Tyack P
J Acoust Soc Am. 1985 Nov;78(5):1892-5. doi: 10.1121/1.392777.
A small telemetry device, called a "vocalight," was designed for attachment to a dolphin's head using a suction cup. The vocalight lights up a variable number of light-emitting diodes depending upon the loudness of sounds received at a hydrophone within the suction cup. If vocalights matched for sensitivity are put on each dolphin within a captive group, observers can identify which dolphin produces a vocalization. Use of vocalights indicates that source levels of whistles from captive bottlenosed dolphins, Tursiops truncatus, range from approximately 125 to over 140 dB re: 1 microPa at 1 m.
一种名为“声控灯”的小型遥测设备被设计出来，用于通过吸盘附着在海豚头部。声控灯会根据吸盘内水听器接收到的声音响度点亮数量可变的发光二极管。如果为圈养群体中的每只海豚佩戴灵敏度匹配的声控灯，观察者就能识别出是哪只海豚发出了叫声。声控灯的使用表明，圈养宽吻海豚（瓶鼻海豚，Tursiops truncatus）发出的哨声声源级在1米处约为125至超过140分贝（参考值：1微帕）。
