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Definition of "Guard Band" |
A vacant frequency band, adjacent to an active band, that lessen the chance of interference between frequency channels. The unrecorded space between two adjacent recorded tracks on the magnetic tape. / In radio, a guard band is an unused part of the radio spectrum between radio bands, for the purpose of preventing interference. It is a narrow frequency range used to separate two wider frequency ranges to ensure that both can transmit simultaneously without interfering each other. / In signal processing and related disciplines, aliasing is an effect that causes different signals to become indistinguishable or aliases of one another when sampled. It also refers to the distortion or artifact that results when the signal reconstructed from samples is different from the original continuous signal. / a design technique for a color CRT intended to improve the purity performance of the device by making the lighted area of the screen smaller than the theoretical tangency condition of the device geometry. |
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