14. A computer program product, comprising one or more non-transitory computer-readable media having computer program instructions stored therein, the computer program instructions being configured such that, when executed by one or more computing devices, the computer program instructions cause the one or more computing devices to: operate the computing device in a passive experience mode providing a first response to first speech based on the first speech not including a hardware activation phrase; determine characteristics of an environment of the computing device, the characteristics of the environment including a determination that a user is engaged with playback of media content; and adjust operation of the computing device from the passive experience mode to an active experience mode based on the characteristics including that the user is engaged with playback of media content, the active experience mode configured to provide a second response to second speech including the hardware activation phrase.
14. A computer program product, comprising one or more non-transitory computer-readable media having computer program instructions stored therein, the computer program instructions being configured such that, when executed by one or more computing devices, the computer program instructions cause the one or more computing devices to: operate the computing device in a passive experience mode providing a first response to first speech based on the first speech not including a hardware activation phrase; determine characteristics of an environment of the computing device, the characteristics of the environment including a determination that a user is engaged with playback of media content; and adjust operation of the computing device from the passive experience mode to an active experience mode based on the characteristics including that the user is engaged with playback of media content, the active experience mode configured to provide a second response to second speech including the hardware activation phrase. 19. The computer program product of claim 14 , wherein the characteristics of the environment include a number of people within the environment.