Noise Reduction Air Tube Microphone, Noise Reduction Safety Earphones and Noise Reduction Safety Bluetooth Earphones

摘要

The present invention relates to a noise-reducing air duct microphone, a noise-reducing safety earphone, and a noise-reducing safety Bluetooth earphone. The acoustic signal and external acoustic wave signal are amplified, and then the acoustic wave signal is output to the small end of the acoustic wave concentrator, the small end of the acoustic wave concentrator is connected to the air conduit, and the other end of the air conduit is connected to the receiver. The sound wave signal of the air conduit is converted into a negative electrical signal, and the receiving device connects the negative electrical signal to a voice terminal or a communication device through a connector. Sound information is transmitted through air ducts, which are set relatively long so that people can use radiation sources to keep them away from electromagnetic devices. Long range noise reduction microphones can be used alone as part of a microphone, microphone, or headset structure. Used for phone calls, recordings, etc. to reduce noise and reduce radiation.