英国三所聋人学校的助听器使用现状。

The present state of hearing-aid use in three schools for the hearing impaired in Britain.

作者信息

Nakanishi Y

出版信息

Br J Audiol. 1981 May;15(2):107-11. doi: 10.3109/03005368109081423.

Abstract

The present state of hearing-aid use in three schools for the hearing impaired in Britain was investigated by comparing the hearing threshold measured with a hearing-aid earphone whose output sound pressure level was calibrated in a 2-cm3 coupler to the hearing-aid output with all the controls set to the position at which they were regularly used. The results showed that the amplification level of hearing aids was considerably less that that expected from hearing thresholds. It was only in the group with hearing thresholds less that 80 dB SPL that the hearing-aid outputs exceeded 20-30 dB SPL above their hearing thresholds. In the group with hearing loss more than 100 dB SPL, 40% of the ears were getting no functional amplification even at frequencies below 1000 Hz.

摘要

通过将用输出声压级在2立方厘米耦合器中校准的助听器耳机测量的听力阈值与将所有控件设置为常规使用位置时的助听器输出进行比较，对英国三所听力障碍学校的助听器使用现状进行了调查。结果表明，助听器的放大水平远低于根据听力阈值预期的水平。只有在听力阈值低于80 dB SPL的组中，助听器输出才超过其听力阈值20 - 30 dB SPL。在听力损失超过100 dB SPL的组中，即使在1000 Hz以下的频率，40%的耳朵也没有获得有效的放大。