| 用快速自适应和相关度检测算法的回声抵消器 |
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| 引用本文： | 黄本雄,王进军.用快速自适应和相关度检测算法的回声抵消器[J].华中科技大学学报(自然科学版),2004,32(6):4-6. |
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| 作者姓名： | 黄本雄 王进军 |
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| 作者单位： | 华中科技大学,电子与信息工程系,湖北,武汉,430074;华中科技大学,电子与信息工程系,湖北,武汉,430074 |
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| 基金项目： | 国家高技术研究发展计划资助项目 (2 0 0 2AA0 0 10 0 9) |
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| 摘 要： | 介绍了一种使用快速PNLMS自适应算法和快速相关度检测算法的新回声抵消器算法FPNLMS,快速PNLMS自适应算法通过快速判定自适应滤波器的更新步长方法，提高了自适应滤波器的收敛速度并减小计算复杂度；快速相关度检测算法能够在低信噪比的情况快速准确地判断出双端通话状态,测试表明，研制成功的回声抵消系统能较好地满足改善VoIP系统语音质量的要求。
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| 关 键 词： | 回声抵消器 回声抵消算法 比例归一化最小均方差 双端通话状态检测 |
| 文章编号： | 1671-4512(2004)06-0004-03 |
| 修稿时间： | 2003年11月3日 |
Echo canceller based on improved PNLMS and quick correlation DTD algorithms |
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| Huang Benxiong Wang JinjunHuang Benxiong Prof., Dept. of Electronics & Information Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan ,China..Echo canceller based on improved PNLMS and quick correlation DTD algorithms[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2004,32(6):4-6. |
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| Authors: | Huang Benxiong Wang JinjunHuang Benxiong Prof Dept of Electronics & Information Eng Huazhong Univ of Sci & Tech Wuhan China |
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| Institution: | Huang Benxiong Wang JinjunHuang Benxiong Prof., Dept. of Electronics & Information Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | An echo cancellation algorithm was introduced based on improved PNLMS and quick correlation Double-Talk Detector (DTD) algorithms. The improved PNLMS algorithm was a quick method to determine each proportionate step-size with faster convergence speed and lower complexity. The quick correlation DTD algorithm gave a new way to compute correlation based on LEAKY method, which can produce more extract detecting result in low SNR situation. |
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| Keywords: | echo canceller echo cancellation algorithm PNLMS Double-Talk Detector |
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