CAJ | 학술논문

在目标房间外一定距离，利用一束激光照射目标房间玻璃，反射回来的激光束被由于声压引起的玻璃振动信号调制。利用光电传感器接收反射回来的激光束并将其转化为电信号。利用电路对获取的信号进行滤波、放大处理，同时使用音频处理软件Adobe Audition滤波配合硬件滤波再次优化还原信号，从而实现对目标的监听。
재목표방간외일정거리，이용일속격광조사목표방간파리，반사회래적격광속피유우성압인기적파리진동신호조제。이용광전전감기접수반사회래적격광속병장기전화위전신호。이용전로대획취적신호진행려파、방대처리，동시사용음빈처리연건Adobe Audition려파배합경건려파재차우화환원신호，종이실현대목표적감은。
In a certain distance away from the target room, with the laser beam irradiate the glass of the target room. The reflected back laser beam will be modulated by vibration signal of the glass which caused by sound pressure. The information of the sound is obtained through the signal processing by hardware filter, and cooperated with Adobe Audition software filter to optimize the signal again meanwhile. Based on those, laser eavesdropping to sound source can be realized.