Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SOUND PRODUCTION APPARATUS FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/033607
Kind Code:
A1
Abstract:
This sound production apparatus 1 for a vehicle is mounted in a vehicle 2 that travels using an electric motor 3 as a power source, and is provided with: a sound control device 10 that sets multiple frequencies f1-f9 according to the motor rotation speed R and generates a synthetic sound signal SS representing a synthetic sound SC composed of the sounds in multiple frequencies; and a speaker 20 that outputs the synthetic sound SC on the basis of the synthetic sound signal SS generated by the sound control device 10, wherein, in response to an increase in a motor torque value T, the sound control device 10 sets, within the frequency range of the synthetic sound SC, the amount of increase of the output of sounds in a low frequency band to be greater than the amount of increase of the output of sounds in a high frequency band.

Inventors:
HATTORI YUKIFUSA (JP)
MITSUNAGA SEISUKE (JP)
SHIRAISHI HIDEKAZU (JP)
SHIMIZU KATSUYA (JP)
YAMADA RYUICHI (JP)
NAKAGAMI CHIEKO (JP)
Application Number:
PCT/JP2020/030691
Publication Date:
February 25, 2021
Filing Date:
August 12, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MAZDA MOTOR (JP)
International Classes:
B60Q5/00; B62J3/00; G10K15/04
Foreign References:
JPH0732948A1995-02-03
JP2017181922A2017-10-05
JPH0553594A1993-03-05
Attorney, Agent or Firm:
TANAKA Shinichiro et al. (JP)
Download PDF: