文章摘要
梁振福,李平,胡正元.环境噪声对语言识别率的影响[J].声学技术,1999,(3):123~127
环境噪声对语言识别率的影响
Influence of environmental noise on speech discrimination score
投稿时间:1998-12-03  修订日期:1999-03-10
DOI:
中文关键词: 声级  语言干扰级  信噪比  语言识别率
英文关键词: sound level  speech interference level(SIL)  signal-to-noise ratio(S/N)  speech discrimination score
基金项目:
作者单位
梁振福 海军医学研究所, 上海 200433 
李平 海军医学研究所, 上海 200433 
胡正元 海军医学研究所, 上海 200433 
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中文摘要:
      本文比较了4种干扰声源声级(dBA)和语言干扰级(SIL)的关系,观察了不同dBA、SIL和信噪比(S/N)对语言识别率影响的规律。结果表明dBA与SIL有很好的线性关系,但不同性质的噪声源,两者间的差值相差很大。4种干扰声源下的语言识别率都有随dBA和SIL的增加而减少,随SdBA/NdBA和SdBA/NSIL的增加而提高的趋势,但语言识别率与dBA、SdBA/NdBA的相关性因噪声的性质不同有很大差异,而与SIL、SdBA/NSIL的相关性受噪声性质的影响很小。
英文摘要:
      Comparisons were made of four kinds of dBA and SIL and a study was undertaken to observe the influence of various dBA, SIL and S/N on speech discrimination score. The results showed that under the four kinds of noise source the speech discrimination score was decreased with increasing of dBA or SIL, and was raised with increasing of SdBA/NdBA or SdBA/NSIL. The correlation between speech discrimination score and dBA or SdBA/NdBA was varied due to different noise sources, but the noise characteristics showed little influence on correlation between speech discrimination score and SIL or SdBA/NSIL.
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