空间听觉定位性能主观评价方法研究

发布时间：2018-10-20 17:11

【摘要】：随着科技的不断进步和人们对视听体验要求的提高,越来越多的人开始关注听觉上的空间感受。空间听觉作为空间音频技术的重要内容,已经成为多媒体技术领域的重点研究对象。围绕人耳的听觉定位性能的研究是近年来空间听觉研究领域的一个热点,也是空间听觉技术研究中最基础和重要的一部分内容,对空间音频领域的发展具有重要意义。本文首先介绍了空间听觉技术的研究现状和人耳听觉定位性能研究的重要意义,然后分析了人耳的听觉定位机理,进一步分析了ITU推荐的几种主观评价方法以及国内外研究学者针对听觉定位主观测试所使用的感知声源指示方法。在此基础上,详细地给出了本文空间听觉定位性能主观评价研究使用的方法,并结合课题所用特定的音笼装置,利用基于Arduino平台实现的音频无线收发传输测试系统,将方法具体应用于人耳听觉定位性能的主观评价实验中。在远声场条件下(声源距离人耳距离为1.5m),对音笼装置上水平方向上由下向上θ=0°,10°,20°,30°,45°共5个平面,垂直方向上φ=0°,30°,60°,90°共4个平面的人耳听觉定位特性进行主观评价测试。声源采用1kHz单一频率声源和白噪声两种类型,利用离散的点声源方式随机进行播放。被试指示感知声源的方法采用手机激光棒指示的方法,并规定被试在听音过程中头部不允许转动。共进行了18组实验,每组实验均招募10名大学生进行测试。对所有听音实验的数据进行统计和处理,得出人耳听觉定位性能相关定性和定量的实验结果,并采用图表的形式直观地表示。最后对本文工作进行了总结,对主观听音实验的设计提出了改进的建议,对进一步多维度的研究人耳在空间中的听觉定位性能工作给出了下一步展望及研究方向。
[Abstract]:With the development of science and technology and the improvement of audiovisual experience, more and more people begin to pay attention to the spatial feeling of hearing. As an important part of space audio technology, spatial hearing has become an important research object in the field of multimedia technology. The research on auditory localization of human ear is a hot topic in the field of spatial hearing research in recent years. It is also the most basic and important part of the research of spatial auditory technology. It is of great significance to the development of spatial audio field. This paper first introduces the research status of spatial auditory technology and the important significance of human auditory localization performance, and then analyzes the auditory localization mechanism of human ear. Several subjective evaluation methods recommended by ITU and the perceptual sound source indication methods used by researchers at home and abroad for subjective testing of auditory localization are further analyzed. On this basis, the method of subjective evaluation of spatial auditory localization performance is presented in detail, and the audio wireless transceiver transmission test system based on Arduino platform is used to test the audio wireless transceiver transmission system based on the special audio cage device used in the subject. The method was applied to the subjective evaluation experiment of auditory localization performance. Under the condition of far sound field (the distance between the sound source and the ear is 1.5 m), the auditory localization characteristics of the human ear in the horizontal direction of the cage device from the bottom up 胃 = 0 掳, 10 掳, 20 掳, 30 掳, 45 掳in 5 planes, and in the vertical direction 蠁 = 0 掳, 30 掳, 60 掳, 90 掳, are evaluated subjectively. The 1kHz single frequency sound source and white noise are used in the sound source, and the discrete point sound source is used to play the sound at random. The method of indicating the sound source is the method of indicating the cell phone laser rod, and it is stipulated that the head is not allowed to rotate during the listening process. A total of 18 groups of experiments were conducted, each group recruited 10 college students for the test. Based on the statistics and processing of all the experimental data, the qualitative and quantitative experimental results of auditory localization performance were obtained, and the results were expressed intuitively in the form of charts. Finally, the work of this paper is summarized, the design of subjective hearing experiment is improved, and the future research direction of the further multi-dimensional research on auditory localization performance of human ear in space is given.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN912.3

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