Abstract: Computer-implemented methods, computer program products, and computer systems configured for receiving first audio data from a first computing device via a first microphone, receiving second audio data from a second computing device via a second microphone, detecting a first user utterance having a first user utterance local decibel measure in the first audio data and a first user utterance remote decibel measure in the second audio data, detecting a second user utterance having a second user utterance local decibel measure in the second audio data and a second user utterance remote decibel measure in the first audio data, determining a first cancelling coefficient based on the second user utterance detected at the first microphone and the second user utterance detected at the second microphone, applying the first cancelling coefficient to the first audio data, and generating first output audio data comprising the first user utterance at the first computing device.