公开(公告)号：US20170134854A1

公开(公告)日：2017-05-11

申请号：US15411466

申请日：2017-01-20

Applicant: CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR LTD.

Inventor： Erik Lindahl ,  Ludvig Lindblom ,  Pär Gunnars Risberg ,  Landy Toth

IPC: H04R3/04 ,  H03H17/02

CPC classification number: H04R3/04 ,  H03H17/0261 ,  H03H17/0283 ,  H03H17/0294 ,  H03H17/0621 ,  H04R2430/00 ,  H04R2430/03

Abstract: A multi-rate filter system is disclosed. More particularly, a computationally efficient multi-rate filter system for processing an audio stream on a consumer electronics device is disclosed. The multi-rate filter system includes a plurality of multi-rate filtering blocks, at least one block including a linear filter component. At least one multi-rate filtering block may include a nonlinear signal processing component. The multi-rate filter system may include a nonlinear functional block. A method of filtering a signal is also disclosed.