Title:
SOUND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/181678
Kind Code:
A1
Abstract:
The present invention provides a sound system in which a first output direction of sound from a first electrodynamic speaker 20FL and a first ultradirectional speaker 10FL, and a second output direction of sound from a second electrodynamic speaker 20BR and a second ultradirectional speaker 10BR, are opposed to each other and directed toward the position of a listener O, and when a virtual sound source P is present at a first short distance Y1 and a second short distance Y2, a control unit 30 changes the energy ratio of the first ultradirectional speaker 10FL and the second ultradirectional speaker 10BR, and controls a first short distance level difference and a second short distance level difference, whereby it is possible to present a moving sound that passes through the listener O.
Inventors:
NAKAYAMA MASATO (JP)
EKAWA TAKUMA (JP)
EKAWA TAKUMA (JP)
Application Number:
PCT/JP2022/007568
Publication Date:
September 01, 2022
Filing Date:
February 24, 2022
Export Citation:
Assignee:
OSAKA SANGYO UNIV (JP)
International Classes:
H04R1/20; H04R3/00; H04S7/00
Domestic Patent References:
| WO2021149453A1 | 2021-07-29 |
Foreign References:
| JP2020014079A | 2020-01-23 | |||
| JP2004527968A | 2004-09-09 |
Other References:
EKAWA, TAKUMA; NAKAYAMA, MASATO; TAKAHASHI, TORU: "Moving Sound-image Construction Passing Listener in Surround System Using Parametric/Electrodynamic Loudspeakers", PROCEEDINGS OF THE SPRING MEETING OF THE ACOUSTICAL SOCIETY OF JAPAN, 24 February 2021 (2021-02-24) - 12 March 2021 (2021-03-12), JP , pages 375 - 376, XP009539472, ISSN: 1880-7658
Attorney, Agent or Firm:
ABE Shinichi et al. (JP)
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