Patent ID: 8824693

Claim:
A method of processing audio signals at a device, the device comprising an audio output for outputting audio signals, the method comprising: receiving audio signals at a plurality of microphones of the device; measuring a characteristic of at least one of the audio signals received by the plurality of microphones; a beamforrner applying beamformer coefficients to the received audio signals, thereby generating a beamforrner output; and applying an echo canceller to the beamforrner output, thereby suppressing, from the beamformer output, an echo resulting from audio signals output from the audio output, wherein an operating parameter of the echo canceller is controlled based on the measured characteristic of the at least one of the audio signals received by the plurality of microphones, wherein the power of said at least one of the audio signals received by the plurality of microphones is used to determine an upper bound on the power of the strongest of the received audio signals based on the distance between the plurality of microphones of the device.