Research and Development of Cochlear Implant and Hearing Aid Evaluation for children with hearing-impairment, -Subjective and objective evaluation-

助听器的客观评价：放大语音的可听性，听力受损的人戴助听器能听到多大程度的放大语音？通过语音识别测试或助听器单词识别测试的结果，我们可以间接知道他或她放大后的语音可听性。本研究的目的是量化一个热障人士使用探针管麦克风放大语音的可听性。在这项研究中，我们使用了一种非线性助听器。本文报道了语音放大后的电平分布和动态范围的测量结果。助听器的主观评价：听力受损者对助听器的自我评价。制定了一份24项自我管理的问卷，量化助听器在日常生活中的表现。这些档案评估了在三种不同的听力情况下（嘈杂、混响和安静的环境）对言语放大的体验，以及对放大环境声音的反应。满意度也通过问卷进行评估。问卷调查对象为82名有经验的助听器使用者。结果显示，6%的受试者对助听器满意，41%的受试者不满意，其余53%为中等。不同满意度被试的自评绩效得分存在显著差异。不同听力环境下的自评成绩也存在显著差异。总的来说，受试者报告说，在安静的情况下和在听环境声音时，使用助听器的成功率明显高于在嘈杂和混响的情况下。本文讨论了模拟助听器在放大效果、与听力水平的关系、有效性和局限性方面的个体差异。

Objective Evaluation of Hearing aids : Audibility of Amplified Speech, How much can a hearing-impaired person hear amplified speech by wearing a hearing aid? From results of a speech discrimination test or a word identification test with a hearing aid, we can indirectly know his or her audibility of amplified speech. The purpose of this study is to quantify audibility of amplified speech for one heating-impaired person using a probe tube microphone. In the study we used a non-linear hearing aid. The results in which we measured level distribution and dynamic range of amplified speech are reported.Subjective Evaluation of Hearing Aids : Self-assessment of hearing aids by the hearing impaired, A 24-item self-administered questionnaire that quantifies performance with a hearing aid in everyday life was developed. The profiles assess experience with amplification of speech in three different listening situations (noisy, reverberant, and quiet environments) and in terms of reactions to amplified environmental sounds. Satisfaction was also assessed using the questionnaire. The questionnaire was administered to 82 experienced hearing aid users. Results revealed that 6% of the subjects were satisfied with their hearing aids, 41% of the subjects were dissatisfied and the remaining 53% were intermediate. There were significant differences between the self-assessment performance scores of subjects with different degree of satisfaction. Significant differences were also observed between the self-assessment performance scores for different listening environments. In general, subjects reported significantly more success with their hearing aids in quiet situation and in listening to environmental sounds than in noisy and reverberant situations. Individual differences with respect to amplifications effects, relationship to hearing level, effectiveness and limitation of analog personal hearing aids are discussed in the text.