METHOD AND CIRCUIT CONFIGURATION FOR AVOIDING OVERFLOWS IN AN ADAPTIVE, RECURSIVE DIGITAL WAVE FILTER HAVING FIXED POINT ARITHMETIC

摘要

An adaptive, recursive digital wave filter includes a transfer filter and a gradient filter each having a respective adaptor with a given coefficient. A method and circuit configuration for avoiding overflows in the filter include multiplying a signal emitted by the transfer filter to the gradient filter by a scaling factor being equal to the difference between 1 and the amount of the given coefficient.