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Method and device for processing audio data

A technology of audio data and processing method, which is applied in the field of data processing, can solve problems such as unsatisfactory real-time performance and low coding efficiency, and achieve real-time coding, improve transmission efficiency, and improve efficiency

Inactive Publication Date: 2015-07-22
WUXI TVMINING MEDIA SCI & TECH
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AI Technical Summary

Problems solved by technology

[0004] However, when performing AAC-ELD encoding on PCM audio data in the prior art, due to the use of single-thread encoding, the encoding efficiency is low and cannot meet the real-time requirements

Method used

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  • Method and device for processing audio data
  • Method and device for processing audio data
  • Method and device for processing audio data

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Embodiment Construction

[0049] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0050] figure 1 Shown is a flowchart of a method for processing audio data in an embodiment of the present invention, the method includes the following steps S11-S15:

[0051] Step S11, collecting audio data in PCM data format.

[0052] In this step, PCM (Pulse Code Modulation, Pulse Code Modulation) is used to encode the audio data, and the continuously changing analog signal is converted into a digital code through three steps of sampling, quantization, and encoding. Its biggest advantage is good sound quality.

[0053] Step S12, performing frame division processing on the collected PCM audio data to obtain PCM data frames.

[0054] Step S13, calling at least tw...

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PUM

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Abstract

The invention discloses a method and a device for processing audio data. The method includes acquiring the audio data in pulse code modulation (PCM) data formats; framing the acquired PCM audio data to obtain PCM data frames; calling at least two concurrent coding threads and distributing the PCM data frames to the concurrent coding threads according to preset strategies; carrying out AAC-ELD (advanced audio coding-enhanced low display) coding on the PCM data frames by the aid of the concurrent coding threads to obtain coded AAC-ELD data frames; transmitting the AAC-ELD data frames. The method and the device have the advantages that the audio data coding efficiency can be improved, and accordingly the purpose of coding the audio data in real time can be achieved.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to an audio data processing method and device. Background technique [0002] One goal of audio data encoding is to compress the audio signal to a desired limited amount of information while maintaining as much of the original sound quality as possible. Usually, PCM (Pulse Code Modulation, Pulse Code Modulation) can be used to encode audio data, and the continuously changing analog signal is converted into digital code through three steps of sampling, quantization and encoding. Its biggest advantage is good sound quality, but its biggest disadvantage is It's just big. [0003] AAC (Advanced Audio Coding, Advanced Audio Coding)-ELD (Enhanced Low Delay, Enhanced Low Delay) is a communication codec based on the common audio codec AAC (mainly used in mainstream music download and streaming platforms). AAC-ELD provides CD-like audio quality for video calls and telephony at very ...

Claims

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Application Information

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IPC IPC(8): G10L19/02G10L19/20
Inventor 张金良
Owner WUXI TVMINING MEDIA SCI & TECH
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