9. A method comprising acts of: analyzing digital data representing sounds captured by at least one microphone from an operating environment to compute background noise information associated with the operating environment, wherein: the act of analyzing comprises matching the sounds captured from the operating environment to a background noise from a plurality of background noises, and the background noise information comprises an identification of the background noise matching the sounds captured from the operating environment; selecting, based at least in part on the background noise information associated with the operating environment, a voice dialog from a plurality of voice dialogs, wherein: the act of selecting the voice dialog comprises selecting, based at least in part on the background noise matching the sounds captured from the operating environment, one or more grammars for use in carrying out the voice dialog with a user; and performing automatic speech recognition, using the one or more grammars, on user speech captured from the operating environment.
9. A method comprising acts of: analyzing digital data representing sounds captured by at least one microphone from an operating environment to compute background noise information associated with the operating environment, wherein: the act of analyzing comprises matching the sounds captured from the operating environment to a background noise from a plurality of background noises, and the background noise information comprises an identification of the background noise matching the sounds captured from the operating environment; selecting, based at least in part on the background noise information associated with the operating environment, a voice dialog from a plurality of voice dialogs, wherein: the act of selecting the voice dialog comprises selecting, based at least in part on the background noise matching the sounds captured from the operating environment, one or more grammars for use in carrying out the voice dialog with a user; and performing automatic speech recognition, using the one or more grammars, on user speech captured from the operating environment. 12. The method of claim 9 , wherein at least one grammar of the one or more grammars is selected from a plurality of grammars.