Title:
SPEAKER DEVICE AND SOUND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/167113
Kind Code:
A1
Abstract:
This speaker device includes: at least one driver including a diaphragm; an enclosure for accommodating the driver; and a plurality of drive circuits that each output a control signal for causing the diaphragm of the at least one driver to vibrate, on the basis of a sound source signal. Some of the drive circuits among the plurality of drive circuits are provided with a low-pass filter, and this low-pass filter is set so that a concave frequency in a frequency characteristic of a signal obtained by synthesizing the control signals outputted by the plurality of drive circuits corresponds to a peak frequency of a frequency characteristic of sound pressure outputted in accordance with the shape of the enclosure.
Inventors:
SUGATA HIROSHI (JP)
Application Number:
PCT/JP2023/006883
Publication Date:
September 07, 2023
Filing Date:
February 24, 2023
Export Citation:
Assignee:
FOSTER ELECTRIC CO LTD (JP)
International Classes:
H04R3/14; H04R1/24; H04R3/00; H04R9/04
Foreign References:
| JPS56114495A | 1981-09-09 | |||
| US6263079B1 | 2001-07-17 | |||
| JPS574695A | 1982-01-11 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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