文章摘要
陈竹书,毛东兴.近场条件下视觉距离感知对响度的影响[J].声学技术,2020,39(4):456~460
近场条件下视觉距离感知对响度的影响
The effect of visual distance perception on loudness in near field
投稿时间:2019-07-03  修订日期:2019-08-09
DOI:10.16300/j.cnki.1000-3630.2020.04.013
中文关键词: 近场  视觉信息  距离  响度
英文关键词: near field  visual cues  distance  loudness
基金项目:
作者单位E-mail
陈竹书 同济大学声学研究所, 上海 200092 1410579@tongji.edu.cn 
毛东兴 同济大学声学研究所, 上海 200092  
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中文摘要:
      文章研究了近场条件下,当声源距离改变时,视觉距离感知对响度的影响。在消声室中,使用球形声源在试听者的正前方发声。8位试听者分别在睁眼和闭眼的条件下,对3种中心频率(500 Hz、1 kHz和2 kHz)、8个距离(0.3~1.0 m,1.0 m为参考距离)的声信号进行了响度匹配。结果显示,随着声源距离的减小,睁眼时响度增加得要比闭眼时少一些。而闭眼时的响度匹配结果与封闭耳道口声压级的变化情况相一致。这说明闭眼时试听者根据耳道口的声压级来判断响度,而睁眼时视觉距离信息会对响度产生影响。结果还显示,对于频率越低的声信号,视觉距离感知造成的影响越大。
英文摘要:
      The effect of visual cues of sound source distance on loudness is investigated when the sound source distance changes in near field. A real spherical sound source is positioned in front of listener in an anechoic chamber, and eight listeners perform loudness matching for the stimuli at a reference distance of 1.0 m and seven test distances of 0.3~0.9 m under two conditions of eyes opening and closing at three center frequencies of 500 Hz, 1 kHz and 2 kHz. The results show that as the sound source distance decreases, loudness in eyes opening increases less than that in eyes closing. The results of loudness matching in eyes closing are in accordance with the changes of sound pressure levels measured at the blocked ear canal entrance. It demonstrates that listeners judges the loudness based on the sound pressure levels at their ears when their eyes close. However, when eyes open, the visual cues of sound source distance affects loudness perception. The results also show that the effect of visual distance perception on loudness is more obvious at lower frequencies.
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