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中文核心期刊

声源水平位置对噪声烦恼度影响的实验研究

Experimental study of the effect of horizontal orientation of sound source on annoyance

  • 摘要: 开展了自由空间中声源水平位置变化对噪声烦恼度变化规律及其影响因素的实验研究。将三类典型声信号通过头相关传递函数滤波后得到不同水平方位下的待评价声信号, 然后通过主观评价实验得到烦恼度的水平空间分布特性, 最后基于双耳声学参量对烦恼度进行相关与回归分析。结果表明, 不同类型声音的烦恼度随水平角的变化趋势基本一致, 在11级评分中, 由声源水平位置引起的相对正前方的烦恼度变化范围大约是−1~2分; 声源位于正后方时烦恼度最小, 在左方和右方烦恼度最大。分析表明: 相对双耳响度或双耳响度差对三种声音的烦恼度影响显著; 相对双耳互相关系数对宽带声的影响大, 但对窄带声影响不明显; 主要影响参量的种类与观测信号的频率分布有关。影响烦恼度的主要因素既与声音整体感知有关, 也与耳间差异有关。

     

    Abstract: A laboratory study of horizontal spatial effect is conducted to study the change and influence factors of annoyance on horizontal position of the source. Three typical acoustic signals in different azimuth angles can be obtained by filtering with the head related transfer function (HRTF). Then, the annoyance scores for each stimulus are marked and horizontal spatial distribution characteristics of annoyance are obtained. At last, correlation and regression analysis are performed based on the binaural acoustic parameters and annoyance results. The results show the consistent variations of the annoyance with azimuth angles of the three kinds of sounds. The range of annoyance caused by the azimuth is about −1~2 points on an 11-point scale. Annoyance is the lowest when the sound source is directly behind, and the highest when it is on the left and right. It is found that the relative binaural loudness or the binaural loudness difference has a significant impact on annoyance of three kinds of sounds, the relative binaural cross-correlation coefficient has a significant impact on wide-band sounds but not on narrow-band sounds, and the type of parameters influencing the spatial effect is related to the frequency distribution of the observed signal. The main factors influencing the spatial effect are related to the overall perception of sound and also the differences between the ears.

     

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