3D虚拟声算法研究与实现

发布时间：2018-03-06 02:04

本文选题：虚拟听觉空间技术　切入点：头相关传输函数　出处：《西安电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：虚拟听觉空间技术是多媒体领域的一项重要技术，用于在虚拟环境中加入与视觉同步的虚拟声音，从而模拟出真实的场景。虚拟听觉空间技术广泛应用在军事、娱乐、教育和医疗等诸多领域。因此，对虚拟听觉空间技术的研究具有非常重要的理论意义。本文研究和分析了与虚拟听觉空间技术相关的空间听觉和HRTF理论知识，重点分析了基于HRTF的3D声系统。通过对PKUIOA测量的HRTF数据库进行研究，设计并实现了基于HRTF的3D声改进系统。该系统在实现了原系统仿真远场水平平面和垂直平面环绕功能的基础上，增加了三部分功能：第一，近场水平平面和垂直平面环绕；第二，特定方位角与水平角的距离变化模式；第三，对不同耳朵类型（大耳和小耳）进行选择的功能。最后，对系统产生的结果与HRTF数据进行了详细的对比和分析。结果表明，系统处理过后的音频较原始音频在空间感和立体感上有明显提升；此外，，距离、耳朵类型和水平角三种因素会对HRTF产生不同程度的影响。
[Abstract]:Virtual auditory space technology is an important technology in the field of multimedia, which is used to add virtual sound synchronized with vision in virtual environment, so as to simulate real scene. Virtual auditory space technology is widely used in military and entertainment. Therefore, the research on virtual auditory space technology is of great theoretical significance. In this paper, the spatial hearing and HRTF theory related to virtual auditory spatial technology are studied and analyzed, and the 3D acoustic system based on HRTF is emphatically analyzed. The HRTF database of PKUIOA measurement is studied. A 3D sound improvement system based on HRTF is designed and implemented. Based on the original system simulation of far-field horizontal plane and vertical plane, three functions are added: first, near-field horizontal plane and vertical plane surround; Second, the distance between the azimuth angle and the horizontal angle; thirdly, the function of selecting different ear types (big ear and small ear). Finally, the results of the system are compared and analyzed in detail with the HRTF data. Compared with the original audio, the audio processed by the system can significantly improve the sense of space and the sense of three-dimensional, in addition, the distance, ear type and horizontal angle will have different effects on HRTF.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN912.3;TP391.9

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