Networked devices, systems and methods for associating playback devices based on sound codes

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:

• identify a trigger event indicating a request to establish an association between the first playback device and at least a second playback device;
• transmit an indication of the trigger event to the second playback device via at least one network interface of the first playback device;
• based on identifying the trigger event, detect a sound specimen via at least one microphone of the first playback device;
• transmit, to the second playback device, a first sound object based on the sound specimen via the at least one network interface;
• receive, from the second playback device, an indication that the first playback device and the second playback device have a spatial relationship based on a comparison between the first sound object and a second sound object of the second playback device;
• and
• based on receiving the indication that the first playback device and the second playback device have the spatial relationship, (i) transmit configuration data corresponding to the association to the second playback device, and (ii) cause the association between the first playback device and the second playback device to be established.

A method carried out by a first playback device, the method comprising:

• identifying a trigger event indicating a request to establish an association between the first playback device and at least a second playback device;
• transmitting an indication of the trigger event to the second playback device via at least one network interface of the first playback device;
• based on identifying the trigger event, detecting a sound specimen via at least one microphone of the first playback device;
• transmitting, to the second playback device, a first sound object based on the sound specimen via the at least one network interface;
• receiving, from the second playback device, an indication that the first playback device and the second playback device have a spatial relationship based on a comparison between the first sound object and a second sound object of the second playback device;
• and
• in response to receiving the indication that the first playback device and the second playback device have the spatial relationship, (i) transmitting configuration data corresponding to the association to the second playback device, and (ii) causing the association between the first playback device and the second playback device to be established.