A super-wide-range microphone for extremely large sound pressure by use of optical total reflection.

一种利用玻璃与空气之间弯曲界面的光学全反射的新型传声器具有实际应用的可行性。这种麦克风可以测量极高的频率和很大的音量。通过将传感部分（玻璃）与二极管激光器和光电探测器相结合而制成的传声器头原型，检测200kHz， 140dB的正弦声波。通过缩小传感器的尺寸并将其连接到光纤的末端，可以实现光纤麦克风。提出了一种补偿周围条件波动影响的方法。

A novel microphone, which uses the optical total reflection on the curved interface between glass and air, is feasible for practical use. The microphone can measure an extremely high frequency and a great volume of sound. A sinusoidal sound wave (200kHz, 140dB) is detected by a prototype of the microphone head fabricated by unifying the sensing part (glass) with a diode laser and a photo detector. A fiber optic microphone can be realized by downsizing the sensor and attaching it to the end of the fiber. A compensation method for the effect of the fluctuation of surrounding conditions is proposed.