Consonant reception in noise by listeners with mild and moderate sensorineural hearing impairment.
Consonant reception in noise by listeners with mild and moderate sensorineural hearing impairment.
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DOI：
10.1121/1.395145
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发表时间：
1987-11
期刊：
影响因子：
--
通讯作者：
P. Zurek;L. Delhorne
中科院分区：
文献类型：
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作者：
P. Zurek;L. Delhorne
本研究的目的是确定在何种程度上受损的听众在理解嘈杂的语音所经历的困难，可以解释的基础上提高音调检测阈值。21受损的耳朵15名受试者，跨越各种听力配置的平均听力损失为75分贝，进行了测试的接收辅音的语音频谱噪声。语音水平，噪声水平，和频率增益特性是不同的，以产生一系列的听力条件。受损的听众的结果进行了比较，正常听力的听众在相同的条件下测试，额外的噪音添加到近似受损的听众的检测阈值。还根据清晰度指数比较了受损听众和正常听众的结果。辅音识别受损的听众这个样本一般是可比的正常听力的听众在相同的条件下听类似的阈值偏移。当听力条件等同于清晰度指数时，辅音识别对平均听力损失没有明显的依赖性。假设正常人的阈值模拟的主要后果是听力损失（而不是阈上辨别或分辨率缺陷），得出的结论是，除了噪声本身之外，对于中度或轻度听力障碍的听众，在噪声中收听困难的主要来源是听力损失。
The goal of this study was to determine the extent to which the difficulty experienced by impaired listeners in understanding noisy speech can be explained on the basis of elevated tone-detection thresholds. Twenty-one impaired ears of 15 subjects, spanning a variety of audiometric configurations with average hearing losses to 75 dB, were tested for reception of consonants in a speech-spectrum noise. Speech level, noise level, and frequency-gain characteristic were varied to generate a range of listening conditions. Results for impaired listeners were compared to those of normal-hearing listeners tested under the same conditions with extra noise added to approximate the impaired listeners' detection thresholds. Results for impaired and normal listeners were also compared on the basis of articulation indices. Consonant recognition by this sample of impaired listeners was generally comparable to that of normal-hearing listeners with similar threshold shifts listening under the same conditions. When listening conditions were equated for articulation index, there was no clear dependence of consonant recognition on average hearing loss. Assuming that the primary consequence of the threshold simulation in normals is loss of audibility (as opposed to suprathreshold discrimination or resolution deficits), it is concluded that the primary source of difficulty in listening in noise for listeners with moderate or milder hearing impairments, aside from the noise itself, is the loss of audibility.