Filter coefficient conversion system for digital filter processing biological signals - has transmission function processors coupled to coefficient bank table and to evaluation stage generating filter bank of new coefficients.

摘要

The filter coefficient conversion system has filter coefficients used by digital filters for extracting required frequency components held in a filter bank table (1), with a transmission function processor (2), determining the respective transmission functions. A variable range stage (3) providing a range which is varied in steps is coupled to a second transmission function processor (4) with a priority sequence determination circuit (6). Both transmission function processors are coupled to an evaluation stage, which generates a filter bank of new rounded filter coefficients. Pref., the filter coefficient conversion system uses an IC chip microcomputer providing real-time processing. USE/ADVANTAGE - For e.g. real-time brain scanner. Reduced number of multiplication steps and reduced memory capacity requirement.