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Aided cortical response, speech intelligibility, consonant perception and functional performance of young children using conventional amplification or nonlinear frequency compression
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A Comparison of NAL and DSL Prescriptive Methods for Paediatric Hearing-Aid Fitting: Predicted Speech Intelligibility and Loudness
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In: ETSU Faculty Works (2013)
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Abstract:
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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Keyword:
Audiology and Speech-Language Pathology; children; DSL m[i/o]; DSL v4.1; hearing aid prescription; loudness; NAL-NL1; NAL-NL2; SII; Speech and Hearing Science; speech intelligibility; Speech Pathology and Audiology
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URL: https://dc.etsu.edu/cgi/viewcontent.cgi?article=2729&context=etsu-works
https://dc.etsu.edu/etsu-works/1703
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Impact of the presence of auditory neuropathy spectrum disorder (ANSD) on outcomes of children at three years of age
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A Randomized controlled trial of nonlinear frequency compression versus conventional processing in hearing aids : speech and language of children at three years of age
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Outcomes of early- and late-identified children at 3 years of age : findings from a prospective population-based study
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