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    • 31. 发明申请
    • BENDING WAVE PANEL LOUDSPEAKER
    • 弯曲波面板扬声器
    • WO2005067344A1
    • 2005-07-21
    • PCT/GB2005/000020
    • 2005-01-06
    • NEW TRANSDUCERS LIMITEDAZIMA, HenryHARRIS Neil, GeoffreyMORECROFT, DenisSTARNES, MarkCOLLOMS, MartinBURTON, Paul
    • AZIMA, HenryHARRIS Neil, GeoffreyMORECROFT, DenisSTARNES, MarkCOLLOMS, MartinBURTON, Paul
    • H04R7/04
    • H04R7/045H04R2440/01H04R2440/05H04R2499/15
    • From one aspect, the invention is a method of making a bending wave panel loudspeaker, comprising rigidly coupling a lever (12) to a panel edge or marginal portion such that the lever (12) extends at an angle to the plane of the panel (7), coupling a bending wave exciter to the lever (12) whereby bending wave energy is coupled to the panel (7) to produce an acoustic output when the exciter is fed with a signal and supporting the panel on a suspension positioned outboard of the lever. From another aspect the invention is a bending wave panel-form loudspeaker (13) having a lever (12) rigidly coupled to a marginal portion (16) or edge of the panel, a vibration exciter (9) coupled to the lever to apply bending wave energy to the panel (7) to produce an acoustic output and a panel suspension (17) positioned outboard of the lever. From a further aspect, the invention is a small electronic device, e.g. a mobile telephone (1) or PDA, having a display screen (10), and a transparent protective cover (7) over the display screen, wherein the transparent protective cover (7) is a loudspeaker as described above.
    • 从一个方面,本发明是一种制造弯曲波片扬声器的方法,包括将杆(12)刚性地连接到面板边缘或边缘部分,使得杆(12)以与面板的平面成一定角度延伸 7),将弯曲波激励器耦合到杠杆(12),由此当激励器馈送信号并将面板支撑在位于外部的悬架上的悬架上时,弯曲波能量耦合到面板(7)以产生声输出 杠杆。 从另一方面,本发明是一种弯曲波形面板式扬声器(13),其具有刚性地联接到面板的边缘部分(16)或边缘的杆(12),耦合到杠杆的振动激励器(9)以施加弯曲 将波浪能量提供给面板(7)以产生声输出和位于杠杆外侧的面板悬架(17)。 从另一方面,本发明是一种小型电子设备,例如, 具有显示屏(10)的移动电话(1)或PDA,以及在所述显示屏上的透明保护盖(7),其中所述透明保护罩(7)是如上所述的扬声器。
    • 33. 发明申请
    • ACOUSTIC DEVICE
    • 声学装置
    • WO2003026344A2
    • 2003-03-27
    • PCT/GB2002/003778
    • 2002-08-15
    • NEW TRANSDUCERS LIMITEDHARRIS, NeilAZIMA, Henry
    • HARRIS, NeilAZIMA, Henry
    • H04R
    • H04R29/001H04R7/045
    • A method of improving the modal resonance frequency distribution of a panel (2) for a distribution resonant mode bending wave acoustic device involves analysing the distribution of the modal resonance frequencies of the panel, identifying a modal resonance frequency that is non-uniformly spaced relative to adjacent modal resonance frequencies, identifying a location on said panel that exhibits anti-nodal behaviour at said modal resonance frequency and changing the local impedance to bending wave vibration at said location (6). The method has particular application to distributed mode loudspeakers (1).
    • 改善用于分布式谐振模式弯曲波声学装置的面板(2)的模态谐振频率分布的方法涉及分析面板的模态谐振频率的分布,识别模态谐振频率 其相对于相邻模态谐振频率不均匀间隔,识别所述面板上的在所述模态谐振频率下呈现抗节点行为并且在所述位置(6)处将局部阻抗改变为弯曲波振动的位置。 该方法特别适用于分布式扬声器(1)。