補聴器の電気音響特性と語音明瞭度成績
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概要
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The relation between electroacoustical characteristics and articulation scores of hearing aid was studied in respect with effectiveness of hearing aid. Five different types of hearing aids were classified in order of A, B, C, D and E in respect to their articulation scores of speech obtained by 40 persons of nerve deafness and 6 persons of mixed deafness. This order could be heardly found in the frequency-characteristic of out put and the harmonic distortion of the tested hearing aids. However, the results of transient distortion of the hearing aids was proved to be proportional to the order of the effectiveness of the hearing aids. Furthermore, compression amplification circuit added to the hearing aid was studied for the purpose of modifying effectiveness of the hearing aid and, its positive result could be obtained.
- 一般社団法人 日本耳鼻咽喉科学会の論文