| 摘要 |
PURPOSE: An ear-microphone integrated with a speaker and a microphone is provided to reduce howling by isolating the speaker and the microphone with an inner blocking wall made of a silicon or rubber. CONSTITUTION: A microphone(5) and a speaker(3) are inserted into an external auditory canal to effectively block noise from the outside. A main case(2) is designed in a soundproofing and sound-resonating structure and coupled to components including the microphone(5) and the speaker(3), thereby being inserted into the external auditory canal. An internal case comprises a resonance structure of the speaker(3), a soundproofing structure of the microphone(5), and a sound-resonating structure that prevents the variation of sound upon transmitting voice to the microphone(5). An inner blocking wall is made of a silicon or rubber to block howling because the microphone(5) and the speaker(3) are close to each other. A sound-resonating hole(8) is located on a concave portion of the external auditory canal.
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