DESIGN OF 3 CHANNEL COMPLEMENTARY FILTERS AS A WEIGHTED SUM OF 2 ALLPASS SECTIONS

The design of power complementary filters for multichannel sub-bands u sing a minimum number of allpass sections is investigated. In particul ar it is shown that three power complementary filters, for example a l owpass, a bandpass and a highpass combination, can be generated from t wo allpass filters. From a hardware design point of view, these new po wer complementary structures are desirable, because the actual number of filters to be implemented is comparatively small.