Encoding/decoding method and system of wireless Bluetooth earphone communication audio

Abstract

The invention provides an encoding / decoding method and system of a wireless Bluetooth earphone communication audio. The method comprises the following steps of making a main Bluetooth earphone receivethe audio of an SBC code sent by intelligent equipment and conduct partial SBC decoding on the received audio; conducting bit flow unpacking on the received audio to obtain a first sub-band signal and conducting self-adaptive pulse modulating on the first sub-band signal to obtain a left sound track sub-band signal and a right sound track sub-band signal; selecting the left sound track sub-band signal or the right sound track sub-band signal and conducting partial SBC encoding; after conducting self-adaptive pulse modulating on the left sound track sub-band signal or the right sound track sub-band signal, conducting bit flow packing to obtain the audio of the SBC code which needs to be forwarded. The main Bluetooth earphone only conducts partial SBC decoding and partial SBC encoding on the received audio, the operation amount of the main Bluetooth earphone is greatly reduced, and the time delay of audio forwarding is lowered.

Description

technical field [0001] The invention relates to the technical field of bluetooth communication, in particular to a method and system for encoding / decoding audio of wireless bluetooth earphone communication. Background technique [0002] With the progress of society and the improvement of people's living standards, earphones and speakers have become indispensable daily necessities for people. Traditional wired earphones are connected to smart devices through wires, which restricts the wearer's movement, especially in sports situations. At the same time, the winding and pulling of the headphone cable, as well as the stethoscope effect all affect the user experience. Ordinary Bluetooth headsets cancel the connection between the headset and the smart device, but there is still a connection between the left and right ears. True Wireless Stereo (TWS) headphones and wireless speakers emerged as the times require. [0003] A common working method of existing TWS earphones (or mul...

AI Technical Summary

Problems solved by technology

In the prior art, the master Bluetooth headset first decodes the stereo SBC encoded audio from the smart device, then separates the audio data of a certain channel, then performs SBC encoding on the audio data, and finally transmits it to the slave headset (or main speaker), however, this process of the prior art requires a large amount of calculation for the main Bluetooth headset, which increases the delay of the system

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