Reliability of sound attenuation in Florida scrub habitat and behavioral implications.
Reliability of sound attenuation in Florida scrub habitat and behavioral implications.
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DOI：
10.1121/1.1564817
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发表时间：
2003-05
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影响因子：
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通讯作者：
Brian S. Nelson
中科院分区：
文献类型：
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作者：
Brian S. Nelson
在不考虑声音频率的情况下进行测量时，自然栖息地中随距离的衰减通常很难预测。描述了佛罗里达灌木丛栖息地的物理-声学结构，并测量了衰减和衰减的可靠性作为声音频率的函数，在几个距离、扬声器高度和麦克风高度。讨论了佛罗里达灌木丛生境中声传播的空间背景，并提出了一个模型来描述单个因素对总体衰减的贡献。低于约3.5千赫的声音频率比较高的声音频率衰减更可靠，这表明动物在评估衰减或估计声压级时应最大限度地注意相对较低的声音频率。
Attenuation over distance in natural habitat is often difficult to predict when measured without respect to sound frequency. The physical-acoustic structure of Florida scrub habitat is described and both attenuation and reliability of attenuation are measured as a function of sound frequency, over several distances, speaker elevations, and microphone elevations. The spatial context of sound propagation in Florida scrub habitat is discussed and a model designed to describe contributions to overall attenuation from individual factors is presented. Sound frequencies below approximately 3.5 kHz attenuate more reliably than higher sound frequencies, suggesting that animals should pay greatest attention to relatively low sound frequencies when they assess attenuation or estimate sound-pressure level.