Nielsen K O, Nielsen S S, Nielsen H B
Scand Audiol. 1986;15(2):105-8. doi: 10.3109/01050398609045960.
A comparison between a body-worn hearing aid with a conventional earphone/earmould system, and a free-field dynamic headphone demonstrated the significance of the coupling between the hearing aid earphone and the subject's ear. Measurement of the insertion gain revealed destruction of the ear-canal resonance with a conventional earmould, whereas the ear-canal resonance was preserved by the use of a dynamic headphone. The use of a body-worn hearing aid connected to a dynamic headphone showed a greater amplification at low as well as at high frequencies. Furthermore, a significantly better discrimination score and an improved sound quality were demonstrated with the dynamic headphone.
将佩戴式助听器与传统耳机/耳模系统以及自由场动态耳机进行比较，结果表明助听器耳机与受试者耳朵之间耦合的重要性。插入增益的测量结果显示，使用传统耳模会破坏耳道共振，而使用动态耳机则能保留耳道共振。连接动态耳机的佩戴式助听器在低频和高频时都能提供更大的放大效果。此外，使用动态耳机时，辨别分数明显更高，音质也有所改善。
