Interference robust DOA estimation of human speech by exploiting historical information and temporal correlation

	Interference robust DOA estimation of human speech by exploiting historical information and temporal correlation
	Xue, Wei; Liang, Shan; Liu, Wenju
	2013
会议名称	the Annual Conference of the International Speech Communication Association, INTERSPEECH
会议录名称	Annual Conference of the International Speech Communication Association (INTERSPEECH)
页码	2895-2899
会议日期	2013
会议地点	Lyon, France
摘要	Although various DOA estimation methods for human speech have been presented, most of them assume noises received by different microphones are undirected. However, strong directional interferences often also exist in practical scenarios and the performances of existing methods degrade seriously in such case. In this paper, we present a new interference robust DOA estimation method for human speech. Historical information and temporal correlation are taken advantage to deal with the problem. Firstly, utilizing the historical DOA estimates, we perform “post-beamforming” in the last frame to suppress the directional interferences. Then exploiting temporal correlation of speech spectra, frequency weights which highlight the effects of speech frequency bins are calculated based on the estimated a priori SNR of enhanced signal. Finally, we propose a new DOA cost function using frequency-weighted spatial correlation matrix to estimate the DOA of speech source. Experimental results show that the proposed method outperforms existing algorithms in reverberant environments with additive white Gaussian noises in the presence of different kinds of interferences.
关键词	Direction Of Arrival Estimation Microphone Array Signal Processing Directional Noise
收录类别	EI
语种	英语
文献类型	会议论文
条目标识符	http://ir.ia.ac.cn/handle/173211/4314
专题	多模态人工智能系统全国重点实验室_机器人视觉
作者单位	National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences
第一作者单位	模式识别国家重点实验室
推荐引用方式 GB/T 7714	Xue, Wei,Liang, Shan,Liu, Wenju. Interference robust DOA estimation of human speech by exploiting historical information and temporal correlation[C],2013:2895-2899.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Xue_Interspeech2013.（247KB）	会议论文		开放获取	CC BY-NC-SA	浏览下载