[1]万新旺,吴镇扬.基于自适应频率选择的鲁棒时延估计算法[J].东南大学学报(自然科学版),2010,40(5):890-894.[doi:10.3969/j.issn.1001-0505.2010.05.002]
 Wan Xinwang,Wu Zhenyang.Robust time delay estimation algorithm based on adaptive frequency selection[J].Journal of Southeast University (Natural Science Edition),2010,40(5):890-894.[doi:10.3969/j.issn.1001-0505.2010.05.002]
点击复制

基于自适应频率选择的鲁棒时延估计算法()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第5期
页码:
890-894
栏目:
信息与通信工程
出版日期:
2010-09-20

文章信息/Info

Title:
Robust time delay estimation algorithm based on adaptive frequency selection
作者:
万新旺 吴镇扬
东南大学信息科学与工程学院,南京 210096
Author(s):
Wan Xinwang Wu Zhenyang
School of Information Science and Engineering, Southeast University, Nanjing 210096, China
关键词:
麦克风阵列 时延估计 GCC-PHAT算法 自适应频率选择
Keywords:
microphone array time delay estimation GCC-PHAT(generalized cross correlation approach with phase transform weighting) adaptive frequency selection
分类号:
TN912.3
DOI:
10.3969/j.issn.1001-0505.2010.05.002
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.
Abstract:
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.

参考文献/References:

[1] Gillette 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.
[2] Brandstein M S.A frame work for speech source location using sensor arrays [D].Providence,RI,USA:Brown University,1995.
[3] Chen 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.
  Cui Weiwei,Cao Zhigang,Wei Jianqiang.Time delay estimation techniques in source location [J].Journal of Data Acquisition & Processing,2007,22(1):90-99.(in Chinese)
[5] Knapp 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.
[6] Stephenne A,Champagne B.A new cepstral prefiltering technique for estimating time delay under reverberant conditions [J].Signal Processing,1997,59(3):253-266.
[7] Benesty J.Adaptive eigenvalue decomposition algorithm for passive acoustic source localization [J].Journal of the Acoustical Society of America,2000,107(1):384-391.
[8] Doclo 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.
  Zhang Yi,Yin Fuliang.Robust time-delay estimation in highly adverse acoustic environments [J].Journal on Communications,2008,29(5):6-12.(in Chinese)
[10] Chen J F,Ser W.Speech detection using microphone array [J].Electronics Letters,2000,36(2):181-182.
[11] Allen J B,Berkley D A.Image method for efficiently simulating small-room acoustics [J].Journal of the Acoustical Society of America,1979,65(4):943-950.

相似文献/References:

[1]蔡卫平,吴镇扬.一种基于离散时延的鲁棒声源三维定位方法[J].东南大学学报(自然科学版),2009,39(1):1.[doi:10.3969/j.issn.1001-0505.2009.01.001]
 Cai Weiping,Wu Zhenyang.Robust speech source 3D localization method based on discrete time delay[J].Journal of Southeast University (Natural Science Edition),2009,39(5):1.[doi:10.3969/j.issn.1001-0505.2009.01.001]
[2]黄毅,胡爱群,成月良,等.一种基于OFDM训练序列的精确时延估计方法[J].东南大学学报(自然科学版),2014,44(1):7.[doi:10.3969/j.issn.1001-0505.2014.01.002]
 Huang Yi,Hu Aiqun,Cheng Yueliang,et al.Accurate time delay estimation scheme based on training sequence in OFDM systems[J].Journal of Southeast University (Natural Science Edition),2014,44(5):7.[doi:10.3969/j.issn.1001-0505.2014.01.002]
[3]黄建人,周功禹.基于正棱锥阵的目标定位系统[J].东南大学学报(自然科学版),1995,25(5):124.[doi:10.3969/j.issn.1001-0505.1995.05.022]
 Huang Jianren,Zhou,Gongyu.A Regular Quadrihedron Receiving Sonar Array System for Source Location[J].Journal of Southeast University (Natural Science Edition),1995,25(5):124.[doi:10.3969/j.issn.1001-0505.1995.05.022]
[4]赵小燕,周琳,吴镇扬.基于压缩感知的麦克风阵列声源定位算法[J].东南大学学报(自然科学版),2015,45(2):203.[doi:10.3969/j.issn.1001-0505.2015.02.001]
 Zhao Xiaoyan,Zhou Lin,et al.Compressed sensing-based sound source localization algorithm for microphone array[J].Journal of Southeast University (Natural Science Edition),2015,45(5):203.[doi:10.3969/j.issn.1001-0505.2015.02.001]

备注/Memo

备注/Memo:
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.
基金项目: 国家自然科学基金资助项目(60971098).
引文格式: 万新旺,吴镇扬.基于自适应频率选择的鲁棒时延估计算法[J].东南大学学报:自然科学版,2010,40(5):890-894. [doi:10.3969/j.issn.1001-0505.2010.05.002]
更新日期/Last Update: 2010-09-20