Arbitration-based voice recognition

A non-transitory computer-readable medium, wherein the non-transitory computer-readable medium is provisioned with program instructions that, when executed by at least one processor, cause a first playback device to:

• detect a voice input via at least one microphone of the first playback device, the voice input comprising a command to control playback of audio content by at least one of the first playback device or a second playback device;
• determine a first measure of confidence associated with the voice input as detected by the first playback device;
• receive, from the second playback device, an arbitration message comprising a second measure of confidence associated with the voice input as detected by the second playback device;
• determine that the second measure of confidence is greater than the first measure of confidence;
• receive, from the second playback device, the voice input as detected by the second playback device;
• based on the determination that the second measure of confidence is greater than the first measure of confidence, perform voice recognition based on the voice input as detected by the second playback device;
• and
• after performing the voice recognition based on the voice input as detected by the second playback device, execute the command to control playback of audio content by at least one of the first playback device or the second playback device.

A method implemented by a first playback device, the method comprising:

• detecting a voice input via at least one microphone of the first playback device, the voice input comprising a command to control playback of audio content by at least one of the first playback device or a second playback device;
• determining a first measure of confidence associated with the voice input as detected by the first playback device;
• receiving, from the second playback device, an arbitration message comprising a second measure of confidence associated with the voice input as detected by the second playback device;
• determining that the second measure of confidence is greater than the first measure of confidence;
• receiving, from the second playback device, the voice input as detected by the second playback device;
• based on the determination that the second measure of confidence is greater than the first measure of confidence, performing voice recognition based on the voice input as detected by the second playback device;
• and
• after performing the voice recognition based on the voice input as detected by the second playback device, executing the command to control playback of audio content by at least one of the first playback device or the second playback device.