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The higher, the closer, the better? Influence of sampling frequency and distance on the acoustic properties of short-beaked common dolphins burst pulses in the Mediterranean Sea

文献类型：期刊论文

作者Papale, Elena2,7; Alonge, Giuseppe6; Caruso, Francesco1,5,7; Grammauta, Rosario7; Mazzola, Salvatore7; Mussi, Barbara4; Pace, Daniela3; Buscaino, Giuseppa7
刊名AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
出版日期2019-10-22
页码10
关键词burst-pulses clicks sampling frequency short-beaked common dolphin spectral properties transmission loss
ISSN号1052-7613
DOI10.1002/aqc.3158
英文摘要When implementing conservation strategies involving passive acoustic monitoring, an accurate description of signal properties is crucial, especially when studying threatened and elusive vocalizing species. Misrepresentation of detected sounds can result in information loss or misclassification of species, thus compromising the management process. Distortion of the time-frequency features depends on the characteristics of acoustic propagation through sea water, sensitivity and sampling frequency of the acquisition system and distance between cetacean source and the receiving sensor (hydrophone). This study examined how the sampling frequency and the distance from the source affect the properties of burst pulsed sounds emitted by short-beaked common dolphins in the Mediterranean Sea and how the signal is modified in relation to the recording scenarios. Burst pulses were collected at 300 000 samples/s, and down-sampled at 192 000, 96 000, 48 000 and 44 100. Fifteen acoustic parameters were automatically measured. The median values were measured and compared among the signals sampled at different rates. Finally, a transmission loss model was applied to explore the variation of the power spectrum density during click propagation through seawater. The results showed that, even if higher sampling rates are a more accurate match with the original signal, some parameters (number of clicks, inter-click-interval and maximum peak) measured at 96 000 and 192 000 Hz did not display significant differences compared with 300 000 Hz, except for the frequency parameters. The transmission loss model also showed that the highest frequency components strongly attenuate within 800 m from the source. These results suggest that high recording distances and lower sampling rates do not allow an accurate analysis of burst pulsed signals. However, taking into account data storage limitations, recording at the highest frequency is not always required for an accurate description of signals and the outcomes of this study improve the accuracy of passive acoustic monitoring systems, thus enhancing the potential for conservation of short-beaked common dolphins.
WOS关键词ECHOLOCATION CLICKS ; TURSIOPS-TRUNCATUS ; OCEAN MEASUREMENTS ; VOCALIZATIONS ; WHALES ; SOUNDS ; COMMUNICATION ; WHISTLES ; BEHAVIOR ; SPINNER
资助项目OceanCare
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
语种英语
WOS记录号WOS:000491798400001
出版者WILEY
资助机构OceanCare
源URL[http://ir.idsse.ac.cn/handle/183446/7420]  
专题深海科学研究部_深海生物学研究室_海洋哺乳动物与海洋生物声学研究组
通讯作者Papale, Elena
作者单位1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Marine Mammal & Marine Bioacoust Lab, Sanya 572000, Peoples R China
2.Univ Torino, Dept Life Sci & Syst Biol, Turin, Italy
3.Sapienza Univ Rome, Dept Environm Biol, Rome, Italy
4.OceanomareDelphis Onlus, Rimini, Rn, Italy
5.Woods Hole Oceanog Inst, Biol Dept, Woods Hole, MA 02543 USA
6.SSPT PROTER OAC ENEA, Palermo, Italy
7.CNR, IAS Capo Granitola, BioacousticsLab, Via Mare 3, I-91021 Torretta Granitola, TP, Italy
推荐引用方式
GB/T 7714		 Papale, Elena,Alonge, Giuseppe,Caruso, Francesco,et al. The higher, the closer, the better? Influence of sampling frequency and distance on the acoustic properties of short-beaked common dolphins burst pulses in the Mediterranean Sea[J]. AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS,2019:10.
APA Papale, Elena.,Alonge, Giuseppe.,Caruso, Francesco.,Grammauta, Rosario.,Mazzola, Salvatore.,...&Buscaino, Giuseppa.(2019).The higher, the closer, the better? Influence of sampling frequency and distance on the acoustic properties of short-beaked common dolphins burst pulses in the Mediterranean Sea.AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS,10.
MLA Papale, Elena,et al."The higher, the closer, the better? Influence of sampling frequency and distance on the acoustic properties of short-beaked common dolphins burst pulses in the Mediterranean Sea".AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS (2019):10.

入库方式： OAI收割

来源：深海科学与工程研究所

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