| 基于PAOLA的丢包补偿算法 |
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| 引用本文： | 黄华华,邱小军.基于PAOLA的丢包补偿算法[J].电声技术,2007,31(4):53-55,58. |
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| 作者姓名： | 黄华华 邱小军 |
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| 作者单位： | 近代声学重点实验室,南京大学,声学研究所,江苏,南京,210093 |
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| 基金项目： | 国家自然科学基金
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高等学校博士学科点专项科研项目 |
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| 摘 要： | VoIP的语音质量受到丢包、延时、时延抖动等因素影响。为提高语音质量,需要进行丢包补偿处理,如采用WSOLA算法。首先介绍了WSOLA算法的原理,然后提出了用PAOLA对其进行优化的方法,最后对恢复语音质量进行了比较。
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| 关 键 词： | 丢包补偿 时域尺度修改 WSOLA PAOLA |
| 文章编号： | 1002-8684（2007）04-0053-03 |
| 修稿时间： | 2006-12-15 |
A New Packet Loss Concealment Method Based on PAOLA |
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| HUANG Hua-hua,QIU Xiao-jun.A New Packet Loss Concealment Method Based on PAOLA[J].Audio Engineering,2007,31(4):53-55,58. |
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| Authors: | HUANG Hua-hua QIU Xiao-jun |
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| Affiliation: | Key Laboratory of Modem Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China |
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| Abstract: | The quality of VoIP is affected by the packet loss, time delay, jitter and other factors. To improve its quality, the packet loss concealment such as WSOLA(Waveform Similarity Overlap-Add) can be used. A new technique based on PAOLA(Peak Alignment Overlap-Add) is proposed to optimize WSOLA, and the quality of the retrieval speech is compared. |
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| Keywords: | packet loss concealment time-scale modification WSOLA PAOLA |
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