| 基于ADSP2187的HDTV音频编码器系统 |
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| 引用本文： | 沈宇键,叶玮,余松煜.基于ADSP2187的HDTV音频编码器系统[J].数据采集与处理,2002,17(4):433-436. |
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| 作者姓名： | 沈宇键 叶玮 余松煜 |
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| 作者单位： | 上海交通大学图像通信与信息处理研究所,上海,200030 |
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| 摘 要： | 设计并实现了基于ADSP2187处理器的高清晰度电视信源编码系统中的音频编码器。编码器由实时编码和PES打包构成，实时编码完成立体声数字音频的编码压缩，压缩的码流符合ISO／IEClll83-3MPEG-2标准，同时还接收Dblby AC—3ES流输入。PES打包完成MPEG-2与AC-3ES流的PES打包。文中阐述了编码器的工作原理及设计思想，描述了该编码器硬件系统结构，分析了硬件设计的时序。
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| 关 键 词： | 高清晰度电视 音频编码器系统 HDTV ADSP2187 信源编码系统 音频标准 MPEG |
| 文章编号： | 1004-9037(2002)04-0433-04 |
| 修稿时间： | 2001年9月30日 |
Audio Encoder System in HDTV Based on ADSP2187 Implementation |
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| Shen Yujian Ye Wei Yu Songyu Institute of Image communication & Information Processing,Shanghai Jiaotong University Shanghai ,P.R.China.Audio Encoder System in HDTV Based on ADSP2187 Implementation[J].Journal of Data Acquisition & Processing,2002,17(4):433-436. |
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| Authors: | Shen Yujian Ye Wei Yu Songyu Institute of Image communication & Information Processing Shanghai Jiaotong University Shanghai PRChina |
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| Affiliation: | Shen Yujian Ye Wei Yu Songyu Institute of Image communication & Information Processing,Shanghai Jiaotong University Shanghai 200030,P.R.China |
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| Abstract: | Design and implementation of the real-time MPEG-2 audio encoder in HDTV are presented and hardware architecture is described. The encoder is made up real-time encoding and packetization elementary system (PES) packetization parts. Real-time encoding part is designed with ADSP2187 according with ISO/IEC11183-3 MPEG-2 standard. PES packetization is described to implement elementary streams of MPEG-2 and AC-3 transforming transport stream. The principles and ideas of the encoder are proposed. Timing sequence of the hardware is analyzed. |
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| Keywords: | audio encoder ADSP2187 PES packetization |
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