Audio signal processing in wavenumber domain for 3D sound walkthrough system

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H02728
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Perceptual information processing
• Research Institution: Tokyo Denki University
• Principal Investigator: KANEDA Yutaka 東京電機大学, 工学部, 教授 (20328511)
• Co-Investigator(Kenkyū-buntansha): 古家 賢一 大分大学, 理工学部, 教授 (10643611) ; 片岡 章俊 龍谷大学, 理工学部, 教授 (20528682) ; 苣木 禎史 千葉工業大学, 先進工学部, 教授 (50284740) ; 羽田 陽一 電気通信大学, 大学院情報理工学研究科, 教授 (80647496)
• Co-Investigator(Renkei-kenkyūsha): NISHIJIMA Keisuke 大分大学, 理工学部, 助教 (30237698)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 3次元音響 / 波数領域処理 / マイクロホンアレイ / 頭部伝達関数 / ウォークスルー / 室内インパルス応答 / 音源位置 / 雑音抑圧

Outline of Final Research Achievements

Auditory walkthrough system, which analyzes and synthesizes the main sound source information (source signal and its location) and the ambient information (room impulse responses, reverberations, noises) from sound field, is proposed. We proposed the fast and high accuracy measurement methods of multiple impulse responses and the source separation method based on the difference between the spatial spectrum information. Furthermore, we made a prototype system in which the user can walk through virtually in the restricted reproduced-sound-field.

Free Research Field

音響信号処理