Patent attributes
A device includes one or more processor devices, an audio sensor, a speaker device, and one or more memory devices. The audio sensor is configured to generate an audio stream. The one or more memory devices store data including data identifying a wake phrase and instructions. The instructions are executable by the one or more processor devices to initiate, as a result of detecting the wake phrase in the audio stream and determining that the wake phrase is invalid, presentation via the speaker device of audio output identifying a valid wake input. The instructions are further executable by the one or more processors to initiate, as a result of detecting the valid wake input, communication of a portion of the audio stream to a natural language processing service.