Filter bank assembly for a hearing device

摘要

The configuration has an analysis filter bank (13) comprising a set of filters. A synthesis filter bank e.g. complex-modulated polyphase filter bank, comprises a set of filters e.g. linear-phase finite impulse response filters, coupled in pair with the respective filters in the analysis filter bank, where each pair of coupled filters forms channels (18). A changing unit changes a phase of a signal transmitted by the channel to reduce difference between a group delay of the filter bank configuration and a prescribable reference value for predetermined frequency.