| 摘要 |
A sonic wave generator (10) includes at least one pair of concave acoustic baffles (12, 14, 16) arranged in concavely facing relationship in mutual coaxial alignment. The facing acoustic baffles (18, 20, 22) of the pair (12, 14, 16) are spaced apart from each other by a predetermined distance so that an annular opening (30) is formed between the peripheral edges of the openings of the facing concave baffles (18, 20, 22). A driven diaphragm (32) is located at the closed end (26) of each audio baffle (18, 20, 22) opposite the open end (24) of the baffle (18, 20, 22). The driven diaphragms (32) located in the baffle pair (12, 14, 16) face toward each other in mutual coaxial alignment and in coaxial alignment with the acoustic baffles (18, 20, 22). Each concave baffle (18, 20, 22, 122, 222) of respective baffle pairs (12, 14, 16, 116, 216) may be generally cylindrical (122), hemispherical (222), or parabolic (18, 20, 22), for example. |
