Scollie S D, Seewald R C, Cornelisse L E, Jenstad L M
Hearing Health Care Research Unit, School of Communication Sciences and Disorders, University of Western Ontario, London, Canada.
Ear Hear. 1998 Oct;19(5):407-13. doi: 10.1097/00003446-199810000-00007.
The purpose of this study was to evaluate the reliability and validity of the real ear to coupler difference (RECD) and the real ear to dial difference (REDD) in predicting real ear SPL (RESPL).
The RESPL, RECD, and REDD were measured in the right ear of 24 normal-hearing subjects using probe microphone equipment and both insert and supra-aural earphones. The phones and probe tube were removed and replaced, and the RECD and REDD were remeasured.
RESPL was predicted using the RECD for insert earphone data and the REDD for supra-aural earphone data. Reliability estimates were calculated as the difference between test and retest values for the RECD and REDD. Validity estimates were calculated as the difference between measured and predicted RESPL. Results indicate that the RECD and REDD have equal and high reliability and validity in predicting RESPL.
It is concluded that the RECD and REDD may be used as level-independent HL to SPL transforms as a substitute for in situ audiometric procedures.
本研究的目的是评估真耳到耦合器差值(RECD)和真耳到刻度盘差值(REDD)在预测真耳声压级(RESPL)方面的可靠性和有效性。
使用探管传声器设备以及插入式和 supra - 耳式耳机,对 24 名听力正常受试者的右耳测量 RESPL、RECD 和 REDD。取下并更换耳机和探管,重新测量 RECD 和 REDD。
使用插入式耳机数据的 RECD 和 supra - 耳式耳机数据的 REDD 来预测 RESPL。可靠性估计值计算为 RECD 和 REDD 的测试值与复测值之间的差值。有效性估计值计算为测量的和预测的 RESPL 之间的差值。结果表明,RECD 和 REDD 在预测 RESPL 方面具有同等且较高的可靠性和有效性。
得出结论,RECD 和 REDD 可用作与声级无关的听力损失到声压级的转换,以替代现场测听程序。