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    • 1. 发明公开
    • LOUDSPEAKER, APPARATUS COMPRISING THE SAME, AND METHOD OF OPERATING A LOUDSPEAKER
    • EP3355590A1
    • 2018-08-01
    • EP17153225.2
    • 2017-01-26
    • Vestel Elektronik Sanayi ve Ticaret A.S.
    • DERELI, UlasCERRAHOGLU, Dursun Sedat
    • H04R7/12H04R9/02
    • H04R9/046H04R1/24H04R3/14H04R7/12H04R2209/041H04R2307/207
    • The present invention provides a loudspeaker (10) at least comprising a field coil (4), a plurality of voice coils (6a, 6b, 6c) having different numbers of windings from each other, and a diaphragm (8) having a mechanically adjustable size. The invention also provides an apparatus at least comprising such a loudspeaker, as well as a variable voltage and/or current source (24) connected to the field coil (4), a voice coil drive circuit (26) switchably connectable to at least one of the plurality of voice coils (6a, 6b, 6c), and a mechanical actuator (28) connected to the diaphragm (8) for adjusting its size. The apparatus may further comprise a controller (30, 30a, 30b) of the variable voltage and/or current source (24), of the voice coil drive circuit (26) and of the mechanical actuator (28). Such a controller (30) is configured, in response to a frequency of an input electronic audio signal, to vary the voltage and/or current supplied to the field coil (4) by the variable voltage and/or current source (24) in order to vary the strength of a magnetic field produced by the field coil (4), to select at least one of the plurality of voice coils (6a, 6b, 6c) to be driven by the voice coil drive circuit (26), and/or to control the mechanical actuator (28) to adjust the size of the diaphragm (8). The invention also provides a method of operating a loudspeaker in such a manner. Thus the loudspeaker (10) is effectively an adaptive loudspeaker, which can become any one of a woofer, a mid-range speaker or a tweeter, according to how it is adjusted and controlled. This obviates the need to provide a separate woofer, mid-range speaker and tweeter to cover the whole range of normal human hearing.
    • 5. 发明公开
    • AUDIO DEMONSTRATION KIT
    • 音频演示套件
    • EP3047659A1
    • 2016-07-27
    • EP14780949.5
    • 2014-09-16
    • Bose Corporation
    • ZAMIR, Lee
    • H04R31/00H04R9/02
    • G09B1/325G09B1/32G09B1/38G09B5/02G09B25/00H04R9/02H04R9/041H04R9/046H04R31/00H04R2231/003H04R2307/021H04R2307/204H04R2400/11H04R2499/01
    • An audio demonstration kit encourages understanding of audio concepts by enabling children to construct and study speaker performance. In a particular embodiment, the audio demonstration kit includes a paper speaker and instructions. The paper speaker includes a backplate, a suspension, and a diaphragm cut from a single sheet of paper. The demonstration kit may feature an amplifier that is configurable to accommodate various hardware additions as a child is ready for more progressively challenging construction. For example, the amplifier of an embodiment allows single and dual mode operation, as well as drives a rotary motor and is coordinated with a strobe light. The amplifier of an embodiment is synchronized with the strobe light and a moveable platform to create the impression of that jiggling figures attached to the table are dancing. Interfaces with smart phone, recording, and other technologies further enhances and encourages the learning experience.
    • 音频演示套件鼓励孩子们通过构建和学习音箱性能来理解音频概念。 在特定实施例中,音频演示套件包括纸扬声器和说明书。 纸扬声器包括背板,悬架和从一张纸上切下的隔膜。 该演示套件可配备一个可配置的放大器,以适应不同的硬件添加,因为孩子已准备好迎接更具挑战性的构造。 例如,实施例的放大器允许单模和双模操作,以及驱动旋转马达并与闪光灯配合。 一个实施例的放大器与闪光灯和可移动平台同步,以产生附着在桌子上的摇摆人物正在跳舞的印象。 与智能手机,录音和其他技术的接口进一步增强和鼓励学习体验。
    • 8. 发明公开
    • LOUDSPEAKER COMPRISING A STIFFENING LAYER ON ITS DIAPHRAGM
    • LAUTSPRECHER MITVERSTÄRKUNGSSCHICHTAUF DER MEMBRAN
    • EP2950554A1
    • 2015-12-02
    • EP14184197.3
    • 2014-09-10
    • Cotron Corporation
    • Yang, Bill
    • H04R7/12H04R1/06H04R7/02
    • H04R9/046H04R1/06H04R7/02H04R7/122H04R7/125H04R7/26H04R9/06H04R2307/027H04R2307/201
    • A vibrating element including a diaphragm, a voice coil and a stiffening layer is provided. The diaphragm has a first surface and a second surface opposite to each other. The first surface includes a first conductive region and a second conductive region. The voice coil is disposed on the first surface. Two ends of the voice coil are electrically connected to the first conductive region and the second conductive region. The stiffening layer is disposed on the diaphragm. The diaphragm has a center region, which is enclosed and circled by the voice coil and includes an area of the diaphragm above the voice coil. The region outside the center region includes an inner circled zone and an outer circled zone surrounding the inner circled zone. At least one end of the voice coil is located in the inner circled zone and the stiffening layer covers the inner circled zone.
    • 提供了包括隔膜,音圈和加强层的振动元件。 隔膜具有彼此相对的第一表面和第二表面。 第一表面包括第一导电区域和第二导电区域。 音圈设置在第一表面上。 音圈的两端电连接到第一导电区域和第二导电区域。 加强层设置在隔膜上。 隔膜具有中心区域,该中心区域被音圈包围和圈出,并且包括在音圈上方的隔膜的区域。 中心区域外的区域包括内圈和围绕内圈区的外圈区。 音圈的至少一端位于内圈区域,加强层覆盖内圈区域。