Audio synchronous playback method and system for Bluetooth pair box

Abstract

The invention relates to an audio synchronous playing method and system for a Bluetooth paired speaker. The method comprises the following steps: according to a host Bluetooth clock when sending a synchronization command and a host Bluetooth clock interval experienced during two adjacent interrupt procedures, estimating a target host Bluetooth clock, that is, after the synchronization command is sent, a host plays the audio at the next interruption; calculating the audio data amount played during the two adjacent interrupt procedures according to the host playing speed and the host Bluetooth clock interval experienced during the two adjacent interrupt procedures, and calculating the target playing position according to the audio data amount and the current host audio playing position; and sending the target playing position and the target host Bluetooth clock to a slave. The audio synchronous playing method and the system for the Bluetooth paired speaker provided by the invention enable synchronous audio playing between the slave and the host, and avoid the music playing asynchronization through different channels due to the crystal oscillator difference between independent devices.

Description

technical field [0001] The invention relates to the technical field of audio processing, in particular to a Bluetooth-to-box audio synchronous playback method and system. Background technique [0002] With the development of audio technology, the application of multi-channel analog stereo is becoming more and more extensive. The application of multi-channel analog stereo technology to the advanced audio of the Bluetooth box can truly reproduce the sound of the original sound field, and can bring better listening effects to the audience. [0003] The advanced audio of the Bluetooth pair box is to connect the different channels of the host device and the slave device through Bluetooth, so that different channels can play the same audio file. However, due to differences in crystal oscillators between independent devices, the cumulative error caused by differences in crystal oscillators will cause music playback on different channels to be out of sync. Contents of the inventi...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a Bluetooth-to-box audio synchronization playback method for the problem that the cumulative error caused by the difference in the crystal oscillator will cause the music playback of different channels to be out of sync.

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