Laser Doppler vibrometer for real-time speech-signal acquirement

被引：0
|
作者：
尚建华 [1 ]
贺岩 [1 ]
刘丹 [1 ]
臧华国 [1 ]
陈卫标 [1 ]
机构：
[1] Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences
来源：
ChineseOpticsLetters | 2009年 / 7卷 / 08期
关键词：
LDV; time; Laser Doppler vibrometer for real-time speech-signal acquirement; real; SNR;
D O I：
暂无
中图分类号：
TN912.3 [语音信号处理]; TH744.5 [];
学科分类号：
0711 ; 0803 ;
摘要：
Laser Doppler vibrometer (LDV) has a potential application prospect in remote sensing.Based on the correlation theories of heterodyne detection,a LDV system with a configuration of all fiber and heterodyne techniques is developed to detect the sound signal through the vibration of glass.Experimental results show that the LDV system has an ability to acquire the real-time speech signal 25 m away through glass.While,the system signal-to-noise ratio (SNR) value decreases with the increase of the glass thickness and the detection distance.
引用
收藏
页码：732 / 733
页数：2
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