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插入式耳机，具有隔噪声性能好并能改善贴耳式耳机带来的堵耳效应和耳间效应等不良影响，可作为一种新型的标准耳机在临床测听中应用。为确定对国际标准“插入式耳机纯音基准等效阈声压级”的等效采用程度制订我国相应的国家标准，对３０名耳科正常人采用ＥＲ－３Ａ插入式耳机的等效阈声压级进行了测试，并与制订ＩＳＯ３８９－２所依据的几个主要研究结果相比较，数据基本一致。表明ＩＳＯ３８９－２（１９９４Ｅ）所规定的标准对我国是适用的，可以等效采用ＩＳＯ３８９－２制订我国的国家标准。
Plug-in headphones, with good noise performance and can improve the ear blocking ear headphones and ear effects caused by the adverse effects, can be used as a new type of standard headphones in clinical audiometry applications. In order to determine the equivalent adoption level of the international standard “plug-in headphones pure tone reference equivalent sound pressure level” to develop our corresponding national standards, the equivalent sound pressure of ER-3A plug-in headphones for 30 normal subjects Level was tested and compared with several major findings on which ISO 389-2 was based, with the same data. It indicates that the standard stipulated in ISO389-2 (1994E) is applicable to our country and the equivalent national standard of our country can be formulated using ISO389-2.