Noise reduction air tube microphone, noise-reduction safe headset and noise-reduction safe Bluetooth headset

A noise-reduction air tube microphone, comprising:

• an acoustic receiving device for receiving sound wave signals comprising:
• an acoustic wave concentrator having a big end for receiving sound wave signals and a small end for concentrating the sound wave signals,
• a sound signal capture unit made by a piece of diaphragm, and
• a cover with a multiple of through-holes provided on outside of the diaphragm to tightly fasten the diaphragm on the big end of the acoustic wave concentrator;
• a sound signal capture device for converting the sound wave signals to electronic signals comprising:
• an acoustic wave amplifier with a big end and a small end,
• a small microphone provided at a big end of the acoustic wave amplifier,
• an amplifier connected with the small microphone;
• a connecting device for connecting different devices:
• an air tube, one end of the air tube is connected with the small end of the acoustic wave concentrator and other end of the air tube is connected with the small end of the acoustic wave amplifier,
• a conductor, one end of the conductor is connected with the small microphone and other end of the conductor is connected with the amplifier, and
• a metal shield wire is connected with the amplifier;
• and
• the sound wave signals received by the big end of the acoustic wave concentrator, then concentrated by the small end of the acoustic wave concentrator, then passed through the air tube, then changed from acoustic wave signals to electronic signals by the microphone, then amplified by the amplifier, then amplified electronic signals are outputted through the metal shield wire.