Processing method and device of audio data

A technology of audio data and processing method, which is applied in the field of data processing, can solve the problems of unsatisfactory real-time performance and low coding efficiency, and achieve the effects of reducing PCM data volume, fast transmission, and reducing data volume

Inactive Publication Date: 2015-06-24
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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  • Processing method and device of audio data
  • Processing method and device of audio data
  • Processing method and device of audio data

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Embodiment Construction

[0048] 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.

[0049] 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-S14:

[0050] Step S11, collecting monophonic audio data in PCM data format.

[0051] In this step, PCM (Pulse Code Modulation, Pulse Code Modulation) is used to encode the monophonic audio data, and the continuously changing analog signal is converted into digital code through the three steps of sampling, quantization and encoding. That is, the sound quality is good.

[0052] In step S12, the collected monophonic PCM audio data is divided into frames to obtain PCM data frames.

[0053] Step S13, submitt...

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Abstract

The invention discloses a processing method and device of audio data. The processing method and device of the audio data are used for improving coding efficiency of the audio data and achieving the purpose of real-time coding. The method includes the steps that single-track audio data are collected in a pulse code modulation (PCM) data format; the collected single-track PCM data are subjected to framing handling to obtain PCM data frames; the PCM data frames are submitted to an AAC-ELD coder to generate AAC-ELD data frames; the AAC-ELD data frames are sent.

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 ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/005
Inventor 张金良
Owner WUXI TVMINING MEDIA SCI & TECH
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