| 摘要 |
PCT No. PCT/SE86/00571 Sec. 371 Date Jun. 23, 1988 Sec. 102(e) Date Jun. 23, 1988 PCT Filed Dec. 12, 1986 PCT Pub. No. WO87/03994 PCT Pub. Date Jul. 2, 1987.An omnidirectional sound emitter with separate sound sources (1, 2), each comprising a funnel-shaped horn (4), is characterized in that the sound sources (1, 2) are mutually arranged such that the acoustic main axes (6) of the horns (4) lie in essentially one and the same plane (7) and the sound-emitting open ends (8) of the horns are directed towards the central portion of the sound emitter and located at a distance (BS; BD) from one another. Slot-shaped openings (9) are so arranged between the open ends (8) of adjacent horns (4) that sound emitted by the horns is caused to pass in a direction from the sound emitter through the slot-shaped openings (9), thereby to be dispersed through 360 DEG in the said plane (7) such that the sound representation from the sound emitter corresponds to the sound representation from a line source perpendicular to said plane (7). |
