Speech perception in gated noise: The effects of temporal resolution
Speech perception in gated noise: The effects of temporal resolution
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DOI：
10.1121/1.2188688
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发表时间：
2006-05-01
影响因子：
2.4
通讯作者：
Nelson, Peggy B.
中科院分区：
文献类型：
--
作者：
Jin, Su-Hyun;Nelson, Peggy B.
以往的研究表明，听力受损（HI）的听众有减少掩蔽释放（MR）相比，正常听力的听众（NH），当他们听调制噪声。目前的研究探讨了以下问题还没有得到明确的回答：第一，当HI听众被放大，使他们的表现是平等的NH听众在安静和稳定的噪音，HI听众仍然表现出减少MR调制噪声相比，NH听众？第二，句子和CV音节的掩蔽释放是否相同？第三，前掩蔽是否对HI患者的表现有显著影响？为了补偿HI收听者降低的听力灵敏度，基于个体听力损失来调整语音和噪声的频谱水平。在稳态噪声和安静条件下，NH型和HI型听音者的听音成绩无显著性差异。然而，MR的句子和CV音节的量显着减少HI听众。对于句子识别，MR的量似乎与低到中频的听力灵敏度比前掩蔽更相关。相反，前掩蔽阈值似乎是一个主要的贡献者的量MR音节识别。(c)2006年，美国声学学会。
Previous investigations have suggested that hearing-impaired (HI) listeners have reduced masking release (MR) compared to normal hearing listeners (NH) when they listen in modulated noise. The current study examined the following questions that have not been clearly answered: First, when HI listeners are amplified so that their performance is equal to that of NH listeners in quiet and in steady noise, do HI listeners still show reduced MR with modulated noise when compared to NH listeners? Second, is the masking release the same for sentences and CV syllables? Third, does forward masking significantly contribute to the variability in performance among HI listeners'? To compensate for reduced hearing sensitivity for HI listeners, the spectrum levels of both speech and noise were adjusted based on the individual hearing loss. There wits no significant difference between the performance of NH listeners and that of HI listeners in steady noise and in quiet. However, the amount of MR for sentences and for CV syllables was significantly reduced for HI listeners. For sentence recognition, the amount of MR seemed to be more related to hearing sensitivity for low-to-mid frequencies than to forward masking. In contrast, forward masking thresholds appear to be a major contributor to the amount of MR for syllable recognition. (c) 2006 Acoustical Society of America.