Abstract: A system may include a controller coupled to a user interface. A user may provide user commands specifying mapping relationships between one or more audio inputs and one or more audio zones via the user interface. The controller may be configured to determine individual audio inputs to be outputted to individual audio zones based on a priority policy. The system may further include audio streaming applications coupled to the controller. The controller may launch the audio streaming applications to the user interface for interaction with the user. The audio streaming applications may provide audio streams to be outputted at the individual audio zones. The system may further include a streaming interface coupled to the controller and the audio streaming applications and configured to receive the audio streams. The streaming interface may be further configured to transmit the audio streams to output devices of the individual audio zones.

Abstract: Devices that couple to high voltage transmission lines obtain power themselves using the body capacitance of an element of the devices. The devices generate a comparatively lower voltage from the current flowing between the high voltage line and the element of the device that generates the body capacitance. The devices can be used to operate sensors that monitor the transmission lines or parameters of the power distribution system, such as current, line temperature, vibration, and the like. The devices can also be used as indicators, such as aircraft warning lights, information signs, etc. In addition, the devices can operate as RF transmission/reception or repeater devices, radar devices, mesh networking nodes, video/audio surveillance, sound emitting devices for scaring animals, drones that traverse the power line, etc. Because the devices operate in response to line voltage rather than current, the devices are reliable even in low current conditions.