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    • 3. 发明授权
    • Electrodynamic loudspeaker
    • 电动扬声器
    • US4426556A
    • 1984-01-17
    • US281167
    • 1981-07-07
    • Shuji SaikiKatuaki SatoKazue SatoSeiichi IshikawaHideaki InoueTsuneo Tanaka
    • Shuji SaikiKatuaki SatoKazue SatoSeiichi IshikawaHideaki InoueTsuneo Tanaka
    • H04R1/22H04R9/06H04R9/00
    • H04R1/225H04R9/063
    • An electrodynamic loudspeaker which comprises a generally rectangular flat vibrating plate, and first and second magnetic drives for driving the vibrating plate to produce vibrations. The first magnetic drive is so positioned as to drive the vibrating plate at a first location corresponding to one of two line nodes m.sub.1 and m.sub.2 of vibration of a first predetermined frequency f.sub.1 which would be produced when the vibrating plate is driven at the center thereof, whereas the second magnetic drive is so positioned as to drive the vibrating plate at a second location corresponding to one of four line nodes n.sub.1, n.sub.2, n.sub.3 and n.sub.4 of vibration of a second predetermined frequency f.sub.3 which would be produced when the vibrating plate is driven at the center thereof. Each of all of the line nodes extends in parallel to the shorter sides of the rectangular shape of the vibrating plate.
    • 一种电动扬声器,其包括大致矩形的平面振动板,以及用于驱动振动板以产生振动的第一和第二磁性驱动器。 第一磁驱动器被定位成在对应于当振动板在其中心被驱动时产生的第一预定频率f1的两个线节点m1和m2振动之一的第一位置处驱动振动板, 而第二磁驱动器被定位成在与驱动振动板时产生的第二预定频率f3的振动的四个线节点n1,n2,n3和n4中的一个对应的第二位置处驱动振动板 在其中心。 所有线节点中的每一个平行于振动板的矩形形状的较短边延伸。
    • 8. 发明授权
    • Speaker system with image projection screen
    • 带影像投影屏的扬声器系统
    • US5025474A
    • 1991-06-18
    • US249954
    • 1988-09-27
    • Tsuneo TanakaKazue SatoHiroyuki TakewaAkira KurozukaTadashi TamuraKatsuji HattoriSatoshi TakayamaKosaku MurataKatsuaki SatohMituhiko SerikawaYouichi KimuraShuichi Obata
    • Tsuneo TanakaKazue SatoHiroyuki TakewaAkira KurozukaTadashi TamuraKatsuji HattoriSatoshi TakayamaKosaku MurataKatsuaki SatohMituhiko SerikawaYouichi KimuraShuichi Obata
    • G03B21/56H04R1/02H04R7/04H04R9/06
    • H04R1/02G03B21/565H04R7/04H04R9/063
    • A speaker system has an acoustic diaphragm and an image projection screen provided on a surface of the diaphragm integrally therewith so as to enable the user to enjoy both realistic image on the screen and powerful sound reproduced through the diaphragm. The rear surface of the diaphragm is closed at a peripheral portion thereof while the central portion of the rear surface of the diaphragm is opened to the exterior, so that the speaker system can provide a high level of reproduced sound pressure in low-pitched region, while the thickness of the speaker is reduced remarkably. The diaphgram can be driven by a plurality of driving units so that the speaker system can operate only with an ordinary stereophonic amplifier. The diaphragm can be composed of a pair of diaphragm elements capable of vibrating independently of each other and the screen may be integrally and commonly attached to the surfaces of these diaphragm elements in such a manner as to allow the diaphragm elements to vibrate independently of each other, whereby the speaker system can operate in stereophonic mode. Any variation in the acoustic characteristic attributable to variation in the condition of installation is compensated for by a change in the ratio of the opened area of the rear surface of the diaphragm to the whole effective vibration area or by a selective provision of a sound absorbing member on the rear side of the cabinet.
    • 扬声器系统具有隔膜和与其一体地设置在隔膜表面上的图像投影屏幕,以使用户能够欣赏屏幕上的逼真图像和通过隔膜再现的强大声音。 隔膜的后表面在其周边部分封闭,同时隔膜的后表面的中心部分向外开放,从而扬声器系统可以在低音区域提供高水平的再现声压, 而扬声器的厚度显着降低。 可以通过多个驱动单元来驱动该图像,使得扬声器系统只能用普通的立体声放大器操作。 隔膜可以由能够彼此独立地振动的一对隔膜元件构成,并且屏幕可以一体地并且共同地附接到这些隔膜元件的表面,以允许隔膜元件彼此独立地振动 由此扬声器系统可以以立体声模式操作。 通过改变隔膜后表面的开口面积与整个有效振动面积之间的比例,或通过选择性地设置吸音构件来补偿由于安装条件的变化引起的声学特性的任何变化 在机柜的后侧。
    • 10. 发明授权
    • Electro-mechanical-acoustic transducing device
    • 机电声换能器
    • US06259935B1
    • 2001-07-10
    • US09102327
    • 1998-06-22
    • Shuji SaikiKazue SatoSawako UsukiMitsukazu Kuze
    • Shuji SaikiKazue SatoSawako UsukiMitsukazu Kuze
    • H04Q732
    • G08B6/00H04M19/04H04M19/047H04R3/04
    • An electro-mechanical-acoustic transducing device includes: an electro-mechanical-acoustic transducer which has at least one resonance frequency, for converting an input electric signal into only vibration, or into both vibration and sound; a signal supplying unit for supplying a signal in a frequency band which includes at least one of the resonance frequencies of the electro-mechanical-acoustic transducer as the input signal of the electro-mechanical-acoustic transducer; and a frequency detector for detecting a signal component having a frequency corresponding to the mechanical resonance frequency of the electro-mechanical-acoustic transducer in an electric signal which is output from the electro-mechanical-acoustic transducer, and outputting the signal component as a part of an input signal to the signal supplying unit.
    • 电 - 机 - 声转换装置包括:具有至少一个共振频率的电 - 机 - 声变换器,用于将输入电信号转换为仅振动或将振动和声音转换成振动; 信号提供单元,用于将包括电 - 机 - 声变换器的至少一个谐振频率的频带中的信号提供为电 - 机 - 声变换器的输入信号; 以及频率检测器,用于在从机电声换能器输出的电信号中检测具有与机电声换能器的机械共振频率相对应的频率的信号分量,并输出信号分量作为部分 输入信号到信号提供单元。