预测使用宽带声学强度的儿童的宽带真实耳对接器差异
Ryan W McCreery1, Anastasia Grindle2, Gabrielle R Merchant3
1Audibility, Perception, and Cognition Laboratory, Boys Town National Research Hospital, Omaha, Nebraska 68131, USA.
The Journal of the Acoustical Society of America
|August 15, 2023
概括
准确的助听器适合儿童至关重要. 宽带声速度测量,与基于年龄的平均值不同,大大改善了耳道声学的预测,增强了儿科助听器配件.
科学领域:
- 听力学 听力学是指听力学.
- 声学 声学 在声学上
- 儿科听力学 儿科听力学
背景情况:
- 个别的耳道声学会导致助听器输出的变化,影响语音可听性.
- 准确测量儿科耳道声学是具有挑战性的,规范性的RECD转换可能导致适配错误.
- 声学阻抗测量为RECD提供了一个更容易获得的替代方案,用于表征听力阻抗.
研究的目的:
- 为了调查宽带声波不间断度测量是否可以提高宽带真耳对器差异 (wRECD) 的预测.
- 为了比较不同声势强度测量的预测精度与儿童的wRECD年龄平均值.
主要方法:
- 150名 (2至10岁) 带有完整的耳膜的儿童接受了wRECD和宽带声敏度测量.
- 开发了三种wRECD的预测模型:基于年龄的平均wRECD,226Hz音筒计入口和宽带吸收.
- 通过将模型预测与在3dB范围内测量的wRECD进行比较来评估预测准确度.
主要成果:
- 基于年龄的平均wRECD模型在62%的案例中达到3dB的准确度.
- 无论是226Hz输入和宽带吸收模型都预测wRECD在90%的情况下都在3dB以内.
- 个性化226Hz输入或宽带吸收度的测量显著改善了wRECD预测的准确性和精度.
结论:
- 宽带声速率测量,特别是226Hz的入口和宽带吸收率,与基于年龄的平均值相比,可以更准确地预测儿童的wRECD.
- 使用单个声速率数据可以提高儿科助听器配件转换的准确性和精度.
- 这些发现支持使用宽带声学不间断度来改善儿科助听器的适配,解决个体耳道变化.
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