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.