Speech intelligibility (SI) is an important index for the design and assessment of speech purpose hall. The relationship between Chinese speech intelligibility scores in rooms and speech transmission index (STI) under...Speech intelligibility (SI) is an important index for the design and assessment of speech purpose hall. The relationship between Chinese speech intelligibility scores in rooms and speech transmission index (STI) under diotic listening condition was studied using monaural room impulse responses obtained from the room acoustical simulation software Odeon in previous paper. The present study employs the simulated binaural room impulse responses and auralization technique to obtain the subjective Chi- nese speech intelligibility scores using rhyme test. The relationship between Chinese speech intelligi- bility scores and STI is built and validated in rooms using dichotic (binaural) listening. The result shows that there is a high correlation between Chinese speech intelligibility scores and STI using di- chotic listening. The relationship between Chinese speech intelligibility scores and STI under diotic and dichotic listening conditions is also analyzed. Compared with diotic listening, dichotic (binaural) listening (an actual listening situation) can improve 2.7 dB signal-to-noise ratio for Mandarin Chinese speech intelligibility. STI method can predict and evaluate the speech intelligibility for Mandarin Chi- nese in rooms for dichotic (binaural) listening.展开更多
The relation between the speech intelligibility of Chinese and the speech transmission index (STI)is discussed, which is based on some useful properties of the modulation transfer function (MTF)and the result obtained...The relation between the speech intelligibility of Chinese and the speech transmission index (STI)is discussed, which is based on some useful properties of the modulation transfer function (MTF)and the result obtained by articulation tests under different signal-to-noise ratios.展开更多
车身板面贡献量分析作为研究车身振动对车内噪声影响的重要内容,常用声学传递向量(acoustic transfer vector,ATV)仿真计算来实现。为了进一步探究车身振动对车内语音清晰度的影响,通过对语音清晰度客观参量与主观评价分值的比较,确定...车身板面贡献量分析作为研究车身振动对车内噪声影响的重要内容,常用声学传递向量(acoustic transfer vector,ATV)仿真计算来实现。为了进一步探究车身振动对车内语音清晰度的影响,通过对语音清晰度客观参量与主观评价分值的比较,确定以非稳态加速工况下的语言可懂度指数(speech intelligibility index,SII)为指标,运用ATV仿真手段找出对语音清晰度影响最大的面板。分析结果显示车身顶棚面板对语音清晰度影响最大。针对分析结果,采用遗传算法搜寻和ATV逆运算仿真相结合的方法,有针对性地进行了车身顶棚阻尼敷设并加以验证。结果表明,基于语音清晰度车身板面贡献情况的优化设计,有效地改善了非稳态全油门加速工况下的车内语音清晰程度,提高了车内声音品质。展开更多
基金the National Natural Science Foundation of China (Grant No. 10774048)
文摘Speech intelligibility (SI) is an important index for the design and assessment of speech purpose hall. The relationship between Chinese speech intelligibility scores in rooms and speech transmission index (STI) under diotic listening condition was studied using monaural room impulse responses obtained from the room acoustical simulation software Odeon in previous paper. The present study employs the simulated binaural room impulse responses and auralization technique to obtain the subjective Chi- nese speech intelligibility scores using rhyme test. The relationship between Chinese speech intelligi- bility scores and STI is built and validated in rooms using dichotic (binaural) listening. The result shows that there is a high correlation between Chinese speech intelligibility scores and STI using di- chotic listening. The relationship between Chinese speech intelligibility scores and STI under diotic and dichotic listening conditions is also analyzed. Compared with diotic listening, dichotic (binaural) listening (an actual listening situation) can improve 2.7 dB signal-to-noise ratio for Mandarin Chinese speech intelligibility. STI method can predict and evaluate the speech intelligibility for Mandarin Chi- nese in rooms for dichotic (binaural) listening.
文摘The relation between the speech intelligibility of Chinese and the speech transmission index (STI)is discussed, which is based on some useful properties of the modulation transfer function (MTF)and the result obtained by articulation tests under different signal-to-noise ratios.
文摘车身板面贡献量分析作为研究车身振动对车内噪声影响的重要内容,常用声学传递向量(acoustic transfer vector,ATV)仿真计算来实现。为了进一步探究车身振动对车内语音清晰度的影响,通过对语音清晰度客观参量与主观评价分值的比较,确定以非稳态加速工况下的语言可懂度指数(speech intelligibility index,SII)为指标,运用ATV仿真手段找出对语音清晰度影响最大的面板。分析结果显示车身顶棚面板对语音清晰度影响最大。针对分析结果,采用遗传算法搜寻和ATV逆运算仿真相结合的方法,有针对性地进行了车身顶棚阻尼敷设并加以验证。结果表明,基于语音清晰度车身板面贡献情况的优化设计,有效地改善了非稳态全油门加速工况下的车内语音清晰程度,提高了车内声音品质。
