Method for Generating an Imperceptible Stimulus Signal for On-line Secondary Path for Automotive Active Noise Control Systems

Abstract

A system and method for generating a stimulus signal as a solution for an adaptive secondary path component of an active noise cancellation (ANC) system having at least one audio signal source to provide an audio signal in a cabin of the vehicle, a shaped noise generator provides a shaped-noise signal in the cabin of the vehicle, at least one controller programmed to activate the shaped noise generator and add the shaped noise signal to the audio signal to generate a stimulus signal, and at least one loudspeaker to project the stimulus signal within the cabin of the vehicle for the ANC system to generate an anti-noise signal.

Dependencies are inferred from the claim text.