Abstract: A method for enhancement of speech intelligibility in a device arranged for a near-end side a communication with a far-end device. The method involves calculating a measure of speech intelligibility at the near-end side based on a near-end audio input and a far-end audio input. Then, based on the calculated measure of speech intelligibility optimizing parameters of a predetermined speech enhancement algorithm, where a predetermined speech intelligibility target, and an additional target are taken into account to generate an optimized speech enhancement algorithm. Next, processing the far-end audio input according to the optimized speech enhancement algorithm, and generating a near-end audio output accordingly. The algorithm can adapt to changing noise conditions and be optimized for both speech intelligibility and another target. This can be used to minimize delay, electric power consumption and audio quality while satisfying the speech intelligibility target.

Abstract: A wireless sensor device for wireless transmission of sensed medical data to a medical monitoring and/or intervention device. The sensor device has a sensor element for sensing a physical parameter related to a body of a living person or animal. A wireless RF transmitter and receiver serves to transmit data packets with the sensed physical parameter, and to also receive data packets, in accordance with a TDMA based network protocol. A processor system controls operation of the wireless RF transmitter and receiver, including that the sensor device can operate as wireless RF synchronization master or slave, and the sensor device can negotiate according to a deterministic negotiation algorithm to appoint one of a plurality of wireless RF devices connected to the TDMA based network as wireless RF synchronization master, if it is detected that no master is available.

Abstract: The invention provides a method for real-time concealing errors in audio data packets. A Long Short-Term Memory (LSTM) neural network with a plurality of nodes is provided and pre-trained with audio data. A sequence of packets is received, each packet comprising a set of modified discrete cosine transform (MDCT) coefficients associated with a frame comprising time-domain samples of the audio signal. These MDCT coefficient data are applied to the LSTM neural network, and in case it is identified that a received packet is an erroneous packet, an output from the LSTM neural network is used to generate estimated MDCT co-efficients to provide a concealment packet to replace the erroneous packet. Preferably, the MDCT coefficients are normalized prior to applying to the LSTM neural network. This method can be performed in real-time. A low latency can be obtained and still with a high audio quality.

Abstract: A wireless communication method and protocol for wireless RF transmission of duplex audio in a flexible and self organizing network, especially audio data packets may be communicated according to a DECT protocol. Each wireless RF device is arranged to operate as a synchronization master or a synchronization slave, and where a negotiation algorithm is used to negotiate with other wireless RF devices present within wireless range to determine roles of master and slave(s). This allow wireless RF devices to leave or join groups of wireless RF devices within wireless range of each other, and still the synchronization master role is negotiated, and only one synchronization master is selected, whereas the remaining wireless RF devices will operate as synchronization slaves. Each wireless RF device performs a scanning of supported RF frequencies or channels to detect other wireless RF devices within wireless range.

Abstract: Systems and methods for facilitating wireless intercom in a local communications network are disclosed. Exemplary implementations may: generate and transmit a first broadcast packet and a second broadcast packet to a set of end-user communication devices; receive a first device-specific packet, on a first channel by a first central antenna and during a first uplink time period; receive a second device-specific packet, on the first channel by the first central antenna and during a second uplink time period; receive the first device-specific packet, on a second channel by a second central antenna and during a third uplink time period; receive the second device-specific packet, on the second channel by the second central antenna and during a fourth uplink time period; generate a third broadcast packet that includes packetized downlink information; and transmit the third broadcast packet to the set of end-user communication devices.

Abstract: A wireless microphone holder includes a storage device that stores identification information of a host device, a communication interface that communicates with the host device, and a processor configured to receive a pairing instruction to pair a plurality of wireless microphones with the host device, connect to the plurality of wireless microphones, and send the identification information to the plurality of wireless microphones. In a case in which the processor receives the pairing instruction, the processor sends the identification information and instruction information according to the pairing instruction to the plurality of wireless microphones connected to the processor, sends the instruction information to the host device, and mutually connects the plurality of wireless microphones and the host device.

Abstract: An audio codec suitable for robust wireless transmission of high quality audio with low latency, still at a moderate bit rate. The encoding and decoding methods are based on ADPCM and in addition to the encoded output bits APM, additional data QB are included in output data blocks, namely data QB representing an internal value of the adaptive quantization ADQ of the ADPCM encoding algorithm, especially a scaling factor encoded and truncated to such as 8 bits. Further, output data blocks preferably include data CFB representing an internal value of the predictor PR of the ADPCM encoding algorithm, especially data CFB representing coefficients of a lattice prediction FIR filter which, truncated to such as 8 bits, can be sequentially included in output data blocks. These additional data QB, CFB regarding internal values of the ADPCM encoding algorithm can be utilized at the encoder side to increase robustness against loss of data blocks in wireless transmission.

Abstract: Systems and methods for facilitating wireless intercom in a local communications network are disclosed. Exemplary implementations may: generate and transmit a first broadcast packet and a second broadcast packet to a set of end-user communication devices; receive a first device-specific packet, on a first channel by a first central antenna and during a first uplink time period; receive a second device-specific packet, on the first channel by the first central antenna and during a second uplink time period; receive the first device-specific packet, on a second channel by a second central antenna and during a third uplink time period; receive the second device-specific packet, on the second channel by the second central antenna and during a fourth uplink time period; generate a third broadcast packet that includes packetized downlink information; and transmit the third broadcast packet to the set of end-user communication devices.