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	The effect of speckles noise on the Laser Doppler Vibrometry for remote speech detection
	T.Lv; X.Y.Han; S.S.Wu; Y.Y.Li
刊名	Optics Communications
	2019
卷号	440页码:117-125
关键词	Laser Doppler Vibrometry,Speckles noise,Speech detection,fm demodulation,Optics
ISSN号	0030-4018
DOI	10.1016/j.optcom.2019.02.014
英文摘要	Speckles noise generated by the relative in-plane motion between the Laser Doppler Vibrometry (LDV) and the target damages the quality of the LDV-captured speech severely. As such, it is necessary to research on the effect of speckles noise on the LDV for remote voice detection and remove it. In this paper, we comprehensively discuss the statistical properties of dynamic speckles with the combination of theories and experiments, and the results show that the fluctuation of speckles intensity depends strongly on the relative velocity for a given value of the detection distance. Then, we investigate the effects of the speckles noise on the LDV for remote audio detection, and the results indicate that speckles noise can cause spikes and bursts appearing in the LDV-captured voice signals, which degrades the quality of the speech. To address this issue, an algorithm of the speckle noise reduction in the LDV-measured audio signals is proposed and the experimental results demonstrate that the proposed algorithm performs well.
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/63147]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	T.Lv,X.Y.Han,S.S.Wu,et al. The effect of speckles noise on the Laser Doppler Vibrometry for remote speech detection[J]. Optics Communications,2019,440:117-125.
APA	T.Lv,X.Y.Han,S.S.Wu,&Y.Y.Li.(2019).The effect of speckles noise on the Laser Doppler Vibrometry for remote speech detection.Optics Communications,440,117-125.
MLA	T.Lv,et al."The effect of speckles noise on the Laser Doppler Vibrometry for remote speech detection".Optics Communications 440(2019):117-125.

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