Level considerations for chimeric processing: Temporal envelope and fine structure contributions to speech intelligibility
Level considerations for chimeric processing: Temporal envelope and fine structure contributions to speech intelligibility
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DOI：
10.1121/1.4935079
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发表时间：
2015-11-01
影响因子：
2.4
通讯作者：
Entwistle, Jenine L.
中科院分区：
文献类型：
--
作者：
Fogerty, Daniel;Entwistle, Jenine L.
嵌合处理通过在声学时间包络（ENV）和时间精细结构（TFS）中添加噪声来评估它们各自的作用。声学分析表明，在ENV中添加噪声会导致ENV的噪声退化和整体信号衰减，而在TFS中添加噪声只会导致TFS的噪声退化。然后，使用改良的嵌合策略对年轻的正常听力成年人进行测试，以保持语言水平。结果部分证实了ENV在决定语音可理解性方面的主要作用，但在选择性ENV掩蔽过程中，TFS发挥了重要作用。(C) 2015年美国声学学会
Chimeric processing is used to assess the respective role of the acoustic temporal envelope (ENV) and the temporal fine structure (TFS) by adding noise to either component. An acoustic analysis demonstrates that adding noise to the ENV results in noise degradation of the ENV and overall signal attenuation, whereas adding noise to the TFS results in only noise degradation of the TFS. Young normal hearing adults were then tested using a modified chimeric strategy to maintain speech levels. Results partially confirm the primary role of the ENV in determining speech intelligibility but demonstrate significant TFS contributions during selective ENV masking. (C) 2015 Acoustical Society of America