期刊
INTERNATIONAL JOURNAL OF AUDIOLOGY
卷 52, 期 -, 页码 S29-S38出版社
TAYLOR & FRANCIS LTD
DOI: 10.3109/14992027.2013.765041
关键词
Hearing-aid prescription; children; speech intelligibility; SII; loudness; DSL v4.1; DSL m[i/o]; NAL-NL1; NAL-NL2
资金
- National Institute On Deafness and Other Communication Disorders [R01DC008080]
- HEARing CRC
- Cooperative Research Centres Program - an initiative of the Australian Government
- U.S.A. Department of Veterans Affairs Rehabilitation Research and Development Office
Objective: To examine the impact of prescription on predicted speech intelligibility and loudness for children. Design: A between-group comparison of speech intelligibility index (SII) and loudness, based on hearing aids fitted according to NAL-NL1, DSL v4.1, or DSL m[i/o] prescriptions. A within-group comparison of gains prescribed by DSL m[i/o] and NAL-NL2 for children in terms of SII and loudness. Study sample: Participants were 200 children, who were randomly assigned to first hearing-aid fitting with either NAL-NL1, DSL v4.1, or DSL m[i/o]. Audiometric data and hearing-aid data at 3 years of age were used. Results: On average, SII calculated on the basis of hearing-aid gains were higher for DSL than for NAL-NL1 at low input level, equivalent at medium input level, and higher for NAL-NL1 than DSL at high input level. Greater loudness was associated with DSL than with NAL-NL1, across a range of input levels. Comparing NAL-NL2 and DSL m[i/o] target gains revealed higher SII for the latter at low input level. SII was higher for NAL-NL2 than for DSL m[i/o] at medium-and high-input levels despite greater loudness for gains prescribed by DSL m[i/o] than by NAL-NL2. Conclusion: The choice of prescription has minimal effects on speech intelligibility predictions but marked effects on loudness predictions.
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