数据采集与处理Issue(6)：1279-1285,7.DOI:10.16337/j.1004-9037.2015.06.017
一种改进的分数时延估计方法及应用
Improved Fractional Time Delay Estimation Method and Its Application
摘要
Abstract
Traditional fractional time delay estimation (TDE) algorithm is sensitive to ambient noise and reverberation noise ,and the algorithm performance is severely degraded in the complex environment .To improve the accuracy of time delay estimation ,a GCC‐maximum likelihood phase compensation (GCC‐MLP) phase compensation fractional time delay estimation approach is proposed based on generalized cross correlation(GCC) .The frequency domain weighting function is also improved for GCC algorithm . At the same time ,linear phase compensation is applied to the cross correlation spectrum in frequency do‐main and a continuous time delay estimator is obtained .Simulation comparition between the proposed al‐gorithm and the other fractional TDE algorithms demonstrates that the proposed algorithm outperforms the curve fitting algorithm and the sinc interpolation algorithm .Meanwhile the robustness to the noisy and the reverberant conditions is reinforced ,the time delay estimation error also decreases .Therefore , GCC‐MLP phase compensation fractional time delay estimation algorithm can be widely used in sound source direction of arrival estimation and sound source localization .关键词
广义互相关/分数时延估计/麦克风阵列/声源方向角估计/相位补偿Key words
generalized cross-correlation (GCC )/fractional time delay estimation/microphone array/sound source direction of arrival estimation/phase compensation分类
信息技术与安全科学引用本文复制引用
刘超,柏业超,张兴敢..一种改进的分数时延估计方法及应用[J].数据采集与处理,2015,(6):1279-1285,7.基金项目
江苏省产学研前瞻性联合研究（BY2012187）资助项目；毫米波国家重点实验室开放课题（K201514）资助项目。 （）
