论文部分内容阅读
美帝利克公司目前正用激光全息照相技术检验高保真度扬声器的缺陷。由音频发生器供给扬声器一个纯音。当扬声器随着这一信号振动时,用透镜将激光束聚焦在扬声器的整个圆锥面上。同时使部
The company is currently using laser holography to test the fidelity of loudspeakers. Powered by the audio generator to a pure tone speaker. When the speaker vibrates with this signal, the lens is used to focus the laser beam on the entire conical surface of the speaker. At the same time make ministry