语速对正常青年人可接受噪声级的影响

Effects of Mandarin Speech Rate on Mandarin Acceptable Noise Level Test in Normal Hearing Adults

苏俊;李文靖;张云美;周慧;

1:浙江中医药大学

摘要
目的研究语速是否对可接受噪声级(acceptable noise level,ANL)测试产生影响。方法选取国家普通话水平测试用朗读作品的音频材料,制作出0.8、1和1.2倍语速的ANL测试材料,对58名听力正常的青年人进行3种语速测试材料的ANL测试,分别获得最舒适响度级(most comfortable loudness,MCL),最大背景噪声级(background noise level,BNL),并根据ANL=MCL—BNL计算出ANL值,进行统计学分析。结果 0.8、1和1.2倍语速条件下ANL值分别为2.88±3.81、2.76±3.76、3.16±3.72dB HL,三种语速下的MCL、BNL、ANL值差异无统计学意义(P>0.05),0.8、1和1.2倍语速条件下MCL与ANL均无相关关系(P>0.05),BNL与ANL均呈负相关(P<0.01)。结论本研究发现三种语速ANL测试材料的语速并不影响ANL值;个体接受背景噪声的能力越强,其ANL值越小。
关键词
语速;可接受噪声级;最舒适响度级;最大背景噪声级
基金项目(Foundation):
作者
苏俊;李文靖;张云美;周慧;
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