Usage of filters with symmetrical amplitude-frequency characteristics in the conveyor frequency
Annotation
The article analyzes the method of multi-channel digital filtration and conveyor frequency transformation. The qualitative distinction of this method is formulated in fragmentation of the whole processing procedure into a number of successively performed homo- typic stages. The main operations used for realization of conveyor frequency transformation are heterodyne mixing, filtration and decimation. The article researches frequency characteristics of channels in the conveyor frequency transformation. It shows the possibility to use filters with symmetrical amplitude-frequency response for decreasing hardware expenses and problems which occur at the same time.
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