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
Papale, Elena1,6; Alonge, Giuseppe2; Caruso, Francesco1,3,7; Grammauta, Rosario1; Mazzola, Salvatore1; Mussi, Barbara4; Pace, Daniela5; Buscaino, Giuseppa1
2019-10-22
Source PublicationAQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
ISSN1052-7613
Pages10
AbstractWhen 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.
Keywordburst-pulses clicks sampling frequency short-beaked common dolphin spectral properties transmission loss
DOI10.1002/aqc.3158
Indexed BySCI ; SCI
Funding OrganizationOceanCare
Language英语
Funding ProjectOceanCare
WOS KeywordECHOLOCATION CLICKS ; TURSIOPS-TRUNCATUS ; OCEAN MEASUREMENTS ; VOCALIZATIONS ; WHALES ; SOUNDS ; COMMUNICATION ; WHISTLES ; BEHAVIOR ; SPINNER
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
WOS SubjectEnvironmental Sciences ; Marine & Freshwater Biology ; Water Resources
WOS IDWOS:000491798400001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/7421
Collection深海科学研究部_海洋哺乳动物与海洋生物声学研究室
Corresponding AuthorPapale, Elena
Affiliation1.CNR, IAS Capo Granitola, BioacousticsLab, Via Mare 3, I-91021 Torretta Granitola, TP, Italy
2.SSPT PROTER OAC ENEA, Palermo, Italy
3.Woods Hole Oceanog Inst, Biol Dept, Woods Hole, MA 02543 USA
4.OceanomareDelphis Onlus, Rimini, Rn, Italy
5.Sapienza Univ Rome, Dept Environm Biol, Rome, Italy
6.Univ Torino, Dept Life Sci & Syst Biol, Turin, Italy
7.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Marine Mammal & Marine Bioacoust Lab, Sanya 572000, Peoples R China
Recommended Citation
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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Papale, Elena]'s Articles
[Alonge, Giuseppe]'s Articles
[Caruso, Francesco]'s Articles
Baidu academic
Similar articles in Baidu academic
[Papale, Elena]'s Articles
[Alonge, Giuseppe]'s Articles
[Caruso, Francesco]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Papale, Elena]'s Articles
[Alonge, Giuseppe]'s Articles
[Caruso, Francesco]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.