WO2008126343A1 - 収音方法および装置 - Google Patents

収音方法および装置 Download PDF

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Publication number
WO2008126343A1
WO2008126343A1 PCT/JP2008/000495 JP2008000495W WO2008126343A1 WO 2008126343 A1 WO2008126343 A1 WO 2008126343A1 JP 2008000495 W JP2008000495 W JP 2008000495W WO 2008126343 A1 WO2008126343 A1 WO 2008126343A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
collecting
sound source
pressure distribution
collecting method
Prior art date
Application number
PCT/JP2008/000495
Other languages
English (en)
French (fr)
Inventor
Hareo Hamada
Yoshitaka Murayama
Akira Gotoh
Original Assignee
Dimagic Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dimagic Co., Ltd. filed Critical Dimagic Co., Ltd.
Priority to JP2009508877A priority Critical patent/JP4898907B2/ja
Publication of WO2008126343A1 publication Critical patent/WO2008126343A1/ja

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/027—Spatial or constructional arrangements of microphones, e.g. in dummy heads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/15—Aspects of sound capture and related signal processing for recording or reproduction

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

　近接配置された複数のマイクロホンを用いて、空間上の単数あるいは複数存在する音源の位置および方向を推定し、音源の存在する任意の方向に対して、指向性を付けて収音することにより、音源の音響情報を強調する形で収音が可能な収音方法および装置を提供する。方向推定部２２は、このフィルタ係数セットを各収音用マイクロホンＩ11～ＨMNによって音場内から収録した音に畳み込むことより、方向別の音圧分布を算出して、音源の方向推定を行うものである。また、フィルタＨを高速に切り換えることで常に駆動する制御フィルタを限定し、演算量を抑えながらもあらゆる方向の音源音圧分布算出を行うものである。
PCT/JP2008/000495 2007-03-29 2008-03-07 収音方法および装置 WO2008126343A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009508877A JP4898907B2 (ja) 2007-03-29 2008-03-07 収音方法および装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-117719 2007-03-29
JP2007117719 2007-03-29

Publications (1)

Publication Number Publication Date
WO2008126343A1 true WO2008126343A1 (ja) 2008-10-23

Family

ID=39863506

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/000495 WO2008126343A1 (ja) 2007-03-29 2008-03-07 収音方法および装置

Country Status (3)

Country Link
JP (1) JP4898907B2 (ja)
TW (1) TW200908774A (ja)
WO (1) WO2008126343A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010220173A (ja) * 2009-03-19 2010-09-30 Yamaha Corp 録音再生装置
JP2015154207A (ja) * 2014-02-13 2015-08-24 本田技研工業株式会社 音響処理装置、及び音響処理方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0690492A (ja) * 1992-09-07 1994-03-29 Sony Corp 音声入力装置
JPH06261390A (ja) * 1993-03-04 1994-09-16 Sony Corp マイクロホン装置
JPH08122424A (ja) * 1994-09-01 1996-05-17 Nec Corp 適応アレイ装置
JPH0921863A (ja) * 1995-07-05 1997-01-21 Haruo Hamada 信号源探査方法及び装置
JP2001045590A (ja) * 1999-08-03 2001-02-16 Fujitsu Ltd マイクロホンアレイ装置
JP2001309483A (ja) * 2000-04-19 2001-11-02 Nippon Telegr & Teleph Corp <Ntt> 収音方法および収音装置
JP2002062348A (ja) * 2000-08-24 2002-02-28 Sony Corp 信号処理装置及び信号処理方法
JP2005258215A (ja) * 2004-03-12 2005-09-22 Shigeki Sagayama 信号処理方法及び信号処理装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09140000A (ja) * 1995-11-15 1997-05-27 Nippon Telegr & Teleph Corp <Ntt> 会議用拡聴器
JP4670682B2 (ja) * 2006-02-28 2011-04-13 日本ビクター株式会社 オーディオ装置及び指向音生成方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0690492A (ja) * 1992-09-07 1994-03-29 Sony Corp 音声入力装置
JPH06261390A (ja) * 1993-03-04 1994-09-16 Sony Corp マイクロホン装置
JPH08122424A (ja) * 1994-09-01 1996-05-17 Nec Corp 適応アレイ装置
JPH0921863A (ja) * 1995-07-05 1997-01-21 Haruo Hamada 信号源探査方法及び装置
JP2001045590A (ja) * 1999-08-03 2001-02-16 Fujitsu Ltd マイクロホンアレイ装置
JP2001309483A (ja) * 2000-04-19 2001-11-02 Nippon Telegr & Teleph Corp <Ntt> 収音方法および収音装置
JP2002062348A (ja) * 2000-08-24 2002-02-28 Sony Corp 信号処理装置及び信号処理方法
JP2005258215A (ja) * 2004-03-12 2005-09-22 Shigeki Sagayama 信号処理方法及び信号処理装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010220173A (ja) * 2009-03-19 2010-09-30 Yamaha Corp 録音再生装置
JP2015154207A (ja) * 2014-02-13 2015-08-24 本田技研工業株式会社 音響処理装置、及び音響処理方法
US10139470B2 (en) 2014-02-13 2018-11-27 Honda Motor Co., Ltd. Sound processing apparatus and sound processing method

Also Published As

Publication number Publication date
JP4898907B2 (ja) 2012-03-21
JPWO2008126343A1 (ja) 2010-07-22
TWI380704B (ja) 2012-12-21
TW200908774A (en) 2009-02-16

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