OTO-LARYNGEAL COMMUNICATION SYSTEM.

摘要

Voice transmitting system comprising: a microphone having a high impedance, means to hold the microphone in or adjacent an outer ear of a person so as substantially to enclose air between the microphone and the tympanic membrane of the ear, and a circuit for transmitting a signal produced or modulated by the microphone in response to sound waves, if any, which are transmitted via the persons oto-laryngeal system to the tympanic membrane and propagated in the enclosed air.