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Method and system for automatically configuring audio encoding format transmitted by bluetooth A2DP

An audio coding format, Bluetooth audio technology, used in the use of transceiver near-field transmission systems, speech analysis, instruments, etc., can solve the problems of audio signal loss, high power consumption, occupation, etc.

Active Publication Date: 2011-07-06
BEIJING BAIRUI INTERNET TECH CO LTD
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Problems solved by technology

[0005] In the above-mentioned bluetooth audio application process, the audio player and the bluetooth application system at the bluetooth audio sending end are two different application programs, so that high-quality audio data needs to be collected through the bluetooth sound card in the operating system, and high-quality audio data requires Encoding and decoding conversion between the audio encoding format of the local audio file and the PCM audio encoding format, and encoding and decoding conversion between the PCM audio encoding format and the audio encoding formats such as SBC and MP3 supported by the Bluetooth audio receiver , which will inevitably cause loss of audio signal, occupy higher processor resources and lead to higher power consumption

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  • Method and system for automatically configuring audio encoding format transmitted by bluetooth A2DP
  • Method and system for automatically configuring audio encoding format transmitted by bluetooth A2DP

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Embodiment Construction

[0016] figure 1 It is a system block diagram for automatically configuring the Bluetooth A2DP transmission audio encoding format.

[0017] like figure 1 As shown, the system includes a Bluetooth audio transmitter 100 and a Bluetooth audio receiver 105 . In the present invention, there is no restriction on the Bluetooth audio receiver 105, which may be Bluetooth earphones and Bluetooth speakers currently on the market, or Bluetooth audio receivers developed in the future that support more audio encoding formats. The Bluetooth audio transmitter 100 integrates the audio transmission module 102 and the audio playback module 101 in the prior art. Wherein the audio transmission module 102 includes an A2DP connection management module 103 and a Bluetooth hardware module 104, establishes a Bluetooth link through the Bluetooth hardware module 104 and the Bluetooth audio receiver 105, and inquires which audios the Bluetooth audio receiver 105 supports through the A2DP connection manag...

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Abstract

The invention discloses a Bluetooth audio sending end in an audio encoding format and automatically configuring the transmission of high quality Bluetooth audio data, and a method and a system thereof. By comparing the audio encoding format of a local audio file with the audio encoding format supported by a Bluetooth audio receiving end, the Bluetooth audio sending end chooses an A2DP transmission audio encoding format for transmitting the high quality audio data from the Bluetooth audio sending end to the Bluetooth audio receiving end; if the audio encoding format supported by the Bluetooth audio receiving end contains the audio encoding format of the local audio file, the audio encoding format of the local audio file is selected as the A2DP transmission audio encoding format and an audio play module is added to the Bluetooth audio sending end, thereby the Bluetooth audio sending end can directly transmit the high quality audio data by an A2DP link circuit and in the audio encoding format of the local audio file to the Bluetooth audio receiving end with no need of the operation of the soundcard of the system for collecting the high quality audio data and the conversion of the audio encoding format.

Description

technical field [0001] The present invention relates to bluetooth communication technology, in particular to a bluetooth audio sending end automatically configures the A2DP transmission audio encoding format of bluetooth high-quality audio data according to the audio encoding format of the local audio file and the audio encoding format supported by the bluetooth audio receiving end methods, devices and systems. Background technique [0002] The emergence of wireless technology enables users to listen to music and make calls wirelessly. Its implementation is usually to have a wireless transceiver in the audio sending end (such as computer, PDA, mobile phone, etc.) audio receiver. [0003] For example, there is currently a Bluetooth short-range wireless communication technology that operates in the 2.4GHz Industrial-Scientific-Medical (ISM) frequency band. In the Bluetooth Advanced Audio Distribution Profile (A2DP) formulated by the Bluetooth Special Interest Group (SIG), t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B5/02
CPCH04W84/18G10L19/18H04W28/18
Inventor 王尧
Owner BEIJING BAIRUI INTERNET TECH CO LTD
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