Audio data recovery method, device and Bluetooth device

一种音频数据、恢复方法的技术，应用在语音分析、数字传输系统、仪器等方向，能够解决音频质量差、音频数据传输错误等问题，达到增加传输距离、避免卡顿、实现错误音频数据恢复的效果

Active Publication Date: 2022-08-05
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, device and Bluetooth device
  • Audio data recovery method, device and Bluetooth device
  • Audio data recovery method, device and Bluetooth device

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, receive audio data; Described audio data comprises M segment frame data and the CRC check information corresponding to each segment frame data;

[0032] Step 102, when the audio data of the N retransmission windows are all erroneous data, recover the audio data according to the CRC check information in the N erroneous audio data; wherein, 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 adding several CRC check bytes into segments in a transmitted data packet.

[0034] In specific implementation, when audio data is transmitted through Bluetooth, the CONTROLLER layer of the controller at the receiving end of the Bluetooth signal will directly upload the correct d...

Embodiment 2

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

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

[0072] A receiving module 201 is used to receive audio data; the audio data includes M segments of frame data and CRC check information corresponding to each segment of frame data;

[0073] The recovery module 202 is configured to recover the audio data according to the CRC check information in the N wrong audio data when the audio data of th...

Embodiment 3

[0090] Based on the same inventive concept, an embodiment of the present application also provides a Bluetooth device. Since the principle of solving the problem of the Bluetooth device 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, repeating will not be repeated here.

[0091] image 3 A schematic structural diagram of a Bluetooth device according to an 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 apparatus in Embodiment 2 of the present application.

[0092] During specific implementation, the Bluetooth devices in the embodiments of this application may include Bluetooth headsets, Bluetooth speakers, Bluetooth gateways, Bluetooth MP3s, Bluetooth flash drives, Bluetooth vehicle-mounted devices, Bluetooth adapters, etc., whic...

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PUM

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Abstract

Audio data recovery method, device and bluetooth device, comprising: receiving audio data; the audio data includes M segments of frame data and CRC check information corresponding to each segment of frame data; the audio data in the N retransmission windows are When the data is erroneous, the audio data is recovered according to the CRC check information in the N erroneous audio data. The present application does not discard the erroneous data retransmitted many times, but makes full use of the redundant information in the erroneous data retransmitted many times to correct errors and realize bad frame recovery when the data is retransmitted many times and still has errors, It can effectively increase the transmission distance of audio broadcasting, and avoid the situation of audio playback being stuck even in the case of interference.

Description

technical field [0001] The present application relates to the field of Bluetooth technology, and in particular, to an audio data recovery method, device, and Bluetooth device. 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 speakers (slave speakers) can play synchronously. This audio, thus getting rid of the shackles of the line. However, since the stability of the Bluetooth wireless connection is worse than that of the wired connection, the sound playback from the speaker may be stuck when the interference is relatively large or the connection distance is long. [0003] The disadvantages of the prior art are: [0004] Audio data transmission errors may occur in the case of large interference or long connection distances, resulting i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/00H04W4/80H04W28/04H04L1/00
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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