Title:
MOBILE BODY WITH SUPERDIRECTIVITY SPEAKER
Document Type and Number:
WIPO Patent Application WO/2005/076660
Kind Code:
A1
Abstract:
A superdirectivity speaker is mounted in a mobile body (1) which radiates from a radiator (44) an output signal generated by measuring the distance to an object (11) to which sound is supplied by means of an ultrasonic transmission sensor (45) and an ultrasonic reception sensor (46) and by adjusting the preset sound level by means of an amplifier (34) having a sound level adjusting function. Sound of magnitude most suitable only for a specific object can be transmitted by the parametric action. Thus a mobile body with a superdirectivity speaker can be provided.
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Inventors:
MORI KIYOFUMI (JP)
YOSHIDA SYUNJI (JP)
OKUNO HIROSHI (JP)
NAKADAI KAZUHIRO (JP)
TSUJINO HIROSHI (JP)
YOSHIDA SYUNJI (JP)
OKUNO HIROSHI (JP)
NAKADAI KAZUHIRO (JP)
TSUJINO HIROSHI (JP)
Application Number:
PCT/JP2005/002043
Publication Date:
August 18, 2005
Filing Date:
February 10, 2005
Export Citation:
Assignee:
MITSUBISHI DENKI ENGINEERING K (JP)
HONDA MOTOR CO LTD (JP)
MORI KIYOFUMI (JP)
YOSHIDA SYUNJI (JP)
OKUNO HIROSHI (JP)
NAKADAI KAZUHIRO (JP)
TSUJINO HIROSHI (JP)
HONDA MOTOR CO LTD (JP)
MORI KIYOFUMI (JP)
YOSHIDA SYUNJI (JP)
OKUNO HIROSHI (JP)
NAKADAI KAZUHIRO (JP)
TSUJINO HIROSHI (JP)
International Classes:
G10L15/00; H04R1/02; H04R1/32; H04R3/00; H04R3/12; G10L15/20; H04R1/40; H04R5/027; H04S7/00; (IPC1-7): H04R3/00; H04R1/02; H04R1/32
Foreign References:
JP2003251583A | 2003-09-09 | |||
JP2003340764A | 2003-12-02 | |||
JP2003285286A | 2003-10-07 | |||
JP2004318026A | 2004-11-11 | |||
JP2004295059A | 2004-10-21 | |||
JP2004286805A | 2004-10-14 | |||
JPH11258101A | 1999-09-24 | |||
US6052336A | 2000-04-18 |
Other References:
See also references of EP 1720374A4
Attorney, Agent or Firm:
Tazawa, Hiroaki (7-1 Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, JP)
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