| 声学头模对语言清晰度测量的影响 |
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| 引用本文： | 章斯宇,郑晓林,孟子厚.声学头模对语言清晰度测量的影响[J].声学学报,2015,40(6):894-901. |
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| 作者姓名： | 章斯宇 郑晓林 孟子厚 |
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| 作者单位： | 中国传媒大学传播声学研究所 北京 100024 |
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| 基金项目： | 国家自然科学基金(11204278)资助 |
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| 摘 要： | 借助声学头模考察了水平面不同语声源和噪声源位置对语言清晰度测量的影响,比较了有声学头模的双耳STIPA与无声学头模常规STIPA测量结果的差异,分别采用录听和现场测听方式进行了同等条件下的汉语听感清晰度主观评价实验,并分析了清晰度主客观结果的相关性。结果表明:声源位置对有声学头模的STIPA以及头模录制信号和真人现场实测的听感清晰度影响显著。无声学头模的STIPA更接近有声学头模时左右耳中较差的劣势耳的STIPA结果。单侧耳与语声源同侧或与噪声源异侧对应的单侧耳听感清晰度更高,语声源和噪声源重叠对应的双耳听感清晰度最低,声源分离可以显著提高双耳听感清晰度。头模录制信号和真人现场实测的听感清晰度与无声学头模STIPA不相关,与有声学头模的STIPA高度相关,其中单侧耳听感清晰度与该单侧耳STIPA高度相关,双耳听感清晰度与左右耳STIPA的较高值相关性最高。
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| 收稿时间： | 2014-09-22 |
The influence of dummy head on measuring speech intelligibility |
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| Affiliation: | Communication Acoustics Laboratory, Communication University of China Beijing 100024 |
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| Abstract: | In order to investigate the influence of dummy head on measuring speech intelligibility, the objective and subjective speech intelligibility evaluation experiments were respectively carried out for different spatial configurations of a target source and a noise source in a horizontal plane. The differences between standard STIPA measured without a dummy head and binaural STIPA measured with a dummy head were compared and the correlation of subjective speech intelligibility and objective STIPA was analyzed. It is showed that the position of sound source affects significantly on binaural STIPA and subjective intelligibility measured by a dummy head or measured in a real-life scenario. The standard STIPA is closer to the lower value of the two binaural STIPA values. The speech intelligibility is higher for a single ear which is on the same side with the target source or on the other side of the noise source. Binaural speech intelligibility is always the lowest when both target and noise sources are at the same place but once apart the speech intelligibility will increase sharply. It is also found that the subjective intelligibility measured by a dummy head or measured in a real-life scenario is uncorrelated with standard STIPA, but correlated highly with STIPA measured with a dummy head. The subjective intelligibility of one single ear is correlated highly with STIPA measured at the same ear, and the binaural speech intelligibility is in well agreement with the higher value of the two binaural STIPA values. |
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