著者

片倉 光宏 吉田 登美男 岡本 途也

出版者

日本聴覚医学会

雑誌

AUDIOLOGY JAPAN (ISSN:03038106)

巻号頁・発行日

vol.12, no.1, pp.49-55, 1969 (Released:2010-04-30)

参考文献数

7

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In order to find out the most suitable sound quality and sound volume for the hard-of-hearing people with nerve impairment, we investigated the relation of frequency pattern and sound level to articulation score and comfortableness.The frequency pattern was one that compensated for a patient's individual hearing loss by “mirroring” his audicgram, and flat one.The results were as follows.1) The maximum syllable articulation scores were more than 60% for almost all subjects even if the hearing loss was at the range of 60-80dB.2) The “mirroring” was especially succesful for the subjects with the maximum articulation scores at the range of 40-80% (in the flat frequency pattern).3) For the subjects with hearing loss less than 40 dB, the most comfortable level was nearly equal to the sound level which gave the maximum articulation score. On the other hand, for the subjects with hearing loss more than 40dB, the sound level which gave the maximum articulation score was higher than the most comfortable level, occasionally it reached uncomfortable level (in the flat frequency pattern).4) The difference between the most comfortable level, uncomfortable level in binaural listening and those in monaural listening was about 6 to 7 dB.