Byrne D, Murray N
Ear Hear. 1986 Apr;7(2):63-70. doi: 10.1097/00003446-198604000-00002.
This paper examines the predictability of the optimal frequency response characteristic of a hearing aid from the shape of the pure-tone audiogram. The main data were derived from two studies, using 14 and 16 sensorineurally hearing-impaired ears, representing a wide variety of audiometric configurations. Optimal (required) frequency response slopes were estimated from most comfortable loudness levels for speech bands after finding that such responses were superior to ones derived from other procedures. The low (0.4 or 0.5 to 1.25 kHz), high (1.25 to 3 kHz), and total (0.4 or 0.5 or 3 kHz) slopes of the optimal responses were analyzed relative to the corresponding audiogram slopes. A moderately strong relationship was found between audiogram slopes and required response slopes (correlations averaged almost 0.6) and different studies agreed substantially regarding the formula describing that relationship. We conclude that it is justifiable to select the frequency response of a hearing aid from the pure-tone audiogram and that an appropriate formula would be more effective than providing a standard frequency response for all clients.
本文从纯音听力图的形状来考察助听器最佳频率响应特性的可预测性。主要数据来自两项研究，分别使用了14只和16只感音神经性听力受损的耳朵，代表了各种各样的听力测定配置。在发现基于言语频段最舒适响度水平得出的频率响应优于其他方法得出的频率响应后，据此估计了最佳（所需）频率响应斜率。相对于相应的听力图斜率，分析了最佳响应的低频（0.4或0.5至1.25千赫）、高频（1.25至3千赫）和全频（0.4或0.5至3千赫）斜率。研究发现，听力图斜率与所需响应斜率之间存在适度较强的关系（相关性平均接近0.6），并且不同研究在描述该关系的公式方面基本一致。我们得出结论，根据纯音听力图选择助听器的频率响应是合理的，并且合适的公式比为所有客户提供标准频率响应更有效。
