Israelsson B, Sandh A, Leijon A
Department of Audiology, Sahlgrenska University Hospital, Göteborg, Sweden.
Scand Audiol. 1995;24(4):257-64. doi: 10.3109/01050399509047546.
Hearing aids were re-evaluated for 18 persons aged 11-16 years. Since these aids were fitted mainly using an informal test of aided loudness discomfort, the saturation levels were re-evaluated with a new magnitude-estimation procedure for measuring unaided and aided loudness discomfort levels. Sixteen subjects had used hearing aids capable of producing uncomfortably loud warble tones. New hearing aids were fitted according to the new loudness discomfort data and the NAL recommendation for insertion gain. When forced to choose between the previously prescribed hearing aids and the new aids after three weeks of real life comparison, most subjects preferred the new instruments, but three persons finally decided to wear hearing aids with saturation levels exceeding their loudness discomfort levels. The magnitude estimation procedure was found to be clinically feasible, although problems with the instruction caused uncertainty in some cases. Measured loudness discomfort levels increased 5-10 dB between test and retest sessions.
对18名11至16岁的青少年重新评估了助听器。由于这些助听器主要是通过对助听后响度不适的非正式测试进行适配的，因此采用一种新的量级估计程序对饱和水平进行了重新评估，以测量未助听和助听后的响度不适水平。16名受试者曾使用过能够产生令人不适的响亮颤音的助听器。根据新的响度不适数据和NAL插入增益建议，为他们配备了新的助听器。在经过三周的实际使用比较后，当受试者被迫在之前规定的助听器和新助听器之间做出选择时，大多数受试者更喜欢新仪器，但有三人最终决定佩戴饱和水平超过其响度不适水平的助听器。结果发现，量级估计程序在临床上是可行的，尽管在某些情况下，指导说明方面的问题导致了不确定性。测试和重新测试期间测得的响度不适水平增加了5至10分贝。
