Title:
拡声装置、建築物及び拡声方法
Document Type and Number:
Japanese Patent JP7390935
Kind Code:
B2
Abstract:
To provide a public address system that can appropriately amplifies sound of speaker's voice to the audience even when meeting is held in a part of a space or a plurality of meetings are held in one space at the same time.SOLUTION: A public address device 2A comprises: a sound collection position acquisition unit that acquires sound collection positions MA and MB of microphones 3A and 3B in an indoor space 100 in which a plurality of loudspeakers 5 are distributed; a sound emission condition setting unit that sets sound emission range ZA and ZB in which the sound collected by the microphones 3A and 3B is emitted, on the basis of the sound collection positions MA and MB in the indoor space 100; and an output control unit that outputs audio signals SA and SB according to the output volume VA and VB according to distances LA and LB from the sound collection position MA and MB to the loudspeakers 5A and 5B for the loudspeakers 5A and 5B belonging to the sound emission range ZA and ZB.SELECTED DRAWING: Figure 6
Inventors:
Takashi Matsumoto
Application Number:
JP2020039503A
Publication Date:
December 04, 2023
Filing Date:
March 09, 2020
Export Citation:
Assignee:
Shimizu Construction Co., Ltd.
International Classes:
H04R3/12; H04R1/40; H04R3/00
Domestic Patent References:
| JP2006211178A | ||||
| JP2003108162A | ||||
| JP2010136029A |
Foreign References:
| CN106162482A |
Attorney, Agent or Firm:
Masataka Aiba
Sadatsugu Tanaka
Takushi Koyama
Takehiko Katayose
Sadatsugu Tanaka
Takushi Koyama
Takehiko Katayose