A Study on Implementation of Signal Processing for Interactive High Fidelity Trans-aural System using Multimedia Contents.

利用多媒体内容实现交互式高保真跨耳系统信号处理的研究。

• 批准号: 13650453
• 负责人: KASUGA Masao
• 金额: $ 2.24万
• 依托单位: Utsunomiya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650453/
• 关键词: High Presence Space; Binaural Signal Processing; Sound Reproduction; IIR Filters; Head Related Transfer Function; Sound Image Localization; Audio-Visual Interaction; 水平面全方向の音像定位; マルチメディア; 頭部伝達関数; 音像定位; 視覚聴覚の認知; 感性評価

Recent multi-media technology has made it possible to easily construct various audio-visual environments and to reproduce a three-dimensional sound field. Head-related transfer functions (HRTFs) are usually used for realizing that sound field by using FIR filters. These FIR filters have many difficult technical-items for realizing control system. In this study, we solved these problems by means of designing procedure for the HRTF using IIR filters. In conclusion, the reproducibility of a sound field was improved to the higher frequency band by using our approximation process of HRTFs in taking notice the specified frequency bands 500 Hz to 2 kHz and 8 kHz to 12.5 kHz. And furthermore, we studied audio-visual interaction from a psychological viewpoint for reproducing an auditory-visual high presence space. As the result, the sound image at the beginning of an auditory-visual stimulus presentation was more strongly captured with the visual image than that at the ending (beginning effect). In the peripheral regions, the tendency of the beginning effect was divided into two types. One is that the effect was strongly appeared in away from a gazing point. Another is that the effect was strongly appeared in the near of the point.

近来的多媒体技术使得可以容易地构造各种视听环境并再现三维声场。头部相关传递函数（HRTF）通常用于通过使用FIR滤波器来实现该声场。这些FIR滤波器在控制系统的实现上有许多技术难点。在本研究中，我们通过使用IIR滤波器设计HRTF的方法解决了这些问题。总之，通过使用我们的HRTF的近似处理，注意到指定的频带500 Hz至2 kHz和8 kHz至12.5 kHz，声场的再现性被改善到更高的频带。此外，我们从心理学的角度研究了视听互动，以再现一个视觉-听觉的高在场空间。其结果是，声音图像在开始的视觉刺激呈现更强烈地捕捉到的视觉图像比在结束（开始效果）。在边缘区，起始效应的趋势分为两种类型。一种是在远离注视点的情况下，这种效应表现得很强。另一种情况是，这种影响在点的附近强烈地显现出来。

项目成果

Seigou Yasuda, Yoshito Mekada, Hiroshi Hasegawa, Hideo Yamamoto, Kazuo Kamata, and Masao Kasuga: "Friendly supporting system for improvement of both disabled and assisting people's comfortable feeling using sound and image processing"Journal of Kansei Eng

安田诚乡、目田义人、长谷川浩、山本英夫、蒲田一夫、春日正夫：“通过声音和图像处理改善残疾人士的友好支持系统并帮助人们获得舒适感”《关西工程杂志》

河野嘉憲、他: "動的マルチメディア環境での視覚と聴覚の相互作用"映像情報メディア学会技術報告. MIP2001-72. 1-6 (2001)

Yoshinori Kono 等人：“动态多媒体环境中的视觉和听觉交互”图像信息和媒体工程师协会的技术报告 MIP2001-72 (2001)。

Seigou Yasuda他5名: "Friendly supporting system for improvement of disabled people comfortable feeling using sound and image processing"The Journal of Kansei Engineering International. 2・2. 11-18 (2001)

Seigou Yasuda等5人：“利用声音和图像处理改善残疾人舒适感的友好支持系统”《关西工程国际杂志》2·11-18（2001年）。

Masao Kasuga 他4名: "A supporting system for physically disabled people using a new combination of sound and image processing"Assistive Technology, IOS Press, 2001. 1. 334-337 (2001)

Masao Kasuga 和其他 4 人：“使用声音和图像处理的新组合为身体残疾人提供支持系统”Assistive Technology，IOS Press，2001. 1. 334-337 (2001)

Masao Kasuga, Hiroshi Hasegawa, Hideo Yamamoto, Kazuo Kamata and Seigou Yasuda: "A supporting system for physically disabled people using a new combination of sound and image processing"Proceedings of Advancement of Assistive Technology. 10, IOS Press. 33

Masao Kasuga、Hiroshi Hasekawa、Hideo Yamamoto、Kazuo Kamata 和 Seigou Yasuda：“使用声音和图像处理的新组合为身体残疾人提供支持系统”辅助技术进步论文集。