摘要
为了实现以激光作为载体的声音辨识,提出了一种基于Nd∶YAG激光器的声音辨识测量方法。首先,通过实验验证了采用Nd∶YAG激光器的测量系统能够测量低反射率物体纸片的运动位移;其次,声音信号在通过空气向外传播时,会引起纸片的振动位移,经过滤波、放大处理,实现声音的还原。结果表明,基于Nd∶YAG激光器的激光回馈干涉测量系统通过测量纸片的振动位移,从而实现对测试人员的声音辨识。
In order to achieve voice recognition with laser as carrier,a measurement method of voice recognition based on Nd ∶ YAG laser is proposed. Firstly,the measuring system with Nd ∶ YAG laser can measure the vibration displacement of paper sheet with the low reflectivity,which is verified by experiment. Secondly,as the sound signal propagating through the air,the paper sheet will vibrate. After measuring the vibration displacement of the paper sheet,the sound could be restored by filtering and amplification processing. The result shows that laser feedback interference measurement system based on Nd ∶ YAG laser can measure the vibration displacement of paper sheet,thereby it can realize voice recognition.
出处
《激光与红外》
CAS
CSCD
北大核心
2016年第2期150-153,共4页
Laser & Infrared
基金
科技部国家重大仪器项目(No.2011YQ04013603)
南通大学研究生科技创新计划项目(No.YKC13012)资助
