EAR MICROPHONE AND SPEAKER FOR TRANSEIVER USING RING IN THE EARS

摘要

A signal passway controller (T) switching the passway by transmission and reception signals is connected to an ear microphone/speaker (1) combined with the microphone and speaker functions. When transmitting the voice signal, the voice sounded at mounthis transfered to the eardrum through the auditory tube. The oscillated signal at the eardrum is input to the microphone/ speaker (1) to amplify and transmit. When receiving the signal, the microphone/speaker reproduces the sound so that the circuit makes both hands free when communicating by wireless apparatus.