Spectral Cue Use in Listeners with Poor Word Recognition

单词识别能力差的听众中的频谱提示使用

• 批准号: 6688245
• 负责人: SUSAN L PHILLIPS
• 金额: $ 6.45万
• 依托单位: UNIVERSITY OF NORTH CAROLINA GREENSBORO
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-01-13 至 2005-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6688245
• 关键词: Spectral; Cue; Use; Listeners; Poor

DESCRIPTION (provided by applicant): There is a subgroup of elderly hearing-impaired people who suffer exceptional communication deficits, in the form of poor speech perception, which are unaccounted for by the amount of heading loss. Audiologists lack an understanding of their specific perceptual difficulties and are unable to offer them adequate treatment. The aim of this project is to uncover specific deficits involved and determine the potential for auditory training with digital enhancement of spectral cues. Long-term goals are to improve speech perception for these individuals with amplification and rehabilitation strategies. It is hypothesized that these listeners will demonstrate poorer voiced consonant recognition, wherein the use of spectral cues are deficient, and that digital enhancement of the spectral cue will be necessary in the auditory training process. Experiment I will confirm that these listeners will have different voiced consonant confusions than those with good speech perception, and whether voice gender or vowel context is pertinent to these confusions. This will be accomplished with a closed-set identification task of the voiced /b/, /d/, /g/, /m/, /n/, /v/, /z/ in the contexts of /i/, /a/, and /u/ spoken by a male and a female, and presented at 95 dB SPL. Secondly, it will be determined which spectral cues are unutilized by the poor discriminators in the recognition of the /b/-/d/ and /m/-/n/ distinctions in a single-interval, two-alternative forced-choice identification procedure of CVs edited to include only isolated spectral cues. Lastly, the efficacy of psychoacoustic forced-choice training methods will be examined with a 12 dB digital enhancement of a particular spectral cue on the group of poor discriminators. Using forced-choice training measures and digital enhancement as part of auditory training with elderly listeners is innovative. The lack of success we have had as audiologists in improving the quality of life for these people is an important clinical problem that has not been hitherto addressed. The findings from the proposed research will provide specific information on the perceptual deficits experienced by this group of people. This is a necessary first step towards devising successful amplification and rehabilitation strategies in order to bring these people out of the isolation caused by the inability to communicate effectively. The outcomes of this project are expected to provide the background necessary to make a competitive R01 bid.

描述（由申请人提供）：有一个老年听力受损人群的亚组，他们患有特殊的沟通缺陷，表现为言语感知差，这是头部损失量所无法解释的。听力学家缺乏对他们具体的感知困难的理解，无法为他们提供适当的治疗。该项目的目的是揭示具体的赤字，并确定潜在的听觉训练与数字增强的频谱线索。长期目标是通过放大和康复策略改善这些人的言语感知。据推测，这些听众将表现出较差的浊音辅音识别，其中频谱线索的使用是有缺陷的，并且在听觉训练过程中，频谱线索的数字增强将是必要的。实验一将证实，这些听众将有不同的浊辅音混淆比那些良好的言语知觉，以及是否语音性别或元音上下文与这些混淆。这将通过在由男性和女性说出的/i/、/a/和/u/的上下文中的浊音/B/、/d/、/g/、/m/、/n/、/v/、/z/的闭集识别任务来完成，并且以95 dB SPL呈现。其次，将确定哪些光谱线索未被差鉴别器在单间隔、两个备选的CV的强迫选择识别过程中识别/B/-/d/和/m/-/n/区别时利用，所述CV被编辑为仅包括孤立的光谱线索。最后，心理声学强迫选择训练方法的有效性将与一个特定的频谱线索的12 dB的数字增强差的鉴别器组进行检查。使用强迫选择训练措施和数字增强作为老年听众听觉训练的一部分是创新的。作为听力学家，我们在改善这些人的生活质量方面缺乏成功，这是一个重要的临床问题，迄今尚未得到解决。拟议研究的结果将提供有关这组人所经历的感知缺陷的具体信息。这是制定成功的扩大和康复战略的必要的第一步，以便使这些人摆脱因无法有效沟通而造成的孤立。该项目的成果预计将提供必要的背景，使竞争R 01投标。