Patent ID: 6671379
Filing Date: 2003-12-30
Classification: H04B,H04R

Abstract:
An earset, comprising:a housing positionable with respect to an ear of a person; a microphone disposed with respect to the housing for insertion into the ear of a person, the microphone operable to detect a change in air pressure within the ear while the person speaks and to produce an electrical microphone signal corresponding to the internally detected change in air pressure; a speaker disposed with respect to the housing and operable to produce a sound corresponding to an electrical speaker signal input to the speaker; and a circuit coupled to receive the microphone signal produced by the microphone and the electrical speaker signal is input to the speaker, and operable to produce a corrected microphone signal having a reduced feedback component of the microphone signal, the feedback component resulting from the detection by the microphone of the sound produced by the speaker wherein the circuit includes: an amplifier for amplifying the microphone signal produced by the microphone; an amplifier for amplifying the electrical speaker signal received by the circuit and outputting an electrical feedback indication signal; and a combining means for combining the amplified microphone signal and the feedback indication signal to produce the corrected microphone signal.