Gordon-Salant S, Fitzgibbons P J
Dept. of Hearing and Speech Sciences, University of Maryland, College Park 20742, USA.
J Speech Hear Res. 1995 Oct;38(5):1150-6. doi: 10.1044/jshr.3805.1150.
This study investigated the hypothesis that age effects exert an increased influence on speech recognition performance as the number of acoustic degradations of the speech signal increases. Four groups participated: young listeners with normal hearing, elderly listeners with normal hearing, young listeners with hearing loss, and elderly listeners with hearing loss. Recognition was assessed for sentence materials degraded by noise, reverberation, or time compression, either in isolation or in binary combinations. Performance scores were converted to an equivalent signal-to-noise ratio index to facilitate direct comparison of the effects of different forms of stimulus degradation. Age effects were observed primarily in multiple degradation conditions featuring time compression of the stimuli. These results are discussed in terms of a postulated change in functional signal-to-noise ratio with increasing age.
随着语音信号声学退化数量的增加，年龄效应会对语音识别性能产生更大的影响。共有四组参与者：听力正常的年轻听众、听力正常的老年听众、有听力损失的年轻听众以及有听力损失的老年听众。对因噪声、混响或时间压缩而退化的句子材料进行识别评估，这些退化情况可以单独出现，也可以两两组合出现。将性能分数转换为等效信噪比指数，以便于直接比较不同形式刺激退化的影响。年龄效应主要在以刺激时间压缩为特征的多重退化条件下观察到。根据假定的随着年龄增长功能信噪比的变化对这些结果进行了讨论。
