Patent ID: 9641157
Date: 2017-05-02
CPC Classifications: G10H,H03H

Claim:
1. A process comprising: receiving a digital signal by a filtering device comprising a plurality of first cascaded filtering blocks, each filtering block comprising a first elementary filtering cell and another associated elementary filtering cell, all of said first elementary filtering cells of the plurality of first filtering blocks being configured to factorise a first autoregressive moving average (ARMA) filter; filtering the digital signal by the filtering device to produce a filtered digital signal, wherein filtering comprises: receiving by a processor of the filtering device a first request for a filtering change to or from filtering by the first ARMA filter by the filtering device, controlling at least one control element to progressively switch the filtering device between digital signal filtering by the first elementary filtering cell and digital signal filtering by said other associated elementary filtering cell at a level of each of a plurality of first cascaded filtering blocks in response to receiving the first request.