背景噪声会增加语音混合中的信息掩蔽吗？
Can background noise increase the informational masking in a speech mixture?
机构信息
Department of Speech, Language and Hearing Sciences, Boston University, 635 Commonwealth Avenue, Boston, Massachusetts 02215,
出版信息
J Acoust Soc Am. 2020 Feb;147(2):EL144. doi: 10.1121/10.0000719.
Abstract
This study tested the hypothesis that adding noise to a speech mixture may cause both energetic masking by obscuring parts of the target message and informational masking by impeding the segregation of competing voices. The stimulus was the combination of two talkers-one target and one masker-presented either in quiet or in noise. Target intelligibility was measured in this mixture and for conditions in which the speech was "glimpsed" in order to quantify the energetic masking present. The results suggested that the addition of background noise exacerbated informational masking, primarily by increasing the sparseness of the speech.
摘要
本研究检验了一个假设，即在语音混合中加入噪声可能会导致能量掩蔽（通过模糊目标信息的部分内容）和信息掩蔽（通过阻碍竞争声音的分离）。刺激是两个说话者的组合 - 一个目标和一个掩蔽者 - 无论是在安静环境中还是在噪声中呈现。在这种混合环境中以及在“瞥见”语音的条件下测量目标可懂度，以量化存在的能量掩蔽。结果表明，背景噪声的加入加剧了信息掩蔽，主要是通过增加语音的稀疏度。
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