As soon as the microphone is plugged in, Kara OK will be in immediately entered, meanwhile, the symbol of microphone on the screen is light.
即时自动进入卡拉ok演唱状态，同时在显示屏点亮话筒标志。
2
The M1031-W also includes an integrated passive infrared sensor for motion detection, a white LED light, and two-way audio support with a built-in microphone and speaker.
A novel reflective fiber optic microphone was introduced. It USES a reflective fiber optic sensing probe to realize the outside modulation of sound to light.