Title:
音源方向検出装置、音源方向検出方法及び音源方向検出カメラ
Document Type and Number:
Japanese Patent JP4872871
Kind Code:
B2
Abstract:
Disclosed herein is a sound source direction detecting apparatus including: a plurality of microphones configured to collect sounds from a sound source in order to form an audio frame; a frequency decomposition section configured to decompose the audio frame into frequency components; an error range determination section configured to determine the effects of noises collected together with the sounds as an error range relative to phases; a power level dispersion section configured to disperse power levels of the sounds for each of the frequency components decomposed by the frequency decomposition section, on the basis of the error range determined by the error range determination section; a power level addition section configured to add the power levels dispersed by the power level dispersion section; and a sound source direction detection section configured to detect the direction of the sound source based on the phase at which is located the highest of the power levels added by the power level addition section.
Inventors:
Takayoshi Kawaguchi
Yasuhiro Kodama
Sakuraba Yohei
Yasuhiro Kodama
Sakuraba Yohei
Application Number:
JP2007252734A
Publication Date:
February 08, 2012
Filing Date:
September 27, 2007
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G10L15/28; G10L21/0272; G10L21/028; H04N7/15; H04R1/40; H04R3/00
Domestic Patent References:
| JP2004325127A | ||||
| JP2006194700A | ||||
| JP2004012151A | ||||
| JP7336790A | ||||
| JP2000284793A | ||||
| JP10074138A |
Other References:
吉田 尚史,調波構造と音源方向に基づく音源分離法における残響耐性の改善,電子情報通信学会技術研究報告 Vol.103 No.27,日本,社団法人電子情報通信学会,2003年 4月,第103巻,p.31-36
黄 捷、大西 昇、杉江 昇,時間差ヒストグラムを用いた複数音源定位システム,日本ロボット学会誌 第9巻 第1号,日本,社団法人日本ロボット学会,1991年 2月,第9巻,p.29-38
黄 捷、大西 昇、杉江 昇,時間差ヒストグラムを用いた複数音源定位システム,日本ロボット学会誌 第9巻 第1号,日本,社団法人日本ロボット学会,1991年 2月,第9巻,p.29-38
Attorney, Agent or Firm:
Yoshitsuno Kakuda
Hitoshi Ito
Hitoshi Ito