| 高效AVS音频上下文位平面编码器设计 |
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| 引用本文： | 张国成,刘佩林.高效AVS音频上下文位平面编码器设计[J].电声技术,2006(12):53-58. |
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| 作者姓名： | 张国成 刘佩林 |
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| 作者单位： | 上海交通大学,电子信息与电气工程学院,上海,200240 |
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| 摘 要： | 研究了AVS音频编码标准中上下文位平面编码算法,分析了编码算法的特点。通过对上下文平面编码算法的优化,提出了一种适合ASIC实现的硬件结构,通过合理设计二级流水线,能近似达到每时钟1比特矢量的编码速率,在保证编码速度前提下大幅降低了硬件资源。
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| 关 键 词： | 上下文位平面编码 AVS音频 比特层 哈夫曼编码 流水线 |
| 文章编号： | 1002-8684(2006)12-0053-06 |
| 收稿时间： | 2006-08-16 |
| 修稿时间： | 2006年8月16日 |
A Design of High Efficient Context-Dependent Bitplane Coder for AVS Audio |
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| ZHANG Guo-cheng,LIU Pei-lin.A Design of High Efficient Context-Dependent Bitplane Coder for AVS Audio[J].Audio Engineering,2006(12):53-58. |
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| Authors: | ZHANG Guo-cheng LIU Pei-lin |
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| Affiliation: | School of Electronic, Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | The CBC(Context-dependent Bitplane Coding) for AVS audio is studied. The characteristics of CBC are analyzed. Through optimizing CBC, a suitable architecture for ASIC implementation is proposed. With the two-stage sound pipeline design, the speed of nearly one bit-vector per clock can be reached. Furthermore, the hardware resources are minimized on the base of the same encoding speed. |
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| Keywords: | context-dependent bitplane coding AVS audio bitplane Huffman coding pipeline |
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