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Acquisition and enhancement of remote voice based on laser coherent method
Lu, T.; H.-Y. Zhang; J. Guo and C.-H. Yan
2017
发表期刊Guangxue Jingmi Gongcheng/Optics and Precision Engineering
卷号25期号:3
摘要An all-fiber Laser Doppler Vibrometer (LDV) based on laser coherent method was investigated to acquire remote and high quality speech signals, combining with the Wiener speech enhancement technology. First, the heterodyne detection theory and the characteristic of fiber devices were introduced and the all-fiber LDV was established experimentally to detect the throat vibration, thus the remote voice was acquired. Whereas the direct acquisition of speech signals was prone to be disturbed by serious noise, the Wiener Filtering based on Minima Controlled Recursive Averaging (MCRA) was used to suppress the noise and improve the voice quality. The results indicate that the comprehensible speech signals within the range of 70 m can be obtained by the LDV. The speech enhancement technology can suppress the noise effectively and the Signal to Noise Ratio (SNR) was increased by 5 dB, thus the speech intelligibility was improved. This system has ability to acquire remote voice with high quality. 2017, Science Press. All right reserved.
收录类别ei
语种中文
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/59121
专题中科院长春光机所知识产出
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Lu, T.,H.-Y. Zhang,J. Guo and C.-H. Yan. Acquisition and enhancement of remote voice based on laser coherent method[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2017,25(3).
APA Lu, T.,H.-Y. Zhang,&J. Guo and C.-H. Yan.(2017).Acquisition and enhancement of remote voice based on laser coherent method.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,25(3).
MLA Lu, T.,et al."Acquisition and enhancement of remote voice based on laser coherent method".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 25.3(2017).
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