JP5502313B2 - マイクロホンユニット - Google Patents
マイクロホンユニット Download PDFInfo
- Publication number
- JP5502313B2 JP5502313B2 JP2008310502A JP2008310502A JP5502313B2 JP 5502313 B2 JP5502313 B2 JP 5502313B2 JP 2008310502 A JP2008310502 A JP 2008310502A JP 2008310502 A JP2008310502 A JP 2008310502A JP 5502313 B2 JP5502313 B2 JP 5502313B2
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- JP
- Japan
- Prior art keywords
- sound
- microphone unit
- acoustic resistance
- sound hole
- guide space
- 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
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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
-
- 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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- 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)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Description
オープニング(μm)=(25400÷メッシュ数)− 線径
11 筐体
12 MEMSチップ
13 ASIC(電気回路部)
15 音響抵抗部
111 第1音孔
112 第2音孔
113 第1導音空間
114 第2導音空間
122 振動膜(振動板)
122a 振動膜の上面(振動板の第1の面)
122b 振動膜の下面(振動板の第2の面)
Claims (5)
- 筐体と、前記筐体の内部に配置される振動板と、前記振動板の振動に基づいて発生する電気信号を処理する電気回路部と、を備え、
前記筐体には、第1音孔を介して外部の音を前記振動板の一方の主面に導く第1導音空間と、第2音孔を介して前記外部の音を前記振動板の他方の主面に導く第2導音空間と、が設けられ、
前記電気回路部は、前記第1導音空間と前記第2導音空間とのうちのいずれか一方の導音空間に配置され、
前記第1音孔及び前記第2音孔のうちの少なくとも一方の音孔を塞ぐように、前記第1導音空間の周波数特性と前記第2導音空間の周波数特性との差を低減する音響抵抗部が設けられ、
前記一方の音孔は、前記電気回路部が配置される前記一方の導音空間に連通することを特徴とするマイクロホンユニット。 - 前記音響抵抗部は、6kHz〜20kHzの周波数帯域の音に対して選択的に作用するように形成されていることを特徴とする請求項1に記載のマイクロホンユニット。
- 前記音響抵抗部は、前記第1音孔及び前記第2音孔を塞ぐように配置されることを特徴とする請求項1又は請求項2に記載のマイクロホンユニット。
- 前記音響抵抗部は一体であることを特徴とする請求項3に記載のマイクロホンユニット。
- 前記音響抵抗部の厚みは、前記第1音孔側及び前記第2音孔側のうち、前記電気回路部が配置される前記一方の導音空間に連通する前記一方の音孔側の方が他方の音孔側よりも厚いことを特徴とする請求項3又は4に記載のマイクロホンユニット。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008310502A JP5502313B2 (ja) | 2008-12-05 | 2008-12-05 | マイクロホンユニット |
US12/617,837 US8526656B2 (en) | 2008-12-05 | 2009-11-13 | Microphone unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008310502A JP5502313B2 (ja) | 2008-12-05 | 2008-12-05 | マイクロホンユニット |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010136131A JP2010136131A (ja) | 2010-06-17 |
JP5502313B2 true JP5502313B2 (ja) | 2014-05-28 |
Family
ID=42231092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008310502A Active JP5502313B2 (ja) | 2008-12-05 | 2008-12-05 | マイクロホンユニット |
Country Status (2)
Country | Link |
---|---|
US (1) | US8526656B2 (ja) |
JP (1) | JP5502313B2 (ja) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8351634B2 (en) * | 2008-11-26 | 2013-01-08 | Analog Devices, Inc. | Side-ported MEMS microphone assembly |
JP5340791B2 (ja) * | 2009-04-09 | 2013-11-13 | 株式会社オーディオテクニカ | 狭指向性マイクロホン |
US20120076321A1 (en) * | 2010-09-28 | 2012-03-29 | Bose Corporation | Single Microphone for Noise Rejection and Noise Measurement |
US9226052B2 (en) | 2013-01-22 | 2015-12-29 | Invensense, Inc. | Microphone system with non-orthogonally mounted microphone die |
KR101369464B1 (ko) | 2013-06-27 | 2014-03-06 | 주식회사 비에스이 | 멤스 마이크로폰 |
US10154330B2 (en) * | 2013-07-03 | 2018-12-11 | Harman International Industries, Incorporated | Gradient micro-electro-mechanical systems (MEMS) microphone |
US9338546B2 (en) * | 2013-12-16 | 2016-05-10 | Infineon Technologies Ag | Circuit assembly for processing an input signal, microphone assembly and method for following an input signal |
KR101619253B1 (ko) | 2014-11-26 | 2016-05-10 | 현대자동차 주식회사 | 마이크로폰 및 그 제조방법 |
JP6580356B2 (ja) * | 2015-03-25 | 2019-09-25 | 株式会社プリモ | 単一指向性memsマイクロホン |
KR101703628B1 (ko) * | 2015-09-25 | 2017-02-07 | 현대자동차 주식회사 | 마이크로폰 및 그 제조방법 |
US20170240418A1 (en) * | 2016-02-18 | 2017-08-24 | Knowles Electronics, Llc | Low-cost miniature mems vibration sensor |
US10045121B2 (en) * | 2016-04-29 | 2018-08-07 | Invensense, Inc. | Microelectromechanical systems (MEMS) microphone bias voltage |
US9961464B2 (en) | 2016-09-23 | 2018-05-01 | Apple Inc. | Pressure gradient microphone for measuring an acoustic characteristic of a loudspeaker |
CN112369004B (zh) * | 2018-07-16 | 2022-04-19 | Oppo广东移动通信有限公司 | 壳体组件以及电子设备 |
US10225645B1 (en) * | 2018-08-06 | 2019-03-05 | AAC Technologies Pte. Ltd. | Speaker box |
CN109660927B (zh) * | 2018-12-29 | 2024-04-12 | 华景科技无锡有限公司 | 一种麦克风芯片及麦克风 |
CN109889967B (zh) * | 2019-03-28 | 2020-10-30 | 百度在线网络技术(北京)有限公司 | 麦克风和智能语音设备 |
US11134337B2 (en) * | 2019-11-18 | 2021-09-28 | Bose Corporation | Variable port microphone |
TW202137778A (zh) * | 2021-06-02 | 2021-10-01 | 台灣立訊精密有限公司 | 收音裝置 |
TWI825718B (zh) * | 2022-05-12 | 2023-12-11 | 宏碁股份有限公司 | 收音系統、及電子裝置 |
Family Cites Families (17)
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US3876843A (en) * | 1973-01-02 | 1975-04-08 | Textron Inc | Directional hearing aid with variable directivity |
CA2032080C (en) | 1990-02-28 | 1996-07-23 | John Charles Baumhauer Jr. | Directional microphone assembly |
JP3062982B2 (ja) * | 1993-06-28 | 2000-07-12 | アツデン株式会社 | マイクロホンの音質調整機構 |
US5703957A (en) * | 1995-06-30 | 1997-12-30 | Lucent Technologies Inc. | Directional microphone assembly |
JP4022322B2 (ja) * | 1998-07-28 | 2007-12-19 | 株式会社オーディオテクニカ | 狭指向性コンデンサマイクロホン |
EP1142442A2 (en) * | 1999-01-07 | 2001-10-10 | Sarnoff Corporation | Hearing aid with large diaphragm microphone element including a printed circuit board |
JP3746217B2 (ja) * | 2001-09-28 | 2006-02-15 | 三菱電機株式会社 | 携帯型通信機器及び同機器用マイクロホン装置 |
US6928178B2 (en) * | 2002-12-17 | 2005-08-09 | Taiwan Carol Electronics Co., Ltd. | Condenser microphone and method for making the same |
DE102004011149B3 (de) * | 2004-03-08 | 2005-11-10 | Infineon Technologies Ag | Mikrophon und Verfahren zur Herstellung eines Mikrophons |
JP2005295278A (ja) * | 2004-03-31 | 2005-10-20 | Hosiden Corp | マイクロホン装置 |
JP4293969B2 (ja) * | 2004-10-08 | 2009-07-08 | 株式会社オーディオテクニカ | 狭指向性マイクロホン |
EP1867209A2 (en) * | 2005-04-06 | 2007-12-19 | Knowles Electronics, LLC | Transducer assembly and method of making same |
JP4403412B2 (ja) * | 2005-04-22 | 2010-01-27 | ソニー株式会社 | マイクロホン |
TWI333264B (en) * | 2007-01-10 | 2010-11-11 | Advanced Semiconductor Eng | Packaging structure and method of mems microphone |
JP4293378B2 (ja) * | 2007-04-04 | 2009-07-08 | 株式会社船井電機新応用技術研究所 | マイクロフォンユニット、及び、接話型の音声入力装置、並びに、情報処理システム |
JP2008278476A (ja) * | 2007-04-05 | 2008-11-13 | Yamaha Corp | コンデンサマイク装置のsn比改善方法およびコンデンサマイク装置並びにコンデンサマイク装置搭載機器 |
JP5072412B2 (ja) * | 2007-04-06 | 2012-11-14 | 株式会社オーディオテクニカ | 狭指向性マイクロホン用音響管、狭指向性マイクロホン、及び狭指向性マイクロホン用音響管の製造方法 |
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2008
- 2008-12-05 JP JP2008310502A patent/JP5502313B2/ja active Active
-
2009
- 2009-11-13 US US12/617,837 patent/US8526656B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20100142742A1 (en) | 2010-06-10 |
JP2010136131A (ja) | 2010-06-17 |
US8526656B2 (en) | 2013-09-03 |
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