And the new patent licensing policy introduced by MPEG-4 is considered to be too harsh and unacceptable. Many such reasons urgently need a new audio video coding standard to be introduced.
而MPEG - 4出台的新专利许可政策被认为过于苛刻无法接受，诸多此类原因都迫切需要一种新的视频编码标准出台。
By analyzing human physiological audio system and its masking effect, this paper illustrates the psychoacoustic model in audio part of the ISO video coding standard MPEG1.
介绍了人耳生理系统和掩蔽效应的特性，并阐述了视音频压缩标准MPEG1音频部分的心理声学模型。
By analyzing human physiological audio system and its masking effect, this paper illustrates the psychoacoustic model in audio part of the ISO video coding standard MPEG1.
介绍了人耳生理系统和掩蔽效应的特性，并阐述了视音频压缩标准MPEG1音频部分的心理声学模型。
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