EP2002685B1 - Casque ecouteur - Google Patents

Casque ecouteur Download PDF

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Publication number
EP2002685B1
EP2002685B1 EP06725307.0A EP06725307A EP2002685B1 EP 2002685 B1 EP2002685 B1 EP 2002685B1 EP 06725307 A EP06725307 A EP 06725307A EP 2002685 B1 EP2002685 B1 EP 2002685B1
Authority
EP
European Patent Office
Prior art keywords
headband
phone according
head
ear
portions
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.)
Expired - Lifetime
Application number
EP06725307.0A
Other languages
German (de)
English (en)
Other versions
EP2002685A1 (fr
Inventor
Markus Kuhr
Lars Milde
Joachim Scholz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sennheiser Electronic GmbH and Co KG
Original Assignee
Sennheiser Electronic GmbH and Co KG
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 Sennheiser Electronic GmbH and Co KG filed Critical Sennheiser Electronic GmbH and Co KG
Priority to EP12197339.0A priority Critical patent/EP2574079B1/fr
Publication of EP2002685A1 publication Critical patent/EP2002685A1/fr
Application granted granted Critical
Publication of EP2002685B1 publication Critical patent/EP2002685B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/105—Earpiece supports, e.g. ear hooks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1016—Earpieces of the intra-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1058—Manufacture or assembly
    • H04R1/1066—Constructional aspects of the interconnection between earpiece and earpiece support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/17—Hearing device specific tools used for storing or handling hearing devices or parts thereof, e.g. placement in the ear, replacement of cerumen barriers, repair, cleaning hearing devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication

Definitions

  • the present invention relates to a handset, in particular an earphone, and is based on a handset, as he EP 1 250 025 is known.
  • Handset or earphones are well known in many different embodiments. However, such headphones are often perceived as too heavy and often do not have the necessary comfort, especially during physical activities.
  • in-ear earphones which can be plugged into an outer ear and then sit there more or less firmly on the outer ear.
  • in-ear headphones are perceived by some people as unpleasant, for example, because there may be pressure points in the outer ear or because they may fall out in some people.
  • EP 1 250 025 A1 shows a neckband earphone whose neckband is at least partially rolled up when not worn. In the fitted state, the neckband presses against the back of a head of the earphone. The neck band extends from the transducer housing over the upper ear root and is in the worn state at the back of the head.
  • a neckband earphone is not suitable in particular for spectacle wearers.
  • a handset in particular an earphone, which has two transducer housings and a flexible headband.
  • the headband is preformed so that it is wound in its relaxed and un-worn condition and has at least one turn.
  • the handset can be stowed so space-saving, if it is not worn.
  • the headband has two first sections which respectively adjoin the converter housing and a second section connecting the two first sections.
  • the two first portions extend substantially upwards and parallel to the lateral head portions of a wearer.
  • the headband has a bend towards the back of the head.
  • the second portion is adapted in the mounted state substantially at the transition between the head and the back of the head and also has a bend which substantially conforms to the head of the wearer.
  • the invention also relates to an ear fitting ring for an earphone.
  • the Ohranpassring is attached to a transducer housing a listener.
  • the fitting ring has substantially a first circular recess, which is arranged in the center of the ring.
  • the ear fitting ring has recesses or grooves which extend radially from the outer edge partially toward the first recess.
  • Fig. 1a to 1c each show a perspective view of a headphone according to an embodiment.
  • the headphone has a first and second transducers 41, 42, which are connected to one another by an elastic (twisted) and prestressed stirrup (substantially with a circular diameter), preferably in the form of a spring wire.
  • the transducers 41, 42 are preferably designed as in-ear receivers.
  • One of the transducers 41 is connected to an audio port 46 via a cable 44.
  • a bracket 45 may be provided to secure the cable during use.
  • Fig. 1b shows another view of the headphones from Fig. 1a .
  • a cable 43a may be provided to provide electrical delivery from the cable 44 to the other handset.
  • Fig. 1c shows another view of the headset according to Fig. 1a ,
  • the headband 43 or the headband is biased or preformed so that it is rolled in a relaxed state to 1 to about 1 3 ⁇ 4 turns, ie to about 630 degrees (loop angle), the diameter of the bracket then about 80 -. 100 mm, preferably 90 mm.
  • the headband needs to be unfolded so that there is some bias, leaving the in-ear listener 41, 42 are pressed against the respective outer ear, so that a secure hold can be ensured.
  • Fig. 1d shows a plan view of the headphone according to the embodiment.
  • the headphone is shown in a non-worn state, so that due to the preforming of the headband or headband 43, the earpiece is rolled up into a loop.
  • the loop has a Schlingungswinkel between 360 and 720 degrees, and preferably between 550 and 630 degrees.
  • Fig. 1d is a state shown where the headset automatically sets up due to the shape of the spring wire to a wrap angle of about 560 degrees.
  • Fig. 1e shows the headphone according to the embodiment in a worn state.
  • the housing 42 of an in-ear earpiece engages in the outer ear of a wearer.
  • the headband 43 extends upward toward the head apex.
  • the headband 43 is substantially divided into a first portion 43c and a second portion 43d.
  • housing 42 of the in-ear earphone extends upwardly and first portion 43c of the headband engages housing 42.
  • the first portion 43c is bent backwards (to the back of the head).
  • the second section 43d is also configured curved and extends approximately on a circular path (partial section) with respect to the center of the head.
  • the second portion 43d extends on top of the skull or at the junction between the top of the skull and the back of the head. Where the second portion 43d actually abuts the head of a wearer depends on the size of the head. If the head of a wearer is a large head, then the second portion 43d will be on the top of the skull. However, if the wearer has only a small head, the second portion 43d will be at the junction between the top of the skull and the back of the head, and the curvature of the portion 43d will be larger when worn on a small head than when worn on a large one Head.
  • Fig. 1f shows a detailed view of a first portion of the headphone according to the embodiment.
  • the housing 42 of the headset is inserted into the outer ear O.
  • the supply cable 44 is attached to the housing 42 such that it hangs down in front of the outer ear O when the handset is worn.
  • Fig. 1g shows a further view of the handset according to the embodiment in a worn state.
  • a housing 42 of the in-ear earphone is in the outer ear O. arranged.
  • the first portion 43c of the headband 43 initially runs substantially parallel to the lateral skull portion and has a bend to the back of the skull.
  • the second portion 43d also has a bend and rests here at the transition between the back of the head and the top of the skull. This bend causes a bias on the listener.
  • Fig. 1h shows a side perspective view of a handset according to an embodiment.
  • the first portion 43c of the temple is substantially straight.
  • the in-ear earphone is shown according to the embodiment in an unused state, ie, the bracket 43 is wound up accordingly.
  • Fig. 1i shows a schematic plan view of the in-ear earphone according to the embodiment.
  • the handset is also shown in an unused condition, ie the bracket 43 is wound up accordingly due to its bias.
  • Fig. 1j shows a further schematic view of the handset according to the embodiment.
  • the handset is shown in an unassembled, ie rolled-up condition with the handset placed on a smooth surface.
  • the housing 41, 52 of the in-ear earphone has an angle to the surface of ⁇ .
  • This angle ⁇ is approximately between 35 ° and 55 °, preferably about 40 °.
  • 43e of the bracket 43 kinks 43e are provided in each case.
  • Fig. 1k shows a further perspective view of the handset according to the embodiment. Again, the listener is shown in a rolled up state. Between the first and second sections 43c, 43d of the bracket, a kink 43e is likewise provided in each case.
  • the bracket 43 is made of a spring steel and has two kinks at the transition between the first and second sections 43c, 43d. Either the spring steel may be used to transmit the audio signals from one housing to the other, or alternatively, another cable may be integrated into the bracket 43.
  • the spring steel has a spring constant of about 800-1300 N / mm, preferably about 1100 N / mm. Due to the design of the handset, a pressure of less than 1 N is reached.
  • the bracket 43 of the handset is on the one hand flexible and on the other biased or preformed that it has a diameter of about 80 to 100 mm, preferably 90 mm, in a non-attached state.
  • the bracket To attach the bracket, the bracket must be stretched, and first one of the headphones must be rotated by about 180 ° (relative to the longitudinal axis of the headband) and the two receivers must be pulled outwards.
  • the listener In the unfolded state, the listener then points in the FIGS. 1e . 1f and 1g shown shape. Due to this rotation or torsion, the listeners tend to turn inwards.
  • the angle ⁇ about 35 - 55 °, preferably about 40 °
  • 1j is achieved that the listener, when the handset is attached, adapt to the outer ear accordingly. Due to the torsion, the listeners experience a force to nestle against the outer ear.
  • the torsion is preferably adjusted so that in the mounted state, the front of the transducer press slightly outward, so that the listener turns in the ear towards the ear canal.
  • the listener turns slightly against the suppository of the outer ear, so that the listener locks in the outer ear or ear canal and turns easily to the ear canal.
  • a certain torque is generated on the outer ear. This leads to an improved seal of the outer ear through the transducer housing.
  • edges 43e are preferably inserted into the spring steel. This edge is either pressed in or punched in.
  • the two arranged in the transition region edges cause on the one hand close listening ears of the head, and also the spring steel is stabilized only in the direction as it should be configured in the mounted state. By selecting edges 43e, it is determined which side should be right and which side should be left.
  • the torsion described above has a preferred direction, so that only a turning of a listener in one direction causes the listener or the bracket reaches the intended shape for placement.
  • a Aufklappvorzugsraum is designed.
  • the headphone is shown with in-ear headphones, the headphone according to the embodiment can be realized with other listeners.
  • Fig. 1l shows a view of an in-ear earphone, which is arranged in an outer ear O.
  • Fig. 1m shows another view of an in-ear listener in an outer ear.
  • the in-ear listener has an ear fitting ring 41b.
  • Ohranpassringe 41 a, 41 b are designed to be removable, so that by means of these sealing rings an acoustic seal between a listener and the ear canal can be ensured even for different ear sizes.
  • Fig. 1n shows a plan view of an Ohranpassring according to Fig. 1m .
  • This fitting ring is concavely curved or mushroom-shaped in cross-section, wherein in the middle of a circular recess or a hole 41b is present, so that the Ohranpass published on a handset, in particular an in-ear handset, can be placed.
  • recesses 41 ba may be arranged, which extend axially partially to the inner edge. It should be noted, however, that these recesses do not extend completely to hole 44bb.
  • the Ohranpassring 41b is designed substantially mushroom-shaped and serves as stated above to seal the listener in the outer ear. Sealing between the earpiece and the ear canal can lead to bass loss. This can occur in particular in a rigid listener's form.
  • a listener is at least partially inserted into the ear canal and seals it, it may cause damage to the membrane due to the overpressure in the ear canal. This can be prevented by using the ear cushion ring 41b by at least partially providing grooves or depressions in the ring. Thus, it is achieved that until shortly before the complete insertion of the listener into an auditory canal, the thus compressed air is dissipated or can escape.
  • the acoustic properties of a listener during the development phase have been determined by the geometry of the listener and the materials used and can not be changed easily thereafter.
  • damping materials such as silk, cushioning papers, foams and the like are used. By choosing the materials, these properties can be influenced.
  • the exchangeable acoustic elements can also be designed so that they are hidden and are not visible from the outside.
  • Such acoustic elements can be configured, for example, as cartridge-like damping elements, which can be screwed on as well as on both sides.
  • damping elements or acoustic elements may, for example, have sponges or may change or contain defined acoustically effective volumes.
  • acoustic elements or damping elements can be provided, which adapt the acoustic properties of a listener to the individual taste of a user. Furthermore, the acoustic elements or the damping elements can be tuned to different music directions, so that by replacing the damping elements or the acoustic elements, an adjustment of the listener is made possible to a particular music direction. What was previously provided by a design of an electronic equalizer, for example in a playback device, can thus be configured directly on a handset.
  • replaceable damping elements are provided, which also have an acoustic function.
  • Such attenuation elements can be used both in headphones and earphones to influence the acoustic properties of the listener.
  • the replaceable damping elements or acoustic elements are designed such that the end user can exchange them themselves.
  • the damping elements are thus preferably inserted, plugged or screwed configured.
  • a recess may be present, in which a cartridge-like damping element or acoustic element can be inserted or screwed, whereby the acoustic properties of the listener can be changed.
  • the interchangeable damping elements can be used, for example, to influence the frequency response, bass reproduction, treble reproduction and center reproduction.
  • the listener can be converted by the replacement of the cover, for example, from a closed listener to an open listener, so that the tuning behavior of the listener is changed.
  • Conversion of a closed earphone to an open earphone may have the advantage of better perceiving the environment. This can be advantageous in particular when cycling.
  • an open listener can be converted to a closed listener.
  • the replaceable damping elements are designed, for example, as a cover of a receiver, then the volume behind a ventilation opening can be influenced by the differently designed lids, so that the acoustic properties of the receiver are changed on account of the volume of the ventilation opening.
  • the covers described above may provide a different volume between the cover and the listener.
  • a hole or an opening may likewise be provided in the cover, which likewise leads to a change in the acoustic properties of the listener.
  • Replaceable acoustic elements can be implemented not only in a hooked earphone but also in other earphones such as a headphone, earphone, or in-ear earphone.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Headphones And Earphones (AREA)
  • Telephone Set Structure (AREA)
  • Adjustable Resistors (AREA)

Claims (13)

  1. Casque écouteur, en particulier un casque écouteur oreillette, pourvu
    d'un premier et d'un deuxième boîtier de convertisseur (41, 42) et d'un arceau de casque (43) en acier à ressort flexible reliant le premier et le deuxième boîtier de convertisseur (41, 42),
    dans lequel l'arceau du casque (43) est préformé de manière telle que, dans son état détendu, non porté, il soit enroulé et présente au moins un enroulement,
    dans lequel l'arceau du casque (43) présente deux premiers secteurs (43c), qui sont raccordés chacun au boîtier de convertisseur (41, 42), et un deuxième secteur (43d) reliant les deux premiers secteurs (43c),
    dans lequel les deux premiers secteurs (43c) dans l'état appliqué s'étendent pratiquement parallèlement aux parties de tête latérales d'un porteur et une courbure vers l'arrière de la tête se forme au niveau des deux zones de transition (43d) entre les premiers et le deuxième secteur (43c, 43d),
    dans lequel le deuxième secteur (43d) dans l'état appliqué est adapté essentiellement à la transition entre la tête et l'arrière de la tête et présente également une courbure,
    dans lequel deux points d'inflexion dans les zones de transition entre les premiers secteurs et le deuxième secteur sont prévus dans l'acier à ressort.
  2. Casque écouteur selon la revendication 1, dans lequel l'arceau de casque (43), dans l'état non porté, est pratiquement enroulé dans un plan.
  3. Casque écouteur selon la revendication 2, dans lequel le rayon de courbure du deuxième secteur (43d) et le rayon de courbure des zones de transition dépendent chacun de la taille de la tête du porteur.
  4. Casque écouteur selon l'une quelconque des revendications précédentes, dans lequel l'arceau du casque, dans l'état détendu non porté, présente un diamètre d'environ 80 à 100 mm, en particulier de 90 mm.
  5. Casque écouteur selon l'une quelconque des revendications précédentes, dans lequel l'arceau du casque (43) présente un acier à ressort ayant une constante de rappel d'environ 800 à 1300 N/mm, en particulier d'environ 1100 N/mm.
  6. Casque écouteur selon l'une quelconque des revendications précédentes, dans lequel le premier et le deuxième boîtier de convertisseur (41, 42) sont inclinés d'un angle (a) d'environ 35 à 55°, en particulier de 40°.
  7. Casque écouteur selon la revendication 1, dans lequel les points d'inflexion (43e) dans l'acier à ressort sont conçus de manière telle qu'une direction d'inflexion préférée soit prévue.
  8. Casque écouteur selon l'une quelconque des revendications précédentes, dans lequel l'enroulement de l'arceau du casque (43) dans son état détendu présente un angle d'enroulement entre environ 360° et 720°, en particulier entre 550° et 630°.
  9. Casque écouteur selon l'une quelconque des revendications précédentes, dans lequel l'arceau du casque (43) présente une torsion d'environ 180° dans une direction préférée.
  10. Casque écouteur selon l'une quelconque des revendications précédentes, dans lequel l'arceau du casque (43), dans l'état tendu, porté, est recourbé vers l'arrière dans ses premiers secteurs (43c) et le deuxième secteur (43d) qui relie les deux premiers secteurs (43c) forme un secteur partiel d'une trajectoire circulaire.
  11. Casque écouteur selon l'une quelconque des revendications précédentes, dans lequel l'acier à ressort présente une torsion telle et les points de flexion (43e) sont formés de manière telle que l'arceau du casque (43) soit stabilisé uniquement dans l'état porté.
  12. Casque écouteur selon l'une quelconque des revendications précédentes, dans lequel des bagues d'adaptation d'oreille remplaçables (41a, 41b) peuvent être fixées sur le boîtier de convertisseur (41, 42).
  13. Casque écouteur selon la revendication 11, dans lequel des évidements et/ou des rainures sont disposés dans les bagues d'adaptation d'oreille.
EP06725307.0A 2006-03-24 2006-03-24 Casque ecouteur Expired - Lifetime EP2002685B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12197339.0A EP2574079B1 (fr) 2006-03-24 2006-03-24 Écouteur avec une unité de réglage du volume

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2006/061037 WO2007110108A1 (fr) 2006-03-24 2006-03-24 CASQUE ECOUTEUR et unité de réglage de volume

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP12197339.0A Division EP2574079B1 (fr) 2006-03-24 2006-03-24 Écouteur avec une unité de réglage du volume
EP12197339.0 Division-Into 2012-12-14

Publications (2)

Publication Number Publication Date
EP2002685A1 EP2002685A1 (fr) 2008-12-17
EP2002685B1 true EP2002685B1 (fr) 2013-07-03

Family

ID=37309757

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12197339.0A Expired - Lifetime EP2574079B1 (fr) 2006-03-24 2006-03-24 Écouteur avec une unité de réglage du volume
EP06725307.0A Expired - Lifetime EP2002685B1 (fr) 2006-03-24 2006-03-24 Casque ecouteur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12197339.0A Expired - Lifetime EP2574079B1 (fr) 2006-03-24 2006-03-24 Écouteur avec une unité de réglage du volume

Country Status (4)

Country Link
US (1) US8325942B2 (fr)
EP (2) EP2574079B1 (fr)
CN (2) CN101433097A (fr)
WO (1) WO2007110108A1 (fr)

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CN201054760Y (zh) * 2007-04-30 2008-04-30 吴英瑞 耳挂式麦克风
GB2486268B (en) * 2010-12-10 2015-01-14 Wolfson Microelectronics Plc Earphone
EP2809603A4 (fr) * 2012-02-03 2015-10-07 Jason G Johnson Connecteur creux et flexible pour cordons à boucle
GB201721841D0 (en) * 2017-12-22 2018-02-07 Midbass Distribution Ltd Set of headphones
CN109246513A (zh) * 2018-09-30 2019-01-18 歌尔科技有限公司 一种主动降噪耳机及其降噪方法、装置
KR102662478B1 (ko) * 2020-04-30 2024-05-03 썬전 샥 컴퍼니 리미티드 이어폰
CN113825062B (zh) * 2021-11-10 2024-09-17 苏州登堡电子科技有限公司 一种扭转夹持结构和后戴式骨传导耳机设备
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Also Published As

Publication number Publication date
EP2574079B1 (fr) 2014-06-25
EP2574079A2 (fr) 2013-03-27
CN201039431Y (zh) 2008-03-19
EP2574079A3 (fr) 2013-04-03
US8325942B2 (en) 2012-12-04
CN101433097A (zh) 2009-05-13
US20090147971A1 (en) 2009-06-11
WO2007110108A1 (fr) 2007-10-04
EP2002685A1 (fr) 2008-12-17

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