| 数字音频压缩中的变换编码算法 |
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| 引用本文： | 梁彬,吴镇扬.数字音频压缩中的变换编码算法[J].电声技术,1999(7):3-6. |
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| 作者姓名： | 梁彬 吴镇扬 |
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| 作者单位： | 东南大学无线电工程系,南京,210096 |
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| 摘 要： | 变换编码是音频压缩中的一个重要部分，文中叙述ＭＰＥＧ音频编码标准中的变换编码技术，包括改进余弦变换和反变换（ＭＤＣＴ和ＩＭＤＣＴ）时域混叠抵消与自适应窗选择，详细推导了ＭＤＣＴ和ＩＭＤＣＴ的快速算法。
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| 关 键 词： | 改进余弦变换(MDCT) 时域混叠抵消 自适应窗选择 |
| 修稿时间： | 1999-03-26 |
Transfom Coding Algorithm in Digita1 Audio Compression |
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| Liang Bin,Wu Zhenyang.Transfom Coding Algorithm in Digita1 Audio Compression[J].Audio Engineering,1999(7):3-6. |
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| Authors: | Liang Bin Wu Zhenyang |
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| Affiliation: | Liang Bin & Wu Zhenyang |
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| Abstract: | Transform coding is an important part of audio compression. In this article,the transform coding technique of MPEG audio coding standard was presented including Modified Discrete Cosine Transform and its Inverse Transform (MDCT & IMDCT),Time Domain Aliasing Cancellation (TDAC) and adaptive window selection. The derivation of MDCT and IMDCT fast algorithm were given in detail. |
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| Keywords: | Modified discrete cosine transform (MDCT) Time domain aliasing cancellation Adaptive window selection |
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