Altered pinna: Exploring shape change of pinna for perception and illusion of sound direction change

Kenichiro Shirota; Roshan Lalintha Peiris; Kouta Minamizawa

doi:10.1145/3341163.3347725

Altered pinna: Exploring shape change of pinna for perception and illusion of sound direction change

Kenichiro Shirota, Roshan Lalintha Peiris, Kouta Minamizawa

Graduate School of Media Design

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	ISWC 2019 - Proceedings of the 2019 ACM International Symposium on Wearable Computers
Publisher	Association for Computing Machinery
Pages	220-224
Number of pages	5
ISBN (Electronic)	9781450368704
DOIs	https://doi.org/10.1145/3341163.3347725
Publication status	Published - 2019 Sep 9
Event	23rd International Symposium on Wearable Computers, ISWC 2019 - London, United Kingdom Duration: 2019 Sep 9 → 2019 Sep 13

Publication series

Name	Proceedings - International Symposium on Wearable Computers, ISWC
ISSN (Print)	1550-4816

Conference

Conference	23rd International Symposium on Wearable Computers, ISWC 2019
Country	United Kingdom
City	London
Period	19/9/9 → 19/9/13

Keywords

Actuating human body
Ear
Sound direction
Sound illusion
Wearable pinna device

ASJC Scopus subject areas

Software
Hardware and Architecture
Computer Networks and Communications

Access to Document

10.1145/3341163.3347725

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Cite this

Shirota, K., Peiris, R. L., & Minamizawa, K. (2019). Altered pinna: Exploring shape change of pinna for perception and illusion of sound direction change. In ISWC 2019 - Proceedings of the 2019 ACM International Symposium on Wearable Computers (pp. 220-224). (Proceedings - International Symposium on Wearable Computers, ISWC). Association for Computing Machinery. https://doi.org/10.1145/3341163.3347725

Altered pinna : Exploring shape change of pinna for perception and illusion of sound direction change. / Shirota, Kenichiro; Peiris, Roshan Lalintha; Minamizawa, Kouta.

ISWC 2019 - Proceedings of the 2019 ACM International Symposium on Wearable Computers. Association for Computing Machinery, 2019. p. 220-224 (Proceedings - International Symposium on Wearable Computers, ISWC).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Shirota, K, Peiris, RL & Minamizawa, K 2019, Altered pinna: Exploring shape change of pinna for perception and illusion of sound direction change. in ISWC 2019 - Proceedings of the 2019 ACM International Symposium on Wearable Computers. Proceedings - International Symposium on Wearable Computers, ISWC, Association for Computing Machinery, pp. 220-224, 23rd International Symposium on Wearable Computers, ISWC 2019, London, United Kingdom, 19/9/9. https://doi.org/10.1145/3341163.3347725

Shirota K, Peiris RL, Minamizawa K. Altered pinna: Exploring shape change of pinna for perception and illusion of sound direction change. In ISWC 2019 - Proceedings of the 2019 ACM International Symposium on Wearable Computers. Association for Computing Machinery. 2019. p. 220-224. (Proceedings - International Symposium on Wearable Computers, ISWC). https://doi.org/10.1145/3341163.3347725

Shirota, Kenichiro ; Peiris, Roshan Lalintha ; Minamizawa, Kouta. / Altered pinna : Exploring shape change of pinna for perception and illusion of sound direction change. ISWC 2019 - Proceedings of the 2019 ACM International Symposium on Wearable Computers. Association for Computing Machinery, 2019. pp. 220-224 (Proceedings - International Symposium on Wearable Computers, ISWC).

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abstract = "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.",

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note = "Funding Information: This work was supported by the JSPS Kakenhi (JP18K18094) of Japan.; 23rd International Symposium on Wearable Computers, ISWC 2019 ; Conference date: 09-09-2019 Through 13-09-2019",

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