An alternate method for determining functional gain of hearing aids.
An alternate method for determining functional gain of hearing aids.
复制标题
确定助听器功能增益的替代方法。
DOI：
10.1044/jshr.2704.627
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
Gorga,MP
中科院分区：
文献类型：
--
作者：
Rines,D;Stelmachowicz,PG;Gorga,MP
助听器的功能增益通常是通过比较辅助和非辅助行为阈值来确定的。然而，使用这种方法，在听力灵敏度正常或接近正常的频率区域(即，在倾斜、上升或槽形听力图的情况下)，真实增益可能被低估。内部助听器噪声和/或放大的房间噪声对可获得的辅助阈值施加了下限。在这些情况下，比较辅助和非辅助的声反射阈值可能是确定真实耳朵增益的传统方法的一个有价值的临床替代方法。这项研究比较了不同测听配置的个体的功能增益的声场行为阈值和声反射阈值估计。声场行为阈值测量发现，如果无辅助阈值接近正常听力范围，则低估了功能增益。在听力损失较大的地区，行为和声反射对功能增益的估计是一致的。
The functional gain of a hearing aid typically is determined by comparing aided and unaided behavioral thresholds. With this method, however, true gain may be underestimated in frequency regions of normal or near-normal hearing sensitivity (i.e., in cases of sloping, rising, or trough-shaped audiograms). Internal hearing-aid noise and/or amplified room noise imposes a lower limit on obtainable aided thresholds. In these cases, comparing aided and unaided acoustic-reflex thresholds may be a valuable clinical alternative to traditional means of determining real-ear gain. This study compared sound-field behavioral threshold and acoustic-reflex threshold estimates of functional gain for individuals with a variety of audiometric configurations. The sound-field behavioral threshold measurements were found to underestimate functional gain if unaided thresholds approached the normal hearing range. In regions of greater hearing loss, behavioral and acoustic-reflex estimates of functional gain were in good agreement.