15. The computer-implemented method of claim 5 , wherein providing power to the network interface module causes the network interface module to transition from a deactivated state to an activated state.
5. A computer-implemented method of operating a first computing device, the method comprising: receiving an audio input; determining one or more values from the audio input, wherein the one or more values comprise at least one of: a first value indicating an energy level of the audio input; or a second value indicating a likelihood that the audio input comprises speech; increasing a sampling rate of the audio input, from a first lower sampling rate to a second higher sampling rate, based at least in part on the one or more values; activating a first module of the first computing device based at least in part on the one or more values; performing an operation, by the first module, wherein the operation comprises at least one of: determining that the audio input comprises a wakeword and causing activation of a network interface module in response to determining that the audio input comprises a wakeword, wherein causing activation of the network interface module comprises providing power to the network interface module; performing speech recognition on at least a portion of the audio input to obtain speech recognition results; or causing transmission of at least a portion of the audio input to a second computing device.