Patent ID: 11863702
Assignee: NOKIA TECHNOLOGIES OY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. An apparatus for echo cancellation of a two-way audio communication, comprising:
one or more processors; and
one or more memories storing instructions that, when executed by the one or more processors, cause the apparatus at least to:
receive, at an adaptive echo cancellation system from one or more microphones, an audio signal based on near-end signals and reproduced far-end signals, wherein one or more loudspeakers reproduced the far-end signals;
operate the adaptive echo cancellation system with at least one filter so as to update estimates of coefficients of an acoustic channel from the one or more loudspeakers to the one or more microphones;
determine at least one control parameter affecting an operation of the adaptive echo cancellation system that is configurable and is set to at least one value, from a range of values, wherein the determining at least one control parameter is based on estimating an accuracy of the estimates of the coefficients of the acoustic channel and a characteristic of the near-end signals; and
control, by the adaptive echo cancellation system, the at least one filter with different values of the at least one control parameter at different times, wherein the at least one filter produces an output signal and the adaptive echo cancellation system performs the echo cancellation by subtracting the output signal from a signal from the one or more microphones.