公开(公告)号：US4633229A

公开(公告)日：1986-12-30

申请号：US397221

申请日：1982-07-12

申请人： Joel G. Iacono ,  Ronald J. Koval

发明人： Joel G. Iacono ,  Ronald J. Koval

IPC分类号： H04R5/00 ,  G10K11/02 ,  G08B3/00 ,  H05K5/00

CPC分类号： G10K11/025

摘要： Electronic outdoor warning siren systems which include a plurality of speakers arranged in one or more vertically spaced circular arrays of circumferentially spaced vertically oriented speakers to achieve substantially uniform coverage in all radial directions in a horizontal plane, and utilizing frequency variations in adjacent speakers in a given horizontal plane to minimize interference between sound signals from adjacent speakers thereby permitting closer spacing of speakers than would otherwise be feasible and providing uniform omni-directional sound propagation. The same frequency variations are also employed with a plurality of speakers oriented in the same direction and rotated through 360.degree. to accomplish the same result of minimal interference and more uniform sound propagation.

摘要翻译： 电子室外警报警报系统，其包括布置在一个或多个垂直间隔开的周向间隔开的垂直定向扬声器的圆形阵列中的多个扬声器，以在水平面中在所有径向方向上实现基本均匀的覆盖，并且利用给定的相邻扬声器中的频率变化 水平面，以使来自相邻扬声器的声音信号之间的干扰最小化，从而允许扬声器的距离比其他情况更为可行，并提供均匀的全向声音传播。 同样的频率变化也与多个扬声器相同方向并且旋转360度，以实现最小干扰和更均匀的声音传播的相同结果。