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    • 6. 发明授权
    • Horn loudspeaker and loudspeaker systems
    • 喇叭扬声器和扬声器系统
    • US06621909B1
    • 2003-09-16
    • US09199751
    • 1998-11-25
    • William WebbPaul DarlingtonOliver Wright
    • William WebbPaul DarlingtonOliver Wright
    • H04R2500
    • H04R1/345H04R1/30H04R1/403
    • A horn loudspeaker comprises: a horn (22) having a throat (26) and a mouth (30); a primary electro-acoustic driver (24) mounted at or adjacent the throat of the horn and directed generally along the horn; and at least one secondary electro-acoustic driver (32T, 32B, 32L, 32R) mounted part-way along the horn and directed generally across the horn. The secondary driver(s) can be used to change the local impedance conditions in the horn and therefore to change the polar response of the horn loudspeaker. At least one filter (12A, 12E) is provided for filtering an input signal (34) for the primary driver to produce a filtered signal for the primary driver or each of the secondary drivers. Such a filter may be chosen or designed so as to optimize some aspect of the polar response of the horn loudspeaker, for example to increase directivity, or flatten the polar response within a specified included radiation angle, or to increase omnidirectionality.
    • 喇叭扬声器包括:具有喉部(26)和嘴(30)的喇叭(22); 主电声驱动器(24),其安装在喇叭喉部处或邻近喇叭的喉部处,并且大致沿着喇叭被引导; 以及至少一个辅助电声驱动器(32T,32B,32L,32R),其沿着喇叭安装并且大体上穿过喇叭。 辅助驱动器可以用于改变喇叭中的局部阻抗条件,并因此改变喇叭扬声器的极性响应。 提供至少一个滤波器(12A,12E),用于过滤用于主驱动器的输入信号(34),以产生用于主驱动器或每个次驱动器的滤波信号。 可以选择或设计这种滤波器,以便优化喇叭扬声器的极性响应的某些方面,例如以增加方向性,或者在特定的包含的辐射角内平坦化极坐标响应,或增加全方位性。