数字音频压缩编码技术及其应用

音频信号数字化后的数据量相当大，不利于传输和存储，在日益广泛应用的数字技术中，数字音频的压缩成为其中的关键技术之一。本文先简要介绍了几种非压缩数字音频格式，随后，阐述音频压缩编码技术的发展现状，并分析了国内外现存的一些商用音频压缩系统，如G系列数字音频压缩标准、MPEG系列伴音标准及杜比数码系列和各自不同的应用领域。最后，对数字音频压缩编码技术进行了展望。

Digital audio compression coding technology and its application

A large amount of the data are present after audio signal is digitized. It is not convenient for transmission and storage of the signal. Digital audio coding has become one of the key techniques in digital technique in which is of the signal applied today. This paper describes some standard audio coding methods, such as AC-x digital audio, MPEG-x, G-x audio standards and analyzes some of the important audio coding applies fields. Finally, it discussed the prospect of digital audio compression.