The present disclosure relates to a method and device for a control device to set an audio channel in a wireless communication system by using Bluetooth Low Energy technology. According to the present disclosure, an advertising packet is received from each of a plurality of devices, wherein the advertising packet includes at least one among location information, codec information, and/or role information for the respective device.

The control device transmits a plurality of pieces of setting information, for providing an audio service, to the plurality of devices on the basis of the advertising packet, wherein each piece of setting information includes delay information about the respective device, and the control device transmits channel setting information for an isochronous channel, for providing the audio service, to the plurality of devices.

Methods for converting, encoding, decoding and transcoding an acoustic field, more particularly a first-order Ambisonics three-dimensional acoustic field.

To suitably regulate sound pressure of object content on a receiving side. An audio stream including coded data of a predetermined number of pieces of object content is generated. A container of a predetermined format including the audio stream is transmitted. Information indicating a range within which sound pressure is allowed to increase and decrease for each piece of object content is inserted into a layer of the audio stream and/or a layer of the container. On a receiving side, sound pressure of each piece of object content increases and decreases within the allowable range based on the information.

Methods of operating a system of nodes are provided. A method of operating first and second nodes that are in a system of nodes includes processing first data from a first plurality of sensors of the first node. The method includes controlling a first digital display of the first node in response to the processed first data. The method includes uploading the processed first data from the first node via the Internet. The method includes processing second data from a second plurality of sensors of the second node. The method includes controlling a second digital display of the second node in response to the processed second data. The method includes uploading the processed second data from the second node via the Internet. Each of the first and second nodes is attached to a utility pole, a light pole, a kiosk, or a motor vehicle. Related systems are also provided.

Methods of operating a system of nodes are provided. A method of operating first and second nodes that are in a system of nodes includes processing first data from a first plurality of sensors of the first node. The method includes controlling a first digital display of the first node in response to the processed first data. The method includes uploading the processed first data from the first node via the Internet. The method includes processing second data from a second plurality of sensors of the second node. The method includes controlling a second digital display of the second node in response to the processed second data. The method includes uploading the processed second data from the second node via the Internet. Each of the first and second nodes is attached to a utility pole, a light pole, a kiosk, or a motor vehicle. Related systems are also provided.

Improved methods and/or apparatus for decoding an encoded audio signal in soundfield format for L loudspeakers. The method and/or apparatus can render an Ambisonics format audio signal to 2D loudspeaker setup(s) based on a rendering matrix. The rendering matrix has elements based on loudspeaker positions and wherein the rendering matrix is determined based on weighting at least an element of a first matrix with a weighting factor $g=\frac{1}{\sqrt{L}}.$
The first matrix is determined based on positions of the L loudspeakers and at least a virtual position of at least a virtual loudspeaker that is added to the positions of the L loudspeakers.

A sound output device includes a processor, the processor being configured to generate a first output signal for sound to be output from a first output device by mixing a left-channel signal and a right-channel signal based on a first ratio, generate a second output signal for sound to be output from a second output device by mixing the left-channel signal and the right-channel signal based on a second ratio, generate a third output signal for sound to be output from a third output device by mixing the left-channel signal and the right-channel signal based on a third ratio, and generate a fourth output signal for sound to be output from a fourth output device by mixing the left-channel signal and the right-channel signal based on a fourth ratio.

A sound output device includes a processor, the processor being configured to generate a first output signal for sound to be output from a first output device by mixing a left-channel signal and a right-channel signal based on a first ratio, generate a second output signal for sound to be output from a second output device by mixing the left-channel signal and the right-channel signal based on a second ratio, generate a third output signal for sound to be output from a third output device by mixing the left-channel signal and the right-channel signal based on a third ratio, and generate a fourth output signal for sound to be output from a fourth output device by mixing the left-channel signal and the right-channel signal based on a fourth ratio.

A software of the present invention causes a processor to execute a process including converting an A format signal applicable to ambisonics to a B format signal; distinguishing a specific direction from a plurality of directions based on the B format signal; and generating and outputting an audio signal corresponding to the specific direction. Also disclosed is a microphone including the software.

A software of the present invention causes a processor to execute a process including converting an A format signal applicable to ambisonics to a B format signal; distinguishing a specific direction from a plurality of directions based on the B format signal; and generating and outputting an audio signal corresponding to the specific direction. Also disclosed is a microphone including the software.