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The microphone will say”I see”:Use the Infrared distance measurement to turn on and off.so as a result,there is no need to turn it on on purpose before singing and no need to check it if it can work.the only thing you need to do is just take it,and sing to it.it will understand you.
The singer will say”I see it”:
when the microphone open-ed,there will be a week light in red,so singer can be sure the microphone is working.so there is no
need to check it which will makes a lot of noise.so you can see whether it is working.
Zhejiang Sci-Tech University
Zhang/Cheng Guangbo/Wang Weijie/Kong Ling`en/Wang