A terrestrial acoustic sensor array for detecting and preventing airspace collision with an unmanned aerial vehicle (UAV) includes a plurality of ground-based acoustic sensor installations, each of the acoustic sensor installations including a sub-array of microphones. The terrestrial acoustic sensor array may further include a processor for detecting an aircraft based on sensor data collected from the microphones of at least one of the plurality of acoustic sensor installations and a network link for transmitting a signal based on the detection of the aircraft to a control system of the UAV.

A display apparatus includes: a display panel configured to display an image, at least one supporting member on a rear surface of the display panel, the at least one supporting member defining a groove, at least one sound generation device adjacent to the display panel, and a wiring, accommodated into the groove, configured to transfer a signal to the at least one sound generation device.

Various implementations include seats and related loudspeakers. In particular cases, a seat includes: a seat headrest portion; a seat backrest portion; and a loudspeaker assembly. The loudspeaker assembly includes at least one driver for generating an acoustic output; and an acoustic exit fixed in the seat backrest portion and angled to provide the acoustic output to a location below a nominal ear position of an occupant of the seat, wherein a firing angle of the at least one driver provides the acoustic output to achieve a consistent frequency response across a range of positions deviating from the nominal ear position.

An input device includes: a touch device configured to receive a user operation; an actuator configured to apply a vibration corresponding to a drive voltage to the touch device; and a processor. The processor is configured to: apply a first voltage to the actuator to vibrate the touch device with a first vibration in response to a touch-down during a touch operation, the touch-down in which a pressing force of a predetermined value or more is detected from start of touch to the touch device; and apply a second voltage lower than the first voltage to the actuator to vibrate the touch device with a second vibration in response to a touch release during the touch operation, the touch release in which a pressing force of a value lower than the predetermined value after the touch-down is detected.

What is disclosed is a loudspeaker reproduction system for a vehicle having a first loudspeaker array and a second loudspeaker array. The first loudspeaker array is configured to generate a first stereo or virtual multi-channel sound field, wherein the first loudspeaker array is aligned towards a driver position of the vehicle. The second loudspeaker array is configured to generate a second stereo or virtual multi-channel sound field, wherein the second loudspeaker array is aligned towards a front passenger position of the vehicle.

Embodiments provide a digital processor including an ambient portion extractor and a spatial effect processing stage. The ambient portion extractor is configured to extract an ambient portion from a multi-channel signal. The spatial effect processing stage is configured to generate a spatial effect signal based on the ambient portion of the multi-channel signal. The digital processor is configured to combine the multi-channel signal or a processed version thereof with the spatial effect signal.

A method, system, and apparatus for troubleshooting one or more multimedia devices of an audio system have been disclosed herein. An audio loopback device transmits a test signal to a first multimedia device. The first multimedia device, after receiving the test signal, generates a response signal. The audio loopback device triggers a priority controller based on an unsuccessful detection of the response signal. The priority controller troubleshoots a communicative coupling by at least changing a mode of operation of at least one of a first multimedia device or a second multimedia device from a first mode of operation to a second mode of operation. The first mode of operation or the second mode of operation may be utilized by the first multimedia device to establish the communicative coupling with the second multimedia device for delivering an audio signal of the second multimedia device on an audio device.

A device for mounting an audio speaker in a vehicle includes a clip and a pin. The clip includes an engaging plate, a first engager provided on a first side of the engaging plate, a first lock provided at an end of the first engager on an side opposite to the engaging plate, a second engager provided on a second side that is opposite to the first side of the engaging plate, and a second lock provided at an end of the second engager on a side opposite to the engaging plate. The pin includes a shaft and the first engager has a concave portion that receives the shaft of the pin.

A system is disclosed for safely and efficiently removing or returning a radio microphone from a mounting surface. The system includes a first magnet attached to the rear side of a radio microphone and a second magnet located at a desired mounting position on the mounting surface. The second magnet preferably includes an outer vinyl layer to prevent breaking or cracking of the first second magnet when returning the radio microphone to its mounting position.

Embodiments include a vehicle comprising an audio system configured to create a plurality of audio zones within a vehicle cabin, and at least one display communicatively coupled to the audio system. The display is configured to display a separate user interface for each audio zone. Each user interface comprises an engine sound control and a cabin noise control for adjusting an audio output provided to the corresponding audio zone. Embodiments also include a method of providing user-controlled sound isolation in a plurality of audio zones within a vehicle. The method comprises presenting, for each audio zone, a user interface including an engine sound control and a cabin noise control, and generating an audio output for each audio zone based on a first value received from the engine sound control and a second value received from the cabin noise control of the corresponding user interface.