Low-pass-filter definition

lōpăs
A filter designed to transmit electromagnetic frequencies below a certain value, while excluding those of a higher frequency.
noun
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A device that passes all signals below a designated frequency (electrical) or wavelength (optical) band, but absorbs, attenuates, blocks, rejects, or removes all other signals. See also absorption, attenuation, band, band-pass filter, electrical, frequency, high-pass filter, optical, signal, and wavelength.
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