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首页> 外文学位 >The relationship between comfortable loudness range and behavioral auditory dynamic range in older listeners with and without sensorineural hearing loss.
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The relationship between comfortable loudness range and behavioral auditory dynamic range in older listeners with and without sensorineural hearing loss.

机译：有和没有感觉神经性听力损失的老年听众的舒适响度范围与行为听觉动态范围之间的关系。

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摘要

The behavioral auditory dynamic range has been termed as the range of sound pressure levels spanning approximately 100-120 dB that the auditory system can process from threshold of hearing to a level of discomfort. Researchers have linked this dynamic range to expectations for a range of comfortable listening, anticipating that the two should be related or similar.;The purpose of the present research was to evaluate the proposed relationship between comfortable loudness and dynamic range for speech stimuli, and to determine if these relationships differed by hearing sensitivity. It was expected that better understanding of these relationships would add to the current body of psychoacoustic research regarding loudness comfort. Additionally, the potential relationships between a lower limit of comfort, most comfortable loudness, an upper limit of comfort, speech detection threshold, and loudness discomfort level were evaluated. Participants included forty-nine adults, aged 60-87 years, grouped by hearing sensitivity (15 normal hearing and 34 mild to severe sensorineural hearing impairment).;Measured variables of speech detection threshold, a lower limit of comfort, most comfortable loudness, an upper limit of comfort, and loudness discomfort levels were obtained for each participant. Four calculated ranges were computed from these levels: 1) a lower comfortable loudness range, spanning from the lower limit of comfort to most comfortable loudness; 2) an upper comfortable loudness range, spanning from most comfortable loudness to an upper limit of comfort; 3) comfortable loudness range, spanning from a lower limit of comfort to an upper limit of comfort; and 4) dynamic range, spanning from speech detection threshold to loudness discomfort level.;Results of analyses revealed that all measured variables were significantly different from one another and that all measured variables, except loudness discomfort level, were significantly higher for listeners with sensorineural hearing loss. Loudness discomfort levels were similar for the hearing groups. Calculated ranges of an upper comfortable loudness range and of dynamic range revealed smaller ranges for hearing-impaired listeners than normal hearing listeners. While no significant differences were found for comfortable loudness range, listeners with hearing impairment did exhibit smaller ranges than normal hearing listeners. Positive relationships were found for comfortable loudness range and dynamic range across hearing groups and for each group, revealing that individuals with small comfortable loudness range have small dynamic ranges and individuals with large comfortable loudness range have large dynamic ranges. Further investigation of the positive relationship of comfortable loudness range and dynamic range revealed that comfortable loudness range was approximately half the size for listeners regardless of hearing sensitivity. Limitations and implications of these findings, along with impressions for future research are discussed.
机译：行为听觉动态范围已被称为声压级范围，其范围约为100-120 dB，听觉系统可将其从听觉阈值处理到不适水平。研究人员将此动态范围与对舒适听觉范围的期望相关联，并预期两者应该相关或相似。本研究的目的是评估语音响度的舒适响度与动态范围之间的拟议关系，并确定这些关系是否因听觉敏感性而有所不同。期望对这些关系的更好理解将增加有关响度舒适度的当前心理声学研究。另外，评估了舒适度的下限，最舒适的响度，舒适度的上限，语音检测阈值和响度不适水平之间的潜在关系。参加者包括四十九名年龄在60-87岁的成年人，按听力敏感性分组（15例正常听力和34例轻度至重度感音神经性听力障碍）。；语音检测阈值的测量变量，舒适度下限，最舒适的响度，获得了每个参与者的舒适度上限和响度不适水平。从这些级别计算出四个计算范围：1）较低的舒适响度范围，从舒适度的下限到最舒适的响度； 2）较高的舒适响度范围，范围从最舒适的响度到舒适的上限； 3）舒适度的响度范围，从舒适度的下限到舒适度的上限； 4）动态范围，从语音检测阈值到响度不适水平。；分析结果表明，所有感测神经元的听觉障碍者的所有测量变量之间均存在显着差异，除了响度不适水平之外，所有测量变量均显着较高失利。听力组的响度不适水平相似。较高的舒适响度范围和动态范围的计算范围显示，与正常听力的听众相比，听力受损的听众的范围较小。虽然舒适响度范围没有发现显着差异，但听力障碍的听众的听力范围确实比正常听众小。各个听力组和每个组的舒适响度范围和动态范围呈正相关，这表明舒适响度范围较小的人的动态范围较小，而舒适响度范围较大的人的动态范围较大。对舒适响度范围与动态范围的正关系的进一步研究表明，不管听力灵敏度如何，舒适响度范围约为听众大小的一半。讨论了这些发现的局限性和含义，以及对未来研究的印象。

著录项

  • 作者

    Dockens, Ashley LaShea.;

  • 作者单位

    University of South Alabama.;

  • 授予单位 University of South Alabama.;
  • 学科 Audiology.;Communication.;Gerontology.
  • 学位 Ph.D.
  • 年度 2015
  • 页码 135 p.
  • 总页数 135
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 药物化学;
  • 关键词

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