Throat-Vibration-Type Microphone and Communication Hands-Free Device Containing Same

A hand-free communication device, comprising:

• a throat-vibration-type sensor for receiving audio signals from a user, said throat-vibration-type sensor comprising:
• a box body having an interior receiving cavity and an outer wall which defines a flat platform at an inner side of said outer wall, wherein said box body further comprises an audio output aperture, and at least one of function key;
• a ceramic sheet received within said receiving cavity of said box body and directly bonded to said platform, wherein said ceramic sheet is electrically connected to a positive electric wire;
• a copper sheet received within said receiving cavity of said box body and bonded beneath said ceramic plate, wherein said copper sheet is electrically connected with a negative electric wire;
• and
• an amplification circuit electrically connected with said positive electric wire and said negative electric wire to electrically connect with said ceramic sheet and said copper sheet respectively;
• a control circuit board arranged inside said box body to receive or transit audio signals, wherein said control circuit is adapted for wirelessly linking to an external communication device, wherein said control circuit is electrically connected to said audio output aperture and function keys, and said amplification circuit is arranged on said control circuit board;
• a sound amplification device electrically connect to said control circuit board for receiving audio signals from said control circuit board;
• and
• a battery unit received in said box body and electrically connected to said control circuit board.

A hand-free communication device, comprising:

• a control box having an interior cavity, an audio output aperture, and at least one function key;
• a control circuit board arranged inside said control box to receive or transit audio signals, wherein said control circuit board is arranged for wirelessly linking to an external communication device, wherein said control circuit board is electrically connected to said audio output aperture and said function key,
• a throat-vibration-type sensor comprising:
• a box body having an interior receiving cavity and an outer wall which defines a flat platform at an inner side of said outer wall;
• a ceramic sheet received within said receiving cavity of said box body and directly bonded to said platform, wherein said ceramic sheet is electrically connected to a positive electric wire;
• a copper sheet received within said receiving cavity of said box body and bonded beneath said ceramic plate, wherein said copper sheet is electrically connected with a negative electric wire;
• and
• an amplification circuit electrically connected with said positive electric wire and said negative electric wire to electrically connect with said ceramic sheet and said copper sheet respectively;
• a sound amplification device electrically connect to said control circuit board for receiving audio signals from said control circuit board;
• and
• a battery unit arranged in the interior of said box body and electrically connected to said control circuit board.