Osamu Hoshuyama

NEC Corporation, Edo, Tōkyō, Japan

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Publications (4)0 Total impact

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    ABSTRACT: This paper proposes a piece of interactive art installation named the "Juke Cylinder" to augment sound images through hand interaction and to metamorphose hands into a musical instrument. To augment a sound image onto users' hands, we used a parametric loudspeaker because it can localize a sound image on a reflecting surface. When users interact with our system, they perceive that their hands are metamorphosed into various musical instruments such as a guitar, a piano, or a synthesizer. Users can control the pitches of the sounds depending on their hand interactions such as with real musical instruments. In a demonstration at a media art exhibition, this system provided visitors with extraordinary sound experiences, and we received positive feedback from them.
    Proceedings of the 9th international conference on Advances in Computer Entertainment; 11/2012
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    ABSTRACT: If you knock an object, it sounds. If you play music, loudspeakers sound. The sound you usually listen to is generated by actions or objects supposed to generate sound. However, the development of parametric loudspeakers made it possible for people to feel that the sound comes from actions or objects which are not supposed to generate sound, because the parametric loudspeaker can localize the sound image on the reflected surface[1][2]. The parametric speakers work in an entirely different way from conventional loudspeakers. They generate ultrasound, and it travels out from a parametric loudspeaker in a narrowly focused column like a flashlight beam. When it hits something, it turns back into ordinary sound you can hear. There is a computer interface using this characteristic of the parametric speaker[3].
    01/2012;
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    ABSTRACT: We propose a sound-power visualization system that uses ultrasonic power transmission to assist in the direct physical interaction between users and a sound. For the ultrasonic power transmission, we develop a novel receiving unit that extracts electrical power from the ultrasonic sound propagated through the air using the piezoelectric effect. The extracted electrical power is used to drive various devices and actuators such as LEDs, motors, and loudspeakers. We design the receiving unit for the proposed sound-power visualization system named the Visualization System for Interaction with Transmitted Audio signals (VITA). In the VITA, 144 LEDs, which react to the sound emanating from a parametric loudspeaker, are arranged in a given space; this arrangement is used to provide a visual feedback to indicate the path of the sound. The feedback helps a user to manipulate the sound easily and directly and enables an interaction to be established between the user and the acoustical environment. With our proposed receiving unit, not all the LEDs need to be wired individually. We develop a system to visualize the sound field created in space and evaluate the established interaction and the performance of the sound-to-power transformation through demonstration and experiments. We also present a detailed evaluation of two circuits of the receiving unit that are used to turn on the LEDs and make the sound path visible up to a distance of 5 meters. One of the circuits has a narrow directivity of reception of less than 10°. The other has a wide directivity of reception of 25° and a high efficiency of transformation of ultrasonic sound to electrical power.
    Proceedings of the 8th International Conference on Advances in Computer Entertainment Technology, ACE 2011, Lisbon, Portugal, November 8-11, 2011; 01/2011
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    ABSTRACT: We propose a space-filling display system to visualize sound beam from ultrasonic parametric loudspeaker, which enables various spatial sound interactions with visual feedback.
    International Conference on Computer Graphics and Interactive Techniques, SIGGRAPH 2011, Vancouver, BC, Canada, August 7-11, 2011 , Poster Proceedings; 01/2011

Publication Stats

2 Citations

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Institutions

  • 2012
    • NEC Corporation
      Edo, Tōkyō, Japan
  • 2011
    • The University of Tokyo
      • Department of Mechano-Informatics
      Edo, Tōkyō, Japan