FIG. 7D depicts another configuration of the first and second playback devices 702a, 702b within the example environment in which the user has spoken the same command as in FIG. 7A that invokes the first VAS 790a by using the first wake word. In contrast to the scenario described above with respect to FIG. 7A, the first voice processor 760a receives detected sound from a first subset of the microphones 722 (e.g., microphones 1-4), and the second playback device 702b receives detected sound from a second subset of the microphones 722 (e.g., microphones 5 and 6) different than the first subset of microphones. In such embodiments, the first and/or second subset of microphones may include any number of microphones less than the total number of microphones of the first playback device 702a (including a single microphone). In some aspects, certain ones of the microphones 722 are assigned exclusively to the first playback device 702a (for example, by one or both of the playback devices 702, the MPS 100, and/or another playback device of the MPS 100), and certain ones of the microphones 722 are assigned exclusively to the second playback device 702b. In such embodiments, the first and second subsets of microphones have no microphones in common. In other embodiments, the first and second subsets of microphones may have at least one microphone in common.
