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1. (WO2018200484) SYSTEM AND METHOD FOR REDUCING POWER CONSUMPTION IN AN AUDIO SYSTEM BY DISABLING FILTER ELEMENTS BASED ON SIGNAL LEVEL

Pub. No.:    WO/2018/200484    International Application No.:    PCT/US2018/029086
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Apr 25 01:59:59 CEST 2018
IPC: G06F 1/32
G10L 25/51
G10L 19/26
Applicants: MAXIM INTEGRATED PRODUCTS, INC.
Inventors: BALLANY, Ross
Title: SYSTEM AND METHOD FOR REDUCING POWER CONSUMPTION IN AN AUDIO SYSTEM BY DISABLING FILTER ELEMENTS BASED ON SIGNAL LEVEL
Abstract:
An audio system includes a digital audio interface, a first filter stage, a second filter stage, a controller, and a first path selector. The controller is communicatively coupled to the digital audio interface and configured to determine whether an audio signal received at the digital audio interface is below a first signal threshold. The controller selects one of a first signal path that passes through the first and second filter stages and a second signal path that bypasses the first filter stage based upon the determination. The first path selector is communicatively coupled to the controller and at least one of the first filter stage and the second filter stage and is configured to generate the selected one of the first and second signal paths.