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    • 1. 发明授权
    • Speaker system
    • 扬声器系统
    • US09414151B2
    • 2016-08-09
    • US14687945
    • 2015-04-16
    • Panasonic Intellectual Property Management Co., Ltd.
    • Sawako KanoToshiyuki MatsumuraShuji Saiki
    • H04R1/28H04R3/04H04R3/08
    • H04R1/28H04R1/2811H04R1/2857H04R3/04H04R3/08H04R2201/029
    • A speaker system includes a speaker cabinet that has an opening, a first speaker including a first diaphragm, and at least one acoustic tube opened at both ends. When an amplitude of vibration of the first diaphragm vibrated by applying a correction AC signal together with the first AC signal to the first speaker is equalized to the amplitude of vibration of the second diaphragm, a sound pressure reproduced by vibration of the first diaphragm is equal to or lower than a sound pressure reproduced by vibration of the second diaphragm of the second speaker. This is accomplished by applying a third AC signal having a frequency equal to or higher than a minimum resonance frequency of the closed type cabinet determined by the internal volume of the closed type cabinet and the caliber of the second speaker is applied to the second speaker.
    • 扬声器系统包括具有开口的扬声器箱,包括第一隔膜的第一扬声器和在两端开口的至少一个声管。 当通过将校正AC信号与第一AC信号一起施加到第一扬声器而振动的振动幅度与第二振动膜的振动幅度相等时,由第一振动膜的振动再现的声压相等 达到或低于由第二扬声器的第二隔膜的振动再现的声压。 这是通过施加频率等于或高于由封闭式机柜的内部容积确定的封闭式机壳的最小谐振频率的第三AC信号,并且将第二扬声器的口径应用于第二扬声器来实现的。