Audibility-based predictions of speech recognition for children and adults with normal hearing
Audibility-based predictions of speech recognition for children and adults with normal hearing
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DOI：
10.1121/1.3658476
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发表时间：
2011-12-01
影响因子：
2.4
通讯作者：
Stelmachowicz, Patricia G.
中科院分区：
文献类型：
--
作者：
McCreery, Ryan W.;Stelmachowicz, Patricia G.
本研究调查了听力正常的儿童和成人的可听度和言语识别预测之间的关系。语音清晰度指数（SII）用于量化语音信号的可听度，并可应用于传递函数以预测语音识别分数。虽然SII在临床上用于儿童，但相对较少的研究直接评估了SII对儿童语音识别的预测。在以前的研究中，儿童需要比成年人更多的可听度才能达到最高水平的言语理解。此外，儿童可能需要比成人更大的带宽来获得最佳的语音理解，这可能会影响用于计算SII的频率重要性函数。对听力正常的116名儿童和19名成人进行了言语识别测试。刺激带宽和背景噪声水平系统地变化，以评估语音识别预测的SII和儿童和成人的频率重要性函数。结果表明，儿童需要更大的可听度，以达到相同的水平的言语理解成人。然而，成人和儿童之间的表现差异并没有在不同的频段上变化。(C)2011年美国声学学会。[DOI 10.1121/1.3658476]
This study investigated the relationship between audibility and predictions of speech recognition for children and adults with normal hearing. The Speech Intelligibility Index (SII) is used to quantify the audibility of speech signals and can be applied to transfer functions to predict speech recognition scores. Although the SII is used clinically with children, relatively few studies have evaluated SII predictions of children's speech recognition directly. Children have required more audibility than adults to reach maximum levels of speech understanding in previous studies. Furthermore, children may require greater bandwidth than adults for optimal speech understanding, which could influence frequency-importance functions used to calculate the SII. Speech recognition was measured for 116 children and 19 adults with normal hearing. Stimulus bandwidth and background noise level were varied systematically in order to evaluate speech recognition as predicted by the SII and derive frequency-importance functions for children and adults. Results suggested that children required greater audibility to reach the same level of speech understanding as adults. However, differences in performance between adults and children did not vary across frequency bands. (C) 2011 Acoustical Society of America. [DOI: 10.1121/1.3658476]