| DSP Builder实现MP3音频解码中的IMDCT |
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| 引用本文： | 苏祖辉,陈钟鸣,唐伟.DSP Builder实现MP3音频解码中的IMDCT[J].合肥工业大学学报(自然科学版),2005,28(2):168-170. |
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| 作者姓名： | 苏祖辉 陈钟鸣 唐伟 |
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| 作者单位： | 1. 合肥工业大学,理学院,安徽,合肥,230009
2. 世宏科技有限公司,江苏,苏州,215021 |
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| 摘 要： | 文章主要讨论如何使用 DSP Builder来实现 MP3音频解码中的 IMDCT。MDCT和 IMDCT是 2种重叠正交变换 ,也是 MPEG音频标准中运算量最大的 2种运算 ,主要应用在数字信号处理当中。采用正弦递归循环公式 ,实现 IMDCT的内核 ,得到一种该变换的高效实现方法 ,这种方法特别适合 VLSI的并行实现
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| 关 键 词： | DSP Builder 重叠正交变换 MP3音频译码 |
| 文章编号： | 1003-5060(2005)02-0168-03 |
| 修稿时间： | 2004年4月30日 |
Implementation of the inverse MDCT in MP3 by DSP Builder |
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| SU Zu-hui,CHEN Zhong-ming,TANG Wei.Implementation of the inverse MDCT in MP3 by DSP Builder[J].Journal of Hefei University of Technology(Natural Science),2005,28(2):168-170. |
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| Authors: | SU Zu-hui CHEN Zhong-ming TANG Wei |
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| Institution: | SU Zu-hui~1,CHEN Zhong-ming~1,TANG Wei~2 |
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| Abstract: | This paper mainly deals with the implementation of the recursive algorithms of the inverse modified discrete cosine transform(IMDCT) in MP3 by DSP Builder. Modified discrete cosine transform(MDCT) and IMDCT,which are lapped orthogonal transform used in signal processing,are two of the most intensive computational operation in the MPEG audio coding standard. In the paper,IMDCT of the general length is efficiently implemented using the regressive structure derived from the sinusoidal recursive formulas. The proposed regular structures are particularly suitable for parallel very-large-scale-integration(VLSI) realization. |
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| Keywords: | DSP Builder inverse modified discrete cosine transform(IMDCT) MP3 audio decoding |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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