Perception of Envelope-Enhanced Speech in the Presence of Noise by Individuals with Auditory Neuropathy
Perception of Envelope-Enhanced Speech in the Presence of Noise by Individuals with Auditory Neuropathy
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DOI：
10.1097/aud.0b013e3181926545
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发表时间：
2009-02-01
期刊：
影响因子：
3.7
通讯作者：
Vanaja, C. S.
中科院分区：
文献类型：
--
作者：
Narne, Vijaya Kumar;Vanaja, C. S.
目的：研究背景噪声对听神经病（AN）患者感知未加工和加工增强语音的影响。设计：在安静和三种信噪比下，评估开放集语音识别能力结果：噪声环境下言语识别能力较安静环境下受影响更大。参与者被分为两组，好的表演者和差的表演者，根据他们的言语识别分数在安静。据观察，在噪声中的平均语音识别分数的减少是较低的好性能相比，性能差。信号的包络增强提高了两组的语音识别分数。结果的分析还表明，良好的表现者在所有条件下表现出显着的改善，而表现不佳的表现仅在安静和+10 dB的信号噪声ratio.Conclusions：对于个人与AN，听在背景噪声是更困难的比在安静的条件。语音信号的包络增强提高了AN患者在安静和背景噪声中的语音识别分数。然而，所获得的益处根据安静时的语音识别能力而变化。
Objective: To investigate the effect of background noise on perception of unprocessed and envelope-enhanced speech in individuals with auditory neuropathy (AN).Design: Open-set speech identification abilities were assessed for unprocessed and envelope-enhanced speech in quiet and at three signal to noise ratios (10, 5, and 0 dB signal to noise ratio) in 15 individuals with AN.Results: Results revealed that speech identification ability was affected more in the presence of noise than in quiet. The participants were classified into two groups, Good Performers and Poor Performers, based on their speech identification scores in quiet. It was observed that the reduction in mean speech identification scores in noise was less for Good Performers when compared with that of Poor Performers. Envelope enhancement of the signal improved speech identification scores in both the groups. The analysis of results also showed that Good Performers showed a significant improvement in all the conditions, whereas Poor Performers showed improvement only in quiet and +10 dB signal to noise ratio.Conclusions: For individuals with AN, listening in background noise is more difficult than in quiet condition. Envelope enhancement of speech signal improves speech identification scores in quiet and in background noise for individuals with AN. However, the benefit obtained varies depending on the speech identification ability in quiet.