Vertical Sound Source Localization Influenced by Visual Stimuli
Vertical Sound Source Localization Influenced by Visual Stimuli
复制标题
受视觉刺激影响的垂直声源定位
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
T. Sporer
中科院分区：
文献类型：
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作者：
S. Werner;Judith Liebetrau;T. Sporer
众所周知，对音频和视频刺激位置的感知不是独立的。通常，如果音频和视频之间的位置偏移较小，则视频占主导地位。以前的工作大多集中在自然收听条件和音频和视频在水平面上的位置偏移上。关于垂直方向的偏移量和人工可听化的声音环境的研究很少。在空间音频的不同可听化方法中，双耳再现特别有趣，因为它以适中的成本提供了对声源的方向、距离和高度的正确感知。本文讨论的问题是，在双耳复制系统中和在自然收听条件下，音频和视频刺激的知觉融合阈值是否相同。为了评估视听差异对垂直声源定位的影响，设计了两个实验。测试方法进行了优化，以提高可用性并将评分误差降至最低。这两个实验都导致了对相互竞争的听觉和视觉刺激的感觉间偏向的心理测量功能。对于双耳复制，得到的结果在垂直平面和水平平面上都显示出类似的影响，这与在自然环境中的其他研究结果很好地一致。
It is well-known that the perception of the position of audio and video stimuli is not independent. In general, video dominates the position if the position offset between audio and video is small. Most previous work focused on natural listening conditions and position offsets between audio and video in the horizontal plane. There is little research concerning offsets in vertical direction and artificial, auralized sound environments. Among different approaches to auralization of spatial audio, the binaural reproduction is especially very interestingas it offers proper perception of direction, distance, and elevation of sound sources at moderate cost. This article addresses the question whether the thresholds of perceptual fusion of audio and video stimuli are the same in binaural reproduction systems and in natural listening conditions. To estimate the influence of audio-visual discrepancy on vertical sound source localization, two experiments have been designed. The test methods were optimized to improve usability and minimize rating errors. Both experiments resulted in psychometric functions of intersensory bias for competing audio and visual stimuli. For binaural reproduction, the obtained results showed an effect of similar magnitude for both the vertical and horizontal plane which is in good agreement with the results obtained from other studies in natural environments.