Energetic Masking and Masking Release
Energetic Masking and Masking Release
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DOI：
10.1007/978-3-319-51662-2_3
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发表时间：
2017-01-01
期刊：
影响因子：
--
通讯作者：
Stone, Michael A.
中科院分区：
文献类型：
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作者：
Culling, John F.;Stone, Michael A.
掩蔽是鸡尾酒会问题的核心，因为干扰的声音可能足够强烈或众多，以掩盖听者正在关注的声音，使其话语无法理解。能量掩蔽的定义是有问题的，但它可以被认为是由干扰声音破坏听觉系统较低级别中语音信号处理的效应组成。掩蔽语可以通过压制听觉神经上的言语表征和模糊其幅度调制来影响言语可懂度。通过在这些较低水平上使用可以恢复语音的有用表示的机制来获得从能量掩蔽的释放。这些机制可以利用目标和掩蔽语音之间的差异，如谐波结构或耳间时间延迟。他们还可以利用掩蔽强度的短期下降或一只耳朵或另一只耳朵的语音与掩蔽比率的改善。
Masking is of central interest in the cocktail party problem, because interfering voices may be sufficiently intense or numerous to mask the voice to which the listener is attending, rendering its discourse unintelligible. The definition of energetic masking is problematic, but it may be considered to consist of effects by which an interfering sound disrupts the processing of the speech signal in the lower levels of the auditory system. Maskers can affect speech intelligibility by overwhelming its representation on the auditory nerve and by obscuring its amplitude modulations. A release from energetic masking is obtained by using mechanisms at these lower levels that can recover a useful representation of the speech. These mechanisms can exploit differences between the target and masking speech such as in harmonic structure or in interaural time delay. They can also exploit short-term dips in masker strength or improvements in speech-to-masker ratio at one or other ear.