Niezrecki Christopher, Phillips Richard, Meyer Michael, Beusse Diedrich O
Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611-6250, USA.
J Acoust Soc Am. 2003 Sep;114(3):1640-7. doi: 10.1121/1.1598196.
The West Indian manatee (trichechus manatus latirostris) has become endangered partly because of a growing number of collisions with boats. A system to warn boaters of the presence of manatees, that can signal to boaters that manatees are present in the immediate vicinity, could potentially reduce these boat collisions. In order to identify the presence of manatees, acoustic methods are employed. Within this paper, three different detection algorithms are used to detect the calls of the West Indian manatee. The detection systems are tested in the laboratory using simulated manatee vocalizations from an audio compact disk. The detection method that provides the best overall performance is able to correctly identify approximately 96% of the manatee vocalizations. However, the system also results in a false alarm rate of approximately 16%. The results of this work may ultimately lead to the development of a manatee warning system that can warn boaters of the presence of manatees.
西印度海牛（trichechus manatus latirostris）已濒临灭绝，部分原因是与船只碰撞的次数不断增加。一种能够向船主发出海牛存在信号，从而提醒船主海牛就在附近的系统，有可能减少此类船只碰撞事故。为了识别海牛的存在，人们采用了声学方法。在本文中，使用了三种不同的检测算法来检测西印度海牛的叫声。这些检测系统在实验室中使用音频光盘上模拟的海牛叫声进行测试。总体性能最佳的检测方法能够正确识别约96%的海牛叫声。然而，该系统的误报率约为16%。这项工作的结果最终可能会促成一种海牛预警系统的开发，该系统能够向船主发出海牛存在的警报。
