论文部分内容阅读
过去50年中助听器的研究进展很慢,这是因为:①参加此项研究者多未经必要的有关技术的训练;②至今还依靠语言识别试验(这一不可靠的方法)来选择助听器;③仍袭用过去陈旧的成果和④研究者分散,互不联系等。早在30年代就提出选择助听器的频率响应、以听阈和不适阈间的听域二等分为基础的选择法。40年代提出助听器增益曲线等。二次大战后Carhart以语言接受阈和语言识别率为基础的选择法,对助听器研究影响达20年之久,而在临床
The research on hearing aids has been slow in the past 50 years because: ① most of the participants in this study did not have the necessary training in relevant technologies; ② so far, they have relied on speech recognition tests (this unreliable method) to select hearing aids; ③ still use the past results of obsolescence and ④ researchers scattered, not linked to each other. As early as the 1930s, the frequency response of the hearing aid was chosen to be based on the dichotomy-based selection method between the hearing threshold and the discomfort threshold. In the 40’s, the hearing aid gain curve was proposed. After World War II, Carhart’s method of choice based on linguistic acceptance thresholds and speech recognition rates has had a 20-year impact on hearing aid research,