| DRA分层音频编码技术 |
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| 引用本文： | 闫建新,王 磊.DRA分层音频编码技术[J].电视技术,2014,38(17). |
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| 作者姓名： | 闫建新 王 磊 |
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| 作者单位： | 数字音频编解码技术国家工程实验室,广东深圳,518057 |
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| 摘 要： | 提出了一种与DRA编码算法兼容的分层音频编码算法,其中环绕声分层编码采用了声道分类方式,而单声道/立体声分层编码则以残差再编码作为增强层的框架。分析和测试结果表明该DRA分层编码算法能够提供较好的声音质量,可作为信源编码与信道编码和分层调制技术完美结合应用于我国数字音频广播。
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| 关 键 词： | DRA 分层编码 数字音频广播 |
| 收稿时间： | 2014/8/11 0:00:00 |
| 修稿时间： | 2014/8/11 0:00:00 |
DRA Layered Audio Coding Technology |
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| YAN Jian-xin and WANG Lei.DRA Layered Audio Coding Technology[J].Tv Engineering,2014,38(17). |
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| Authors: | YAN Jian-xin and WANG Lei |
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| Affiliation: | National Engineering Laboratory for Audio Coding Technology,National Engineering Laboratory for Audio Coding Technology |
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| Abstract: | A layered audio coding algorithm which is compatible with DRA is presented in the paper. The surround layered coding is based on a channel-classified way, whereas the mono/stereo layered coding is subject to a framework in which the residual is encoded again as the enhanced layer. According to the analysis and testing results, a better audio quality can be provided by the DRA layered coding technology. Meantime, it is appropriate for Chinese digital audio broadcasting as a source coding by prefectly combining with channel coding and layered modulation technologies. |
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| Keywords: | DRA layered coding digital audio broadcasting |
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