Patent ID: 9554210
Date: 2017-01-24
CPC Classifications: G10L,H04M,H04R

Claim:
1. A method, comprising: receiving a first signal including first audio and a second signal including second audio; transmitting the first signal to a first speaker, the first speaker outputting the first audio; transmitting the second signal to a second speaker, the second speaker outputting the second audio; receiving a detected signal from a microphone, the detected signal including the first audio output by the first speaker and the second audio output by the second speaker; applying first filter coefficients of a first adaptive filter to the first signal to generate a first estimated signal; causing the first adaptive filter to converge the first filter coefficients; applying second filter coefficients of a second adaptive filter to the second signal to generate a second estimated signal; causing the second adaptive filter to converge the second filter coefficients; determining a sum of the first estimated signal and the second estimated signal; subtracting the sum from the detected signal to determine a first output signal; determining that that the first filter coefficients of the first adaptive filter and the second filter coefficients of the second adaptive filter have converged to approximately stable values; in response to determining that the first and second adaptive filters have converged: