Origin of the double- and multi-pulse structure of echolocation signals in Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientialis)

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	Origin of the double- and multi-pulse structure of echolocation signals in Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientialis)
	Li, SH ; Wang, KX ; Wang, D ; Akamatsu, T
刊名	JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
	2005-12-01
卷号	118 期号:6 页码:3934-3940
关键词	TURSIOPS-TRUNCATUS
ISSN号	0001-4966
通讯作者	Wang, D, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
中文摘要	The signals of dolphins and porpoises often exhibit a multi-pulse structure. Here, echolocation signal recordings were made from four geometrically distinct positions of seven Yangtze finless porpoises temporarily housed in a relatively small, enclosed area. Some clicks demonstrated double-pulse, and others multi-pulse, structure. The interpulse intervals between the first and second pulse of the double- and multi-pulse clicks were significantly different among data from the four different positions (p < 0.01, one-way ANOVA). These results indicate that the interpulse interval and structure of the double- and multi-pulse echolocation signals depend on the hydrophone geometry of the animal, and that the double- and multi-pulse structure of echolocation signals in Yangtze finless porpoise is not caused by the phonating porpoise itself, but by the multipath propagation of the signal. Time delays in the 180 degrees phase-shifted surface reflection pulse and the nonphase-shifted bottom reflection pulse of the multi-pulse structures, relative to the direct signal, can be used to calculate the distance to a phonating animal. (c) 2005 Acoustical Society of America.
英文摘要	The signals of dolphins and porpoises often exhibit a multi-pulse structure. Here, echolocation signal recordings were made from four geometrically distinct positions of seven Yangtze finless porpoises temporarily housed in a relatively small, enclosed area. Some clicks demonstrated double-pulse, and others multi-pulse, structure. The interpulse intervals between the first and second pulse of the double- and multi-pulse clicks were significantly different among data from the four different positions (p < 0.01, one-way ANOVA). These results indicate that the interpulse interval and structure of the double- and multi-pulse echolocation signals depend on the hydrophone geometry of the animal, and that the double- and multi-pulse structure of echolocation signals in Yangtze finless porpoise is not caused by the phonating porpoise itself, but by the multipath propagation of the signal. Time delays in the 180 degrees phase-shifted surface reflection pulse and the nonphase-shifted bottom reflection pulse of the multi-pulse structures, relative to the direct signal, can be used to calculate the distance to a phonating animal. (c) 2005 Acoustical Society of America.
学科主题	Acoustics
WOS标题词	Science & Technology ; Technology ; Life Sciences & Biomedicine
类目[WOS]	Acoustics ; Audiology & Speech-Language Pathology
研究领域[WOS]	Acoustics ; Audiology & Speech-Language Pathology
关键词[WOS]	TURSIOPS-TRUNCATUS
收录类别	SCI
语种	英语
WOS记录号	WOS:000234101000054
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/9070]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Fisheries Res Agcy, Natl Res Inst Fisheries Engn, Ibaraki 3140421, Japan
推荐引用方式 GB/T 7714	Li, SH,Wang, KX,Wang, D,et al. Origin of the double- and multi-pulse structure of echolocation signals in Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientialis)[J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,2005,118(6):3934-3940.
APA	Li, SH,Wang, KX,Wang, D,&Akamatsu, T.(2005).Origin of the double- and multi-pulse structure of echolocation signals in Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientialis).JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,118(6),3934-3940.
MLA	Li, SH,et al."Origin of the double- and multi-pulse structure of echolocation signals in Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientialis)".JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 118.6(2005):3934-3940.