Deriving the Real-Ear SPL of Audiometric Data Using the “Coupler to Dial Difference” and the “Real Ear to Coupler Difference”
Deriving the Real-Ear SPL of Audiometric Data Using the “Coupler to Dial Difference” and the “Real Ear to Coupler Difference”
复制标题
使用“耦合器到拨号差异”和“真耳到耦合器差异”推导听力数据的真耳 SPL
作者：
Kevin J. Munro;J. Davis
目的比较测听计输出的实耳声压级（SPL）与通过增加耦合器对表盘差（CDD）和实耳对耦合器差（RECD）得到的实耳声压级（SPL）。设计采用探针管式麦克风测量16名正常听力受试者单耳的实耳声压级和声压差。CDD变换和RECD传递函数在HA1和HA2 2-cc耦合器中测量，使用EAR-LINK泡沫耳尖或定制耳模。使用EARTone ER 3A和Audioscan RE770插入式耳机测量RECD传递函数。结果该方法可靠，复验的平均误差小于1 dB。在任何受试者中，实测声压级与推导的实耳声压级之间的平均差值通常小于1 dB，很少超过3 dB。结论：在无法直接测量实耳声压级的情况下，可以使用单个听力计测量的CDD和单个耳朵测量的RECD来获得有效的实耳声压级估计。
Objective The purpose of the study was to compare the measured real-ear sound pressure level (SPL) of audiometer output with the derived real-ear SPL obtained by adding the coupler to dial difference (CDD) and real-ear to coupler difference (RECD) to the audiometer dial reading. Design The real-ear SPL and RECD were measured in one ear of 16 normally hearing subjects using a probe-tube microphone. The CDD transform and the RECD transfer function were measured in an HA1 and an HA2 2-cc coupler using an EAR-LINK foam ear-tip or a customized earmold. The RECD transfer function was measured using the EARTone ER 3A and the Audioscan RE770 insert earphone. Results The procedures were very reliable with mean differences on retest of less than 1 dB. The mean difference between the measured and derived real-ear SPL was generally less than 1 dB and rarely exceeded 3 dB in any subject. Conclusions The CDD measured for an individual audiometer and the RECD measured for an individual ear can be used to derive a valid estimate of real-ear SPL when it has not been possible to measure this directly.
探管麦克风用于听力受损儿童和成人的测量。
影响因子：
3.7
作者：
Barlow,NL;Auslander,MC;Rines,D;Stelmachowicz,PG
通讯作者：
Stelmachowicz,PG