequency communications signals, and managing aliasing distortion associated with sampling for digital signal processing.