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Automatic detection of bioacoustics impulses based on kurtosis under weak signal to noise ratio

机译：弱信噪比下基于峰度的生物声学脉冲自动检测

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摘要

Passive acoustic monitoring (PAM) of marine mammal vocalizations has been efficiently used in a wide set of applications ranging from marine wildlife surveys to risk mitigation of military sonar emissions. The primary use of PAM is for detecting bioemissions, a good proportion of which are impulse sounds or clicks. A click detection algorithm based on kurtosis estimation is proposed as a general automatic click detector. The detector works under the assumption that click trains are embedded in stochastic but Gaussian noise. Under this assumption, kurtosis is used as a statistical test for detection. The algorithm explores acoustic sequences with the optimal frequency bandwidth for focusing on impulse sounds. The detector is successfully applied to field observations, and operates under weak signal to noise ratios and in presence of stochastic background noise. The algorithm adapts to varying click center frequency. Kurtosis appears as a promising approach to detect click trains, alone or in combination with other clicks detector, and to isolate individual clicks.
机译：海洋哺乳动物发声的无源声学监测（PAM）已被有效地用于广泛的应用中，从海洋野生动植物调查到降低军用声纳排放的风险。 PAM的主要用途是检测生物排放，其中很大一部分是脉冲声音或咔嗒声。提出了一种基于峰度估计的点击检测算法作为通用的自动点击检测器。该检测器的工作条件是，点击序列嵌入了随机但高斯的噪声中。在此假设下，峰度被用作检测的统计检验。该算法探索具有最佳频率带宽的声学序列，以专注于脉冲声音。该检测器已成功应用于野外观测，并在弱信噪比和随机背景噪声下运行。该算法适应于变化的点击中心频率。峰度似乎是一种有前途的方法，可以单独或与其他点击检测器结合使用来检测点击序列，并隔离单个点击。

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  • 来源
    《Applied Acoustics》 |2010年第11期|P.1020-1026|共7页
  • 作者

    C. Gervaise; rnA. Barazzutti; rnS. Busson; rnY. Simard; rnN. Roy;

  • 作者单位

    DTN, ENSIETA, 2 Rue Francois Verny, 29200, Brest, France;

    rnDTN, ENSIETA, 2 Rue Francois Verny, 29200, Brest, France Marine Science Institute, University of Quebec at Rimouski, 310 Allee des Ursulines, Rimouski, Quebec, Canada G5L-3A1;

    rnDTN, ENSIETA, 2 Rue Francois Verny, 29200, Brest, France;

    rnMarine Science Institute, University of Quebec at Rimouski, 310 Allee des Ursulines, Rimouski, Quebec, Canada G5L-3A1 Maurice Lamontagne Institute, Fisheries and Oceans Canada, 850 route de la Mer, Mom-Joli, Quebec, Canada G5H-3Z4;

    rnMaurice Lamontagne Institute, Fisheries and Oceans Canada, 850 route de la Mer, Mom-Joli, Quebec, Canada G5H-3Z4;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    passive acoustic monitoring (PAM); clicks detection; kurtosis; optimal bandwidth;

    机译：无源声学监控（PAM）;点击检测;峰度最佳带宽;

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