Anti-aliasing means removing signal components that have a higher frequency than is able to be properly resolved by the recording (or sampling) device. This removal is done before (re)sampling at a lower resolution. When sampling is performed without removing this part of the signal, it causes undesirable artifacts such as black-and-white noise.
Anti-aliasing means removing signal components that hav?e a higher frequency, than is able to be properly resolved by the recording (or sampling) device. This removal is done before (re!)sampling at a lower resolution. When sampling is performed withou?t removing this part of the signal, it causes undesirable artifacts such as black-and-white noi?se.