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�������պ����ѧѧ�� 2003, Vol. 29 Issue (7) :649-653    DOI:
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MPEG��Ƶ��׼�����뷢չ
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Techniques and developments of MPEG audio
Li Chao, Xiong Zhang, Ouyang Yuanxin*
School of Computer Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ MPEG(Moving Pictures Experts Group)ϵ�б�׼��ISO/IEC�ƶ�,�Ǽ������ý��Ӧ����㷺�Ĺ��ʱ�׼֮һ.MPEG��Ƶ��Ϊ��׼����Ҫ����,�䷢չ���������ݱ�ʾ�����������Լ�������Ӧ�ÿ�ܵȽ׶�.Ȼ��,��Ϊ֧�ż���,����Ч�ı��뷽���͸���ȷ�������ֶ���Ȼ�ǵ�ǰ�о��������ص�.�ۺϷ�����MPEGϵ�б�׼����Ƶ��������״,������������˽�һ���о�����Ҫ��������ɼ�������.
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Abstract�� 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.
Keywords�� psychoacoustic   voice coding   sound masking   intellectual property   interoperability     
Received 2002-05-13;
Fund:

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About author: �� ��(1974-),��,�Ĵ���ɽ��,��ʿ��, licc li@sina.com.
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�, ���, ŷ��Ԫ��.MPEG��Ƶ��׼�����뷢չ[J]  �������պ����ѧѧ��, 2003,V29(7): 649-653
Li Chao, Xiong Zhang, Ouyang Yuanxin.Techniques and developments of MPEG audio[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2003,V29(7): 649-653
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