Altered Pinna

Kenichiro Shirota代田 兼一郎
Roshan Peirisロシャン ペイリス
Kouta Minamizawa南澤 孝太

This study demonstrates that by opening and closing the human pinna, we can change the direction of sound perceived by humans. Each ear was independently transformed into a 100% open, 50% open, and 100% closed state, and all 9 combinations of these ear transformations were tested to evaluate the perceived direction of the sound output from 7 speakers placed 180 degrees around the subject. We demonstrate that by deforming the pinna, we could change the perception of the direction of sound, or make it illusory. We also found that except for 1 out of 7 speakers (or directions of sound), closing 100% of the ear on the side of the speaker where the sound is coming from and 50% of the ear on the other side of the speaker tends produce the most alteration to the perceived direction of sound.

本研究は、人間の耳介そのものを開閉することにより、音源位置に対する認識を変化させられることを示した。被験者の前に半円状に、等間隔で7つのスピーカーを設置し実験した。その結果、音源方向の耳を100%閉じ、反対側の耳を50%閉じると、通常時の耳と比べて、音源の知覚に最も大きな変化が生じる傾向があることもわかった(1つのスピーカーを除く)。

 

Exhibitions

ISWC'19