Intercom throat bone vibrating earmicrophone

• Main Authors: GUIHAI QI, GUODONG NIU
• Format: Patent
• Language: English
• Published: 09.11.2005
• Edition: 7
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

The utility model relates to a larynx bone vibrating ear microphone for an interphone, which is the improvement on an ear microphone of an interphone. The utility model is characterized in that a vibrating receiving microphone is fixed with an omega-shaped neck clamp, the vibrating ear microphone has a circuit that one end of a piezoelectric sheet is connected with a base electrode of a triode 3G by a coupling resistor R1 and a coupling capacitor C1, and the other end of the piezoelectric sheet is connected with the outer end of a clamp resistor R4, a clamp resistor R3 and the clamp resistor R4 are respectively connected with the base electrode and an emitting electrode of the triode 3G; the outer ends of the clamp resistors R3, R4 are connected with output lines of a contact switch S1 in series after connected with a filter capacitorC2 and a filter resistor R5 in parallel. The utility model has the advantages that under the specific environment and particularly the environment that a person can not send out sound to the outside by the mouth, the purpose that the person send out sound to the outside by the vibration of a larynx bone can be reached, and the tonal quality can not be affected; moreover, the on-off of an interphone can be completed without a hand.