PDF(Pubmed)
Abstract：
The use of in-situ audiometry for hearing aid fitting is appealing due to its reduced resource and equipment requirements compared to standard approaches employing conventional audiometry alongside real-ear measures. However, its validity has been a subject of debate, as previous studies noted differences between hearing thresholds measured using conventional and in-situ audiometry. The differences were particularly notable for open-fit hearing aids, attributed to low-frequency leakage caused by the vent. Here, in-situ audiometry was investigated for six receiver-in-canal hearing aids from different manufacturers through three experiments. In Experiment I, the hearing aid gain was measured to investigate whether corrections were implemented to the prescribed target gain. In Experiment II, the in-situ stimuli were recorded to investigate if corrections were directly incorporated to the delivered in-situ stimulus. Finally, in Experiment III, hearing thresholds using in-situ and conventional audiometry were measured with real patients wearing open-fit hearing aids. Results indicated that (1) the hearing aid gain remained unaffected when measured with in-situ or conventional audiometry for all open-fit measurements, (2) the in-situ stimuli were adjusted for up to 30 dB at frequencies below 1000 Hz for all open-fit hearing aids except one, which also recommends the use of closed domes for all in-situ measurements, and (3) the mean interparticipant threshold difference fell within 5 dB for frequencies between 250 and 6000 Hz. The results clearly indicated that modern measured in-situ thresholds align (within 5 dB) with conventional thresholds measured, indicating the potential of in-situ audiometry for remote hearing care.
摘要：
与采用常规测听法和实耳测量的标准方法相比，由于其减少了资源和设备需求，因此将原位测听法用于助听器配件具有吸引力。然而,它的有效性一直是争论的主题，正如以前的研究指出，使用常规测听法和原位测听法测量的听力阈值之间存在差异。对于开放式助听器，差异尤其显着，归因于由通风口引起的低频泄漏。这里,通过三个实验，对来自不同制造商的六个听管式助听器进行了原位测听。在实验I中,测量助听器增益,以调查是否对规定的目标增益实施校正.在实验二,记录原位刺激,以调查校正是否直接纳入递送的原位刺激.最后,在实验三,使用原位测听法和常规测听法的听力阈值是通过佩戴开放式助听器的真实患者进行测量的。结果表明，（1）助听器增益保持不受影响，当用原位或常规测听法测量所有的开放配合测量，（2）除了一个助听器外，所有开放式助听器在低于1000Hz的频率下将原位刺激调整为30dB，它还建议在所有现场测量中使用封闭的圆顶，（3）对于250至6000Hz之间的频率，参与者之间的平均阈值差异在5dB以内。结果清楚地表明，现代测量的原位阈值与常规测量的阈值一致（在5dB以内），表明原位测听用于远程听力护理的潜力。
