The authors have developed a practical tool which visualizes 3D acoustical properties of sound by using sound intensity information. The tool, VSV (Virtual Source Visualizer), consists of two main parts; analyzing software and measurement instruments. Since the goal is to provide a simple solution to 3D acoustic analysis, the authors have focused on the following items; obtain intuitively understandable results, and construct reliable system with inexpensive devices. In this paper usefulness and accuracy of our proposed method are discussed, and some examples of practical applications are also introduced.
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