5. A method, comprising: providing a command to an audio device to perform an activity, wherein the command identifies a responsible application from among multiple applications; receiving an event message from the audio device regarding sound presented by the audio device, the event message identifying the responsible application; if the event message indicates that the sound is part of a user interaction, designating the responsible application as being primarily active; receiving speech captured by the audio device; determining a meaning of the speech; and if there is a primarily active application among the multiple applications that can respond to the meaning, requesting the primarily active application to respond to the meaning.
9. The method of claim 5 , further comprising determining that the primarily active application can respond to the meaning before requesting the primarily active application to respond to the meaning.