Digital filter bank

Details Digital filter bank Digital filter bank

H - Electricity

03

H

328/0.3

H03H 17/02 (2006.01) H04J 4/00 (2006.01)

Patent

CA 1176317

DIGITAL FILTER BANK Abstract of the Disclosure A digital filter bank which has a discrete cosine transform section and a polyphase network section has the polyphase network section configured with a plurality of single input-double output digital filters. The filters have one of their outputs independent of their present input signal. This permits a single multiplier-accumulator to use a "memory swapping" procedure to accumulate all the requisite information from a complementary pair of the filters and to perform the necessary operations on it to compute an output value, while clearing the accumulator only once each sampling period.

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