| MPEG-4 AAC解码器在NIOS II平台上的实现和优化 |
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| 引用本文： | 潘岳,王建中,戎蒙恬,刘文江.MPEG-4 AAC解码器在NIOS II平台上的实现和优化[J].电声技术,2006(11). |
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| 作者姓名： | 潘岳 王建中 戎蒙恬 刘文江 |
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| 作者单位： | 上海交通大学信息安全学院 上海200240 |
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| 基金项目： | 国家自然科学基金委创新群体基金项目(60521002)，上海应用材料研究与发展项目资助(0501) |
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| 摘 要： | 给出了MEPG-4AAC实时解码器在NIOSII平台的实现方案,介绍了MPEG-4AAC-LC解码算法及各关键模块优化算法。在完成实时解码要求下,结合NIOSII平台特性,对解码器在软件代码与处理器上进行优化。实验结果表明CPU时钟为80MHz时能达到实时解码要求。
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| 关 键 词： | MPEG-4AAC NIOSII 音频解码器 |
Implementation and Optimization of MPEG-4 AAC Decoder Based on NIOS II |
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| PAN Yue,WANG Jian-zhong,RONG Meng-tian,LIU Wen-jiang.Implementation and Optimization of MPEG-4 AAC Decoder Based on NIOS II[J].Audio Engineering,2006(11). |
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| Authors: | PAN Yue WANG Jian-zhong RONG Meng-tian LIU Wen-jiang |
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| Abstract: | The implementation of MEPG-4 AAC real-time decoder based on NIOS II is presented.The brief decoder algorithm of MPEG-4 AAC and the techniques to optimize some key modules are introduced.To obtain the request of real-time decoder,the decoder on software code and processor with the features of NIOS II is optimized.The experimental results show that the decoder satisfies the real-time request. |
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| Keywords: | MPEG-4 AAC NIOS II audio decoder |
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