Audio data recovery method and device and Bluetooth equipment

A technology of audio data and recovery methods, applied in speech analysis, digital transmission systems, instruments, etc., can solve the problems of audio data transmission errors, poor audio quality, etc., to increase transmission distance, avoid stalls, and achieve error audio data recovery Effect
CN110782906AActive Publication Date: 2020-02-11NANJING ZGMICRO CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING ZGMICRO CO LTD
Publication Date
2020-02-11

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Abstract

The invention discloses an audio data recovery method and device and Bluetooth equipment. The method comprises the following steps: receiving audio data, wherein the audio data comprises M segments offrame data and CRC check information corresponding to each segment of frame data; and recovering the audio data according to the CRC check information in the N errors of audio data when the audio data of N retransmission windows are all error data. According to the method and the device, error data retransmitted for multiple times is not lost under the condition that the data retransmitted for multiple times is still wrong, but redundant information in the error data retransmitted for multiple times is fully utilized for error correction, so that bad frame recovery is realized, the transmission distance of audio broadcasting is effectively increased, and the situation that audio playing is jammed can be prevented even under the interference condition.
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Description

technical field

[0001] The present application relates to the technical field of bluetooth, in particular to an audio data recovery method, device and bluetooth equipment. Background technique

[0002] Bluetooth audio broadcasting means that the Bluetooth speaker (main speaker) broadcasts the audio of the mobile phone through the wireless connection channel (BR / EDR Synchronization Scan Channel) while receiving the audio playback of the mobile phone, and other multiple speakers (slave speakers) can play synchronously. This audio, thus getting rid of the shackles of the line. However, because the stability of the Bluetooth wireless connection is worse than that of the wired connection, the sound playing from the speaker may freeze when the interference is relatively large or the connection distance is long.

[0003] The disadvantages of the prior art are:

[0004] In the case of relatively large interference or a long connection distance, audio data transmission errors may o...

Claims

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