Audio processing circuit using leakage detection to control one or more adaptive filters and associated method

Abstract

An audio processing circuit is used for generating an output signal for an audio function, and includes at least one adaptive filter and a leakage detection circuit. The at least one adaptive filter controls the output signal. The leakage detection circuit performs leakage detection according to a first input signal and a second input signal, and adjusts the at least one adaptive filter according to a leakage detection result. The first input signal is indicative of noise signal signature. The second input signal is derived from an error signal output by an error microphone that picks up remnant noise resulting from the audio function.

Dependencies are inferred from the claim text.