数字音频压缩编码及在软件中播放音频文件  

Digital Audio Compression Coding and Playing Audio Files in Software

作　　者：蒋尚亭[1] 金毅仁[2] JIANG Shang-ting,JIN Yi-ren（1.Computer Center,Anhui Vocational College of Press and Publication,Hefei 230601,China;2.School of Electric Engineering and Automation,Hefei University of Technology,Hefei 230009,China）

机构地区：[1]安徽新闻出版职业技术学院计算机中心,安徽合肥230601 [2]合肥工业大学电气及自动化工程学院,安徽合肥230009

出　　处：《电脑知识与技术》2011年第2期875-877,889,共4页Computer Knowledge and Technology

摘　　要：模拟音频信号经过数字化后,会产生很大的数据量,不适合存储和传输的需要。数字音频的压缩编码已经成为一门非常重要的技术。该文主要介绍数字音频信号的常用压缩编码方法,如MPEG-1、MPEG-2、AC-3数字音频压缩编码标准,并阐述了各自的性能特点及应用领域。然后结合应用软件——Delphi,介绍制作音频播放器的过程,并利用音频播放器实现mp3等格式音频文件的播放。A quantity of data are present after analog audio signal is digitized.It is not convenient for transmission and storge of signal.Digital audio compression coding has became an very important technology.The paper mainly introduces the digital audio signal compression coding methods,such as MPEG-1,MPEG-2,AC-3 digital audio compression coding standards,and describes their performanes and applies fields.Then introduces the process of making audio-player and playing mp3 files and other kinds of files in Delphi application software.

关 键 词：音频信号 数字音频压缩编码 音频播放器 

分 类 号：TP37[自动化与计算机技术—计算机系统结构;自动化与计算机技术—计算机科学与技术]