3D sound intensity measurement was carried out in two Dolby Atmos-compliant mixing rooms, and spatial sound localizations were visualized by using a newly developed visualizer, VSV (Virtual Source Visualizer), which locates sound directions on panoramic 4p space by using 3D sound intensity. Since in conventional channel-based sound design, sound localizations depend on loudspeakers' positions, there should be differences among mixing rooms. But in object-based sound design as is provided by Atmos, sound localization is rendered by RMU (Rendering and Mastering Unit) using metadata of azimuth and elevation angle and is expected not to depend on loudspeakers' positions. The session discusses inter-room compatibility / difference of sound direction using the visualization method between two mixing rooms, a small Home Atmos-compliant mixing room, and a Cinema Atmos-compliant large stage.
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