KR900019527A - 지향성 마이크로폰 및 음향 센서 - Google Patents
지향성 마이크로폰 및 음향 센서 Download PDFInfo
- Publication number
- KR900019527A KR900019527A KR1019900006974A KR900006974A KR900019527A KR 900019527 A KR900019527 A KR 900019527A KR 1019900006974 A KR1019900006974 A KR 1019900006974A KR 900006974 A KR900006974 A KR 900006974A KR 900019527 A KR900019527 A KR 900019527A
- Authority
- KR
- South Korea
- Prior art keywords
- directional
- acoustic
- directional microphone
- sensor unit
- reflective surface
- Prior art date
Links
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
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 반사 평면도 대해 배플(Baffle)이 장치된 일차 그레디언트 마이크로폰으로 구성된 이차 그레디언트 마이크로폰을 나타내는 도면, 제2도는 반사 평면에 대해 위치한 일차 그레디언트 센서의 개략도, 제5도는 테이블-탑(table-top)환상 센서 어레이의 개략도, 제6도는 X축을 따라 0=90°로 기울어져 벽에 설치된 환상 어레이에 대해 측정된 θ지향성을 나타내는 도면, 제10도는 유동성 셀(cell)방식 전화통신의 개략도.
Claims (11)
- 일차 그레디언트 특성을 가진 지향성 센서 유닛(11)을 포함하는 지향성 마이크로폰에 있어서, 상기 센서유닛이 음향 반사 표면(15)에 대하여 배치되고 그것에 의하여 상기 센서와 상기 표면 사이의 상호 작용이 상기 센서의 출력으로 하여금 이차 그레디언트 응답 패턴을 갖게 하는 것을 특징으로 하는 지향성 마이크로폰.
- 제1항의 지향성 마이크로폰에 있어서, 센서 유닛(11)이 비교적 높은 감도를 가진 장축 및 비교적 낮은 감도를 가진 단축을 가진 지향성 패턴을 가지며, 음향 반사 표면(15)이, 상기 단축에 대해 평행하게 전파하는 음파에 대한 감도에 비교했을 때, 상기 주축에 대해 평행하게 전파하는 음파에 대한 감도를 증가시키기 위해 상기 지향성 패턴의 지향성을 두드러지게 하도록 상기 축을 향하도록 배치되는 것을 특징으로 하는 지향성 마이크로폰.
- 제2항의 지향성 마이크로폰에 있어서, 음향 반사 표면(15)이 센서 유닛(11)의 지향성 패턴의 장축에 대해 반드시 수직이 되도록 향해져 있는 것을 특징으로 하는 지향성 마이크로폰.
- 제2항의 지향성 마이크로폰에 있어서, 이러한 장치가 어레이를 형성하도록 다수의 상기 음향 센서 유닛(31, 32, 111)을 포함하는 것을 특징으로 하는 지향성 마이크로폰.
- 제4항의 지향성 마이크로폰에 있어서, 각 센서 유닛(111)이 음향 반사 표면(114)에 평행한 장축으로 향해져 있고 그것에 의해 센서 장치가 반드시 무지향성 지향성 패턴을 갖는 것을 특징으로 하는 지향성 마이크로폰.
- 제4항의 지향성 마이크로폰에 있어서, 각 센서 유닛(31, 32)이 음향 반사 표면(33)에 대해 경사져 있는 장축으로 향해져 있고 그것에 의해 센서장치가 반드시 지향성 패턴을 가지는 것을 특징으로 하는 지향성 마이크로폰.
- 제 3, 4, 5 또는 6항의 지향성 마이크로폰에 있어서, 음향 반사 표면(15, 33, 114)이 룸의 벽인 것을 특징으로 하는 지향성 마이크로폰.
- 제3항의 지향성 마이크로폰에 있어서, 음향 반사 표면이 자동차(101)의 바람막이 유리(107)인 것을 특징으로 하는 지향성 마이크로폰.
- 제2항의 지향성 마이크로폰에 있어서, 상기 지향성 음향 센서 유닛(51)이 음향 반사 표면(53)에 대해 반드시 수직인 장축으로 향해져 있고, 이러한 센서 장치가 지향성 음향 센서 유닛 및 음향 반사 표면의 단축의 교차 부분에 설치된 무지향성 음향 센서 유닛(52)을 포함하며, 그것에 의해 센서 장치가 음향 반사 표면에 반드시 평행한 평면내에 환상 지향성 패턴을 갖는 것을 특징으로 하는 지향성 마이크로폰.
- 제9항의 지향성 마이크로폰에 있어서, 최소한 음향 반사 표면의 일부분이 음향 반사 테이블 표면인 것을 특징으로 하는 지향성 마이크로폰.
- ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
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 true KR900019527A (ko) | 1990-12-24 |
KR0152663B1 KR0152663B1 (ko) | 1998-11-02 |
Family
ID=23393767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900006974A 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 |
ATE492125T1 (de) * | 2000-03-24 | 2011-01-15 | Intel Corp | Räumliches schallsteuerungssystem |
WO2002048659A2 (en) * | 2000-11-16 | 2002-06-20 | 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 |
US4675906A (en) * | 1984-12-20 | 1987-06-23 | At&T Company, At&T Bell Laboratories | Second order toroidal microphone |
US4742548A (en) * | 1984-12-20 | 1988-05-03 | American Telephone And Telegraph Company | Unidirectional second order gradient 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 EP EP90305082A patent/EP0398595B1/en not_active Expired - Lifetime
- 1990-05-11 DK DK90305082.1T patent/DK0398595T3/da active
- 1990-05-11 DE DE69021770T patent/DE69021770T2/de not_active Expired - Lifetime
- 1990-05-16 KR KR1019900006974A patent/KR0152663B1/ko not_active IP Right Cessation
- 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 |
---|---|
HK33896A (en) | 1996-03-08 |
KR0152663B1 (ko) | 1998-11-02 |
EP0398595B1 (en) | 1995-08-23 |
DE69021770D1 (de) | 1995-09-28 |
EP0398595A3 (en) | 1991-11-06 |
JPH0736635B2 (ja) | 1995-04-19 |
EP0398595A2 (en) | 1990-11-22 |
JPH03101399A (ja) | 1991-04-26 |
US4965775A (en) | 1990-10-23 |
DK0398595T3 (da) | 1995-10-02 |
CA2016301A1 (en) | 1990-11-19 |
CA2016301C (en) | 1995-04-18 |
DE69021770T2 (de) | 1996-01-11 |
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