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倡导使用耳塞式耳机(insert earphones)来克服临床测听中的某些困难由来已久。耳塞式耳机具有如下优点:①可以减少环境噪声之影响;②可将双耳间衰减增加至70～95dB,提高
Advocating the use of insert earphones to overcome some of the difficulties in clinical audiometry has been around for quite some time. Earbud headphones have the following advantages: ① can reduce the impact of environmental noise; ② attenuation between the two ears can be increased to 70 ~ 95dB, increase