KR20060083320A - 비임형성 방식을 이용한 녹음 장치 및 그 방법 - Google Patents
비임형성 방식을 이용한 녹음 장치 및 그 방법 Download PDFInfo
- Publication number
- KR20060083320A KR20060083320A KR1020050003803A KR20050003803A KR20060083320A KR 20060083320 A KR20060083320 A KR 20060083320A KR 1020050003803 A KR1020050003803 A KR 1020050003803A KR 20050003803 A KR20050003803 A KR 20050003803A KR 20060083320 A KR20060083320 A KR 20060083320A
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- KR
- South Korea
- Prior art keywords
- delay
- microphones
- signal
- level
- beam forming
- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
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- 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
- H04R2201/401—2D or 3D arrays of transducers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
- H04R2430/23—Direction finding using a sum-delay beam-former
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/008—Visual indication of individual signal levels
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Circuit For Audible Band Transducer (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Description
Claims (9)
- 오디오 녹음 방법에 있어서,음원을 수취하는 복수개의 마이크로폰을 소정의 위치에 배치하는 과정;상기 각 마이크로폰의 사이의 간격에 따라 각 마이크로 폰으로 수취되는 신호의 딜레이 및 레벨을 조정하여 비임을 형성하는 과정;상기 과정에서 형성된 비임의 각도 및 폭을 사용자 입력에 의해 임의로 조정하는 과정을 포함하는 오디오 녹음 방법.
- 제1항에 있어서, 상기 비임의 각도 및 폭 조정은 상기 각 마이크로 폰간에 수취되는 신호의 딜레이 및 레벨을 사용자에 의해 임의로 조절하는 것임을 특징으로 하는 오디오 녹음 방법.
- 제1항에 있어서, 상기 비임 형성 과정은 상기 복수개 마이크로폰들을 통해 입력되는 신호들의 상관도를 구하여 각 신호간의 시간 지연을 계산하고, 그 계산된 지연시간에 사용자에 의해 입력되는 지연값 및 레벨값을 반영하여 각 신호의 지연 및 레벨을 보정하고, 상기 각 신호를 합산하는 과정을 구비하는 것을 특징으로 하는 오디오 녹음 방법.
- 제1항에 있어서, 상기 복수개 마이크로폰은 기하학적으로 배치되는 것을 특 징으로 하는 오디오 녹음 방법.
- 녹음 장치에 있어서,기하학적으로 배치된 복수개의 마이크로폰들;상기 각 마이크로폰들로 부터 수취되는 각 신호의 딜레이 및 레벨을 조정하여 비임을 형성하는 비임 형성부;상기 비임 형성부에서 형성된 비임 패턴을 표시하는 표시부;상기 비임 형성부의 비임의 각도 및 폭 조절값에 대응되는 각 신호의 딜레이값과 레벨값을 상기 비임 형성부로 인가하는 비임 조절 입력부를 포함하는 오디오 녹음 장치.
- 제5항에 있어서, 상기 마이크로폰들의 개수를 조정하는 마이크로폰 인에이블/디스에이블 스위치를 더 구비하는 것을 특징으로 하는 오디오 녹음 장치.
- 제5항에 있어서, 상기 비임 형성부는상기 복수개 마이크로폰들을 통해 입력되는 신호들의 상관도를 구하여 각 신호간의 시간 지연을 계산하며, 그 계산된 지연시간에 사용자에 의해 입력되는 딜레이값과 레벨값을 반영하여 각 신호의 딜레이 및 레벨을 보정하는 딜레이 처리부;상기 딜레이 처리부에서 지연된 각 신호를 합산하여 녹음될 영역을 나타내주는 비임을 형성하는 합산부를 구비하는 것을 특징으로 하는 오디오 녹음 장치.
- 제5항에 있어서, 상기 비임 형성부에서 출력되는 신호의 잡음을 제거하는 소정의 노이즈 제거 알고리듬을 선택적으로 더 구비하는 것을 특징으로 하는 오디오 녹음 장치.
- 제5항에 있어서, 상기 비임 조절부는 상기 비임형성부에서 각 마이크로폰으로 수취된 신호의 딜레이 정도를 조절하는 비임 각도 조절 버튼;상기 비임형성부에서 각 마이크로폰으로 수취된 신호의 딜레이/레벨 정도를 조절하는 비임폭 조절 버튼을 구비하는 것을 특징으로 하는 오디오 녹음 장치.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050003803A KR100677554B1 (ko) | 2005-01-14 | 2005-01-14 | 비임형성 방식을 이용한 녹음 장치 및 그 방법 |
US11/237,954 US20060159281A1 (en) | 2005-01-14 | 2005-09-29 | Method and apparatus to record a signal using a beam forming algorithm |
CNB2005101242028A CN100525101C (zh) | 2005-01-14 | 2005-11-21 | 使用波束形成算法来记录信号的方法和设备 |
NL1030748A NL1030748C2 (nl) | 2005-01-14 | 2005-12-22 | Werkwijze en inrichting voor het opnemen van een signaal gebruikmakend van een bundelvormingsalgoritme. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050003803A KR100677554B1 (ko) | 2005-01-14 | 2005-01-14 | 비임형성 방식을 이용한 녹음 장치 및 그 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20060083320A true KR20060083320A (ko) | 2006-07-20 |
KR100677554B1 KR100677554B1 (ko) | 2007-02-02 |
Family
ID=36683915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020050003803A Expired - Fee Related KR100677554B1 (ko) | 2005-01-14 | 2005-01-14 | 비임형성 방식을 이용한 녹음 장치 및 그 방법 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060159281A1 (ko) |
KR (1) | KR100677554B1 (ko) |
CN (1) | CN100525101C (ko) |
NL (1) | NL1030748C2 (ko) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100123785A1 (en) * | 2008-11-17 | 2010-05-20 | Apple Inc. | Graphic Control for Directional Audio Input |
US8831761B2 (en) * | 2010-06-02 | 2014-09-09 | Sony Corporation | Method for determining a processed audio signal and a handheld device |
US9552840B2 (en) * | 2010-10-25 | 2017-01-24 | Qualcomm Incorporated | Three-dimensional sound capturing and reproducing with multi-microphones |
CN103873977B (zh) * | 2014-03-19 | 2018-12-07 | 惠州Tcl移动通信有限公司 | 基于多麦克风阵列波束成形的录音系统及其实现方法 |
US9674598B2 (en) * | 2014-04-15 | 2017-06-06 | Fairchild Semiconductor Corporation | Audio accessory communication with active noise cancellation |
CN107004426B (zh) * | 2014-11-28 | 2020-09-11 | 华为技术有限公司 | 录取录像对象的声音的方法和移动终端 |
WO2017016822A1 (en) * | 2015-07-27 | 2017-02-02 | Philips Lighting Holding B.V. | Light emitting device for generating light with embedded information |
CN106486147A (zh) * | 2015-08-26 | 2017-03-08 | 华为终端(东莞)有限公司 | 指向性录音方法、装置及录音设备 |
US11209306B2 (en) * | 2017-11-02 | 2021-12-28 | Fluke Corporation | Portable acoustic imaging tool with scanning and analysis capability |
WO2019231630A1 (en) * | 2018-05-31 | 2019-12-05 | Shure Acquisition Holdings, Inc. | Augmented reality microphone pick-up pattern visualization |
JP7417587B2 (ja) | 2018-07-24 | 2024-01-18 | フルークコーポレイション | 音響データを分析及び表示するためのシステム及び方法 |
US10820129B1 (en) * | 2019-08-15 | 2020-10-27 | Harman International Industries, Incorporated | System and method for performing automatic sweet spot calibration for beamforming loudspeakers |
US11788859B2 (en) | 2019-12-02 | 2023-10-17 | Here Global B.V. | Method, apparatus, and computer program product for road noise mapping |
US11393489B2 (en) * | 2019-12-02 | 2022-07-19 | Here Global B.V. | Method, apparatus, and computer program product for road noise mapping |
CN113077802B (zh) * | 2021-03-16 | 2023-10-24 | 联想(北京)有限公司 | 一种信息处理方法和装置 |
CN114708881A (zh) * | 2022-04-20 | 2022-07-05 | 展讯通信(上海)有限公司 | 基于双麦克风的定向可选拾音方法、电子设备及存储介质 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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CH533408A (de) * | 1972-02-02 | 1973-01-31 | Bommer Ag | Hörgerät |
DE2554229A1 (de) * | 1975-12-03 | 1977-06-16 | Licentia Gmbh | Vorrichtung fuer richtungsempfindliche mikrofone zur anzeige des gebietes optimaler empfindlichkeit |
DE4101933A1 (de) * | 1991-01-21 | 1992-07-23 | Schaller Werner | Steuergeraet fuer richtmikrofonsignale zur erzeugung von virtuellen richtcharakteristiken mit einstellbarer hauptempfangsrichtung und einstellbarem buendelungsgrad zur anwendung in der audiotechnik und der akustischen messtechnik |
GB2303471B (en) * | 1995-07-19 | 2000-03-22 | Olympus Optical Co | Voice activated recording apparatus |
US6535610B1 (en) * | 1996-02-07 | 2003-03-18 | Morgan Stanley & Co. Incorporated | Directional microphone utilizing spaced apart omni-directional microphones |
US6192134B1 (en) * | 1997-11-20 | 2001-02-20 | Conexant Systems, Inc. | System and method for a monolithic directional microphone array |
US6549586B2 (en) * | 1999-04-12 | 2003-04-15 | Telefonaktiebolaget L M Ericsson | System and method for dual microphone signal noise reduction using spectral subtraction |
EP1157588A1 (en) * | 1999-03-05 | 2001-11-28 | Etymotic Research, Inc | Directional microphone array system |
US7460677B1 (en) * | 1999-03-05 | 2008-12-02 | Etymotic Research Inc. | Directional microphone array system |
US6704422B1 (en) * | 2000-10-26 | 2004-03-09 | Widex A/S | Method for controlling the directionality of the sound receiving characteristic of a hearing aid a hearing aid for carrying out the method |
US7206418B2 (en) * | 2001-02-12 | 2007-04-17 | Fortemedia, Inc. | Noise suppression for a wireless communication device |
US7613310B2 (en) * | 2003-08-27 | 2009-11-03 | Sony Computer Entertainment Inc. | Audio input system |
US6912289B2 (en) * | 2003-10-09 | 2005-06-28 | Unitron Hearing Ltd. | Hearing aid and processes for adaptively processing signals therein |
-
2005
- 2005-01-14 KR KR1020050003803A patent/KR100677554B1/ko not_active Expired - Fee Related
- 2005-09-29 US US11/237,954 patent/US20060159281A1/en not_active Abandoned
- 2005-11-21 CN CNB2005101242028A patent/CN100525101C/zh not_active Expired - Fee Related
- 2005-12-22 NL NL1030748A patent/NL1030748C2/nl not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR100677554B1 (ko) | 2007-02-02 |
NL1030748C2 (nl) | 2009-10-27 |
US20060159281A1 (en) | 2006-07-20 |
CN100525101C (zh) | 2009-08-05 |
CN1805278A (zh) | 2006-07-19 |
NL1030748A1 (nl) | 2006-07-17 |
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