| 环境噪声对语言识别率的影响 |
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| 引用本文： | 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,1999,18(3):123-127. |
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| 作者姓名： | 梁振福 李平 胡正元 |
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| 作者单位： | 海军医学研究所 |
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| 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
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| 关 键 词： | 声级 语言干扰级 信噪比 语言识别率 |
| 收稿时间： | 1998/12/3 0:00:00 |
| 修稿时间： | 1999/3/10 0:00:00 |
Influence of environmental noise on speech discrimination score |
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| LIANG Zhen-fu,LI Ping and HU Zheng-yuan.Influence of environmental noise on speech discrimination score[J].Technical Acoustics,1999,18(3):123-127. |
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| Authors: | LIANG Zhen-fu LI Ping and HU Zheng-yuan |
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| Affiliation: | Naval Medical Research Institute, Shanghai 200433;Naval Medical Research Institute, Shanghai 200433;Naval Medical Research Institute, Shanghai 200433 |
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| Abstract: | 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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| Keywords: | sound level speech interference level(SIL) signal to noise ratio(S/N) speech discrimination score |
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