Referring to FIG. 8, method 800 begins at block 801, which includes detecting sound via a microphone array of a first playback device. Next, the method 800 advances to block 802, which includes analyzing, via a first wake-word engine of the first playback device, the detected sound from the first playback device. At block 803, the method 800 includes transmitting data associated with the detected sound to a second playback device. In some example implementations, the second playback device is a local area network. At block 804, the method 800 includes identifying that the detected sound contains either (i) a first wake word based on the analysis via the first wake-word engine or (ii) a second wake word based on the analysis via the second wake-word engine. Based on the identification, at block 805, the method 800 includes transmitting sound data corresponding to the detected sound over a wide area network to a remote computing device associated with a particular voice assistant service.
