语言声压级和混响对留学生汉语言语识别的影响  

Effect of Speech Sound Pressure Level and Reverberation on Chinese Speech Recongition for Foreign Students

作　　者：崔淑慧[1] 彭健新[2] 

机构地区：[1]华南理工大学国际教育学院,广东广州510640 [2]华南理工大学物理与光电学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2015年第4期133-137,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(10774048;11374106)~~

摘　　要：通过对一个教室室内声场的模拟，获取具有不同混响时间的两个房间脉冲响应，在不同语言声压级下获取留学生的主观汉语语言清晰度得分，探讨了语言声压级对留学生用教室室内汉语语言清晰度的影响。发现：在相同声压级下，混响时间越短，留学生的汉语语言清晰度得分越高；相同混响时间下，留学生的汉语语言清晰度得分先随语言声压级的提高而增加，当声压级达到某一极限值时，其语言清晰度得分随语言声压级的增大而降低。为了保证留学生用教室良好的室内汉语语言清晰度，在尽可能降低室内混响时间的前提下，建议教师授课声压级为62-74dBA之间。Two room impulse responses with different reverberation time were obtained by the acoustical simulation in a classroom. The subjective Chinese speech intelligibility was evaluated by foreign students under differentspeech sound pressure level conditions. The effect of speech sound pressure level on Chinese speech intelligibility scores for foreign students in classroom was discussed. The shorter reverberation time was, the higher Chinese speech intel- ligibility scores for foreign students were under the same speech sound pressure level condition. Chinese speech in- telligibility scores first increases with the increase of speech sound pressure level under the same reverberant time condition, but the speech intelligibility scores slightly decreased with the increase of the speech sound pressure level when the sound pressure level reaches a certain value. To ensure good Chinese speech intelligibility in classroom for foreign students, a speech sound pressure level of 62-74 dBA should be recommended with a lower reverberation time as far as possible.

关 键 词：汉语语言清晰度 语言声压级 混响时间 留学生 

分 类 号：O429[理学—声学] H017[理学—物理]