| Detecting the Nonlinearity of Fish Acoustic Signals |
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| 作者姓名： | REN Xinmin YIN Li |
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| 作者单位： | [1]Information Science and Engineering College, Ocean University of China, Qingdao 266071, P. R. China [2]Institute of Acoustics, Chinese Academy of Scienees, Beijing 100080, P.R. China |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 1Introduction Ithasbeenknownforsometimethatmanyfishesproducesoundstocommunicatewitheachother,andfishsoundsoftendemonstratecomplexityandvariety.Differentfishspeciesproducetotallydifferenttypesofsounds.Furthermore,eventhesamespeciesprobablyproducesdifferent…
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| 关 键 词： | 鱼 声学信号 非线性 代理 |
| 收稿时间： | 2005-05-31 |
| 修稿时间： | 2006-06-05 |
Detecting the nonlinearity of fish acoustic signals |
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| REN Xinmin YIN Li.Detecting the Nonlinearity of Fish Acoustic Signals[J].Journal of Ocean University of China,2006,5(3):278-282. |
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| Authors: | Ren Xinmin Yin Li |
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| Institution: | 1. Information Science and Engineering College, Ocean University of China, Qingdao 266071, P.R.China
2. Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, P.R.China |
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| Abstract: | This paper discusses the nonlinearity of fish acoustic signals by using the surrogate data method. We compare the difference of three test statistics - time-irreversibility Trey, correlation dimension D2 and auto mutual information function I between the original data and the surrogate data. We come to the conclusion that there exists nonlinearity in the fish acoustic signals and there exist deterministic nonlinear components; therefore nonlinear dynamic theory can be used to analyze fish acoustic signals. |
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| Keywords: | fish acoustic signals nonlinearity surrogate data method null hypothesis test statistics |
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