VOICE TRANSMISSION SYSTEM AND METHOD FOR HIGH AMBIENT NOISE CONDITIONS

摘要

An earpiece has a structural configuration effective to removably interlock its outer surface contiguously to the outer ear auricle of the earpiece wearer. A microphone substantially exclusively receives, from the air of the external auditory canal, outbound voice sounds caused by the reverse modulation of the tympanic membrane when the earpiece wearer speaks. An outbound audio circuit is electrically connected to the microphone which converts the outbound voice sounds to electrical voice signals. The outbound audio circuit amplifies the outbound electrical voice signals to a preselected fixed level output gain and removes noise from the voice signals. A specific feature of the unique noise cancellation system, a noise cancelling signal is produced from a noise sample and used to oppose any noise portion of the outbound voice sounds.