JP5028786B2 - 収音装置 - Google Patents
収音装置 Download PDFInfo
- Publication number
- JP5028786B2 JP5028786B2 JP2005320043A JP2005320043A JP5028786B2 JP 5028786 B2 JP5028786 B2 JP 5028786B2 JP 2005320043 A JP2005320043 A JP 2005320043A JP 2005320043 A JP2005320043 A JP 2005320043A JP 5028786 B2 JP5028786 B2 JP 5028786B2
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- JP
- Japan
- Prior art keywords
- array
- microphone
- units
- sound
- distance
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
- H04R2201/403—Linear arrays of transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
- H04R2201/405—Non-uniform arrays of transducers or a plurality of uniform arrays with different transducer spacing
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- 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)
Description
θ1=sin−1(v/fdn)・・・数式1
ここで、例えば各マイクユニットが間隔dで等距離に配置されているとすると、マイクアレイの幅Lは、L=d(n−1)で表され、ビーム幅θ1は、数式1により、マイクユニットの間隔d、アレイマイクの幅L、および周波数fによって決定される。
2−装置本体
3−脚部
4−操作部
231−スピーカアレイ
254−スピーカユニット
331−マイクアレイ
353−マイクユニット
Claims (2)
- 複数のマイクユニットを直線上に配列した収音装置であって、
前記マイクユニットを、配列の最も内側である配列原点から所定数等間隔に配列した密配列区間、
前記密配列区間よりも外側で、配列ユニット数に基づいて各ユニット間距離が広がるように配列した疎配列区間、
で配列し、
各マイクユニットの配列位置に応じて指向方向から到来する音波に基づく各マイクユニット出力が同位相になるような遅延時間で、前記密配列区間および疎配列区間の全マイクユニットの信号をそれぞれ遅延して合成する指向性制御部を備えたことを特徴とする収音装置。 - 前記疎配列区間は、前記密配列区間におけるユニット間距離の整数倍にユニット間距離が広がるようにマイクユニットを配列したことを特徴とする請求項1に記載の収音装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005320043A JP5028786B2 (ja) | 2005-11-02 | 2005-11-02 | 収音装置 |
PCT/JP2006/321729 WO2007052645A1 (ja) | 2005-11-02 | 2006-10-31 | 収音装置 |
CN2006800391418A CN101292566B (zh) | 2005-11-02 | 2006-10-31 | 收音装置 |
EP06822658A EP1947902A4 (en) | 2005-11-02 | 2006-10-31 | SOUND SENSOR |
US12/108,593 US20080260178A1 (en) | 2005-11-02 | 2008-04-24 | Audio signal transmission/reception device and microphone apparatus thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005320043A JP5028786B2 (ja) | 2005-11-02 | 2005-11-02 | 収音装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007129485A JP2007129485A (ja) | 2007-05-24 |
JP5028786B2 true JP5028786B2 (ja) | 2012-09-19 |
Family
ID=38005798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005320043A Active JP5028786B2 (ja) | 2005-11-02 | 2005-11-02 | 収音装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080260178A1 (ja) |
EP (1) | EP1947902A4 (ja) |
JP (1) | JP5028786B2 (ja) |
CN (1) | CN101292566B (ja) |
WO (1) | WO2007052645A1 (ja) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4965847B2 (ja) | 2005-10-27 | 2012-07-04 | ヤマハ株式会社 | 音声信号送受信装置 |
US8238584B2 (en) * | 2005-11-02 | 2012-08-07 | Yamaha Corporation | Voice signal transmitting/receiving apparatus |
JP4747949B2 (ja) * | 2006-05-25 | 2011-08-17 | ヤマハ株式会社 | 音声会議装置 |
WO2009051132A1 (ja) | 2007-10-19 | 2009-04-23 | Nec Corporation | 信号処理システムと、その装置、方法及びそのプログラム |
WO2012153537A1 (ja) * | 2011-05-11 | 2012-11-15 | パナソニック株式会社 | 映像表示装置 |
JP5709725B2 (ja) * | 2011-10-27 | 2015-04-30 | Toa株式会社 | マイクロホン装置 |
WO2014199446A1 (ja) * | 2013-06-11 | 2014-12-18 | Toa株式会社 | マイクロホン装置 |
USRE49437E1 (en) | 2014-09-30 | 2023-02-28 | Apple Inc. | Audio driver and power supply unit architecture |
EP3416406A1 (en) | 2014-09-30 | 2018-12-19 | Apple Inc. | Loudspeaker with reduced audio coloration caused by reflections from a surface |
DE102014220544A1 (de) * | 2014-10-09 | 2016-04-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Lautsprecherarray |
US10848866B2 (en) * | 2016-04-05 | 2020-11-24 | Hewett-Packard Development Company, L.P. | Audio interface for multiple microphones and speaker systems to interface with a host |
US10257608B2 (en) | 2016-09-23 | 2019-04-09 | Apple Inc. | Subwoofer with multi-lobe magnet |
CN108156545B (zh) * | 2018-02-11 | 2024-02-09 | 北京中电慧声科技有限公司 | 一种阵列麦克风 |
CN108696781A (zh) * | 2018-05-17 | 2018-10-23 | 四川湖山电器股份有限公司 | 一种直线型排列的麦克风在空间形成指向性的方法 |
USD900786S1 (en) * | 2018-06-19 | 2020-11-03 | Lg Electronics Inc. | Sound bar |
US11114102B2 (en) * | 2019-01-16 | 2021-09-07 | Lg Electronics Inc. | Appliance including voice recognition device |
USD938936S1 (en) * | 2019-04-03 | 2021-12-21 | Beijing Xiaomi Mobile Software Co., Ltd. | Host for television |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5969800A (ja) * | 1982-10-14 | 1984-04-20 | 三菱電機株式会社 | 音声認識用集音装置 |
JPH0286397A (ja) * | 1988-09-22 | 1990-03-27 | Nippon Telegr & Teleph Corp <Ntt> | マイクロホンアレー |
JP2567464B2 (ja) * | 1988-10-25 | 1996-12-25 | 日本電信電話株式会社 | 立体音像の採取装置と再生装置、立体音像情報の送出方法と再生装置、立体音像情報の記録方法と再生装置 |
JPH04318798A (ja) * | 1991-04-18 | 1992-11-10 | Matsushita Electric Ind Co Ltd | マイクロホン装置 |
JPH0591588A (ja) | 1991-09-27 | 1993-04-09 | Railway Technical Res Inst | 指向方向可変指向性収音装置 |
US5657393A (en) * | 1993-07-30 | 1997-08-12 | Crow; Robert P. | Beamed linear array microphone system |
NL9401860A (nl) | 1994-11-08 | 1996-06-03 | Duran Bv | Luidsprekersysteem met bestuurde richtinggevoeligheid. |
FR2742960B1 (fr) * | 1995-12-22 | 1998-02-20 | Mahieux Yannick | Antenne acoustique pour station de travail informatique |
JP3975007B2 (ja) * | 1998-07-10 | 2007-09-12 | 株式会社オーディオテクニカ | 単一指向性マイクロホン |
JP3732041B2 (ja) * | 1999-06-11 | 2006-01-05 | ティーオーエー株式会社 | マイクロホン装置 |
JP2001042888A (ja) * | 1999-07-29 | 2001-02-16 | Omron Corp | マイクロホンの設置方法および音信号処理方法、およびこれらの方法を用いた音信号の入力装置、記録装置、処理装置、ならびに音声認識処理装置、音信号処理用のプログラムが記録された記録媒体 |
DE19943875A1 (de) * | 1999-09-14 | 2001-03-15 | Thomson Brandt Gmbh | System zur Sprachsteuerung mit einem Mikrofonarray |
US6494363B1 (en) * | 2000-01-13 | 2002-12-17 | Ncr Corporation | Self-service terminal |
US20030059061A1 (en) * | 2001-09-14 | 2003-03-27 | Sony Corporation | Audio input unit, audio input method and audio input and output unit |
FR2831763B1 (fr) * | 2001-10-26 | 2004-03-19 | Get Enst | Dispositif de saisie et restitution du son utilisant plusieurs capteurs |
US20040041902A1 (en) * | 2002-04-11 | 2004-03-04 | Polycom, Inc. | Portable videoconferencing system |
GB0304126D0 (en) * | 2003-02-24 | 2003-03-26 | 1 Ltd | Sound beam loudspeaker system |
CA2524041C (en) * | 2003-05-19 | 2011-07-19 | Gentex Corporation | Rearview mirror assemblies incorporating hands-free telephone components |
US7515721B2 (en) * | 2004-02-09 | 2009-04-07 | Microsoft Corporation | Self-descriptive microphone array |
US7260228B2 (en) * | 2004-03-10 | 2007-08-21 | Altec Lansing, A Division Of Plantronics, Inc. | Optimum driver spacing for a line array with a minimum number of radiating elements |
JP4156545B2 (ja) * | 2004-03-12 | 2008-09-24 | 株式会社国際電気通信基礎技術研究所 | マイクロホンアレー |
JP2005320043A (ja) | 2004-05-11 | 2005-11-17 | Wakon Danbooru Kk | 段ボール桁材及びその桁材を用いた紙製パレット |
-
2005
- 2005-11-02 JP JP2005320043A patent/JP5028786B2/ja active Active
-
2006
- 2006-10-31 CN CN2006800391418A patent/CN101292566B/zh active Active
- 2006-10-31 EP EP06822658A patent/EP1947902A4/en not_active Withdrawn
- 2006-10-31 WO PCT/JP2006/321729 patent/WO2007052645A1/ja active Application Filing
-
2008
- 2008-04-24 US US12/108,593 patent/US20080260178A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
CN101292566A (zh) | 2008-10-22 |
US20080260178A1 (en) | 2008-10-23 |
CN101292566B (zh) | 2011-11-30 |
EP1947902A4 (en) | 2010-06-02 |
JP2007129485A (ja) | 2007-05-24 |
EP1947902A1 (en) | 2008-07-23 |
WO2007052645A1 (ja) | 2007-05-10 |
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