Method for Realizing Precise Synchronous Playback of Bluetooth Headphones

Abstract

The invention provides a method for realizing accurate synchronous playing of a Bluetooth headset. The method comprises the following steps: sending an audio signal to a left Bluetooth headset througha market device, wherein the left Bluetooth headset sends the audio signal to a right Bluetooth headset at the starting time of some slot, and the lasting time of each slot is fixed; converting the received audio signal through the right Bluetooth headset to obtain a timing synchronization signal, timing synchronization error and carrier synchronization error; synchronizing the starting time of the timing synchronization signal and the slot starting time that the left Bluetooth headset sends the audio signal to the right Bluetooth headset; synchronously triggering related DMA controllers through the left Bluetooth headset and the right Bluetooth headset in some time; synchronously accessing the audio signal through the DMA controller of the left Bluetooth headset and the right Bluetooth headset; and sending the audio signal to related playing devices. According to the method, the left Bluetooth headset and the right Bluetooth headset are subjected to time synchronization, and on thatbasis, data are accessed through the related DMA controllers, and thus the accurate synchronizing playing is achieved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for realizing accurate synchronous playback by a Bluetooth earphone. Background technique [0002] With the progress of society and the improvement of people's living standards, earphones have become an indispensable daily necessities for people. Traditional wired earphones are connected to smart devices (such as smartphones, laptops, tablets, etc.) through wires, which will restrict 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 headphones came into being. [0003] One implementation of the existing true wireless earphones is that the smar...

AI Technical Summary

Problems solved by technology

In the existing true wireless headset system, it is often difficult to achieve better synchronization between the left and right ears

For example, when playing music, it is difficult to play the music in the left and right ears at the same time, which greatly affects the music quality

During a voice call, it is difficult to accurately play the voices of the left and right ears at the same time

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