期刊文献+

基于自适应频率选择的鲁棒时延估计算法 被引量:7

Robust time delay estimation algorithm based on adaptive frequency selection
在线阅读 下载PDF
导出
摘要 为了增强相位变换加权广义互相关方法(GCC-PHAT)这一常用时延估计方法对噪声的鲁棒性,提出了一种基于频率自适应选择的改进算法.该算法利用较短的语音数据(32ms)估计出每个频率的协方差矩阵,从而计算出每个频率的信噪比(SNR),然后自适应地选择SNR较大的频率用于时延估计.仿真实验结果表明,不论是在中等混响(混响时间T60=0.3s)还是在强混响(T60=0.6s)条件下,相对于GCC-PHAT方法,该算法对噪声的鲁棒性更强. The generalized cross correlation approach with phase transform weighting(GCC-PHAT) is a popular time delay estimation(TDE) algorithm.To enhance the robustness of the GCC-PHAT against noise,an improved TDE algorithm based on adaptive frequency selection is proposed.The signal-to-noise ratio(SNR) of each frequency is calculated from the covariance matrix estimated from the short segments(32ms) of speech,and then the frequencies with high SNR are adaptively selected to estimate the time delay.Simulation results show that the proposed method is more robust against noise compared to the traditional GCC-PHAT method under both medium(reverberation time T60=0.3s) and high reverberation(T60=0.6s) conditions.
出处 《东南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2010年第5期890-894,共5页 Journal of Southeast University:Natural Science Edition
基金 国家自然科学基金资助项目(60971098)
关键词 麦克风阵列 时延估计 GCC-PHAT算法 自适应频率选择 microphone array time delay estimation GCC-PHAT(generalized cross correlation approach with phase transform weighting) adaptive frequency selection
作者简介 万新旺(1972-),男,博士生; 吴镇扬(联系人),男,教授,博士生导师,zhenyang@seu.edu.cn.
  • 相关文献

参考文献11

  • 1Gillette M D,Silverman H F.A linear closed-form algorithm for source localization from time-differences of arrival[J].IEEE Signal Processing Letters,2008,15:1-4.
  • 2Brandstein M S.A frame work for speech source location using sensor arrays[D].Providence,RI,USA:Brown University,1995.
  • 3Chen J D,Benesty J,Huang Y T.Time delay estimation in room acoustic environments:an overview[J].EURASIP Journal on Applied Signal Processing,2006,2006:1-19.
  • 4崔玮玮,曹志刚,魏建强.声源定位中的时延估计技术[J].数据采集与处理,2007,22(1):90-99. 被引量:93
  • 5Knapp C,Carter G.The generalized correlation method for estimation of time delay[J].IEEE Transactions on Acoustics,Speech,and Signal Processing,1976,24(4):320-327.
  • 6Stephenne A,Champagne B.A new cepstral prefiltering technique for estimating time delay under reverberant conditions[J].Signal Processing,1997,59(3):253-266.
  • 7Benesty J.Adaptive eigenvalue decomposition algorithm for passive acoustic source localization[J].Journal of the Acoustical Society of America,2000,107(1):384-391.
  • 8Doclo S,Moonen M.Robust time-delay estimation in highly adverse acoustic environments[C]//IEEE Workshop on Applications of Signal Processing to Audio and Acoustics.New York,USA,2001:59-62.
  • 9张奕,殷福亮.混响和有色噪声环境下的顽健时延估计方法[J].通信学报,2008,29(5):6-12. 被引量:3
  • 10Chen J F,Ser W.Speech detection using microphone array[J].Electronics Letters,2000,36(2):181-182.

二级参考文献43

  • 1Omologo M,Svaizer P.Acoustic source location in noisy and reverberant environment using CSP analysis[C]// Proceedings of ICASSP.Atlanta,GA:IEEE,1996:921-924.
  • 2Ma X H,Liang L L,Yin F L.Generalized crosspower-spectrum phase method[C]//International Conference on Communications,Circuits and Systems.Chengdu,China:IEEE,2004,2:826-829.
  • 3Mahmoudi D.Speech source localization using a multi-resolution technique[C]// Proceedings of IEEE Workshop on Interactive Voice Technology for Telecommunications Applications.Torino,Italy:IEEE,1998:161-165.
  • 4Zurek P M.The precedence effect and its possible role in the avoidance of interaural ambiguities[J].Acoustical Society of America,1980,67:952-964.
  • 5Nishiura T,Nakamura S,Shikano K.Talker localization in a real acoustic environment based on DOA estimation and statistical sound source identification[C]//Proceedings of ICASSP.Orlando,Florida:IEEE,2002,1:893-896.
  • 6Nikias C L,Pan R.Time delay estimation in unknown Gaussian spatially correlated noise[J].IEEE Trans Acoust,Speech,Signal Processing,1988,36(11):1706-1714.
  • 7Chiang H H,Nikias C L.A new method for adaptive time-delay estimation for non-Gaussian signals[J].IEEE Trans Acoust Speech,Signal Processing,1990,38(2):209-219.
  • 8Allen J B,Berkely D A.Image method for efficiently simulating small room acoustics[J].Acoustical Society of America,1979,65(4):943-950.
  • 9Wang H,Chu P.Voice source localization for automatic camera pointing system in videoconferencing[C]// Proceedings of ICASSP.Munich,Germany:IEEE,1997,1:187-190.
  • 10Huang Y,Benesty J,Elko G W.Passive acoustic source localization for video camera steering[C]// Proceedings of ICASSP.Istanbul,Turkey:IEEE,2000,2:909-912.

共引文献94

同被引文献42

引证文献7

二级引证文献37

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部