通信学报Issue(1)：183-190,8.DOI:10.3969/j.issn.1000-436x.2014.01.021
复杂环境下基于时延估计的声源定位技术研究
Source localization based on time delay estimation in complex environment
摘要
Abstract
In order to improve the performance of source localization in noisy and reverberant environments, a novel time delay estimation (TDE) method was proposed. This method is called acoustical transfer function ratio based on statistical model (ATFR-SM). In the proposed algorithm, the noise reduction method based on the statistical model was adopted to reduce the effect of noise on acoustical transfer Function (ATF). In the ATF method, the power spectral density (PSD) was smoothed and whitened to reduce the effect of reverberations. voice activity detection (VAD) was used to distinguish the speech period from the noise period, and the TDE was performed in the speech period to improve the estimation ac-curacy. Moreover, the proposed TDE method and the linear closed-form method for source localization were combined to constitute a source localization system. The results of performance evaluation show that, in both the noisy and reverberant conditions, the lower percentage of abnormal points (PAP) and lower root mean square error (RMSE) can be achieved by the proposed TDE method than those of the reference methods. Meanwhile, the source localization has higher accuracy than the reference methods.关键词
时延估计/传递函数比/VAD/统计模型/声源定位Key words
TDE/ATF ratio/VAD/statistical model/source localization分类
信息技术与安全科学引用本文复制引用
张大威,鲍长春,夏丙寅..复杂环境下基于时延估计的声源定位技术研究[J].通信学报,2014,(1):183-190,8.基金项目
北京市教育委员会科技发展计划重点基金资助项目(KZ201110005005)；国家自然科学基金资助项目(61072089)@@@@The Natural Science Foundation Program and Scientific Research Key Program of Beijing Municipal Commis-sion of Education(KZ201110005005) （KZ201110005005）
The National Natural Science Foundation of China(61072089) （61072089）
