A device comprising: a loudspeaker ; a plurality of microphones affixed to the device ; and a plurality of beamformers coupled to the plurality of microphones , a first of the plurality of beamformers coupled to the plurality of microphones and arranged to form a first audio beam having a spatial null in the loudspeaker direction, and a second of the plurality of beamformers coupled to the plurality of microphones and arranged to form a second audio beam having a spatial null in an at least one near-end signal direction; and a controller arranged to analyze the first audio beam and the second audio beam and arranged to control a modification of an audio signal received by at least one of the plurality of microphones in response to the analysis, wherein the audio signal modified by the controller includes an echo signal generated at the loudspeaker, and a near-end signal generated by at least one near-end audio source external to the device, the first audio beam having a greater amount of near-end signal than the second audio beam, whereby the echo signal interferes with a desired signal included in the near-end signal, thereby providing the first audio beam with a greater signal-to-echo ratio, and the second audio beam having a greater amount of echo signal than the first audio beam, whereby the near-end signal interferes with the echo signal and thereby providing the second audio beam with a greater echo-to-interference ratio, the interference being the near end signal, and further wherein the controller analyzes the first audio beam and second audio beam to determine if the first audio beam power is greater than a product of the second audio beam power and a threshold. a loudspeaker ; a plurality of microphones affixed to the device ; and a plurality of beamformers coupled to the plurality of microphones , a first of the plurality of beamformers coupled to the plurality of microphones and arranged to form a first audio beam having a spatial null in the loudspeaker direction, and a second of the plurality of beamformers coupled to the plurality of microphones and arranged to form a second audio beam having a spatial null in an at least one near-end signal direction; and a controller arranged to analyze the first audio beam and the second audio beam and arranged to control a modification of an audio signal received by at least one of the plurality of microphones in response to the analysis, wherein the audio signal modified by the controller includes an echo signal generated at the loudspeaker, and a near-end signal generated by at least one near-end audio source external to the device, the first audio beam having a greater amount of near-end signal than the second audio beam, whereby the echo signal interferes with a desired signal included in the near-end signal, thereby providing the first audio beam with a greater signal-to-echo ratio, and the second audio beam having a greater amount of echo signal than the first audio beam, whereby the near-end signal interferes with the echo signal and thereby providing the second audio beam with a greater echo-to-interference ratio, the interference being the near end signal, and further wherein the controller analyzes the first audio beam and second audio beam to determine if the first audio beam power is greater than a product of the second audio beam power and a threshold. <EOS>