在消声室和耳模拟器测试室中对方向性麦克风助听器特性测量的比较。

Comparison of measurements of the characteristics of directional microphone hearing aids in an IAC test room and an anechoic chamber.

作者信息

Brey R H, Caustin E I, McPherson J H

出版信息

J Am Audiol Soc. 1977 Mar-Apr;2(5):173-81.

Abstract

The purpose of this study was to assess the possibility of measuring directional microphone hearing aids (DMHAs) using standard hearing aid test instruments in a sound field environment. The use of DMHAs is increasing and research has shown that under certain difficult listening situations, superior results are obtained by hearing impaired individuals with directional versus omnidirectional microphone arrangements. However, valid electroacoustic evaluation of the DMHAs cannot be accomplished using the conventional hearing aid test box. The ideal environment for such evaluations is an anechoic chamber, a facility not found in most audiological clinics. Results show that if the proper precautions are observed, the electroacoustic characteristics of DMHAs can be measured in a sound field environment using conventional hearing aid test instrumentation. Validation of this procedure was carried out by comparing sound field results with those obtained in an anechoic chamber.

摘要

本研究的目的是评估在声场环境中使用标准助听器测试仪器测量方向性传声器助听器（DMHA）的可能性。DMHA的使用正在增加，并且研究表明，在某些困难的聆听情况下，有听力障碍的个体使用方向性传声器配置比全向性传声器配置能获得更好的效果。然而，使用传统的助听器测试箱无法对DMHA进行有效的电声评估。进行此类评估的理想环境是消声室，而大多数听力诊所都没有这样的设施。结果表明，如果采取适当的预防措施，DMHA的电声特性可以在声场环境中使用传统的助听器测试仪器进行测量。通过将声场结果与在消声室中获得的结果进行比较，对该程序进行了验证。