Title:
SOUND PLAYBACK DEVICE, ACOUSTIC SYSTEM, AND MOBILE DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/048084
Kind Code:
A1
Abstract:
Provided is, for example, a sound playback device that is provided in a vehicle cabin and that achieves directionality control. The sound playback device is provided with a speaker and a sound-absorbing unit that is disposed in front of the speaker and that controls the radiation angle of sound radiated from the speaker. The sound-absorbing unit is made of a sound-absorbing material, and absorbs sound radiated from the speaker toward a direction in which radiation of sound is unnecessary. The sound playback device further includes a reflection unit that is made of a glass-form reflection plate and that reflects sound having passed through the sound-absorbing unit so as to direct the sound toward a desired direction. This forms a sound field that causes the sound from the speaker to be sensed as sound which arrives from a virtual speaker disposed on an outer side of the reflection plate.
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Inventors:
TANAKA TAKEHIKO (JP)
Application Number:
PCT/JP2023/025500
Publication Date:
March 07, 2024
Filing Date:
July 10, 2023
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
B60R11/02; G10K11/16; H04R1/02; H04R1/26; H04R1/32; H04R1/34; H04R5/02
Foreign References:
| JP2006101464A | 2006-04-13 | |||
| JPH02239796A | 1990-09-21 | |||
| US20040109575A1 | 2004-06-10 | |||
| JP2010011132A | 2010-01-14 | |||
| JP2019516268A | 2019-06-13 | |||
| JP2013173430A | 2013-09-05 | |||
| JP2004106658A | 2004-04-08 | |||
| JPH0672253A | 1994-03-15 | |||
| JPH04345400A | 1992-12-01 | |||
| JP2018509033A | 2018-03-29 |
Attorney, Agent or Firm:
MIYATA, Masaaki et al. (JP)
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