WO2011125409A1 - マイクロホン - Google Patents
マイクロホン Download PDFInfo
- Publication number
- WO2011125409A1 WO2011125409A1 PCT/JP2011/055644 JP2011055644W WO2011125409A1 WO 2011125409 A1 WO2011125409 A1 WO 2011125409A1 JP 2011055644 W JP2011055644 W JP 2011055644W WO 2011125409 A1 WO2011125409 A1 WO 2011125409A1
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- WO
- WIPO (PCT)
- Prior art keywords
- microphone
- capsule
- substrate
- diaphragms
- pair
- Prior art date
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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
- H04R1/34—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
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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
- H04R19/00—Electrostatic transducers
- H04R19/01—Electrostatic transducers characterised by the use of electrets
- H04R19/016—Electrostatic transducers characterised by the use of electrets for microphones
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
Definitions
- This invention relates to a microphone configured to cancel vibration noise caused by mechanical vibration.
- FIG. 1 shows a configuration described in Patent Document 1 as a conventional example of this type of microphone.
- FIG. 1 two electret condenser microphone units are arranged in the connector 1.
- reference numerals 2a and 2b denote diaphragms of the respective microphone units
- reference numerals 3a and 3b denote counter electrodes (back electrode plates) respectively opposed to the diaphragms 2a and 2b.
- the counter electrodes 3 a and 3 b are connected to the gate terminal of an FET (Field Effect Transistor) 4.
- FET Field Effect Transistor
- the counter electrodes 3a and 3b and the FET 4 are supported by a support member 5, and the counter electrodes 3a and 3b are arranged to face each other with the FET 4 interposed therebetween.
- the diaphragms 2a and 2b are positioned outside the counter electrodes 3a and 3b, respectively.
- a through hole 6 is formed in the connector 1, and a slit 7 e is formed between the support member 5 and the inner wall surface of the connector 1. Further, in order to form the outer cavities 7a and 7b, passages 7c and 7d are formed by cutting out the ring-shaped members 8a and 8b provided outside the diaphragms 2a and 2b.
- the sound waves incident from the through holes 6 are transmitted to the diaphragms 2a and 2b through the slits 7e, the passages 7c and 7d, and the outer cavities 7a and 7b.
- the counter electrodes 3a and 3b do not communicate with each other, and independent inner cavities 9a and 9b are formed.
- an in-phase output signal can be obtained from the two microphone units for the incident sound wave, whereas an anti-phase output is obtained for vibration noise caused by mechanical vibration.
- vibration noise can be canceled.
- the two diaphragms 2a and 2b are arranged at both ends of the microphone, that is, the two diaphragms 2a and 2b are arranged to be separated from each other.
- the vibration source is on the side wall of the connector 1 (left side)
- two vibration plates 2a the difference [Delta] L 1 of the distance from 2b vibration source of large, that amount is attributed to mechanical vibration vibrations
- an object of the present invention is to provide a microphone in which the distance between two diaphragms can be made extremely small and a high vibration noise canceling effect can be obtained.
- a microphone including a pair of diaphragms in a capsule and a pair of back electrode plates respectively opposed to the diaphragms and capable of canceling vibration noise due to mechanical vibration is provided in a capsule.
- a substrate is disposed in the middle portion of the substrate, and a pair of diaphragms are disposed in close proximity to the plate surface of the substrate with the substrate interposed therebetween.
- the distance between the two diaphragms can be made extremely small, and thereby the difference in distance between the two diaphragms from the vibration source can be reduced. A high canceling effect can be obtained against noise.
- FIG. 1 is a cross-sectional view showing a configuration of a conventional microphone.
- 2A is a perspective view seen from the upper surface side showing the appearance of an embodiment of the microphone according to the present invention
- FIG. 2B is a perspective view seen from the lower surface side of the microphone shown in FIG. 2A.
- FIG. 3 is a cross-sectional view of the microphone shown in FIGS. 2A and 2B.
- FIG. 4 is an exploded perspective view of the microphone shown in FIGS. 2A and 2B.
- 5A is a top view showing details of the pattern of the substrate
- FIG. 5B is a bottom view showing details of the pattern of the substrate.
- 6A is a perspective view seen from the upper surface side showing a state where components are mounted on the board, and FIG.
- FIG. 6B is a perspective view seen from the lower surface side showing a state where components are mounted on the board.
- 7A is a perspective view of the microphone shown in FIGS. 2A and 2B as viewed from the upper surface side, and FIG. 7B shows the state where the holder is attached to the microphone shown in FIGS. 2A and 2B. It is the perspective view seen from the lower surface side,
- FIG. 7C is sectional drawing which shows the state in which the holder was attached to the microphone shown to FIG. 2A and 2B.
- FIG. 8 is a sectional view showing another embodiment of the microphone according to the present invention.
- FIG. 9 is a sectional view showing a modification of the microphone according to the present invention.
- FIG. 2A and 2B show the appearance of an embodiment of the microphone according to the present invention
- FIG. 3 shows the cross-sectional structure thereof.
- FIG. 4 is an exploded view of each part.
- the microphone 10 has a pair of diaphragms 11 and 12, a pair of back electrode plates 13 and 14, a pair of spacers 15 and 16, and a required pattern formed on and held by the rings 11a and 12a, respectively.
- the board 17 is configured with components mounted thereon and a capsule for housing them.
- the capsule is composed of upper and lower capsules 18 and 19, and each of the capsules 18 and 19 has a cylindrical shape with one end face closed as shown in FIG.
- a part of the cylindrical surface of the capsule 18 is cut out from the opening side to form a cutout 18a.
- a part of the cylindrical surface of the capsule 19 is cut out from the opening side to form a cutout 19a.
- the capsule 19 is formed with a protruding piece 19b bent so as to protrude outward from the inner end portion (closed end surface side portion) of the notch 19a.
- the diameter of the capsule 18 is slightly smaller than the diameter of the capsule 19, and the capsule 18 has a size that can be inserted into the capsule 19.
- the open end of the capsule 19 is shown as being caulked in the assembly described later.
- the pair of back electrode plates 13 and 14 has a disk shape, and four through holes 13a and 14a are formed on the plate surfaces.
- the back electrode plates 13 and 14 are provided with peripheral wall portions 13b and 14b having a predetermined height around the back electrode plates 13 and 14, respectively.
- the back electrode plates 13 and 14 having such peripheral wall portions 13b and 14b can be formed by, for example, drawing.
- the electret is formed in the surface facing the diaphragms 11 and 12 of these back electrode plates 13 and 14.
- the spacers 15 and 16 are made of an insulating material and have a ring shape like the rings 11a and 12a that hold the diaphragms 11 and 12.
- the substrate 17 includes a circular portion 17a and a square-shaped protruding portion 17b protruding from a part of the circumference of the circular portion 17a.
- 5A and 5B show details of the substrate 17.
- a large hole 21 is formed in the substrate 17 from the protrusion 17b to the center of the circular portion 17a.
- the hole 21 includes a semicircular portion 21a formed concentrically with the circular portion 17a in the circular portion 17a, and an extension portion 21b extending from the semicircular portion 21a into the protruding portion 17b.
- an arc-shaped pattern 22a concentric with the circular portion 17a and three island-shaped patterns 22b, 22c, and 22d are formed on the upper surface of the circular portion 17a of the substrate 17.
- a pattern 22e is formed to protrude in the center direction in the center of the pattern 22a in the circumferential direction.
- Terminals 22f and 22g derived from the patterns 22b and 22d, respectively, are formed on the upper surface of the protruding portion 17b.
- an arc-shaped pattern 23a similar to the upper surface side and three island-shaped patterns 23b, 23c, and 23d are formed on the lower surface of the circular portion 17a. Is formed with a pattern 23e derived from the pattern 23d.
- the patterns 22a and 23a, 22b and 23b, 22c and 23c, 22d and 23d, and the terminal 22g and the pattern 23e are electrically connected by the through holes 24, respectively.
- the hatched portions with broken lines indicate the application region of the resist 25.
- FIG. 6A and 6B show a state in which components are mounted on the substrate 17 having the above-described configuration, and an FET 26 is mounted on the upper surface of the substrate 17 as shown in FIG.
- a capacitor 27 and a resistor 28 are mounted on the lower surface as shown in FIG. 6B.
- the back plate 13, the spacer 15, the ring 11 a holding the diaphragm 11, the substrate 17 on which the components are mounted, the ring 12 a holding the diaphragm 12, the spacer 16, and the back plate 14 are sequentially stacked in the capsule 18. Then, the capsule 19 is put on the capsule 18, and the open end of the capsule 19 is caulked.
- the pair of diaphragms 11 and 12 are arranged to face the back electrode plates 13 and 14 via the spacers 15 and 16, respectively, and to face and face the plate surface of the substrate 17 with the substrate 17 interposed therebetween.
- the rings 11a and 12a for holding the diaphragms 11 and 12 are respectively brought into contact with the patterns 22a and 23a of the substrate 17, whereby the pair of diaphragms 11 and 12 are connected to the gate terminal of the FET 26, respectively.
- the sound wave enters the capsules 18 and 19 through the hole 21 of the substrate 17, and the diaphragm 11 and 12 are transmitted.
- the back electrode plates 13 and 14 bear the back chamber responsible for the stiffness of the diaphragms 11 and 12.
- the back electrode plates 13 and 14 are provided with peripheral wall portions 13b and 14b by drawing, and the spaces surrounded by the peripheral wall portions 13b and 14b are respectively covered with the closed end surfaces of the capsules 18 and 19, respectively.
- the back chambers 32 and 33 can be easily secured without using other members, for example.
- the microphone 10 configured as described above, by providing the pair of diaphragms 11 and 12, an in-phase output signal can be obtained with respect to the incident sound wave, which is based on mechanical vibration. With respect to the vibration noise, an output having a reverse phase can be obtained, whereby the vibration noise can be canceled. Since the diaphragms 11 and 12 are disposed in close proximity to each other with the substrate 17 interposed therebetween, the difference ⁇ L 2 between the distances of the two diaphragms 11 and 12 from the vibration source is compared with the conventional microphone shown in FIG. Therefore, a microphone having a vibration noise canceling effect higher than that of a conventional microphone can be obtained.
- the sound wave is input from the hole 21 of the substrate 17 in this example, the sound wave can be uniformly guided to the upper and lower vibration systems (the pair of vibration plates 11 and 12).
- the rings 11a and 12a for holding the diaphragms 11 and 12 are directly brought into contact with the patterns 22a and 23a of the substrate 17, that is, the rings 11a and 12a of the diaphragms 11 and 12 are used as the gate ring of the FET 26. Since the configuration is shared, the corresponding configuration is simple, the stray capacitance around the gate of the FET 26 can be reduced, and high output is possible.
- the terminals 22f and 22g formed on the projecting portion 17b of the substrate 17 and the terminals of the circuit board of the electronic device on which the microphone 10 is mounted are connected via lead wires.
- the microphone In mounting the microphone, the microphone is usually mounted in a rubber holder or the like. 7A, 7B, and 7C show a state where such a holder 41 is attached to the microphone 10. FIG.
- the holder 41 is formed with a protrusion 41 a corresponding to the protrusion 17 b of the substrate 17, and the protrusion 41 a is formed with an opening 41 b communicating with the hole 21 of the substrate 17.
- FIG. 8 shows another embodiment of the microphone according to the present invention.
- the back chambers 32 and 33 are not secured by providing the peripheral wall portions 13b and 14b on the back electrode plates 13 and 14, As shown in FIG. 8, the closed end surfaces of the capsules 18 and 19 are formed in a concave shape, that is, convex portions 18b and 19c projecting to the inner surface side are formed on the peripheral edge of the closed end surfaces of the capsules 18 and 19 over the entire circumference. By doing so, the back chambers 32 and 33 are secured.
- the back electrode plates 13 and 14 have a simple disk shape, and the back chambers 32 and 33 are configured by covering the spaces surrounded by the convex portions 18b and 19c with the back electrode plates 13 and 14, respectively. Such a configuration can also be adopted.
- the sound wave is input from the hole 21 of the substrate 17, that is, input from the side surface direction of the microphone, but instead of this, as shown in FIG. Sound holes 18c and 19c may be formed on the closed end surfaces, respectively, and sound waves may be input from the vertical direction of the microphone.
- the hole 21 of the substrate 17 is not provided, and back chambers 32 and 33 are formed between the substrate 17 and the diaphragms 11 and 12, respectively.
- the microphone according to the present invention is effective as a microphone for canceling the zoom sound or the like in a digital video camera (DVC), a digital still camera (DSC) or the like, and is considered to be applied to a device that needs countermeasures against vibration such as touch noise. It is done.
- DVC digital video camera
- DSC digital still camera
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Description
Claims (8)
- カプセル内に一対の振動板と、それら振動板とそれぞれ対向された一対の背極板とを備え、機械的振動に基因する振動雑音をキャンセルすることができるマイクロホンであり、
前記カプセルの中間部に基板が配置され、
その基板を挟んで前記一対の振動板がそれぞれ前記基板の板面に近接対向されて配置されている。 - 請求項1のマイクロホンにおいて、
前記基板は前記カプセルの外に突出する突出部を有し、その突出部に一部が位置する孔が前記基板に形成され、
前記孔を通って音波が前記カプセル内に入射される。 - 請求項2のマイクロホンにおいて、
前記基板は前記カプセル内に収容された円形部と、その円形部の周の一部から突出された前記突出部とを備え、
前記孔は前記円形部の中心に至るように形成されている。 - 請求項2のマイクロホンにおいて、
前記突出部は前記カプセルに形成された開口から前記カプセルの外に突出され、
前記カプセルの前記開口部分に、前記突出部に対接する突出片が形成されている。 - 請求項2のマイクロホンにおいて、
前記突出部に外部接続用の端子が形成されている。 - 請求項1乃至5のいずれかのマイクロホンにおいて、
前記一対の振動板はそれぞれリングに張り付けられて保持され、
それらリングが前記基板にそれぞれ対接されている。 - 請求項1乃至5のいずれかのマイクロホンにおいて、
前記背極板は周壁部を有し、その周壁部で囲まれた空間が前記カプセルの端面で蓋されて背室が構成されている。 - 請求項1乃至5のいずれかのマイクロホンにおいて、
前記カプセルの端面の周縁部に、内面側に突出する凸部が全周に渡って形成され、その凸部で囲まれた空間が前記背極板で蓋されて背室が構成されている。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11765311.3A EP2557812B1 (en) | 2010-04-06 | 2011-03-10 | Microphone |
US13/583,474 US8879752B2 (en) | 2010-04-06 | 2011-03-10 | Microphone |
KR1020127022351A KR101305983B1 (ko) | 2010-04-06 | 2011-03-10 | 마이크로폰 |
CN201180015721.4A CN102812726B (zh) | 2010-04-06 | 2011-03-10 | 传声器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-087479 | 2010-04-06 | ||
JP2010087479A JP5613434B2 (ja) | 2010-04-06 | 2010-04-06 | マイクロホン |
Publications (1)
Publication Number | Publication Date |
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WO2011125409A1 true WO2011125409A1 (ja) | 2011-10-13 |
Family
ID=44762370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/055644 WO2011125409A1 (ja) | 2010-04-06 | 2011-03-10 | マイクロホン |
Country Status (7)
Country | Link |
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US (1) | US8879752B2 (ja) |
EP (1) | EP2557812B1 (ja) |
JP (1) | JP5613434B2 (ja) |
KR (1) | KR101305983B1 (ja) |
CN (1) | CN102812726B (ja) |
TW (1) | TWI504280B (ja) |
WO (1) | WO2011125409A1 (ja) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5626907B2 (ja) * | 2011-09-13 | 2014-11-19 | ホシデン株式会社 | エレクトレットコンデンサ型発音体 |
KR101726097B1 (ko) * | 2012-08-06 | 2017-04-11 | 다이킨 고교 가부시키가이샤 | 수지 조성물 및 성형품 |
DE102013214823A1 (de) * | 2013-07-30 | 2015-02-05 | Robert Bosch Gmbh | Mikrofonbauteil mit mindestens zwei MEMS-Mikrofonbauelementen |
TWI558224B (zh) * | 2013-09-13 | 2016-11-11 | 宏碁股份有限公司 | 麥克風模組與電子裝置 |
CN104796830B (zh) * | 2014-01-22 | 2018-05-11 | 宏碁股份有限公司 | 麦克风模块与电子装置 |
US9510107B2 (en) | 2014-03-06 | 2016-11-29 | Infineon Technologies Ag | Double diaphragm MEMS microphone without a backplate element |
TWI548285B (zh) * | 2015-03-13 | 2016-09-01 | Taiwan Carol Electronics Co Ltd | Active anti - vibration microphone |
EP3325560A4 (en) * | 2015-07-17 | 2019-03-27 | Nissan Chemical Corporation | NON-AQUEOUS INK COMPOSITIONS CONTAINING METALLIC NANOPARTICLES SUITABLE FOR USE IN ORGANIC ELECTRONICS |
KR20180099886A (ko) | 2016-01-21 | 2018-09-05 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 플루오로탄성중합체의 적층 가공 |
US10412503B2 (en) * | 2016-08-12 | 2019-09-10 | Shure Acquisition Holdings, Inc. | Microphone and methods of assembling microphones |
JP6945390B2 (ja) * | 2017-08-25 | 2021-10-06 | ホシデン株式会社 | マイクアッセンブリ |
JP7405074B2 (ja) | 2018-04-13 | 2023-12-26 | Agc株式会社 | スピーカー振動板及び医療用カテーテル |
CN108989959B (zh) * | 2018-08-09 | 2020-11-10 | 京东方科技集团股份有限公司 | 驻极体麦克风及其制造方法、显示装置 |
US11558695B2 (en) | 2020-03-31 | 2023-01-17 | Shure Acquisition Holdings, Inc. | Condenser microphone pattern adjustment |
JP7351792B2 (ja) | 2020-04-30 | 2023-09-27 | ホシデン株式会社 | 収音装置 |
US20230010149A1 (en) * | 2021-07-07 | 2023-01-12 | Private MONK Inc. | Voice isolation device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0241099A (ja) | 1988-07-30 | 1990-02-09 | Sony Corp | マイクロホン装置 |
JP2007174165A (ja) * | 2005-12-21 | 2007-07-05 | Rion Co Ltd | マイクロホン及びこれを用いた補聴器 |
JP2007306216A (ja) * | 2006-05-10 | 2007-11-22 | Hosiden Corp | エレクトレットコンデンサマイクロホン |
JP2008199227A (ja) * | 2007-02-09 | 2008-08-28 | Yamaha Corp | コンデンサマイク装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3141745B2 (ja) * | 1995-07-25 | 2001-03-05 | 松下電器産業株式会社 | 加速度センサ |
KR100336296B1 (ko) * | 1999-07-30 | 2002-05-13 | 장세열 | 듀얼 음원 구조를 갖는 전기-음향 변환기 |
US7130434B1 (en) * | 2003-03-26 | 2006-10-31 | Plantronics, Inc. | Microphone PCB with integrated filter |
JP3103711U (ja) * | 2003-10-24 | 2004-08-19 | 台湾楼氏電子工業股▼ふん▲有限公司 | 高効率コンデンサマイクロホン |
US7224812B2 (en) * | 2004-01-13 | 2007-05-29 | Taiwan Carol Electronics Co., Ltd. | Condenser microphone and method for making the same |
JP2005354581A (ja) * | 2004-06-14 | 2005-12-22 | Nikon Corp | 電子機器およびカメラ |
JP2006140740A (ja) * | 2004-11-11 | 2006-06-01 | Toshiba Corp | 音声発生装置 |
JP4615972B2 (ja) * | 2004-11-29 | 2011-01-19 | 株式会社オーディオテクニカ | コンデンサマイクロホンユニット |
JP4403412B2 (ja) * | 2005-04-22 | 2010-01-27 | ソニー株式会社 | マイクロホン |
US8509459B1 (en) * | 2005-12-23 | 2013-08-13 | Plantronics, Inc. | Noise cancelling microphone with reduced acoustic leakage |
US7729500B2 (en) * | 2006-12-19 | 2010-06-01 | Fortmedia, Inc. | Microphone array with electromagnetic interference shielding means |
US20080192962A1 (en) * | 2007-02-13 | 2008-08-14 | Sonion Nederland B.V. | Microphone with dual transducers |
US8705775B2 (en) * | 2007-04-25 | 2014-04-22 | University Of Florida Research Foundation, Inc. | Capacitive microphone with integrated cavity |
EP2007167A3 (en) * | 2007-06-21 | 2013-01-23 | Funai Electric Advanced Applied Technology Research Institute Inc. | Voice input-output device and communication device |
TW200942067A (en) * | 2008-03-26 | 2009-10-01 | Univ Nat Chunghsing | Voice-electric conversion chip of ribbon microphone |
-
2010
- 2010-04-06 JP JP2010087479A patent/JP5613434B2/ja active Active
-
2011
- 2011-03-09 TW TW100107917A patent/TWI504280B/zh active
- 2011-03-10 EP EP11765311.3A patent/EP2557812B1/en active Active
- 2011-03-10 KR KR1020127022351A patent/KR101305983B1/ko active IP Right Grant
- 2011-03-10 CN CN201180015721.4A patent/CN102812726B/zh active Active
- 2011-03-10 US US13/583,474 patent/US8879752B2/en not_active Expired - Fee Related
- 2011-03-10 WO PCT/JP2011/055644 patent/WO2011125409A1/ja active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0241099A (ja) | 1988-07-30 | 1990-02-09 | Sony Corp | マイクロホン装置 |
JP2748417B2 (ja) | 1988-07-30 | 1998-05-06 | ソニー株式会社 | マイクロホン装置 |
JP2007174165A (ja) * | 2005-12-21 | 2007-07-05 | Rion Co Ltd | マイクロホン及びこれを用いた補聴器 |
JP2007306216A (ja) * | 2006-05-10 | 2007-11-22 | Hosiden Corp | エレクトレットコンデンサマイクロホン |
JP2008199227A (ja) * | 2007-02-09 | 2008-08-28 | Yamaha Corp | コンデンサマイク装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2557812A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP2557812A4 (en) | 2013-11-20 |
US20130010981A1 (en) | 2013-01-10 |
TW201143473A (en) | 2011-12-01 |
KR20120127622A (ko) | 2012-11-22 |
JP5613434B2 (ja) | 2014-10-22 |
TWI504280B (zh) | 2015-10-11 |
CN102812726B (zh) | 2015-03-25 |
KR101305983B1 (ko) | 2013-09-12 |
JP2011223133A (ja) | 2011-11-04 |
US8879752B2 (en) | 2014-11-04 |
CN102812726A (zh) | 2012-12-05 |
EP2557812A1 (en) | 2013-02-13 |
EP2557812B1 (en) | 2017-06-07 |
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