KR0152663B1 - 지향성 마이크로폰 - Google Patents
지향성 마이크로폰Info
- Publication number
- KR0152663B1 KR0152663B1 KR1019900006974A KR900006974A KR0152663B1 KR 0152663 B1 KR0152663 B1 KR 0152663B1 KR 1019900006974 A KR1019900006974 A KR 1019900006974A KR 900006974 A KR900006974 A KR 900006974A KR 0152663 B1 KR0152663 B1 KR 0152663B1
- Authority
- KR
- South Korea
- Prior art keywords
- sensor
- reflector
- directional microphone
- directional
- microphone
- 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.)
- Expired - Fee Related
Links
- 230000004044 response Effects 0.000 claims description 25
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 230000003993 interaction Effects 0.000 claims 1
- 238000013461 design Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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
-
- 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
- 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
- H04R1/326—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for microphones
-
- 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
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Stereophonic Arrangements (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
Claims (9)
- 반사기(5)에 관하여 배치된 센서(11)를 포함하는 지향성 마이크로폰에 있어서, 상기 센서의 응답 패턴이 비교적 높은 감도(sensitivity)를 가진 장축과 비교적 낮은 감도를 가진 단축을 보유한 양지향성 일차 그래디언트 응답 패턴(bidirectional first-order gradient response pattern)이며, 상기 반사기가 평면형으로 상기 센서 근처에 배치되므로서, 상기 센서와 반사기 사이의 음향 상호작용(acoustic interaction)이 상기 센서의 출력으로 하여금 상기 센서와 상기 반사기 사이의 거리만큼 한정된 상한을 가진 주파수 범위에 걸쳐 이차 그래디언트 응답 패턴을 갖게 하는 것을 특징으로 하는 지향성 마이크로폰.
- 제1항에 있어서, 상기 센서가, 그의 응답 패턴의 장축이 상기 반사기와 직교하도록 배치되는 것을 특징으로 하는 지향성 마이크로폰.
- 제1항에 있어서, 상기 마이크로폰이 어레이 형태로 다수의 센서(31,32,111)를 포함하는 것을 특징으로 하는 지향성 마이크로폰.
- 제3항에 있어서, 상기 다수의 센서(111)가, 각각 자체 응답 패턴의 장축이 반사기(114)에 직교하도록 배향되며, 그에 따라 상기 지향성 마이크로폰이 단일 지향성 패턴(unidirectional directivity pattern)을 갖는 것을 특징으로 하는 지향성 마이크로폰.
- 제3항에 있어서, 상기 다수의 센서(31,32)가, 각각 자체 응답 패턴의 장축이 반사기(33)에 대해 경사지게 배향되며, 그에 따라 상기 지향성 마이크로폰이 환상 지향성 패턴(toroidal directional pattern)을 갖는 것을 특징으로 하는 지향성 마이크로폰.
- 제1 또는 3항에 있어서, 상기 반사기(114)가 방 벽인 것을 특징으로 하는 지향성 마이크로폰.
- 제1항에 있어서, 상기 반사기가 자동차(101)의 바람막이(107)인 것을 특징으로 하는 지향성 마이크로폰.
- 제2항에 있어서, 상기 지향성 마이크로폰이 무지향성 응답패턴(omnidirectional response pattern)을 가진 추가 센서(52)를 더 포함하며, 이 추가 센서가 상기 장축과 상기 반사기(53)의 교차점에 설치되고, 상기 센서 및 상기 추가 센서의 출력 신호가 결합되므로서, 상기 지향성 마이크로폰이 상기 반사기에 평행한 평면에서 환상 지향성 패턴을 갖게 되는 것을 특징으로 하는 지향성 마이크로폰.
- 제5 또는 8항에 있어서, 상기 반사기(33,53)가 음향-반사 테이블표면(acoustically-reflecting table surface)인 것을 특징으로 하는 지향성 마이크로폰.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/354,535 US4965775A (en) | 1989-05-19 | 1989-05-19 | Image derived directional microphones |
US354535 | 1989-05-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR900019527A KR900019527A (ko) | 1990-12-24 |
KR0152663B1 true KR0152663B1 (ko) | 1998-11-02 |
Family
ID=23393767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900006974A Expired - Fee Related KR0152663B1 (ko) | 1989-05-19 | 1990-05-16 | 지향성 마이크로폰 |
Country Status (8)
Country | Link |
---|---|
US (1) | US4965775A (ko) |
EP (1) | EP0398595B1 (ko) |
JP (1) | JPH0736635B2 (ko) |
KR (1) | KR0152663B1 (ko) |
CA (1) | CA2016301C (ko) |
DE (1) | DE69021770T2 (ko) |
DK (1) | DK0398595T3 (ko) |
HK (1) | HK33896A (ko) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5289544A (en) * | 1991-12-31 | 1994-02-22 | Audiological Engineering Corporation | Method and apparatus for reducing background noise in communication systems and for enhancing binaural hearing systems for the hearing impaired |
DE4315000A1 (de) * | 1993-05-06 | 1994-11-10 | Opel Adam Ag | Geräuschkompensierte Freisprechanlage in Kraftfahrzeugen |
US5561737A (en) * | 1994-05-09 | 1996-10-01 | Lucent Technologies Inc. | Voice actuated switching system |
US6204796B1 (en) | 1994-07-01 | 2001-03-20 | Gemstar Development Corporation | Apparatus and methods for generating codes for controlling appliances from a remote controller |
JPH08107683A (ja) * | 1994-10-03 | 1996-04-23 | Mitsubishi Electric Corp | 電動機の運転制御装置及び絶縁型双方向直流電圧変換回路 |
US5625697A (en) * | 1995-05-08 | 1997-04-29 | Lucent Technologies Inc. | Microphone selection process for use in a multiple microphone voice actuated switching system |
US5748757A (en) | 1995-12-27 | 1998-05-05 | Lucent Technologies Inc. | Collapsible image derived differential microphone |
US5742693A (en) * | 1995-12-29 | 1998-04-21 | Lucent Technologies Inc. | Image-derived second-order directional microphones with finite baffle |
US5781643A (en) * | 1996-08-16 | 1998-07-14 | Shure Brothers Incorporated | Microphone plosive effects reduction techniques |
US6122389A (en) * | 1998-01-20 | 2000-09-19 | Shure Incorporated | Flush mounted directional microphone |
JP4198915B2 (ja) * | 2000-03-24 | 2008-12-17 | インテル・コーポレーション | 空間的音波ステアリングシステム |
AU2002243224A1 (en) * | 2000-11-16 | 2002-06-24 | The Trustees Of The Stevens Institute Of Technology | Large aperture vibration and acoustic sensor |
US7146014B2 (en) | 2002-06-11 | 2006-12-05 | Intel Corporation | MEMS directional sensor system |
US20070052549A1 (en) * | 2005-08-22 | 2007-03-08 | Contec Corporation | Apparatus and method for updating encoded signal information stored in a remote control unit through direct key entry |
US7697827B2 (en) | 2005-10-17 | 2010-04-13 | Konicek Jeffrey C | User-friendlier interfaces for a camera |
US7676052B1 (en) | 2006-02-28 | 2010-03-09 | National Semiconductor Corporation | Differential microphone assembly |
US7653487B2 (en) * | 2006-10-06 | 2010-01-26 | Toyota Motor Engineering & Manufacturing North America, Inc. | Object detection apparatus and method |
JP5168079B2 (ja) * | 2008-10-22 | 2013-03-21 | ヤマハ株式会社 | 音響装置 |
NO332961B1 (no) | 2008-12-23 | 2013-02-11 | Cisco Systems Int Sarl | Forhoyet toroidmikrofonapparat |
TWI441525B (zh) * | 2009-11-03 | 2014-06-11 | Ind Tech Res Inst | 室內收音系統及室內收音方法 |
NO20093511A1 (no) * | 2009-12-14 | 2011-06-15 | Tandberg Telecom As | Toroidemikrofon |
USD743382S1 (en) * | 2013-09-20 | 2015-11-17 | Panasonic Intellectual Property Management Co., Ltd. | Microphone |
US10028051B2 (en) * | 2015-08-31 | 2018-07-17 | Panasonic Intellectual Property Management Co., Ltd. | Sound source localization apparatus |
USD895566S1 (en) | 2019-02-04 | 2020-09-08 | Biamp Systems, LLC | Speaker with amplifier |
KR20200133632A (ko) * | 2019-05-20 | 2020-11-30 | 삼성전자주식회사 | 지향성 음향 센서 및 이를 이용한 음원 거리 측정방법 |
US10904657B1 (en) | 2019-10-11 | 2021-01-26 | Plantronics, Inc. | Second-order gradient microphone system with baffles for teleconferencing |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1735905A (en) * | 1926-12-30 | 1929-11-19 | American Telephone & Telegraph | Microphone mounting |
US2457527A (en) * | 1942-10-02 | 1948-12-28 | Bell Telephone Labor Inc | Acoustic device |
US3068328A (en) * | 1956-05-10 | 1962-12-11 | Murray M Rosenfeld | Pressure gradient transducers |
US4742548A (en) * | 1984-12-20 | 1988-05-03 | American Telephone And Telegraph Company | Unidirectional second order gradient microphone |
US4675906A (en) * | 1984-12-20 | 1987-06-23 | At&T Company, At&T Bell Laboratories | Second order toroidal microphone |
US4589137A (en) * | 1985-01-03 | 1986-05-13 | The United States Of America As Represented By The Secretary Of The Navy | Electronic noise-reducing system |
US4658425A (en) * | 1985-04-19 | 1987-04-14 | Shure Brothers, Inc. | Microphone actuation control system suitable for teleconference systems |
US4802227A (en) * | 1987-04-03 | 1989-01-31 | American Telephone And Telegraph Company | Noise reduction processing arrangement for microphone arrays |
-
1989
- 1989-05-19 US US07/354,535 patent/US4965775A/en not_active Expired - Lifetime
-
1990
- 1990-05-08 CA CA002016301A patent/CA2016301C/en not_active Expired - Lifetime
- 1990-05-11 DE DE69021770T patent/DE69021770T2/de not_active Expired - Lifetime
- 1990-05-11 DK DK90305082.1T patent/DK0398595T3/da active
- 1990-05-11 EP EP90305082A patent/EP0398595B1/en not_active Expired - Lifetime
- 1990-05-16 KR KR1019900006974A patent/KR0152663B1/ko not_active Expired - Fee Related
- 1990-05-17 JP JP2125637A patent/JPH0736635B2/ja not_active Expired - Lifetime
-
1996
- 1996-02-29 HK HK33896A patent/HK33896A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0398595A2 (en) | 1990-11-22 |
JPH0736635B2 (ja) | 1995-04-19 |
DE69021770D1 (de) | 1995-09-28 |
DE69021770T2 (de) | 1996-01-11 |
US4965775A (en) | 1990-10-23 |
KR900019527A (ko) | 1990-12-24 |
EP0398595A3 (en) | 1991-11-06 |
DK0398595T3 (da) | 1995-10-02 |
JPH03101399A (ja) | 1991-04-26 |
CA2016301A1 (en) | 1990-11-19 |
EP0398595B1 (en) | 1995-08-23 |
HK33896A (en) | 1996-03-08 |
CA2016301C (en) | 1995-04-18 |
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