US Patent 8995687 Volume interactions for connected playback devices

Methods and systems are provided for, volume interactions for connected playback device. In one example, a plurality of playback devices may be rendering audio in synchrony, when a volume adjustment is made for the plurality of playback devices as a group. In one case, a first playback device in the plurality of playback devices may have a volume limit, as indicated by a state variable associated with the first playback device. In this case, the resulting volume adjustment for the first playback device may be made according to both the group volume adjustment and the volume limit of the first playback device.