Abstract: A Bluetooth receiving method, a Bluetooth receiver, and a Bluetooth audio device are disclosed in the present invention. The Bluetooth receiving method includes: obtaining load data and a CRC result of the load data, and processing the load data based on signal quality of each of a plurality of data segments in one or more pre-stored load data having failed CRC results when the CRC result of the load data fails and a remaining retransmission time for the load data is no longer available. The signal quality is determined based on a signal angle difference before and after judgment for each of the plurality of data segments in each load data during demodulation. By using solutions provided in the present invention, damage caused by a data loss to a voice or audio can be concealed, and data reliability of limited retransmission of Bluetooth can be effectively improved, thereby improving Bluetooth communication performance.

Abstract: Techniques for broadcasting audio data from one device to multiple devices are described. A sound source device is configured for broadcasting audio data on a plurality of first time blocks in a first broadcast interval, and, one or more receiving and forwarding devices are configured for receiving the audio data from the sound source device and/or other receiving and forwarding devices on one or more second time blocks in a second broadcast interval, where the receiving and forwarding devices forward the audio data on one or more third time blocks in the second broadcast interval after the audio data packet is received correctly. The first broadcast interval is synchronously aligned with the second broadcast interval, and the aligned first and second broadcast intervals are used to transmit the same audio data. Thereby, reliable audio data communication from one point to multiple points can be realized.

Abstract: A method, a device and a system for audio data communication are provided in the present invention. The method comprises: encoding audio data at a fixed interval to obtain a plurality of frames of encoded audio data; broadcasting M frames of the encoded audio data on a broadcast anchor time slot of a first time slot at a predetermined broadcast interval; and playing the audio data after delaying a predetermined time from an anchor of the first broadcast anchor slot. The predetermined time is configured for synchronous playback of the audio data at a local end and one or more opposite ends, the predetermined broadcast interval is M times of the fixed interval, M is a positive integer, the predetermined time is X times of the broadcast interval, and the X is a positive integer. Thereby, synchronous playback of audio data from one point to multiple points can be realized.

Abstract: A technique for Bluetooth wireless communication is described. According to one aspect of the technique, Bluetooth data from a data source is received in a first wireless device through an antenna and a Bluetooth radio frequency transceiver thereof via a Bluetooth connection with the data source. The Bluetooth data is used to generate a modulation signal according to a narrowband orthogonal multi-carrier modulation technology. The modulation signal is transmitted to a second wireless device through the antenna and the Bluetooth radio frequency. The antenna and the Bluetooth radio frequency transceiver are time-multiplexed by the Bluetooth connection between the first wireless device and the data source, and the wireless connection between the first wireless device and the second wireless device. The described technique can be advantageously used for expanding the distance of Bluetooth wireless propagation of Bluetooth devices.