WO2017116023A1 - Écouteur de protection contre le bruit ayant un filtre acoustique - Google Patents

Écouteur de protection contre le bruit ayant un filtre acoustique Download PDF

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Publication number
WO2017116023A1
WO2017116023A1 PCT/KR2016/013990 KR2016013990W WO2017116023A1 WO 2017116023 A1 WO2017116023 A1 WO 2017116023A1 KR 2016013990 W KR2016013990 W KR 2016013990W WO 2017116023 A1 WO2017116023 A1 WO 2017116023A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
earset
acoustic filter
driver unit
filter
Prior art date
Application number
PCT/KR2016/013990
Other languages
English (en)
Korean (ko)
Inventor
김은동
Original Assignee
주식회사 오르페오사운드웍스
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
Priority claimed from KR1020160009804A external-priority patent/KR101756653B1/ko
Application filed by 주식회사 오르페오사운드웍스 filed Critical 주식회사 오르페오사운드웍스
Priority to JP2018532211A priority Critical patent/JP6649488B2/ja
Priority to DE112016006136.6T priority patent/DE112016006136T5/de
Priority to CN201680077213.1A priority patent/CN108476353B/zh
Priority to US16/065,808 priority patent/US10764673B2/en
Publication of WO2017116023A1 publication Critical patent/WO2017116023A1/fr

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/02—Transducers using more than one principle simultaneously
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the present invention relates to noise shielding technology. More specifically, the present invention relates to a noise shield earset having an acoustic filter that completely shields external noise while maintaining the same air pressure inside and outside the earset.
  • Earsets are typically in-ear earphones, and are sound equipment that listens to sound while being inserted into the auricle and the ear canal.
  • a pressure difference occurs between the inside of the earset (human pressure) and the outside (atmospheric pressure). That is, as the ear tip formed on the ear set is in close contact with the inner ear canal wall, the pressure difference between the inside and the outside of the ear set is generated.
  • a back hole exists at the rear of the dynamic driver unit and the balanced armature driver unit.
  • This backhaul serves to keep the air pressure inside and outside the earset the same. In this way, the diaphragm may be vibrated at the correct position.
  • dampers having different mesh densities different pressure differentials are generated during the operation of the diaphragm, which may be used for tuning.
  • this backhaul has a problem that acts as a path for the external noise input. Where it is necessary to completely shield the outside noise, for example, to use in an airport, etc., the external noise must be completely shielded, but due to the presence of a backhaul formed in the rear of the driver unit, there is a problem that it is difficult to completely shield the outside noise.
  • the earset integrating the speaker and the microphone, the body to perform the function of transmitting sound to the ear canal and to collect the user voice in one body (Body).
  • the speaker is directed toward the ear canal for sound transmission, and the microphone is exposed to the outside of the auricle to collect the user's voice.
  • An object of the present invention is to provide a noise shielding earset having an acoustic filter to cover the back hole formed in the driver unit with an acoustic filter to maintain the same air pressure inside and outside the earset and to completely shield external noise.
  • Noise shielding earset having an acoustic filter of the present invention for achieving the above object, preferably a driver unit for generating sound; And an acoustic filter covering the backhaul formed in the driver unit to allow air to flow and shield external noise.
  • the acoustic filter may include a filter layer in which a through hole and a sound movement path are selectively formed; And a plate having a through hole selectively communicating with the through hole and the sound movement path, wherein the filter layer and the plate are repeatedly stacked with each other, and the through hole of the plate and the through hole or sound movement path of the filter layer communicate with each other.
  • the through hole formed in the plate adjacent to the filter layer is preferably communicated at different ends of the sound movement path of the filter layer, and the sound movement path of the neighboring filter layer is thinner and longer (high sound component does not pass and bass To pass only the ingredients).
  • a sound absorbing material may be filled in the sound movement path, and the sound absorbing material may use any one or more of polyester, glass fiber, mineral wool, glass wool, and polyurethane.
  • the high and mid ranges are removed through the acoustic filter, and only the low range is substantially passed below 100 Hz.
  • the low pass is filtered, and thus the air passes through, but the external noise is perfect. Can be shielded.
  • the filtering is performed to remove the high range and the low range to reduce the amount of data when transmitting from Bluetooth, etc., thereby preventing the influence of noise generated inside the earset.
  • FIG. 1 is a cross-sectional view of a noise shield earset having an acoustic filter according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of an acoustic filter according to an embodiment of the present invention.
  • FIG 3 is an enlarged view of an acoustic filter according to an exemplary embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of the dynamic driver unit applied to the present invention.
  • FIG. 5 is a cross-sectional view of an earset having a dynamic driver unit and an in-ear microphone as another application example of the present invention.
  • FIG. 6 is a cross-sectional view of a noise shield earset having an acoustic filter according to another embodiment of the present invention.
  • FIG. 7 is a cross-sectional view of the balanced armature driver unit applied in the present invention.
  • ⁇ means means a unit that processes at least one function or operation, Each of these may be implemented by software or hardware, or a combination thereof.
  • FIG. 1 is a cross-sectional view of a noise shield earset having an acoustic filter according to an embodiment of the present invention.
  • an earset to which a dynamic driver unit is applied covers the dynamic driver unit 1 and the backhaul formed at the rear of the dynamic driver unit 1.
  • the noise shielding earset of the present invention configured as described above uses the acoustic filter 2 covering the backhaul to maintain the same air pressure inside and outside the earset, and to shield external noise introduced through the backhaul.
  • FIG. 2 is an exploded perspective view of an acoustic filter according to an embodiment of the present invention.
  • the acoustic filter 2 of the present invention selectively communicates with the filter layers 2b, 2d and 2f on which the through and sound movement paths l are selectively formed, and the through and sound movement paths l. It includes a plate (2a, 2c, 2e) is formed through the through hole (h).
  • the outermost cover 2g is formed.
  • the filter layers 2b, 2d and 2f and the plates 2a, 2c and 2e may be repeatedly stacked on each other, and the holes h of the plates 2a, 2c and 2e and the holes of the filter layers 2b, 2d and 2f may be stacked. Alternatively, only the state in which the sound movement path 1 communicates may be maintained. In other words, the through hole or the sound movement path 1 of the filter layers 2b, 2d and 2f communicates with the through hole h of the adjacent plates 2a, 2c and 2e.
  • the through holes h formed in the plates 2a, 2c, and 2e adjacent to any one of the filter layers 2b, 2d, and 2f are different from each other in the sound movement path l of the filter layers 2b, 2d, and 2f. It is preferred to communicate at the end.
  • any of the sound movement paths 1 of the filter layers 2b, 2d, and 2f may communicate with the through-holes h formed in the plates 2a, 2c, and 2e, and the number of communicating may be many.
  • the sound movement path 1 formed in the filter layers 2b, 2d, and 2f may have various shapes such as a vortex shape and a zigzag shape.
  • the sound movement paths 1 formed in the neighboring filter layers 2b, 2d, and 2f are orthogonal to each other.
  • a plurality of different sound movement paths 1 may be formed in the filter layers 2b, 2d, and 2f, and a plurality of holes are provided in the neighboring plates 2a, 2c, and 2e corresponding to the plurality of sound movement paths 1. This can be formed.
  • the sound movement path 1 is formed in the filter layers 2b, 2d, and 2f, but the sound movement path 1 is formed in the plates 2a, 2c, and 2e. Perforations may be formed in the filter layer.
  • the acoustic filter 2 configured as described above is attached to the backhaul of the dynamic driver unit 1 to filter sound input and output through the backhaul.
  • FIG 3 is an enlarged view of an acoustic filter according to an exemplary embodiment of the present invention.
  • the filter layer 2d forms the sound movement path 1, and the plates 2c and 2e form the through hole h.
  • the ends of the sound movement path l of the filter layer 2d coincide with the positions P1 and P2 of the through hole h of the plates 2c and 2e, so that the sound movement path l and the through hole h communicate with each other. do.
  • the size (width) of the sound movement path 1 may be different for each filter layer, and may be determined corresponding to the shape of the sound movement path 1.
  • the size of the through hole h of the plates 2c and 2e may also be different.
  • Polyester, glass fiber, mineral wool, glass wool, polyurethane, etc. may be used as the material of the filter layer 2d, and the filter layer 2d may perform functions such as sound absorption, ringing prevention, and vibration prevention.
  • the plates 2c and 2e are preferably thin thin plates made of metal or synthetic resin, and the plates 2c and 2e mainly perform a sealing function of the sound movement path 1.
  • the sound movement path 1 may be filled with a sound absorbing material, and the sound absorbing material may use the material of the filter layer 2d.
  • the acoustic filter 2 configured as described above is mostly absorbed while passing through the horizontal, vertical, and various sound movement paths 1. That is, high and mid ranges are absorbed and only low frequencies below 100 Hz are passed. In addition, the state in which the backhaul and the air is maintained to maintain the same air pressure inside and outside the ear set. As a result, air passes through the acoustic filter 2, but most of the external noise is shielded.
  • FIG. 4 is a cross-sectional view of the dynamic driver unit applied to the present invention.
  • the dynamic driver unit 1 presented as an example in the present invention includes a hollow cone-shaped frame (yoke) 1a and a hollow cone-shaped diaphragm 1b vibrating inside the frame 1a. And an edge surround 1c for elastically supporting the front end of the diaphragm 1b to the front end of the frame 1a, and the front end side is fixed to the central portion of the diaphragm 1b at the rear side of the diaphragm 1b.
  • the bobbin 1d, the outer circumference is fixedly supported by the frame 1a, and the inner circumference is a damper 1e fixed to the bobbin 1d, and the voice coil 1f wound around the bobbin 1d, , Between the spider 1g for supporting the voice coil 1f, the ring-shaped permanent magnet 1h disposed outside the voice coil 1f, and between the frame 1a and the permanent magnet 1h. Ring-shaped front plate 1i fixedly arranged, ring-shaped rear plate 1j covering the lower part of permanent magnet 1h, and zero Ring-shaped pole piece protruding from the rear plate 1j to the inside of the bobbin 1d with a vibration space in which the bobbin 1d vibrates up and down between the magnet 1h and the front plate 1i. 1k and a dust cap 1l disposed at the center of the diaphragm 1b.
  • the permanent magnet 1h, the front plate 1i, the rear plate 1j, and the pole piece 1k constitute a magnetic circuit, and a current is applied to the voice coil 1f.
  • the voice coil 1f is pulled or pushed out according to the magnetic polarity of the voice coil 1f. That is, when the voice coil 1f and the permanent magnet 1h become the same magnetic polarity, the voice coil 1f and the permanent magnet 1h are pushed out, and when the voice coil 1f and the permanent magnet 1h become different magnetic polarities, the voice coil 1f is vibrated. do.
  • the voice coil 1f vibrates the diaphragm 1b fixed to the voice coil 1f vibrates and generates sound.
  • FIG. 5 is a cross-sectional view of an earset having a dynamic driver unit and an in-ear microphone as another application example of the present invention.
  • the ear set proposed in the present invention may include a tube 3 passing through the dynamic driver unit 1 and forming a hole in the center of the dust cap in the configuration of the dynamic driver unit 1 of FIG. 4. It further includes an in-ear microphone 4 embedded in the tube 3.
  • the entire volume can be made compact by minimizing the installation space by forming a hollow channel in front of the speaker, which is isolated from the output space of the speaker sound by the tube 3 and in which the in-ear microphone 4 is incorporated.
  • One end of the tube 3 is preferably coupled to any one of a rear plate, a pole piece, and a front plate, and the state of communication with the backhaul is maintained.
  • the other end may be fixed to the nozzle or the like.
  • One end of the tube 3 is preferably covered with an acoustic filter 2.
  • filtering is performed to reduce the amount of data for wireless transmission, thereby removing high and low frequencies. That is, the low frequency range of less than 100 Hz reversely output to the backhaul according to the operation of the diaphragm is completely removed in the filtering process for the wireless transmission, so that substantially all noise input to the in-ear microphone 4 is removed.
  • FIG. 6 is a cross-sectional view of a noise shield earset having an acoustic filter according to another embodiment of the present invention.
  • the noise shielding earset of the present invention includes a balanced armature driver unit 5 and a backhaul formed at the rear of the balanced armature driver unit 5. It includes an acoustic filter (2) to cover.
  • the noise shielding earset of the present invention configured as described above uses the acoustic filter 2 covering the backhaul to maintain the same air pressure inside and outside the earset, and to shield external noise introduced through the backhaul.
  • FIG. 7 is a cross-sectional view of the balanced armature driver unit applied in the present invention.
  • the balanced armature driver unit 5 presented as an example of the present invention includes a frame 5a, a pair of permanent magnets 5b provided in the frame 5a, and a permanent magnet spaced apart from each other.
  • the yoke plate 5c covering the 5b, one side having an air gap and positioned between the permanent magnets 5b, and the other side of the armature 5d fixed to the frame 5a, and the armature ( Coil 5e wound around a part of 5d and forming an alternating magnetic field between armature 5d and permanent magnet 5b, connecting rod 5f connected to armature 5d, and connecting rod 5f. It is connected to the vibration and comprises a diaphragm (5g) supported by the frame (5a).
  • the frame 5a may have an outer shape of a rectangular parallelepiped, but the outer shape of the frame 5a may not be limited thereto.
  • the frame 5a may be made of a hard material such as aluminum or hard resin.
  • the pair of permanent magnets 5b are spaced apart from each other to form a DC magnetic field, and may be composed of an upper magnet and a lower magnet.
  • the yoke plate 5c may be provided to form a closed circuit including an upper magnet and a lower magnet. That is, a constant magnetic field is generated by the upper magnet and the lower magnet, and the return path to the static magnetic field is limited by the yoke plate 5c.
  • the yoke plate 5c may be formed of a material having a high magnetic permeability with high magnetic properties.
  • the armature 5d is positioned at one end between the pair of permanent magnets 5b spaced apart from each other.
  • the other end opposite to one end may be formed in a bending structure bent in an upward direction and fixed to the frame 5a.
  • the other end of the bending structure may be modified in various forms, and any form can be applied as long as the structure can be fixed to the frame 5a.
  • the other end of the bending structure allows the overall height to be lowered, thereby reducing the volume.
  • the armature 5d can be formed by stamping out a metal strip.
  • the metal strip is easy to bend one end.
  • the armature 5d may be comprised of conventional magnetic materials such as permalloy (or iron-nickel magnetic alloy), iron-silicon materials such as silicon steel, or other materials.
  • the armature 5d may be formed of a material having high magnetic permeability with high magnetic properties.
  • the armature 5d located between the permanent magnets 5b may include an air gap between the permanent magnet 5b and
  • the coil 5e is wound around a part of the armature 5d and, when a signal current is applied, generates magnetic flux in the armature 5d, so that an alternating magnetic field is formed between the armature 5d and the permanent magnet 5b.
  • the connecting rod 5f may be made of a rigid nonmagnetic material.
  • the balanced armature driver unit 5 configured as described above, when a signal current is applied to the coil 5e, an alternating magnetic field formed between the armature 5d and the permanent magnet 5b by the magnetic flux generated in the armature 5d is permanent.
  • the armature 5d deforms in a vertical direction. Accordingly, the connecting rod 5f connected to the armature 5d is displaced in the vertical direction. And the displacement of the connecting rod 5f is transmitted to the diaphragm 5g connected and fixed to the upper end part, and a vibration membrane vibrates, and can generate a sound. The generated sound is emitted to the outside through the nozzle and finally delivered to the user's ear.
  • the balanced armature driver unit 5 and the in-ear microphone may be housed together in one case, and are separated from the output space of the speaker sound by a tube, and the in-ear microphone may be embedded inside the tube. . Since the functions described with reference to FIG. 5 apply substantially the same, duplicate description thereof will be omitted.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

L'invention concerne un écouteur de protection contre le bruit ayant un filtre acoustique. L'écouteur de protection contre le bruit ayant un filtre acoustique, selon la présente invention, comprend : une unité de pilotage pour générer un son; et un filtre acoustique pour recouvrir un trou noir formé à travers l'unité de pilotage, de façon à protéger contre un bruit externe tout en permettant à l'air de passer à travers le filtre acoustique, le filtre acoustique comprenant une couche de filtre ayant un trou traversant et un chemin de déplacement de son formé de manière sélective à travers cette dernière, et une plaque ayant un trou traversant formé à travers cette dernière qui communique de manière sélective avec le trou traversant et le chemin de déplacement de son de la couche de filtre; la couche de filtre et la plaque étant stratifiées de manière répétée l'une sur l'autre; et le trou traversant de la plaque communiquant avec le trou traversant de la couche de filtre ou le chemin de déplacement de son de cette dernière.
PCT/KR2016/013990 2015-12-30 2016-11-30 Écouteur de protection contre le bruit ayant un filtre acoustique WO2017116023A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2018532211A JP6649488B2 (ja) 2015-12-30 2016-11-30 アコースティックフィルタを有する騒音遮蔽イヤセット
DE112016006136.6T DE112016006136T5 (de) 2015-12-30 2016-11-30 Geräuschabschirmendes ohrhörerset mit einem akustischen filter
CN201680077213.1A CN108476353B (zh) 2015-12-30 2016-11-30 具有滤音器的噪音屏蔽耳机
US16/065,808 US10764673B2 (en) 2015-12-30 2016-11-30 Noise cancelling earset having acoustic filter

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2015-0189237 2015-12-30
KR20150189237 2015-12-30
KR10-2016-0009804 2016-01-27
KR1020160009804A KR101756653B1 (ko) 2015-12-30 2016-01-27 어쿠스틱 필터를 갖는 소음 차폐 이어셋

Publications (1)

Publication Number Publication Date
WO2017116023A1 true WO2017116023A1 (fr) 2017-07-06

Family

ID=59225098

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2016/013990 WO2017116023A1 (fr) 2015-12-30 2016-11-30 Écouteur de protection contre le bruit ayant un filtre acoustique

Country Status (1)

Country Link
WO (1) WO2017116023A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110189737A (zh) * 2019-05-22 2019-08-30 吴廷福 一种语音识别安装装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050093231A (ko) * 2004-03-18 2005-09-23 주성대학산학협력단 스피커
KR100694160B1 (ko) * 2005-12-29 2007-03-12 삼성전자주식회사 가변 덕트부를 가지는 이어폰
JP2008312086A (ja) * 2007-06-18 2008-12-25 Citizen Electronics Co Ltd 電気音響変換器
KR101185803B1 (ko) * 2011-09-19 2012-10-02 권영건 소형의 커널형 이어폰
KR101535916B1 (ko) * 2014-02-24 2015-07-13 삼본정밀전자(주) 음향필터가 설치된 이어피스 및 이어폰

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050093231A (ko) * 2004-03-18 2005-09-23 주성대학산학협력단 스피커
KR100694160B1 (ko) * 2005-12-29 2007-03-12 삼성전자주식회사 가변 덕트부를 가지는 이어폰
JP2008312086A (ja) * 2007-06-18 2008-12-25 Citizen Electronics Co Ltd 電気音響変換器
KR101185803B1 (ko) * 2011-09-19 2012-10-02 권영건 소형의 커널형 이어폰
KR101535916B1 (ko) * 2014-02-24 2015-07-13 삼본정밀전자(주) 음향필터가 설치된 이어피스 및 이어폰

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110189737A (zh) * 2019-05-22 2019-08-30 吴廷福 一种语音识别安装装置
CN110189737B (zh) * 2019-05-22 2023-05-05 北京亨利四方科技有限公司 一种语音识别安装装置

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