This paper analyses the key technologies used in MP3, such as subband filter, psychoacoustical model and dynamic noise allocation.

笔者对MP3所用到的几个关键技术，如子带滤波、心理声学模型、动态噪声分配等做出简明分析。

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This paper introduces the key technologies used in MP3, such as subband filter, psychoacoustical model and dynamic noise allocation.

笔者对MP3所用到的几个关键技术，如子带滤波、心理声学模型、动态噪声分配等做出简明分析。

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At the same time, we combine the dynamic filter technique which chose different passband with different depth to hold the high signal-to-noise ratio.

同时融入动态滤波技术，根据不同深度选择了不同的通带范围，有效地保证了信号的信噪比。

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At the same time, we combine the dynamic filter technique which chose different passband with different depth to hold the high signal-to-noise ratio.

同时融入动态滤波技术，根据不同深度选择了不同的通带范围，有效地保证了信号的信噪比。

youdao