Long-term effects of non-linear frequency compression for children with moderate hearing loss
Long-term effects of non-linear frequency compression for children with moderate hearing loss
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DOI：
10.3109/14992027.2010.551788
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发表时间：
2011-06-01
影响因子：
2.7
通讯作者：
Hudson, Mary
中科院分区：
文献类型：
--
作者：
Wolfe, Jace;John, Andrew;Hudson, Mary
目的：评估非线性频率压缩（NLFC）作为改善中度至中重度听力损失儿童6个月适应期后语音识别的一种手段。设计：在受试者设计内，在测试条件下重复测量。研究样本：15名5至13岁的中度至中度重度高频感音神经性听力损失的儿童安装了Phonak Nios微型BTE助听器，并在使用和不使用NLFC的两个六周间隔后进行评估，并在连续使用NLFC六个月后再次进行评估。结果如下：使用重复测量分析，将6个月的结果与使用和不使用NLFC助听器的6周试验后收集的数据进行比较（Wolfe等人，出版中）。在初始研究中观察到的NLFC改善（Wolfe等人，出版中）在本研究中保持或显著增加。与六周的数据相比，在六个月的时间间隔内，安静条件下的辅助无意义音节语音识别阈值和噪音条件下的语音识别明显更好。结论：这些结果表明，NLFC改善了中度至中度重度听力损失儿童对高频语音的可听度和识别能力。在许多情况下，随着对该技术的适应时间的延长，NLFC的改进也会增加。
Objective: To evaluate non-linear frequency compression (NLFC) as a means to improve speech recognition for children with moderate to moderately-severe hearing loss following a six-month acclimatization period. Design: Within subject design with repeated measures across test conditions. Study Sample: Fifteen children, ages 5 to 13 years, with moderate to moderately-severe high-frequency sensorineural hearing loss were fitted with Phonak Nios, micro-sized, BTE hearing aids and evaluated after two six-week intervals with and without NLFC and again after a six-month period of consecutive NLFC use. Results: Using repeated measures analyses, the six-month results were compared to data that was collected following six-week trials with and without NLFC hearing aids (Wolfe et al, in press). Improvements seen with NLFC in the initial study (Wolfe et al, in press) were maintained or significantly increased in the present study. When compared to the six-week data, aided non-sense syllable speech recognition thresholds in quiet and speech recognition in noise were significantly better at the six-month interval. Conclusions: These results suggest that NLFC improves audibility for and recognition of high-frequency speech sounds for children with moderate to moderately-severe hearing loss. In many cases, improvements found with NLFC increased with a longer period of acclimatization to the technology.