Digital signal sub-band separating/combining apparatus...

Details Digital signal sub-band separating/combining apparatus... Digital signal sub-band separating/combining apparatus...

H - Electricity

04

J

H04J 1/08 (2006.01) H03H 17/02 (2006.01)

Patent

CA 2319299

An apparatus having a band-separating filter bank for separating a digital signal into a plurality of sub-band signals, to be processed or transmitted, and a band-combining filter bank for subsequently combining the resultant sub-band signals.into a single digital signal, wherein each of the band-separating filter bank and band-combining filter bank incorporates a FIR low pass filter having an asymmetric impulse response, as the prototype filter of the filter bank. A significant reduction can thereby be achieved in the amount of overall group delay that results from the processing performed by these filter banks.

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