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arXiv 1503.07150cs.SD
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多个重叠相似源的声事件检测

Acoustic event detection for multiple overlapping similar sources

Queen Mary University of London(伦敦玛丽女王大学)

Dan Stowell, David Clayton

摘要:

许多当前的声学事件检测(AED)范例不适于自然声音的有机变化,和/或它们假设对同时源的数量的限制:通常只有一个源或每种类型的一个源可以是活动的。这些方面对于诸如鸟类种群监测的应用是非常不期望的。我们介绍了一个简单的方法建模的声音事件的起始,持续时间和偏移,以避免固有的限制复调或事件间的时间模式。我们评估的方法在案例研究中超过3000斑胸草雀调用。与基于HMM的方法相比,我们发现它在恢复声学事件时更准确,并且在估计呼叫率时更鲁棒。

英文摘要:

Many current paradigms for acoustic event detection (AED) are not adapted to the organic variability of natural sounds, and/or they assume a limit on the number of simultaneous sources: often only one source, or one source of each type, may be active. These aspects are highly undesirable for applications such as bird population monitoring. We introduce a simple method modelling the onsets, durations and offsets of acoustic events to avoid intrinsic limits on polyphony or on inter-event temporal patterns. We evaluate the method in a case study with over 3000 zebra finch calls. In comparison against a HMM-based method we find it more accurate at recovering acoustic events, and more robust for estimating calling rates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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