MPEG音频标准技术与发展

Techniques and developments of MPEG audio

MPEG(MovingPicturesExpertsGroup)系列标准由ISO IEC制订 ,是计算机多媒体应用最广泛的国际标准之一 .MPEG音频作为标准的重要内容 ,其发展经历了内容表示、内容描述以及互操作应用框架等阶段 .然而 ,作为支撑技术 ,更高效的编码方法和更精确的描述手段仍然是当前研究工作的重点 .综合分析了MPEG系列标准中音频技术的现状 。

Moving pictures experts group(MPEG) series standards have become one of the most popular families in the field of multimedia application. MPEG audio is an elementary part of these standards. With the normalization of new standards such as MPEG 4/7/21 in the recent several years, a novel multimedia application interoperability framework will be founded. However, many attentions should still be concentrated on improving the efficiency of audio coding and on mining more precise content based description methods. A detailed review of the techniques and developments of MPEG audio standards was made, and possible problems of existing standards were pointed out. The conclusion and a brief description of the perspectives of MPEG audio were given.