Title:
VEHICLE APPROACH NOTIFICATION DEVICE
Document Type and Number:
Japanese Patent JP2023033925
Kind Code:
A
Abstract:
To provide a vehicle approach notification device which can reduce man-hours of frequency appreciation of a notification sound.SOLUTION: A vehicle approach notification device 1 comprises: a notification sound generation part 16 which generates a notification sound; a speaker part 11 which emits the notification sound generated by the notification sound generation part 16; a sound collection part 12 which collects an echo sound reflected at a radiator support 9 at which the notification sound emitting from the speaker part 11 positions in the periphery of the speaker part 11; a frequency analysis part 17 which overlaps frequency characteristics of the echo sound collected by the sound collection part 12 with frequency characteristics of the notification sound emitting from the speaker part 11; and a frequency setting part 15 which sets such a frequency that acoustic pressure in a state that the frequency characteristics of the notification sound and the frequency characteristics of the echo sound are overlapped by the frequency analysis part 17 is a lower limit specified value or more. The notification sound generation part 16 generates the notification sound of frequency which is set by the frequency setting part 15.SELECTED DRAWING: Figure 1
Inventors:
SHIOYA KENYA
KONDO KENTA
KONDO KENTA
Application Number:
JP2021139896A
Publication Date:
March 13, 2023
Filing Date:
August 30, 2021
Export Citation:
Assignee:
TOYOTA IND CORP
International Classes:
H04R3/00; B60Q5/00
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Mikami Takashi
Hiromitsu Nakayama
Yoshiki Kuroki
Mikami Takashi
Hiromitsu Nakayama