Development of a system for multiple listeners to share the same virtual acoustic field based on convolution with parallel processing

2014 Fiscal Year Final Research Report

• Project/Area Number: 24700120
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Media informatics/Database
• Research Institution: Akita Prefectural University
• Principal Investigator: WATANABE Kanji 秋田県立大学, システム科学技術学部, 助教 (20452998)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 聴覚ディスプレイ / 頭部伝達関数 / GPU / 複数聴取者 / 複数音源 / マルチユーザー / マルチチャンネル / 共有

Outline of Final Research Achievements

A head-related transfer function (HRTF) represents characteristics of sound propagation from a sound source to each eardrum of a listener. The sound convolved with HRTF makes a listener localize a virtual sound. In this study, the system that is able to present the same virtual acoustic field to multiple listeners is investigated by processing the convolution in parallel on graphics processing unit (GPU). This system can detect the position and direction of each listener’s head by image processing. Although there were a few limits to detect moving range and the number of listeners, it was demonstrated that the listeners perceived the same sound images.

Free Research Field

総合領域