| 基于小波变换的声学回波消除系统 |
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| 引用本文： | 王心一,亓晓旭,郑杰.基于小波变换的声学回波消除系统[J].通信技术,2011,44(8):39-41. |
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| 作者姓名： | 王心一 亓晓旭 郑杰 |
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| 作者单位： | 国家专利局通信发明审查部,北京,100190 |
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| 摘 要： | 声学回波消除技术一直是语音通信领域的研究热点。在声学回波消除系统中,通过估计回波路径中的固定时延区域来提高自适应滤波算法的收敛速度。提出了一种基于小波变换的固定时延估计算法以及基于小波变换的声学回波消除系统,解决传统时延估计算法在声学回波消除系统中估计误差大、抗干扰能力弱的问题。测试结果表明,算法稳健性、有效性等指标明显优于传统时延估计算法,基于小波变换的声学回波消除系统具有良好的消回波性能。
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| 关 键 词： | 声学回波消除 时延估计 归一化互相关函数 小波变换 |
Acoustic Echo Cancellation System based on Wavelet Transform |
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| WANG Xin-yi,QI Xiao-xu,Zheng Jie.Acoustic Echo Cancellation System based on Wavelet Transform[J].Communications Technology,2011,44(8):39-41. |
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| Authors: | WANG Xin-yi QI Xiao-xu Zheng Jie |
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| Affiliation: | WANG Xin-yi,QI Xiao-xu,Zheng Jie(Communication Examination Department,State Intellectual Property Office of People's Republic of China,Beijing 100190,China) |
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| Abstract: | The technology of acoustic echo cancellation is always a significant problem in the technical field of voice communications.The convergence rate of the adaptive algorithm in an acoustic echo cancellation system is enhanced by estimation of a flat delay in an echo path.The flat delay estimation algorithm based on wavelet transform and the acoustic echo cancellation system via wavelet transform are proposed,thus to solve the robustness and accuracy problems of the conventional delay estimation algorithm in ac... |
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| Keywords: | acoustic echo cancellation delay estimation normalized cross-correlation wavelet transform |
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