Application of deconvolution to improve signal quality in processing of wild dolphin signals

Dolphins have a very powerful sonar system for finding food, communicating with each other and escaping from predators. Recently there has been an increasing research interest on dolphin sonar signals. For most wild dolphins, e.g., Chinese white dolphins (Sousa chinensis), the recorded sound signal...

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Bibliographic Details
Published inOCEANS 2016 - Shanghai pp. 1 - 4
Main Authors Yi Tao, Yixuan Xia, Zheguang Zou, Xiaomei Xu
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2016
Subjects
Channel estimation
Deconvolution
dolphin sonar signal
Dolphins
Time-domain analysis
underwater acoustic channel
Underwater acoustics
Wiener filters
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Summary:Dolphins have a very powerful sonar system for finding food, communicating with each other and escaping from predators. Recently there has been an increasing research interest on dolphin sonar signals. For most wild dolphins, e.g., Chinese white dolphins (Sousa chinensis), the recorded sound signal is a combination of the dolphin's bioacoustic signal and the effect of a multipath shallow-water acoustic channel. Herein, we propose a digital signal processing approach that uses deconvolution to process recorded wild dolphin signals. Using the acoustic channel impulse response estimated from dolphin clicks, the true whistle signals can be recovered through deconvolution. Our results show that this technique is effective for extracting true wild dolphin sonar signals and is helpful for signal characteristics analysis for wild dolphins.
DOI:10.1109/OCEANSAP.2016.7485464