Title:
SOUND PLAYBACK DEVICE AND SOUND PLAYBACK DEVICE UNIT USING SAME
Document Type and Number:
WIPO Patent Application WO/2012/157219
Kind Code:
A1
Abstract:
This sound playback device comprises an ultra-directional speaker. Another sound playback device juxtaposed with this sound playback device has another ultra-directional speaker. These ultra-directional speakers each have an emitting surface for emitting sound waves along a sound axis, the emitting surface being positioned on the sound axis; the sound pressures of the respective sound waves thereof reach a maximum at a maximum sound pressure position. The ultra-directional speakers are disposed such that there is no overlap between a portion of an ultra-directional speaker from the emitting surface on the sound axis to the maximum sound pressure position and a portion of the other ultra-directional speaker from the emitting surface on the other sound axis to the other maximum sound pressure position.
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Inventors:
TAKEDA KATSU
KONNO FUMIYASU
KONNO FUMIYASU
Application Number:
PCT/JP2012/003052
Publication Date:
November 22, 2012
Filing Date:
May 10, 2012
Export Citation:
Assignee:
PANASONIC CORP (JP)
TAKEDA KATSU
KONNO FUMIYASU
TAKEDA KATSU
KONNO FUMIYASU
International Classes:
H04R3/00; H04N5/64; H04R1/02; H04R1/32; H04R5/02
Foreign References:
| JP2005142746A | 2005-06-02 | |||
| JP2005159446A | 2005-06-16 | |||
| JP2010068023A | 2010-03-25 | |||
| JP2010041167A | 2010-02-18 | |||
| JP2010060941A | 2010-03-18 |
Attorney, Agent or Firm:
NAITO, Hiroki et al. (JP)
Hiroki Naito (JP)
Hiroki Naito (JP)
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Claims: