| 摘要 |
<p>Described herein is an underwater sound source which utilises an rgan pipe assembly (2) powered by a gas/fluid mixture (8). The pipe assembly (2) comprises a pipe (2a) which comprises first and second portions (2b, 2c) separated by a wall portion (2d). The gas/liquid mixture (8) is forced into the pipe (2) through inlet (6), and due to the pressure, is routed through a secondary inlet (12) formed in wall portion (2d) and into the second portion (2c) of the pipe assembly (2). By varying the ratio of gas to liquid in the gas/liquid mixture and/or the diameter of the gas bubbles in the gas/liquid mixture, the frequency of sound generated can be varied for a pipe having predetermined fixed dimensions.</p> |
