Digital sub-band filters

Details Digital sub-band filters Digital sub-band filters

H - Electricity

03

H

328/0.6

H03H 17/02 (2006.01)

Patent

CA 1212728

DIGITAL SUB BAND FILTERS ABSTRACT A digital signal is separated into a lower frequency subband and a high frequency subband using quadrature mirror filters. The singularities of each filter, represented in the z-plane, comprise a zero on the real axis and unit radius, with other groups each contributing a symmetrical delay response. At lest one such group has a pole at r, .theta. and a zero at 1/r,.pi.-.theta..

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