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

Active Publication Date: 2020-02-11
NANJING ZGMICRO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the case of relatively large interference or long connection distance, audio data transmission errors may occur, resulting in poor audio quality

Method used

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  • Audio data recovery method and device and Bluetooth equipment
  • Audio data recovery method and device and Bluetooth equipment
  • Audio data recovery method and device and Bluetooth equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] figure 1 A schematic diagram of the implementation of the audio data recovery method in the embodiment of the present application is shown. As shown in the figure, the method includes:

[0031] Step 101, receiving audio data; the audio data includes M sections of frame data and CRC check information corresponding to each section of frame data;

[0032] Step 102. When the audio data in the N retransmission windows are all erroneous data, restore the audio data according to the CRC check information in the N erroneous audio data; where M and N are positive integer.

[0033] The audio data recovery method provided by the embodiment of the present application recovers erroneous audio data by segmentally adding several CRC check bytes in the transmitted data packet.

[0034] During specific implementation, when audio data is transmitted through Bluetooth, the controller CONTROLLER layer of the receiving end of the Bluetooth signal will directly upload to the host HOST laye...

Embodiment 2

[0070] Based on the same inventive concept, the embodiment of the present application also provides an audio data recovery device. Since the problem-solving principle of the audio data recovery device is similar to the method provided in Embodiment 1 of the present application, the implementation of the audio data processing device can be Refer to the implementation of the method, and the repetition will not be repeated.

[0071] figure 2 A schematic structural diagram of an audio data recovery device according to an embodiment of the present application is shown. As shown in the figure, the device includes:

[0072] The receiving module 201 is configured to receive audio data; the audio data includes M sections of frame data and CRC check information corresponding to each section of frame data;

[0073] The recovery module 202 is used to restore the audio data according to the CRC check information in the N erroneous audio data when the audio data in the N retransmission wi...

Embodiment 3

[0090] Based on the same inventive concept, the embodiment of the present application also provides a bluetooth device. Since the principle of the bluetooth device to solve the problem is similar to the method provided in embodiment 1 of the present application, the implementation of the bluetooth device can refer to the implementation of the method, repeat The place will not be repeated.

[0091] image 3 A schematic diagram of the structure of the Bluetooth device according to the embodiment of the present application is shown. As shown in the figure, the Bluetooth device provided by the embodiment of the present application includes the audio data recovery device in Embodiment 2 of the present application.

[0092] During specific implementation, the bluetooth device in the embodiment of the present application may include a bluetooth headset, a bluetooth speaker, a bluetooth gateway, a bluetooth mp3, a bluetooth flash disk, a bluetooth vehicle-mounted device, a bluetooth a...

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PUM

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/00H04W4/80H04W28/04
CPCG10L19/0017H04W4/80H04W28/04G10L19/005G10L19/0204H04L1/0061H04L1/0047H04L1/0045
Inventor 冯宇红王海业袁赟徐斌熊焱张亦农杨晓东
Owner NANJING ZGMICRO CO LTD
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