Abstract: The present invention relates to the field of wireless audio streaming. The invention can be used to manage dynamically the configuration of a link between a Bluetooth audio source and a Bluetooth audio sink, or between a master and slave device. The invention relates to method for operating a Bluetooth device, the method comprising: transporting audio information over a Bluetooth communication link established with a second device; determining, upon a change of value of an operational parameter in either the Bluetooth device or the second device, a new operating mode for said Bluetooth communication link; modifying a configuration parameter of said Bluetooth communication link based on the new operating mode; transporting audio information on said Bluetooth communication link according to the modified configuration parameter.

Abstract: Disclosed is a device for controlling Bluetooth multimedia devices, the device including a Bluetooth chip configured to establish a point to multipoint link from the Bluetooth chip to a plurality of Bluetooth multimedia devices, and to stream a multimedia stream to at least one of the plurality of Bluetooth multimedia devices. The Bluetooth chip is further configured to: retrieve from each Bluetooth multimedia device an indication of a signal strength of each link between the device and the corresponding Bluetooth multimedia device; and select at least one Bluetooth multimedia device to which stream the multimedia stream based on the retrieved indications of signal strength.

Abstract: A method and multimedia device for calibrating audio delays of an audio system with wireless loudspeakers are disclosed. The method allows to emulate surround or 3D sound systems with spatially distributed wireless loudspeakers. A first probe signal for audio playback, having a first audio pattern, is transmitted by a loudspeaker. A signal quality is determined by listening to an acoustic response of the loudspeaker to the first probe signal. A second audio pattern is determined by modifying the first audio pattern based on the signal quality. A second probe signal for audio playback having the second audio pattern is transmitted by the loudspeaker. An audio delay compensation is then determined for the loudspeaker based on a measure of an audio delay between the transmitted second probe signal and an acoustic response of the loudspeaker in response to the second probe signal.

Abstract: The invention relates to a method for managing a routing of audio data, the method being performed by an audio data routing device (M), the method comprising the steps of: —transmitting (100), in a Bluetooth network, a list of audio transmitting devices (SPK1, SPK2, SPK3), —receiving (200) a communication request (RQ1, RQ2) from a Bluetooth enabled device (S1, S2), —in response to said communication request, establishing (300) a communication link with the Bluetooth enabled device, —managing (400) the audio data routing between the Bluetooth enabled device and a selected audio data transmitting device from the list of audio data transmitting devices.

Abstract: A method for managing a plurality of multimedia communication links in a point-to-multipoint Bluetooth network established between a source device and a plurality of sink devices, the method comprising: determining a new set of values of the configuration parameters upon:—receiving a request for adding a new sink device to the plurality of sink devices of the point-to-multipoint Bluetooth network, or—receiving a request for changing a value of a configuration parameter related to a sink device of the plurality of sink devices, or—determining an updated value of the maximum bandwidth usage parameter, wherein the new set of values is determined to allocate data rates between the plurality of multimedia communication links without exceeding the value of the maximum bandwidth usage parameter.

Abstract: The description relates to a device (CTRL-DEV) for controlling a dual-mode Bluetooth low energy multimedia device (DM-BLE), the dual-mode BLE multimedia device comprising a first sound system (SS1) and a second sound system (SS2) which are arranged to simultaneously stream an input multimedia stream, the first and second sound systems being respectively associated with at least one first Bluetooth multimedia device (SPK1, SPK2, SPKN) and at least one Bluetooth multimedia device (BLE-SPK1, BLE-SPK2, BLE-SPKN). The description also refers to a dual-mode Bluetooth low energy multimedia device (DM-BLE?), a method, a computer program and a non-transitory computer-readable storage medium.

Abstract: A Bluetooth device controlling a plurality of wireless audio devices, includes: a wireless communication circuit, to receive a wireless audio device identifier from each wireless audio device; a sound processing circuit to apply independent audio effects on a main audio stream such that the sound processing circuit outputs as many modified audio streams as the wireless communication circuit has received identifiers of wireless audio devices, on the basis of the characteristics of each wireless audio device; an allocation circuit to allocate each modified audio stream to a respective wireless audio device; and a transmission circuit to wirelessly transmit through a Bluetooth usage each modified audio stream to the respective wireless audio device for emission by the wireless audio devices.

Abstract: Disclosed is a device for controlling a dual-mode Bluetooth low energy multimedia device, the dual-mode BLE multimedia device including a first sound system and a second sound system which are arranged to simultaneously stream an input multimedia stream, the first and second sound systems being respectively associated with at least one first Bluetooth multimedia device and at least one Bluetooth multimedia device. Also disclosed is a dual-mode Bluetooth low energy multimedia device, a method, a computer program and a non-transitory computer-readable storage medium.

Abstract: Methods and systems for optimizing a routing of audio data to audio transmitting devices using a Bluetooth network are disclosed. One method includes receiving an encoded audio bitstream at a first speaker of the audio rendering system comprising a first and a second audio channels, separating a first set of spectral components of the first audio channel and a second set of spectral components of the second audio channel from the encoded audio bitstream, without decoding the audio bitstream, generating a first encoded bitstream from the first set of spectral components, and forwarding the first encoded bitstream to a second speaker of the audio rendering system over the wireless link.

Abstract: The Bluetooth device (DEV) controlling a plurality of wireless audio devices, comprises: a wireless communication circuit, to receive a wireless audio device identifier from each wireless audio device; a sound processing circuit to apply independent audio effects on a main audio stream such that the sound processing circuit outputs as many modified audio streams as the wireless communication circuit has received identifiers of wireless audio devices, on the basis of the characteristics of each wireless audio device; an allocation circuit to allocate each modified audio stream to a respective wireless audio device, a transmission circuit to wirelessly transmit through a Bluetooth usage each modified audio stream to said respective wireless audio device for emission by the wireless audio devices.

Abstract: Audio rendering devices comprising at least one audio rendering unit for playing audio streams, processing circuit and a wireless communication unit for establishing wireless links and related method are disclosed. One audio rendering device is configured to receive a remote audio stream prioritization policy comprising one or more lists of associations between audio stream attributes and priority values, update a local audio stream prioritization policy based on the remote audio stream prioritization policy, identify audio streams available via wireless links, retrieve audio stream attributes of the available audio streams, select an available audio stream to be played among the available audio streams, based on the updated local audio stream prioritization policy and based on the audio stream attributes of the available audio streams, and play the selected audio stream, by the audio rendering unit of the audio rendering device.

Abstract: Methods and systems for optimizing a routing of audio data to audio transmitting devices using a Bluetooth network are disclosed. One method includes receiving an encoded audio bitstream at a first speaker of the audio rendering system comprising a first and a second audio channels, separating a first set of spectral components of the first audio channel and a second set of spectral components of the second audio channel from the encoded audio bitstream, without decoding the audio bitstream, generating a first encoded bitstream from the first set of spectral components, and forwarding the first encoded bitstream to a second speaker of the audio rendering system over the wireless link.

Abstract: Methods and systems for optimizing a routing of audio data to audio transmitting devices using a Bluetooth network are disclosed. One method includes receiving an encoded audio bitstream at a first speaker of the audio rendering system comprising a first and a second audio channels, separating a first set of spectral components of the first audio channel and a second set of spectral components of the second audio channel from the encoded audio bitstream, without decoding the audio bitstream, generating a first encoded bitstream from the first set of spectral components, and forwarding the first encoded bitstream to a second speaker of the audio rendering system over the wireless link.

Abstract: Methods for communicating audio and voice signals as well as hearable devices therefor are disclosed. A disclosed method includes creating an audio and voice Bluetooth communication link between a computing device and a hearable device. The audio and voice Bluetooth communication link includes a downlink and an uplink. The method further includes configuring the downlink with a downlink audio codec and the uplink with an uplink voice codec and receiving, by the hearable device through the downlink, a channel of a downlink audio signal from the computing device. The channel is encoded with the downlink audio codec. The method further includes transmitting, to the computing device, an uplink voice signal by the hearable device through the uplink. The uplink voice signal is encoded with the uplink voice codec.

Abstract: The invention relates to a method of determining latency information in a wireless audio system, the wireless audio system comprising at least one wireless receiver, a wireless transmitter and a sound recorder, the method comprising the following steps: transmitting at least one test signal from the wireless transmitter to the wireless receiver, the test signal defining a time reference; playing the test signal at the wireless receiver; acquiring an audio record by the sound recorder while the test signal is played by the wireless receiver; determining, by the sound recorder, a latency information related to the wireless receiver at least based on the time reference and based on the audio record, and the wireless transmitter and the sound recorder being synchronized; transmitting the determined latency information to the wireless transmitter.

Abstract: Audio rendering devices comprising at least one audio rendering unit for playing audio streams, a processing circuit and a wireless communication unit for establishing wireless links and related method are disclosed. One audio rendering device is configured to receive a remote audio stream prioritization policy comprising one or more lists of associations between audio stream attributes and priority values, update a local audio stream prioritization policy based on the remote audio stream prioritization policy, identify audio streams available via wireless links, retrieve audio stream attributes of the available audio streams, select an available audio stream to be played among the available audio streams, based on the updated local audio stream prioritization policy and based on the audio stream attributes of the available audio streams, and play the selected audio stream, by the audio rendering unit of the audio rendering device.

Abstract: Disclosed is a device for controlling a dual-mode Bluetooth low energy multimedia device, the dual-mode BLE multimedia device including a first sound system and a second sound system which are arranged to simultaneously stream an input multimedia stream, the first and second sound systems being respectively associated with at least one first Bluetooth multimedia device and at least one Bluetooth multimedia device. Also disclosed is a dual-mode Bluetooth low energy multimedia device, a method, a computer program and a non-transitory computer-readable storage medium.

Abstract: The Bluetooth device (DEV) controlling a plurality of wireless audio devices, comprises: a wireless communication circuit, to receive a wireless audio device identifier from each wireless audio device; a sound processing circuit to apply independent audio effects on a main audio stream such that the sound processing circuit outputs as many modified audio streams as the wireless communication circuit has received identifiers of wireless audio devices, on the basis of the characteristics of each wireless audio device; an allocation circuit to allocate each modified audio stream to a respective wireless audio device, a transmission circuit to wirelessly transmit through a Bluetooth usage each modified audio stream to said respective wireless audio device for emission by the wireless audio devices.

Abstract: A method of synchronizing sub-systems each including a master device and at least one slave device connected to the master device via Bluetooth for playback by the at least one slave device of audio data. The method includes collecting respective internal latency data of the sub-systems, determining, based on the internal latency data of the plurality of sub-systems, respective delays to be applied by the sub-systems between reception of the audio data and playback of the audio data by the slave devices of the sub-system, and, by each sub-system, applying the corresponding delay for playback of the audio data.

Abstract: A Bluetooth device with a host system and a controller is disclosed. The host system supports a host stack of a Bluetooth protocol, and the controller supports a controller stack of the Bluetooth protocol. The device includes an interface for receiving, at the controller, a piconet-synchronized signal. The device also includes an interface for providing, by the controller to the host system, a derivative of the piconet-synchronized signal. The device also includes a circuit for determining a latency of the providing. The device also includes a circuit for synchronizing, at the host system of the Bluetooth device, a host clock with a timing reference of a master device of the Bluetooth piconet using said latency and the derivative of the piconet-synchronized signal.