Real-time audio interaction method of multi-Bluetooth audio equipment

Abstract

The invention discloses a real-time audio interaction method of multi-Bluetooth audio equipment. The Bluetooth audio equipment comprises at least one piece of first Bluetooth audio equipment and at least one piece of second Bluetooth audio equipment. The real-time audio interaction method comprises the following steps of respectively arranging LE Audio chips in the first Bluetooth audio equipmentand the second Bluetooth audio equipment, establishing Bluetooth connection between the first Bluetooth audio equipment and the second Bluetooth audio equipment and conducting Bluetooth data packet transmission through the LE Audio chips. The LE Audio chip adopts an LC3 codec, has a very high compression ratio, and can greatly reduce the transmission time of audio data, so that the total transmission delay of the audio data is reduced to meet the requirement of on-site real-time interaction; moreover, Bluetooth broadcasting and multi-stream transmission functions are also achieved, and a purpose that one piece of first Bluetooth audio equipment broadcasts one or more audio streams to a plurality of pieces of second Bluetooth audio equipment can be realized, so as to meet the demands of on-site multi-person real-time entertainment audios.

Description

technical field [0001] The invention relates to the technical field of audio signal processing, in particular to a real-time audio interaction method for multiple Bluetooth audio devices. Background technique [0002] Currently, Bluetooth audio transmission on the market is generally based on the A2DP protocol, which supports most standard audio compression codecs. In view of the computing power of the smart mobile terminal, in the audio transmission process of the smart mobile terminal, an SBC encoder is generally used to compress and encode the audio data, and then transmit it from the sending end to the receiving end. [0003] However, the SBC encoder takes a long time to encode audio data, resulting in a high internal delay; secondly, the SBC encoder compresses audio data relatively low. During the transmission process, one frame of encoded audio data is filled into the A2DP Bluetooth When the data packet needs to be decomposed into two audio data frames to form an A2DP...

AI Technical Summary

Problems solved by technology

[0003] However, the SBC encoder takes a long time to encode audio data, resulting in a high internal delay; secondly, the SBC encoder compresses audio data relatively low. During the transmission process, one frame of encoded audio data is filled into the A2DP Bluetooth When the data packet needs to be decomposed into two audio data frames to form an A2DP Bluetooth data packet for transmission, the SBC decoder will only decode the decomposed frame after receiving two or more A2DP Bluetooth data packets, greatly Increase transmission delay time

[0004] Therefore, the current audio transmission method based on SBC encoding has a high delay, and cannot meet the needs of live real-time entertainment audio in practical applications, such as live singing in APP based on mobile terminals, live multiplayer duets, audio games, electronic battle games, especially The audio delay of electronic battle will cause the sound and image to be out of sync, which will greatly affect the user's operation experience during the battle

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