Systems and methods for associating playback devices with voice assistant services

A method comprising:

• associating a first network microphone device (NMD) with a first voice assistant service (VAS) such that the first NMD includes a first wake-word engine configured to detect a first wake word associated with the first VAS;
• associating a second NMD with a second VAS such that the second NMD includes a second wake-word engine configured to detect a second wake word associated with the second VAS, the second wake word being different from the first wake word;
• detecting the first wake word via the first NMD;
• and
• after detecting the first wake word via the first NMD:
• transmitting a first voice utterance requesting playback of media content to one or more remote computing devices associated with the first VAS;
• playing back the media content via the first and second NMDs in synchrony with one another;
• and
• transmitting, a control state variable associated with at least the first NMD and the second NMD to the one or more remote computing devices associated with the second VAS.

One or more tangible, non-transitory, computer-readable media storing instructions executable by one or more processors of a media playback system to cause the media playback system to perform operations comprising:

• associating a first network microphone device (NMD) with a first voice assistant service (VAS) such that the first NMD includes a first wake-word engine configured to detect a first wake word associated with the first VAS;
• associating a second NMD with a second VAS such that the second NMD includes a second wake-word engine configured to detect a second wake word associated with the second VAS, the second wake word being different from the first wake word;
• detecting the first wake word via the first NMD;
• and
• after detecting the first wake word via the first NMD:
• transmitting a first voice utterance requesting playback of media content to one or more remote computing devices associated with the first VAS;
• playing back the media content via the first and second NMDs in synchrony with one another;
• and
• transmitting a control state variable associated with at least the first NMD and the second NMD to the one or more remote computing devices associated with the second VAS.