期刊
INTERNATIONAL JOURNAL OF AUDIOLOGY
卷 49, 期 -, 页码 S49-S63出版社
TAYLOR & FRANCIS LTD
DOI: 10.3109/14992020903148038
关键词
hearing aids; hearing loss; children; NAL; DSL; cross-over studies; double-blind methods; qualitative research; choice behavior; preference; noise; speech perception; loudness perception
资金
- Oticon Foundation
- Cooperative Research Centre for Cochlear Implant and Hearing Aid Innovation
This paper reports real world preferences of children in a double-blind, cross-over trial comparing NAL-NL1 and DSL v.4.1 prescriptions. Twenty-four children wore digital WDRC hearing aids at each site ( Australia, Canada). Multi-memory hearing aids provided the NAL and DSL programs in each of two memories. Diaries were completed during two counterbalanced trials, providing overall preference, situational preference, and preference comments. Ratings were reliable, and situational preferences factored into quiet/low level situations versus noisy/reverberant/high level situations. Children at both sites used DSL v4.1 for hearing low level speech, or when they wanted to hear loudly and clearly. Children used NAL-NL1 when they wished to hear sounds at a lower level, or to reduce background noise. Children expressed strong preferences for having the choice of both programs. Canadian children were more likely to prefer DSL than were the Australian children. Factors such as listening environment and prior listening experience are discussed in interpreting these findings.
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