Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for playing audio file

A technology for audio files and audio playback, applied in the field of communication electronics, can solve problems such as loss of sound quality, achieve the effect of reducing sound quality loss and making up for structural defects

Inactive Publication Date: 2013-01-16
北京君正集成电路股份有限公司
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a method and device for playing an audio file, which is used to solve the problem of loss of sound quality in the prior art when playing an audio file with a quantization precision value of 24bit or 32bit

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for playing audio file
  • Method and device for playing audio file
  • Method and device for playing audio file

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the present invention will be further detailed below in conjunction with the accompanying drawings illustrate.

[0029] In the method provided by the embodiment of the present invention, after adding the processing method to the audio file with a larger quantization precision value in the audio processing system of the Android system, in addition to being able to use the original default processing method to process the audio file with a lower quantization precision value The playback processing can also realize the processing and playback of higher-quality audio files with quantization precision values ​​of 24bit and 32bit, which improves the audio processing system of the Android syste...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of communication electron, in particular to a method and a device for playing an audio file. The method comprises the following steps: decoding the audio file to be played to acquire a target audio file; judging whether the quantitative accuracy value of the target audio file is more than the preset value or not; when determining that the quantitative accuracy value of the target audio file is more than the preset value, establishing an audio track for the target audio file; and adding the audio track to a corresponding thread and playing the audio file to be played by using the thread. Through the method, loss of tone quality when the audio file with the quantitative accuracy value of 24 bit or 32 bit is played in the prior art is avoided.

Description

technical field [0001] The invention relates to the technical field of communication electronics, in particular to a method and device for playing audio files. [0002] Background technique [0003] The Android audio system has two major services: one is AudioFlinger and the other is AudioPolicyService. AudioFlinger accesses AudioHardware downwards to output audio data and control audio parameters. At the same time, AudioFlinger provides services upward through the IAudioFlinger interface. Therefore, AudioFlinger plays a connecting role in Android's audio system framework, and its status is very important. Such as figure 1 As shown, the original audio system of the Android system uses AudioFlinger to process audio files as follows: [0004] Step 101, decoding the audio file to be played; [0005] Step 102, judge whether the quantization precision value of the audio file after decoding is greater than 16bit; If it is greater than execution step 104; If not greater than,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G11B20/10
Inventor 罗玉海
Owner 北京君正集成电路股份有限公司