专利名称：Microphone device in use in for
communication apparatus for motorcycle
发明人：Shigehira Nakamura,Shigenori Takeda申请号：US07/828179申请日：19920130公开号：US05263093A公开日：19931116
摘要：In a close talking microphone device in use for a communication apparatus for amotorcycle, a front casing 2 and a back casing 3 are provided with a front opening 7 and aback opening respectively. Elastic supporting members 5, 6 and 15 for a microphone 4are accommodated through a first and second filters 11 and 12 between the front casing2 and the back casing 3 and formed thereon with first, second and third through holes 13,14 and 16 connected to each other. The microphone 4 is engaged within the thirdthrough hole to form a pair of sound paths at each front and back side of the
microphone 4. The front sound path is smaller in volume than the back sound path andthe opening size of the through hole 13 is defined narrower than that of the throughhole 14, whereby a sideward noise diverges into two courses \"a\" and \"b\" and thediverging noises reaching the microphone are cancelled by each other so as to bedampened.
申请人：KABUSHIKI KAISHA HONDA ACCESS
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