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设计一个BirdNET分类器,用于在被动声学记录中检测强风,以支持野生动物监测
Danielle T Fradet1,2, Megan A Cimino3, Easton R White1
1Department of Biological Sciences, University of New Hampshire, Durham, New Hampshire 03824, USA.
The Journal of the Acoustical Society of America
|June 20, 2025
概括
这项研究使用BirdNET自动检测阿德丽企记录中的风噪声,改善生态研究的数据质量. 该方法有助于管理受天气影响的具有挑战性的生物声学数据,这对于气候变化影响评估至关重要.
科学领域:
- 生态生态学 生态生态学
- 生物声学是一种生物声学.
- 机器学习 机器学习
背景情况:
- 被动声学监测 (PAM) 对于生态研究至关重要,但容易受到风噪声的影响,这是由于气候变化而引起的日益关注.
- 阿德利企是南极的关键指标,适合PAM,但风噪阻碍了种群评估.
- 在生物声学数据中有效管理风噪对于可靠的生态监测至关重要.
研究的目的:
- 开发和评估一种方法,用于自动识别和减轻阿德利企生物声学记录中的风噪声.
- 适应BirdNET卷积神经网络以检测生态音频数据中的非目标声音 (风).
- 建立一个工作流程,用于创建,验证和应用自定义的BirdNET模型来清理生物声学数据.
主要方法:
- 自定义的BirdNET模型被训练成将风力条件 (低,中,高) 分类为目标类,以阿德丽企的发声作为背景噪音.
- 模型性能使用F-score,准确性,精度和回忆指标进行评估.
- 开发了一个六步工作流程,用于创建定制模型,绩效评估和值确定.
主要成果:
- 性能最好的BirdNET模型获得了0.43的整体F评分和0.53.3的准确性.
- 该模型在识别强风条件方面表现出很高的性能,精度为0.76和回忆率为0.94.
- 该研究提出了一个实用的工作流程,用于在生物声学数据集中自动检测不需要的声音.
结论:
- 使用定制的BirdNET模型自动检测风噪声显著简化了生物声学数据清理.
- 这种方法使研究人员能够有效地隔离受影响的记录,节省时间和资源.
- 开发的方法提高了PAM在生态研究中的可靠性,特别是在具有挑战性的南极环境中.
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