| 基于小波变换的两路自适应回声消除算法 |
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| 引用本文： | 李娜,陈盛云,陆晓明.基于小波变换的两路自适应回声消除算法[J].三峡大学学报(自然科学版),2010,32(2):84-88. |
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| 作者姓名： | 李娜 陈盛云 陆晓明 |
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| 作者单位： | 昆明理工大学,信息与自动化学院,昆明,650051 |
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| 摘 要： | 免提式语音通信系统在VoIP(Voice over Internet Protocol),手持移动终端和远程会议系统应用得非常广泛.但是,由于扬声器和麦克风之间的耦合而产生的声学回声,严重影响了语音的清晰度.常用的NLMS2算法在遇到相关性很强的两路语音信号时,收敛速率变得很慢,为改进此算法,基于小波变换和语音信号能量分布的特点,提出了一种新的两路自适应回声消除算法——WL-APN-LMS2.计算机仿真结果表明,该算法比传统的NLMS2、AP2算法收敛性能更好,计算复杂度较低,综合性能更优.
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| 关 键 词： | 两路回声消除 自适应算法 小波变换 |
Research on Two-Channel Acoustic Echo Cancellation Using Adaptive Filtering Algorithm Based on Wavelet Transform |
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| Li Na,Chen Shengyun,Lu Xiaoming.Research on Two-Channel Acoustic Echo Cancellation Using Adaptive Filtering Algorithm Based on Wavelet Transform[J].Journal of China Three Gorges University(Natural Sciences),2010,32(2):84-88. |
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| Authors: | Li Na Chen Shengyun Lu Xiaoming |
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| Institution: | Li Na Chen Shengyun Lu Xiaoming(School of Information , Automation,Kunming University of Science , Technology,Kunming 650051,China) |
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| Abstract: | Hands-free voice communication system has a wide range of applications to VoIP,handheld mobile terminals and remote conferencing systems.However,as the speakers and microphone caused acoustic echo because of the coupling,the clarity of voice gets a serious impact.The convergence rate of NLMS2 algorithm will get slow when the two-way voice signals are highly relevant;in order to improve this algorithm,we propose a new algorithm named WL-APNLMS2 based on wavelet transform and the energy distribution of speech... |
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| Keywords: | two-channel acoustic echo cancellation adaptive filtering algorithm wavelet transform |
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