Title:
ACOUSTIC DEVICE
Document Type and Number:
Japanese Patent JP2023024012
Kind Code:
A
Abstract:
To provide an acoustic device capable of accurately estimating a sound source direction.SOLUTION: An acoustic device is provided, including: a plurality of microphones 210, 220, 230, 240 arranged in such a manner that the directivities thereof are different from each other; a calculation section 310 acquiring signals 500 input to two of the microphones and calculating an amplitude ratio R from the amplitudes of the signals; a storage section 320 stored with correspondence relationship information related to correspondence relationship between an angle θ indicating the directions of sound sources 1000, 2000 with respect to the microphones and the amplitude ratio R; and an estimation section 330 estimating the angle from the amplitude ratio based on the correspondence relationship information.SELECTED DRAWING: Figure 3
Inventors:
NAGAI HIDEYUKI
TANEMURA TOMOKI
MIZUTANI KOJI
TANEMURA TOMOKI
MIZUTANI KOJI
Application Number:
JP2021130047A
Publication Date:
February 16, 2023
Filing Date:
August 06, 2021
Export Citation:
Assignee:
DENSO CORP
TOYOTA MOTOR CORP
MIRISE TECH CORP
TOYOTA MOTOR CORP
MIRISE TECH CORP
International Classes:
H04R3/00
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo
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