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    • 1. 发明申请
    • ACOUSTIC RESONATOR AND SOUND CHAMBER
    • 声学谐振器和声音室
    • US20110127107A1
    • 2011-06-02
    • US12955318
    • 2010-11-29
    • RENTO TANASEKeiichi Fukatsu
    • RENTO TANASEKeiichi Fukatsu
    • G10K11/172
    • F01N1/04F01N1/02F01N1/023F01N2310/10F01N2490/15F01N2490/155G10K11/04
    • An acoustic resonator adaptable to a sound chamber is designed to decrease a sound pressure while increasing a particle velocity of medium particles in a low frequency range without increasing the overall size thereof. The acoustic resonator is constituted of a pipe member having one opening end and a resistance member embracing a high resistance region and a low resistance region. The resistance member is inserted into the pipe member such that one end thereof matches the opening end of the pipe member whilst the other end thereof is disposed at a predetermined position inside a hollow cavity of the pipe member. The high resistance region embraces an antinode region of the particle velocity distribution with respect to a standing wave occurred in the hollow cavity at a resonance frequency, thus causing an acoustic phenomenon decreasing the resonance frequency compared to a single unit of the pipe member.
    • 适于声音室的声共振器被设计成降低声压同时在不增加其总体尺寸的同时增加中等粒子在低频范围内的粒子速度。 声谐振器由具有一个开口端的管构件和包含高电阻区域和低电阻区域的电阻构件构成。 阻力构件插入到管构件中,使得其一端与管构件的开口端相匹配,同时其另一端设置在管构件的中空腔内的预定位置处。 高电阻区域以谐振频率包围相对于中空腔中发生的驻波的粒子速度分布的波腹区域,从而与管构件的单个单元相比,引起声学现象降低谐振频率。