Spatialphonic360: Accuracy of the Arbitrary Sound Image Presentation using Surrounding Parametric Speakers

Digital content coexisting with the real world is increasing, and richer acoustic content is also being sought. In this study, we propose a "Spatialphonic360," which enables users to perceive stereophonic sound in all surroundings at arbitrary positions and in arbitrary postures. Through participant experiments, we compared the system’s accuracy with that of conventional systems. The results showed that Spatialphonic360 could localize any sound image regardless of the user’s posture. This research contributes to the improvement of the flexibility of stereophonic sound technology.