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In this paper, we address a novel task "cooking recognition task". Cooking recognition task is to keep recognizing a cooking action of a cook and the target food product of the action at any time of the cooking. The target object of the recognition could change its visual feature completely by peeling, cutting, and mixed with others during the task. Nonetheless, such food product is called...
It is very important to develop 3D audio display systems compatible with future 3D visual displays in order to realize future 3D multimodal communications systems such as 3D television. In this paper, two 3D audio display systems using the radiated loudspeaker, that were developed by the authors, are described. In one system, the spherical radiated loudspeaker, which consists of 26 loudspeaker units...
We have realized a sound directivity control of a large planar diaphragm by controlling the bending vibrations using multiple vibrators. This paper proposes a method to determine the parameters such as the shape and thickness of the diaphragm and the position of the vibrators. In this method, the finite element method (FEM) is used to simulate the diaphragm vibrations and the boundary element method...
A conventional 3D sound field reproduction system using wave field synthesis places a lot of loudspeakers around the listener. However, since such a system is very expensive and loudspeakers come into the listener's field of vision, it is very difficult to construct an audio-visual system with it. We developed and evaluated a 3D sound field reproduction system using eight loudspeakers placed at the...
This paper aims to construct a system that produces directional sound radiation. Directional sound is intrinsically radiated from a vibrating resonant body of such instrument as a violin. The directivity is said to give the sound a realistic and spatial effect. To reproduce a sound with such directivity, we propose a method that uses multiple vibrators to artificially induce bending vibrations on...
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