Title:
SOUND SOURCE DIRECTION ESTIMATION DEVICE
Document Type and Number:
Japanese Patent JP2016192697
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a movable sound source direction estimation device capable of estimating the direction of a sound source more accurately, even in a narrow space.SOLUTION: A sound source direction estimation device includes sound sampling means (sound, video sampling means) having at least three microphones M, ... for sampling the sound pressure signal of a sound propagating from a sound source, and installation means 13 of each microphone, and sound source direction estimation means. The sound sampling means is constituted movably while including a mobile 22A. Each microphone is installed in the installation means, so as to have a directivity for receiving the sound pressure signal from one side, and for reducing input of the sound pressure signal from other than the one side. The sound source direction estimation means estimates the direction of a sound source from the arrival time difference of the sound pressure signals entering respective microphones, the positional coordinate of the microphone and the sound speed.SELECTED DRAWING: Figure 2
Inventors:
OWAKI MASANAO
KITAHARA SHIGEO
NAGATA NAOTO
MORITA EIJI
ZAIMA TAKEFUMI
FUCHIGAMI TAKAYA
KITAHARA SHIGEO
NAGATA NAOTO
MORITA EIJI
ZAIMA TAKEFUMI
FUCHIGAMI TAKAYA
Application Number:
JP2015072006A
Publication Date:
November 10, 2016
Filing Date:
March 31, 2015
Export Citation:
Assignee:
KUMAGAI GUMI CO LTD
International Classes:
H04R3/00; G01S3/808; G10L25/51; H04N5/225; H04R1/40
Domestic Patent References:
| JP2011101407A | 2011-05-19 | |||
| JP2007096418A | 2007-04-12 | |||
| JP2008048294A | 2008-02-28 | |||
| JP2003251583A | 2003-09-09 |
Foreign References:
| WO2007013129A1 | 2007-02-01 |
Attorney, Agent or Firm:
Miyazono Yasuo