基于EMD的能量频谱分布信号检测方法用于海洋哺乳动物声调
Chai-Sheng Wen1, Chin-Feng Lin1, Shun-Hsyung Chang2
1Department of Electrical Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan.
Sensors (Basel, Switzerland)
|July 8, 2023
概括
这项研究引入了一种新的被动声学监测系统,使用经验模式分解和信息理论来检测海洋哺乳动物的声音. 集中能量频谱分布 (CESED) 探测器显著提高了识别这些声音的准确性.
科学领域:
- 海洋生物学 海洋生物学
- 声学 声学 在声学方面
- 信号处理 信号处理
背景情况:
- 被动声学监测对于海洋哺乳动物研究至关重要.
- 复杂的海洋环境对准确的发声检测提出了挑战.
- 现有的方法需要加强非静止信号分析.
研究的目的:
- 开发一种先进的被动声学监测系统,用于检测海洋哺乳动物的多样性.
- 为复杂的海洋声学环境适应信号处理技术.
- 提高海洋哺乳动物声音检测的准确性和效率.
主要方法:
- 利用经验模式分解用于非静止信号分析.
- 介绍了能源特征分析和信息理论.
- 开发了一种由五个步骤组成的检测算法:采样,能量分析,边际频率分布,特征提取和检测.
- 评估了四种信号特征提取算法:ERD,ESD,ESED和CESED.
主要成果:
- 集中能量频谱分布 (CESED) 探测器表现出卓越的性能.
- 对于蓝的发声,CESED实现了0.8979的曲线下面面积 (AUC) 和80.84%的准确性.
- 与ERD,ESD和ESED相比,CESED的精度,回忆和F1分数显著提高.
结论:
- 该CESED探测器非常有效,可以有效地检测海洋哺乳动物的声音.
- 开发的被动声学监测系统为海洋生物多样性评估提供了强大的解决方案.
- 这种方法提高了在具有挑战性的环境中研究海洋哺乳动物的能力.
更多相关视频
07:21Electroencephalographic Signal Acquisition Framework for Neurodiverse: A Case Study of Dolphin-Assisted Therapy
Published on: June 27, 2025
68
07:52Author Spotlight: Investigating Vocal Information Representation in Small Primates and Its Alteration by Psychiatric Disorders Using Noninvasive EEG
Published on: July 26, 2024
743
相关概念视频
01:20¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
1.1K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
1.1K
01:08IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations
1.1K
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
1.1K
01:17Energy and Power Signals
351
In an electrical system with a resistor, voltage and current signals facilitate the measurement of power and energy across the resistor. For a continuous-time signal, the total energy over a time interval is defined as the integral of the square of the signal's magnitude over that interval. Mathematically, this is expressed as:
351