| 基于麦克风阵列的时延估计新方法 |
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| 引用本文： | 王波,王树勋,赵彦平.基于麦克风阵列的时延估计新方法[J].长春邮电学院学报,2008(3):223-229. |
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| 作者姓名： | 王波 王树勋 赵彦平 |
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| 作者单位： | 吉林大学通信工程学院,长春130025 |
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| 基金项目： | 教育部科学技术研究重点基金资助项目（7150080050） |
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| 摘 要： | 针对传统时延估计方法易受噪声和混响影响的问题,提出了一种基于麦克风阵列的时延估计新方法。该方法充分利用多个麦克风的空域信息和每个麦克风时域信息,以提高算法对环境噪声的抑制能力。该方法在抗噪声和抗混响性能方面都优于常用的PHAT-GCC（Phase Transform-Generalized Cross Correlation）方法。仿真实验表明,与MCCC（Multichannel Cross Correlation Coefficient）方法相比,在信噪比为20 dB,阵元个数为2～6个,混响时间在200～620 ms条件下,该方法的时延估计错误率明显降低。
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| 关 键 词： | 时延估计 麦克风阵列 广义互相关函数法 多通道 |
New Time-Delay Estimation Method Based on Microphone Array |
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| WANG Bo,WANG Shu-xun,ZHAO Yan-ping.New Time-Delay Estimation Method Based on Microphone Array[J].Journal of Changchun Post and Telecommunication Institute,2008(3):223-229. |
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| Authors: | WANG Bo WANG Shu-xun ZHAO Yan-ping |
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| Affiliation: | (College of Communication Engineering,Jilin University,Changchun 130025,China) |
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| Abstract: | In order to solve the problem that echo and noise affect the performance of traditional time-delay estimation approach,a new method is proposed by exploiting spatial-information of multiple microphones and time-domain information of each microphone adequately.The method has better performance than the PHAT-GCC（Phase Transform-Generalized Cross Correlation） method in suppressing echo and noise.Compared with the MCCC（Multichannel Cross Correlation Coefficient） method,the new method has evident advantage in suppressing echo.The simulation examples indicate when SNR（Signal-to-Noise Ratio） is 20 dB,the number of microphone is from 2 to 6 and the echo time is from 200 ms to 620 ms,the rates of the new time-delay estimation approach decline evidently. |
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| Keywords: | time-delay estimation microphone array generalized cross correlation（GCC） multi-channel |
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