1. A computer-implemented method comprising: capturing, during a first time period, first audio using a first microphone; capturing, during the first time period, second audio using a second microphone; determining first audio data corresponding to the first audio; determining second audio data corresponding to the second audio; determining, using at least the first audio data and the second audio data, third audio data corresponding to a first direction; determining, using at least the first audio data and the second audio data, fourth audio data corresponding to a second direction; and processing the third audio data and the fourth audio data with a neural network classifier to determine that the third audio data better represents speech than does the fourth audio data.