JP2005295278A - Microphone device - Google Patents

Microphone device Download PDF

Info

Publication number
JP2005295278A
JP2005295278A JP2004108462A JP2004108462A JP2005295278A JP 2005295278 A JP2005295278 A JP 2005295278A JP 2004108462 A JP2004108462 A JP 2004108462A JP 2004108462 A JP2004108462 A JP 2004108462A JP 2005295278 A JP2005295278 A JP 2005295278A
Authority
JP
Japan
Prior art keywords
sound
microphone
formed
sound hole
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.)
Pending
Application number
JP2004108462A
Other languages
Japanese (ja)
Inventor
Shin Fujimoto
Tomohiko Kamimura
Hiroyoshi Shinozuka
Mutsuharu Tsuruhara
智彦 上村
寛悦 篠塚
伸 藤本
睦治 鶴原
Original Assignee
Hosiden Corp
ホシデン株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hosiden Corp, ホシデン株式会社 filed Critical Hosiden Corp
Priority to JP2004108462A priority Critical patent/JP2005295278A/en
Publication of JP2005295278A publication Critical patent/JP2005295278A/en
Application status is Pending legal-status Critical

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To reasonably constitute a microphone device that can be made small and has single directivity. <P>SOLUTION: A thin and bidirectional microphone M is provided in a case C, a first sound hole H1 and a second sound hole H2 are formed in the front wall 11 of the case C, a first sound guiding space S1 for guiding a sound signal from the first sound hole H1 to the front face F of the microphone M and a second sound guiding space S2 for guiding a sound signal from the second sound hole H2 to the rear face R of the microphone M are formed in the case C, and a sound pressure difference between the front face F and the rear face R of the microphone is created by providing a sound resistance material D in the second sound guiding space S2 to enhance sensitivity. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a microphone device that includes a microphone inside a case and is configured to guide an acoustic signal from a sound hole formed in the case to the microphone.

  As a technique related to the microphone device configured as described above, there is one described in Patent Document 1. In this Patent Document 1, an opening / closing body (case of the present invention) is supported on a mobile phone via a hinge so as to be opened and closed, and a bidirectional microphone is disposed inside the opening / closing body. An inner sound hole is formed on the outer wall, an outer sound hole is formed on the outer wall, a sound path connecting the inner sound hole and the front sound hole of the microphone is formed inside the opening / closing body, and the outer sound hole and the rear sound hole of the microphone are formed. The sound path that connects In this microphone device, sound collection with a large S / N ratio is realized from the pressure difference between the sound waves that enter the opening / closing body through the two sound holes.

Japanese Patent Laid-Open No. 2003-110676 (paragraph numbers [0018] to [0023], FIG. 4)

  Recently, an in-vehicle information system that transforms a car from a simple moving space into a communication space has attracted attention, and in order to realize this communication space, real-time traffic information can be obtained by installing a computer connected to the Internet in the car, Acquisition of navigation information, automatic notification at the time of theft, etc. are being realized. Moreover, in order to realize such a communication space, a microphone with good directivity is desired.

  As a specific form of use of the microphone, in order to catch the voice from the driver and passengers in the passenger seat, it can be considered to be incorporated in the map light, the rearview mirror, the handle part or the front panel part in the vehicle. The microphone provided in such a place requires a unidirectional microphone to acquire sound at relatively distant positions. However, the unidirectional microphone has a disadvantage in that thinness and size reduction are restricted. There is.

  When an electret type microphone is considered as a microphone that can be miniaturized, there are a bidirectional type and a unidirectional type described in Patent Document 1. Compared with the bi-directional type and the uni-directional type, the bi-directional type is easy to downsize and inexpensive. From such a viewpoint, it is desired to produce a unidirectional microphone device using a bidirectional microphone.

  An object of the present invention is to rationally configure a microphone device that can be miniaturized and is unidirectional.

A feature of the present invention is a microphone device that includes a microphone inside a case and is configured to guide an acoustic signal from a sound hole formed in the case to the microphone.
The microphone is configured as a bidirectional type that acquires acoustic signals from both directions along the axial direction, and a first sound hole and a second sound hole are formed as the sound holes in the same wall portion of the case. A first sound introduction space for guiding an acoustic signal from the first sound hole to the front surface of the microphone, and a second sound guide for guiding the acoustic signal from the second sound hole to the rear surface of the microphone. A space is formed, and an acoustic resistance material is provided in one or both of the first sound introduction space and the second sound introduction space.

  With this configuration, the acoustic signal guided to one of the first sound guide space and the second sound guide space is delayed by the acoustic resistance material, so that the front surface of the microphone is passed through the first sound hole and the first sound guide space. It is possible to create a sound pressure difference between the acoustic signal guided to the sound and the acoustic signal guided from the second sound hole to the rear surface of the microphone through the second sound guiding space, and acquire the acoustic signal with the bidirectional microphone. Become. In particular, since the first sound hole and the second sound hole are formed in the same wall portion of the second sound hole and the case, directivity toward the direction in which each sound hole is opened is obtained. As a result, a unidirectional microphone device that can be miniaturized using a bidirectional microphone that is inexpensive and easy to manufacture is rationally constructed.

  According to the present invention, the case includes a front housing and a rear housing, and the first sound hole and the second sound hole are formed in a front wall portion of the front housing in a posture orthogonal to the axis. A wall body is formed on the inner surface side of the front wall portion so as to isolate the space connected to the first sound hole and the space connected to the second sound hole, and is surrounded by the wall body, the front housing, and the rear housing. The second sound guide space may be formed by a space to be formed.

  With this configuration, the second sound conducting space is formed by the space surrounded by the wall body, the front housing, and the rear housing only by forming the wall body in the front housing and providing the rear housing. That is, it is possible to guide the acoustic signal from the second sound hole to the rear surface of the microphone by setting the structure of the front housing without attaching a special member for forming the second sound guide space.

  In the present invention, a partition wall in a posture orthogonal to the shaft core is disposed inside the front housing so as to isolate the front housing and the rear housing, and the first space is surrounded by the space surrounded by the partition wall and the front housing. A sound guide space may be formed.

  With this configuration, it is possible to form the first sound introduction space surrounded by the partition wall and the front housing. In other words, when a bidirectional microphone is provided inside the case, the microphone is formed to form the first sound introduction space on the front side of the microphone and the second sound introduction space on the rear side of the microphone. Although it will arrange | position in the intermediate position in the front-back direction of a case, it will become possible to create a 1st sound introduction space and to guide the acoustic signal from a 1st sound hole to the front surface of a microphone by arrange | positioning a partition. .

  In the present invention, the microphone may be supported by a substrate, and the substrate may be disposed at a position parallel to the partition wall.

  With this configuration, by disposing the substrate in a position parallel to the partition wall, the acoustic signal is not hindered even if the substrate is disposed on the side exposed to the first sound guide space.

  In the present invention, the microphone may be configured as an electret type in which a diaphragm and an impedance conversion element are housed in a disk-shaped capsule having acoustic openings formed on the front side and the rear side.

  With this configuration, the microphone device as a whole can be reduced in size by using a microphone configured as a disk-shaped capsule.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, a microphone device is configured by housing a bidirectional microphone M in a case C. In this microphone device, an acoustic signal from the first sound hole H1 formed in the case C is guided to the front surface F side of the microphone M by the first sound introduction space S1, and an acoustic signal from the second sound hole H2 formed in the case C is provided. Is guided to the rear surface R side of the microphone M by the second sound guide space S2, and the sound guided to the second sound guide space S2 by the acoustic resistance material D provided in the second sound guide space S2. The configuration is such that sound is acquired by delaying the signal and creating a sound pressure difference between the front surface F and the rear surface R of the microphone M. In the present embodiment, the acoustic resistance material D is provided in the second sound introduction space S2, but the acoustic resistance material D may be provided in the first sound introduction space S1. In particular, in the present invention, the acoustic resistance material D may be provided in both the first sound guide space S1 and the second sound guide space S2 (all the spaces of the first sound guide space S1 and the second sound guide space S2). In addition, the acoustic resistance material D may be provided in a state of being filled in), and when the acoustic resistance material D is provided in the first sound guide space S1, it is disposed in the vicinity of the first sound hole H1 or on the front side of the microphone M. In the case where the second sound introduction space S2 is provided with the acoustic resistance material D, it can be arranged in the vicinity of the second sound hole H2 in addition to the position shown in the drawing.

  The microphone device of the present invention is small and unidirectional in order to catch a voice from a driver or a passenger in a passenger seat by being incorporated in a map light, a rearview mirror or the like provided in a car interior. A specific structure will be described below.

  As shown in FIG. 3, the bidirectional microphone M has a thin disk shape in which a plurality of acoustic apertures Ma are formed on a front surface F and a rear surface R, and an impedance such as a diaphragm and an FET inside a metal capsule Mb. It is configured as an electret type with a built-in conversion element (not shown), and is configured to satisfactorily capture acoustic signals from both the front and back sides along the axis X passing through the center position of the capsule Mb. The microphone M is supported on one end of the substrate 1. The substrate 1 is formed by forming a printed wiring on an insulating material such as glass epoxy, and an amplifier circuit that amplifies a signal from the microphone M by fixing a chip-type element 2 to the printed wiring by soldering. The other end of the substrate 1 is connected to a cable 3 for extracting a signal amplified by the amplifier circuit. The substrate 1 does not necessarily have an amplifier circuit, and has a structure in which only a printed wiring for taking out a signal from the microphone M is formed, or a structure in which a circuit for sending a signal wirelessly is provided in addition to the amplifier circuit. It may be.

  The case C includes a resin-made front housing 10 integrally formed with a rectangular front wall portion 11 in which the first sound hole H1 and the second sound hole H2 are formed, and a side wall portion 12 surrounding the rectangular front wall portion 11. The rear housing 20 is made of a resin and has a plate shape that closes the rear opening of the front housing 10.

  That is, as shown in FIGS. 4 and 5, the front housing 10 has the first sound hole H1 and the second sound hole H2 formed in a slit shape at the end position of the front wall portion 11, and this front wall. A first holder 13 that supports the front side of the microphone M so as to contact the inner side of the part 11 is integrally formed. The first holder 13 is formed in a ring shape having an open portion 13A where a part of the first sound hole H1 is opened. On the side of the second sound hole H2 from the first holder 13, an arcuate wall body 14 is provided in the front housing 10 so as to isolate the space connected to the first sound hole H1 and the space connected to the second sound hole H2. And is formed integrally. A cable guide portion 15 that allows the insertion of the cable 3 is formed at the end of the side wall portion 12.

  The rear housing 20 is formed with a rear wall portion 21, and a second holder 22 is integrally formed on the inner surface side of the rear wall portion 21 so as to be in contact with the rear surface side of the microphone M. Yes. The second holder 22 is formed in a ring shape having an open portion 22A that is partially open on the second sound hole H2. Thereafter, a pair of positioning portions 23 are projected from the inner surface side of the housing 20. Thereafter, a cable guide portion 24 that allows the insertion of the cable 3 is formed at the end of the housing 20.

  A first intermediate member A and a second intermediate member B are accommodated in the case C. That is, the first intermediate member A includes the partition wall 31 that forms a space that is continuous with the first sound hole H1 and the open portion 13A of the first holder 13, and the ring-shaped portion 32 that is fitted around the first holder 13. The opening portion 32 </ b> A is formed at a site corresponding to the opening portion 13 </ b> A of the first holder 13 in the ring-shaped portion 32 of the first intermediate member A. In addition, the second intermediate member B is a flexible material in which a ring-shaped portion 35 that comes into contact with the second holder 22 and a guide portion 36 that has an open portion 36A that opens to the second sound hole H2 side are integrated. It is made of resin.

  Since the case C and the microphone M are thus formed, when the microphone device of the present invention is assembled, the first holder 13 is set after the first intermediate member A is set on the inner surface side of the front housing 10. Then, the microphone M is set in a state where the front surface F is in contact therewith. The partition wall 31 formed on the intermediate member A in a state where the intermediate member A is set as described above is in a posture parallel to the front wall portion 11 (attitude orthogonal to the axis X). Next, after setting the second intermediate member B on the inner surface side of the rear housing 20 and setting the acoustic resistance material D made of a foamed resin pad, the rear housing 20 is fitted into the front housing 10. The cloth 40 is closed and fixed with an adhesive or the like, and a cloth 40 having a large number of fine openings (gap between fibers) through which an acoustic signal passes is adhered and fixed to the outer surface of the front wall portion 11. In this state where the rear housing 20 is fixed, the acoustic resistance material D is sandwiched between the second intermediate member B and the rear wall portion 21 of the rear housing 20 and compressed, so that the inside of the second sound guide space S2 The acoustic resistance material D can be filled without any gaps.

  In the assembled state, the case C is a space closed by the front wall portion 11, the rear wall portion 21, and the four side wall portions 12 (the first sound hole H1 and the second sound hole H2 are open). And the position of the microphone M is determined by sandwiching the microphone M between the first holder 13 and the second holder 22 from the front-rear direction (direction along the axis X). Further, the edge portion of the substrate 1 is sandwiched between the edge portion of the partition wall 31 of the first intermediate member A and the pair of positioning portions 23 formed in the rear housing 20, whereby the first intermediate member A and The position with respect to the substrate 1 is determined, and the partition wall 31 of the first intermediate member A and the substrate 1 are brought into contact in a parallel posture and supported in a stable state. Further, the cable 3 connected to the substrate 1 is sandwiched between the cable guide portion 15 of the front housing 10 and the cable guide portion 24 of the rear housing 20 so that the tension from the cable 3 is not applied to the substrate 1. Yes.

  In this microphone device, the first wall that extends from the first sound hole H <b> 1 to the front surface F of the microphone M is surrounded by the front wall portion 11 and the side wall portion 12 of the front housing 10 and the partition wall 31 of the first intermediate member A. One sound guide space S1 is formed and is a part surrounded by the side wall portion 12 and the wall body 14 of the front housing 10, the rear wall portion 21 of the rear housing 20, and the guide portion 36 of the second intermediate member B. The second sound introduction space S2 connected from the second sound hole H1 to the rear surface R of the microphone M is formed, and the acoustic resistance material D is provided in a form of filling the second sound introduction space S2.

  In this microphone device, an acoustic signal from the direction in which each of the first sound hole H1 and the second sound hole H2 is opened is taken into the case C from the first sound hole H1 and the second sound hole H2, The acoustic signal from the first sound hole H1 is guided to the front surface F of the microphone M via the first sound guiding space S1, and the acoustic signal from the second sound guiding space S2 is transmitted to the microphone M via the second sound guiding space S2. When it is guided to the rear surface R, it is delayed by contacting the acoustic resistance material D, and an acoustic signal is transmitted to the rear surface R of the microphone M at this delayed timing, so that it is added to the front surface F of the microphone M and the rear surface R of the microphone M. A sound pressure difference is created in the sound signal to be generated, and the sound signal can be converted into an electric signal with high sensitivity.

  Thus, the microphone device of the present invention accommodates the bidirectional microphone M with respect to the case C, but the first sound hole H1 and the second sound hole H2 formed in the front wall portion 11 of the case C. In addition to being able to be used as a unidirectional microphone with high sensitivity in the opening direction, a thin and inexpensive microphone can be used as the bidirectional microphone M, thereby reducing the overall size of the apparatus. Not only is it possible, but it can also be manufactured at low cost.

[Another embodiment]
In addition to the above-described embodiments, the present invention may be provided in a recording device that records audio in a mobile phone or a semiconductor memory. Further, the first sound introduction space S1 and the second sound introduction space S2 formed inside the case C can be formed only by the members constituting the case C, and the substrate 1 that supports the microphone M is formed as described above. You may comprise so that it may serve as a partition.

Perspective view of microphone device Cross section of microphone device A perspective view showing the front side and the rear side of the microphone Sectional drawing which shows the structure of each part of a microphone apparatus Disassembled perspective view of microphone device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Board | substrate 10 Front housing 11 Front wall part 14 Wall body 20 Rear housing 31 Bulkhead C Case D Acoustic resistance material F Front surface of microphone R Rear surface of microphone M Microphone Ma Acoustic opening Mb Capsule X Axis core H1 First sound hole / sound hole H2 Second sound hole / sound hole S1 First sound introduction space S2 Second sound introduction space

Claims (5)

  1. A microphone device provided with a microphone inside the case and configured to guide an acoustic signal from a sound hole formed in the case to the microphone,
    The microphone is configured as a bidirectional type that acquires acoustic signals from both directions along the axial direction, and a first sound hole and a second sound hole are formed as the sound holes in the same wall portion of the case. A first sound introduction space for guiding an acoustic signal from the first sound hole to the front surface of the microphone, and a second sound guide for guiding the acoustic signal from the second sound hole to the rear surface of the microphone. A microphone device in which a space is formed and an acoustic resistance material is provided in one or both of the first sound introduction space and the second sound introduction space.
  2.   The case includes a front housing and a rear housing, and the first sound hole and the second sound hole are formed in a front wall portion of the front housing in a posture orthogonal to the shaft core. A wall body is formed on the inner surface side of the wall portion so as to separate the space connected to the first sound hole and the space connected to the second sound hole, and the wall is surrounded by the space surrounded by the front housing and the rear housing. The microphone device according to claim 1, wherein the second sound introduction space is formed.
  3.   A partition wall in a posture orthogonal to the shaft core is disposed inside the front housing so as to isolate the front housing and the rear housing, and the first sound introduction space is defined by a space surrounded by the partition wall and the front housing. The microphone device according to claim 2, wherein the microphone device is formed.
  4.   The microphone device according to claim 3, wherein the microphone is supported by a substrate, and the substrate is disposed at a position parallel to the partition wall.
  5.   The said microphone is comprised in the electret type | mold which accommodated the diaphragm and the impedance conversion element in the inside of the disk shaped capsule which formed the acoustic opening in the said front side and the back side. The microphone device according to item.
JP2004108462A 2004-03-31 2004-03-31 Microphone device Pending JP2005295278A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004108462A JP2005295278A (en) 2004-03-31 2004-03-31 Microphone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004108462A JP2005295278A (en) 2004-03-31 2004-03-31 Microphone device

Publications (1)

Publication Number Publication Date
JP2005295278A true JP2005295278A (en) 2005-10-20

Family

ID=35327708

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004108462A Pending JP2005295278A (en) 2004-03-31 2004-03-31 Microphone device

Country Status (1)

Country Link
JP (1) JP2005295278A (en)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007306125A (en) * 2006-05-09 2007-11-22 Matsushita Electric Ind Co Ltd Mems microphone of card type
JP2008306292A (en) * 2007-06-05 2008-12-18 Sharp Corp Microphone apparatus and electronic equipment
JP2009005071A (en) * 2007-06-21 2009-01-08 Funai Electric Advanced Applied Technology Research Institute Inc Voice input/output device and speech apparatus
JP2009050031A (en) * 2008-12-01 2009-03-05 Funai Electric Advanced Applied Technology Research Institute Inc Microphone unit, close-talking voice input device, and information processing system
WO2009034786A1 (en) * 2007-09-10 2009-03-19 Hosiden Corporation Condenser microphone
JP2009118455A (en) * 2007-11-05 2009-05-28 Ind Technol Res Inst Sensor
JP2009118503A (en) * 2008-12-25 2009-05-28 Funai Electric Advanced Applied Technology Research Institute Inc Voice input device, manufacturing method therefor, and information processing system
WO2009099091A1 (en) * 2008-02-08 2009-08-13 Funai Electric Co., Ltd. Microphone unit
WO2009099168A1 (en) * 2008-02-08 2009-08-13 Funai Electric Co., Ltd. Microphone unit
WO2009119852A1 (en) * 2008-03-27 2009-10-01 株式会社船井電機新応用技術研究所 Microphone unit, voice input device of close-talking type, information processing system, and method for manufacturing microphone unit
WO2010013603A1 (en) * 2008-07-30 2010-02-04 船井電機株式会社 Microphone unit and cellular phone provided with same
WO2010013602A1 (en) * 2008-07-30 2010-02-04 船井電機株式会社 Differential microphone
JP2010057052A (en) * 2008-08-29 2010-03-11 Funai Electric Advanced Applied Technology Research Institute Inc Microphone unit
EP2194730A2 (en) 2008-12-05 2010-06-09 Funai Electric Co., Ltd. Voice input apparatus
US20100142742A1 (en) * 2008-12-05 2010-06-10 Fuminori Tanaka Microphone unit
WO2010067834A1 (en) * 2008-12-12 2010-06-17 船井電機株式会社 Microphone unit and voice input device using same
JP2010136133A (en) * 2008-12-05 2010-06-17 Funai Electric Advanced Applied Technology Research Institute Inc Microphone unit
WO2010090070A1 (en) * 2009-02-05 2010-08-12 船井電機株式会社 Microphone unit
JP2010212904A (en) * 2009-03-09 2010-09-24 Funai Electric Co Ltd Microphone unit
JP2011015107A (en) * 2009-07-01 2011-01-20 Funai Electric Co Ltd Microphone unit
WO2011093157A1 (en) * 2010-01-27 2011-08-04 船井電機株式会社 Microphone unit and audio input device provided therewith
WO2012017795A1 (en) 2010-08-02 2012-02-09 船井電機株式会社 Microphone unit
WO2012017794A1 (en) 2010-08-02 2012-02-09 船井電機株式会社 Microphone unit
US8180082B2 (en) 2007-04-04 2012-05-15 Funai Electric Advanced Applied Technology Research Institute Inc. Microphone unit, close-talking voice input device, information processing system, and method of manufacturing microphone unit
CN102742299A (en) * 2009-12-25 2012-10-17 船井电机株式会社 Microphone unit and voice input device provided therewith
CN102934464A (en) * 2010-06-01 2013-02-13 船井电机株式会社 Microphone unit and audio input device provided with same
EP2611212A2 (en) 2011-12-27 2013-07-03 Funai Electric Co., Ltd. Microphone unit
JP2016184794A (en) * 2015-03-25 2016-10-20 株式会社プリモ Unidirectional MEMS microphone

Cited By (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4657974B2 (en) * 2006-05-09 2011-03-23 パナソニック株式会社 Card type MEMS microphone
JP2007306125A (en) * 2006-05-09 2007-11-22 Matsushita Electric Ind Co Ltd Mems microphone of card type
US8180082B2 (en) 2007-04-04 2012-05-15 Funai Electric Advanced Applied Technology Research Institute Inc. Microphone unit, close-talking voice input device, information processing system, and method of manufacturing microphone unit
JP2008306292A (en) * 2007-06-05 2008-12-18 Sharp Corp Microphone apparatus and electronic equipment
JP2009005071A (en) * 2007-06-21 2009-01-08 Funai Electric Advanced Applied Technology Research Institute Inc Voice input/output device and speech apparatus
WO2009034786A1 (en) * 2007-09-10 2009-03-19 Hosiden Corporation Condenser microphone
JP2009118455A (en) * 2007-11-05 2009-05-28 Ind Technol Res Inst Sensor
US8035402B2 (en) 2007-11-05 2011-10-11 Industrial Technology Research Institute Sensor
US8649545B2 (en) 2008-02-08 2014-02-11 Funai Electric Co. Ltd. Microphone unit
WO2009099168A1 (en) * 2008-02-08 2009-08-13 Funai Electric Co., Ltd. Microphone unit
JP2009188943A (en) * 2008-02-08 2009-08-20 Funai Electric Advanced Applied Technology Research Institute Inc Microphone unit
WO2009099091A1 (en) * 2008-02-08 2009-08-13 Funai Electric Co., Ltd. Microphone unit
US8605930B2 (en) 2008-03-27 2013-12-10 Funai Electric Co., Ltd. Microphone unit, close-talking type speech input device, information processing system, and method for manufacturing microphone unit
WO2009119852A1 (en) * 2008-03-27 2009-10-01 株式会社船井電機新応用技術研究所 Microphone unit, voice input device of close-talking type, information processing system, and method for manufacturing microphone unit
JP2009239631A (en) * 2008-03-27 2009-10-15 Funai Electric Advanced Applied Technology Research Institute Inc Microphone unit, close-talking voice input device, information processing system, and manufacturing method for microphone unit
WO2010013602A1 (en) * 2008-07-30 2010-02-04 船井電機株式会社 Differential microphone
JP2010034991A (en) * 2008-07-30 2010-02-12 Funai Electric Advanced Applied Technology Research Institute Inc Microphone unit
WO2010013603A1 (en) * 2008-07-30 2010-02-04 船井電機株式会社 Microphone unit and cellular phone provided with same
CN102113344B (en) * 2008-07-30 2016-01-27 船井电机株式会社 Microphone unit and there is the mobile phone of this microphone unit
US8457342B2 (en) 2008-07-30 2013-06-04 Funai Electric Co., Ltd. Differential microphone
JP2010034990A (en) * 2008-07-30 2010-02-12 Funai Electric Advanced Applied Technology Research Institute Inc Differential microphone unit
US8565465B2 (en) 2008-07-30 2013-10-22 Funai Electric Co., Ltd. Microphone unit and mobile phone provided with the same
JP2010057052A (en) * 2008-08-29 2010-03-11 Funai Electric Advanced Applied Technology Research Institute Inc Microphone unit
JP2009050031A (en) * 2008-12-01 2009-03-05 Funai Electric Advanced Applied Technology Research Institute Inc Microphone unit, close-talking voice input device, and information processing system
JP2010136133A (en) * 2008-12-05 2010-06-17 Funai Electric Advanced Applied Technology Research Institute Inc Microphone unit
JP2010136131A (en) * 2008-12-05 2010-06-17 Funai Electric Advanced Applied Technology Research Institute Inc Microphone unit
US8526656B2 (en) 2008-12-05 2013-09-03 Funai Electric Co., Ltd. Microphone unit
US8948432B2 (en) 2008-12-05 2015-02-03 Funai Electric Co., Ltd. Microphone unit
EP2194730A2 (en) 2008-12-05 2010-06-09 Funai Electric Co., Ltd. Voice input apparatus
JP2010136132A (en) * 2008-12-05 2010-06-17 Funai Electric Advanced Applied Technology Research Institute Inc Voice input apparatus
TWI508574B (en) * 2008-12-05 2015-11-11 Funai Electric Co Microphone unit
US20100142743A1 (en) * 2008-12-05 2010-06-10 Fuminori Tanaka Voice input apparatus
US8433089B2 (en) 2008-12-05 2013-04-30 Funai Electric Co., Ltd. Voice input apparatus
US20100142742A1 (en) * 2008-12-05 2010-06-10 Fuminori Tanaka Microphone unit
WO2010067834A1 (en) * 2008-12-12 2010-06-17 船井電機株式会社 Microphone unit and voice input device using same
JP2010141720A (en) * 2008-12-12 2010-06-24 Funai Electric Co Ltd Microphone unit and voice input device equipped with the same
US8823115B2 (en) 2008-12-12 2014-09-02 Funai Electric Co., Ltd. Microphone unit and voice input device using same
JP2009118503A (en) * 2008-12-25 2009-05-28 Funai Electric Advanced Applied Technology Research Institute Inc Voice input device, manufacturing method therefor, and information processing system
WO2010090070A1 (en) * 2009-02-05 2010-08-12 船井電機株式会社 Microphone unit
CN102308593A (en) * 2009-02-05 2012-01-04 船井电机株式会社 Microphone unit
JP2010183312A (en) * 2009-02-05 2010-08-19 Funai Electric Co Ltd Microphone unit
JP2010212904A (en) * 2009-03-09 2010-09-24 Funai Electric Co Ltd Microphone unit
JP2011015107A (en) * 2009-07-01 2011-01-20 Funai Electric Co Ltd Microphone unit
US8824719B2 (en) 2009-12-25 2014-09-02 Funai Electric Co., Ltd. Microphone unit and voice input device comprising same
CN102742299A (en) * 2009-12-25 2012-10-17 船井电机株式会社 Microphone unit and voice input device provided therewith
CN102742299B (en) * 2009-12-25 2015-11-25 船井电机株式会社 Microphone unit and comprise the speech input device of this microphone unit
WO2011093157A1 (en) * 2010-01-27 2011-08-04 船井電機株式会社 Microphone unit and audio input device provided therewith
JP2011155450A (en) * 2010-01-27 2011-08-11 Funai Electric Co Ltd Microphone unit, and audio input device provided therewith
US8989422B2 (en) 2010-01-27 2015-03-24 Funai Electric Co., Ltd. Microphone unit and voice input device comprising same
CN105307080A (en) * 2010-06-01 2016-02-03 船井电机株式会社 Microphone unit and sound input device incorporating same
US8861764B2 (en) 2010-06-01 2014-10-14 Funai Electric Co., Ltd. Microphone unit and sound input device incorporating same
CN102934464A (en) * 2010-06-01 2013-02-13 船井电机株式会社 Microphone unit and audio input device provided with same
CN102934464B (en) * 2010-06-01 2015-11-25 船井电机株式会社 Microphone unit and be provided with the acoustic input dephonoprojectoscope of this microphone unit
CN105307080B (en) * 2010-06-01 2018-10-16 船井电机株式会社 Microphone unit and acoustic input dephonoprojectoscope equipped with the microphone unit
WO2012017795A1 (en) 2010-08-02 2012-02-09 船井電機株式会社 Microphone unit
WO2012017794A1 (en) 2010-08-02 2012-02-09 船井電機株式会社 Microphone unit
US9351062B2 (en) 2010-08-02 2016-05-24 Funai Electric Co., Ltd. Microphone unit
EP2611212A2 (en) 2011-12-27 2013-07-03 Funai Electric Co., Ltd. Microphone unit
JP2016184794A (en) * 2015-03-25 2016-10-20 株式会社プリモ Unidirectional MEMS microphone

Similar Documents

Publication Publication Date Title
US10257610B2 (en) Microphone module with sound pipe
JP5575556B2 (en) earphone
DE60217215T2 (en) Cylindrical microphone with an electret arrangement in the end cover
US7072482B2 (en) Microphone with improved sound inlet port
CA2387125C (en) Vehicle accessory microphone
US8682005B2 (en) Vehicle accessory microphone
US8532722B2 (en) Folded flex assembly for personal media device
US20130251182A1 (en) Audio port configuration for compact electronic devices
US7369674B2 (en) Acoustic apparatus
EP1970792B1 (en) Portable terminal with a large display
KR100748796B1 (en) Electro-optical device and electronic apparatus
DE102012220096B4 (en) Outside noise introductory earphone
US9975459B2 (en) Headrest device and sound collecting device
US8027502B2 (en) Speaker device and mobile phone
EP2352311B1 (en) Microphone
US7263194B2 (en) Hearing device
DE60021269T2 (en) Motor vehicle system with roof sky as flying membrane
US20100183174A1 (en) Microphone package
US7616768B2 (en) Vehicle accessory microphone having mechanism for reducing line-induced noise
EP1301012B1 (en) Mobile communication device with a flat speaker placed in the housing and an additional speaker being arranged in a two-way system with the flat speaker
US20080058002A1 (en) Electron device
EP2198630B1 (en) Pcb with embedded speaker assembly
EP2779684B1 (en) Bone-conduction speaker unit
KR20060087464A (en) Miniature multi-loudspeaker module
JP2006222969A (en) Vehicular communication

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20051213

A977 Report on retrieval

Effective date: 20070427

Free format text: JAPANESE INTERMEDIATE CODE: A971007

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070510

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20070913