Patent ID: 6208687
Filing Date: 2001-03-27
Classification: H03H

Abstract:
A method of switching between first and second digital FIR filters (A,B) while permitting uninterrupted passage of a desired signal therethrough, the method including:a) dividing a first filter (A) into a plurality of sections (6,12),b) rendering all but the first section (6) of the first filter (A) inoperative by fading out their output signals,c) changing the coefficients of an inoperative section (12) of the first filter (A) to the coefficients of a first section of a second filter (B), which is similarly divided into a like plurality of sections (6,12), andd) conducting the desired signal through the first section of the second filter while rendering the first section of the first filter inoperative by fading out its output signal.