Invention Grant
- Patent Title: Audio system for elevator
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Application No.: US17789584Application Date: 2020-03-13
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Publication No.: US11751001B2Publication Date: 2023-09-05
- Inventor: Susumu Fujiwara , Keigo Taruishi , Masami Aikawa
- Applicant: Mitsubishi Electric Corporation
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: POSZ LAW GROUP, PLC
- International Application: PCT/JP2020/011231 2020.03.13
- International Announcement: WO2021/181693A 2021.09.16
- Date entered country: 2022-06-28
- Main IPC: H04S7/00
- IPC: H04S7/00 ; B66B3/00 ; H04R1/02 ; H04R1/40

Abstract:
An audio system for an elevator includes two or more speaker cabinets arranged inside a suspended ceiling fixed to a ceiling board of a car of the elevator, an input device to which sound content radiated to an inside of the car from each of the two or more speaker cabinets are input, and a sound field control device configured to conduct phase control and reverberation time control for the sound content and thereby cause a sound wave based on the sound content to be radiated from the speaker cabinet to the inside of the car. Each of the speaker cabinets includes a casing arranged inside the suspended ceiling, and a speaker unit arranged inside the casing and having a radiation surface that radiates the sound wave.
Public/Granted literature
- US20230060349A1 AUDIO SYSTEM FOR ELEVATOR Public/Granted day:2023-03-02
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