Investigation into Ventriloquism Effect Considering Indication of the Loudspeaker Position

Author:

Kawai Kaoru1,Muto Kenji1

Affiliation:

1. Electrical Engineering and Computer Science, Shibaura Institute of Technology 3‐7‐5 Toyosu, Koto‐ku Tokyo 135‐8548 Japan

Abstract

In this work, we investigated strength variations of the ventriloquism effect when the loudspeaker's position was indicated to the subject. The ventriloquism effect is an audiovisual cross‐modality in which a sound is heard from the position of an image, even though the sound and image are presented at different locations. Previously, this effect has been studied under conditions where the sound location is not revealed. In contrast, this paper proposes measuring the ventriloquism effect using a single loudspeaker displayed as a 3D scanned image in the background of a virtual reality (VR) image. The angular discrimination threshold (the perceived angle of disparity between the sound and the image shifted horizontally) was employed to evaluate the ventriloquism effect. The resulting ventriloquism effect was compared to the effect noted in a previous study, where measurements were conducted without revealing the loudspeaker's position to the subjects. The results indicate that revealing the loudspeaker's position emphasizes the ventriloquism effect. © 2023 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

Publisher

Wiley

Subject

Electrical and Electronic Engineering

Reference16 articles.

1. KawaiK MutoK.Effect of visibility of auditory stimulus location on ventriloquism effect using ar‐head‐mounted display.International Conference on Applied Human Factors and Ergonomics 2022 New York NY USA 2022.

2. KawaiK MutoK.Difference between the lateral and frontal side of the discrimination angle to perceive the gap of image position to sound image (in Japanese).The 2021 Autumn Meeting of the Acoustical Society of Japan 2021.

3. KawaiK MutoK.Differences in direction of lateral auditory stimuli on measurement of discrimination angle between auditory and visual stimuli using HMD (in Japanese).The 2022 Spring Meeting of the Acoustical Society of Japan 2022.

4. KawaiK MutoK.Difference between the discrimination degree sound image to image and the discrimination degree image to sound image (in japanese).The 26th Annual Conference of the Virtual Reality Society of Japan 2021.

5. Visual Factors in Auditory Localization

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