US3798393A - Headphone construction - Google Patents

Headphone construction Download PDF

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Publication number
US3798393A
US3798393A US00231762A US3798393DA US3798393A US 3798393 A US3798393 A US 3798393A US 00231762 A US00231762 A US 00231762A US 3798393D A US3798393D A US 3798393DA US 3798393 A US3798393 A US 3798393A
Authority
US
United States
Prior art keywords
ear
diaphragm
headphone
housing
opening
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
US00231762A
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English (en)
Inventor
R Gorike
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.)
AKG Acoustics GmbH
Original Assignee
AKG Akustische und Kino Geraete GmbH
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 AT158369A external-priority patent/AT307531B/de
Priority claimed from AT00243/70A external-priority patent/AT315933B/de
Application filed by AKG Akustische und Kino Geraete GmbH filed Critical AKG Akustische und Kino Geraete GmbH
Application granted granted Critical
Publication of US3798393A publication Critical patent/US3798393A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type

Definitions

  • ABSTRACT A headphone construction includes freely radiating Related US. Application Data sound converters whose diaphragms, when the ear-.
  • the supporting elements may Field Search-m 115-5 advantageously comprise a pair of ring members 179/156; 181/23 which are concentrically arranged one within the other around the ear and which support the earphone [56] References Cited at a spaced location from the ear.
  • the rig members UNITED STATES PATENTS include openings which may be aligned and enlarged 3.586.794 6/1971 Michaelis 181/23 varying the Opening defined between the 2.363.175 11/1944 Grossman 181/23 aphragm and the ear openmg- 8 Claims, 3 Drawing Figures PATENIEUMAR 19 I974 FIG.I
  • This invention relates in general to the construction of earphones and in particular to a new and useful earphone with a freely radiating sound converter having a diaphragm which is not loaded by the impedance of the ear when the earpieces are attached over the ear and they are primarily mass-inhibited and clamped by acoustic or mechanical friction resistances, and wherein supporting elements are provided for the earpieces for holding the diaphragm at a minimum spacing distance from the diaphragm inlet to the auditory cancal of the ear of the wearer.
  • Head phones which include earpieces which do not have to fit tightly on the ear are known as earpieces of the first order or as open earpieces. These are earpieces whose diaphragms are not exposed to the full damping effect of the impedance of the outer auditory canal, but a lower impedance appears as a damping element for the diaphragm, depending on the degree of loose fit or of the. partlypermeable soft padding between the ear and the earpiece.
  • Such an arrangement involves a change in the frequency course of the sound pressure of the ear particularly a loss of low frequencies. It has been attempted to reduce the resonance frequency of the small diaphragms by loading by means of an acoustic mass arranged in one or several narrow bores. But in such an arrangement disturbing resonance peaks appeared in the range of higher frequencies.
  • a head phone or ear piece having a sound converter which operates in the manner of a loud speaker with a freely radiating diaphragm. No use is made of the damping effect of the ear impedance but the vibration mechanical properties of the sound converter are influenced by dampings in the converter.
  • the invention provides an improved means for mounting the ear piece and for arranging the converter adjacent the ear. The diaphragm is damped so that it provides, in the entire bearing range with constant flow through the moving coil, a constant sound pressure at the ear entrance.
  • the converters must be designed in a different manner than heretofore.
  • the small diaphragm of metal or plastic or a combination of these materials must have a very flexible bearing so that the resonance frequency is in the range of the lowest frequencies preferably between 50 and Hz.
  • the damping of the diaphragm is extremely critical because it alone is determinant for the acoustic effect on the ear. The damping must not cause any resonances by the formation of cavities and must be ohmic to a great extent.
  • Mass-inhibition we understand a certain ratio of the amplitude of the diaphragm relative to the current flowing through the moving coil as a function of the frequency. Mass-inhibition exists when the amplitude at the diaphragm increases at constant current as a square function with decreasing frequency.
  • the resonance frequency is of the diaphgram must be at the lower limit of the transmission range as it is known in freely radiating loud speakers. With small diaphragms of from 3 to 5 centimeters in diameter as required for head phones the requirement for a low tuning of the diaphragm results in an extremely flexible support for the diaphragm.
  • the damping of the diaphragm In order to meet the required amplitude ratio, the damping of the diaphragm must be effected very accurately by means of acoustic frictional resistances. Insufficient damping allows the diaphragm to permform excessive amplitude in the resonance frequency which causes the diaphragm or the moving coil to strike against the magnet system or causes their mechanical destruction. Excessive damping has the effect that the state of vibration of the diaphragm changes from massinhibition to friction inhibition which manifests itself in a loss of bass reproduction in the head phone. The damping must be just enough so that a resonance super elevation is prevented and the law for mass-inhibition is satified. v
  • damping material for example, foam
  • the damping material must also be so selected and arranged that the effective sound does not undergo any substantial weakening particularly of the frequency dependent type.
  • the construction of the mount of the converters can be such for example, that the head band bears above both the ears on the head and the converters are suspended on the band or ear pieces can be provided which have wide openings through which the cavity formed at the ear is in communication with the outside air.
  • the openings serves at the same time for ventilation which is desirable for health reasons.
  • the openings are defined by two concentrically arranged spacing rings having oblong arcuate slots which may be shifted relatively or aligned in order to selectively define the degree of opening which is obtained. The changing of the sizes of the openings by the degree of alignment of the two oblong slots provides different acoustic effects.
  • the converters work like freely radiating loud speakers and the ear works in the close range of the diaphragm. If the openings are closed, the impedance of the outer auditory canal has a damping effect on the diaphragm so that the mass-inhibited diaphragm becomes primarily a frictional-inhibited diaphragm.
  • an object of the invention to provide an improved head piece which includes an electrostatic converter having a diaphragm mounted in a housing which is spaced from the ear by means which permits the opening of the ear to the surrounding air and which advantageously also includes damping means disposed between the diaphragm and the ear.
  • a further object of the invention is to provide an earpiece or head phones with freely radiating sound converters having diaphragms which are not loaded by the impedance of the ear but are primarily mass-inhibited and clamped by acoustic or mechanical frictional resistances and which include means for supporting the diaphragms so that a minimum spacing between the dia phragm and the inlet to the ear is ensured which will correspond to contact-free wearing of the sound converters.
  • a further object of the invention is to provide an earpiece which is simple in design, rugged in construction, and economical to manufacture.
  • FIG. 1 is a schematic sectional representation of an earpiece constructed in accordance with the invention
  • FIG. 2 is a view similar to FIG. 1 of a slightly modified embodiment
  • FIG. 3 is an enlarged view similar to FIG. 1 of the preferred embodiment of the invention.
  • the invention embodied therein in FIG. 1 comprises an earpiece including a cup-shaped housing 2 for an electrostatic converter preferably an electrodynamic system 1 which is supported therein and which includes a diaphragm 3 shown in dotted lines.
  • an electrostatic converter preferably an electrodynamic system 1 which is supported therein and which includes a diaphragm 3 shown in dotted lines.
  • the earpiece in order to prevent the earpiece from bearing directly on the ear supporting means in the form ofa supporting element or a plurality of such supporting elements 4 are provided to space the housing opening 9 away from the auditory canal opening 5 of the ear of the wearer.
  • the individual supporting elements 4 hold the housing 2 so that a minimum distance of several milimeters between the edge 8 of the housing and the auditory canal 5 is maintained.
  • a housing 2 of similar construction carries an electrostatic converter 1' having a diaphgram 3 and it includes an opening 9' which is held at spaced orientation from the ear by supporting means 4' as in the other embodiment.
  • a clamping material 6 is interposed between the opening 9' and the auditory canal'5.
  • the damping material 6 has the form of a cylindrical disc which may also be of conical configuration in which the thinnest point, or the apex of the cone, is at the center of the diaphragm. It is important that the damping material must not bear directly on the ear since the latter is a poor heat conductor and would cause an accumulation of heat which would lead to the formation of sweat.
  • the support means 4 comprises a ring structure instead of the individual cylindrical plugs 4 as employed in the embodiment of FIG. 1.
  • a support means includes a ring shaped chasis 21 which is secured at a flange of a housing or cap 18 and which is preferably made of a material such as plastic.
  • the ring-shaped chasis 21 includes a plurality of openings or oblong slots 23 which may be selectively aligned with similar oblong slots 25 of outer ring members 24 which are rotatably supported between a ledge portion of the ring member 21 and the flange of the cap 18.
  • An ear fitting member is secured to the chasis 21 and it includes a bulbous portion 22 which can be filled with a liquid or a foam material. Variation in the size of the openings defined by the two separate slots 23 and 25 may be made by rotating the outer ring 24 relative to the chasis 21, so that it is possible to vary the ventilation of the space created between the earpiece diaphragm and the ear and also to provide variation characteristics.
  • a sound transmitting foam cushion 6' is arranged on a guard or grill 10 in front of the diaphragm 3".
  • the drive of the diaphragm 3" which is suspended on a soft mounting 28 is conducted through a centering diaphragm 9 and is effected preferably by an electrodynamic converter system consisting of a magnet 11 and a bolt 12 as well as a front magnet plate 13 and a rear magnetic plate 14.
  • a vent duct 15 in the bolt 12 leads from the central portion of the diaphragm 3" to the outside and into the chamber enclosed by the cap 18.
  • the diaphragm parts which are arranged on the outside coil 16 are in communication with this chamber enclosed by the cap 18 through the vent hole 17.
  • the cap 18 is provided with openings 19 to establish communication with the outside air.
  • the cap 18 carries a journal 20 at the diametrically opposite sides which provide means for mounting the headpiece on a head set band (not shown).
  • the chamber defined within the cap 18 may advantageously be filled with a damping material.
  • a head phone constructed particularly as indicated in FIG. 3 may be made relatively large but maintained very light, easy and pleasant to use, and it will not exert a continuous annoying pressure on the ear.
  • the effect achieved by the use of a head phone of this nature is characterized by a sound similar to that listening to a loud speaker production in a room since the room noises can also be heard through the distance pieces and the impressions of being isolated, as is the case with conventional earphones, is eliminated. Due to the fact that a converter is provided at each ear, stereophonic performances can be transmitted very clearly and much simpler than with the loud speakers and with substantially less electric power being required at the output of the amplifier while the usual sound pattern and the impression is maintained.
  • a headphone having a completely free sound radiation, and including a sound converter with a diaphragm which, with the headphone mounted adjacent a wearer's ear, is free of loading by the impedance of the ear, said headphone comprising, in combination, a housing; an electro-acoustic converter in said housing having a freely radiating, primarily mass inhibited and damped, diaphragm, with a natural resonant frequency in the range of the lowest sound frequencies; said housing having an opening on one side of said diaphragm for sound transmission'from said diaphragm to the entrance to the auditory canal of the wearers ear; and rigid supporting means extending from the periphery of said housing opening for supporting said housing at the wearers ear, free of engagement with the ear at and around the auditory canal, with the opening of the housing spaced a fixed distance from the wearers ear to provide a minimum distance between the diaphragm and the entrance to the auditory canal of the wearers ear corresponding to completely contact
  • said supporting means comprises a radially narrow ring member connected to said housing and spacing said opening and said diaphragm at a fixed distance from the auditory canal, said ring member having plural openings to the atmosphere.
  • a headphone according to claim 1, wherein said supporting means comprise a plurality of individual elements spaced around theperiphery of said housing opening, and including a dampening material located adjacent said opening between the diaphragm and the ear and spaced from the ear.
  • said supporting means comprises radially narrow ring means holding said housing opening and the diaphragm at a spaced location from the ear and including one apertured ring member movable relatively to another for defining openings to the atmosphere of varying size.
  • said supporting means comprises a radially narrow ringshaped supporting element engaged around said housing around the opening thereof, said supporting element having a bulging annular edge portion of soft material on its narrow outer edge for fitting against the ear.
  • a headphone including a sound damping material disposed over said diaphragm between the diaphragm and the ear and spaced from the ear, said supporting means comprising a radially narrow ring member having openings, and means associated with said ring member for varying the size of the openings and for closing the openings.
  • said supporting means includes first and second ring members each having a slot therethrough, said ring members being relatively rotatable for aligning at least a portion of the slots of each ring member, the aligned slots being enlargeable to vary the opening size.
  • said sound dampening material comprises a foam cushion

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
US00231762A 1969-02-17 1972-03-03 Headphone construction Expired - Lifetime US3798393A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT158369A AT307531B (de) 1969-02-17 1969-02-17 Kopfhörer
AT00243/70A AT315933B (de) 1970-01-12 1970-01-12 Kopfhoerer

Publications (1)

Publication Number Publication Date
US3798393A true US3798393A (en) 1974-03-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00231762A Expired - Lifetime US3798393A (en) 1969-02-17 1972-03-03 Headphone construction

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Country Link
US (1) US3798393A (enrdf_load_stackoverflow)
DE (1) DE2006249A1 (enrdf_load_stackoverflow)
FR (1) FR2031469A1 (enrdf_load_stackoverflow)
GB (1) GB1301014A (enrdf_load_stackoverflow)
NL (1) NL7001438A (enrdf_load_stackoverflow)

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892927A (en) * 1973-09-04 1975-07-01 Theodore Lindenberg Full range electrostatic loudspeaker for audio frequencies
USB554594I5 (enrdf_load_stackoverflow) * 1975-03-03 1976-01-20
US3995113A (en) * 1975-07-07 1976-11-30 Okie Tani Two-way acoustic communication through the ear with acoustic and electric noise reduction
US3999020A (en) * 1975-10-29 1976-12-21 Koss Corporation Transducer with variable frequency response
US4005278A (en) * 1974-09-16 1977-01-25 Akg Akustische U. Kino-Gerate Gesellschaft M.B.H. Headphone
US4058688A (en) * 1975-05-27 1977-11-15 Matsushita Electric Industrial Co., Ltd. Headphone
US4437538A (en) 1982-03-30 1984-03-20 Ingemar Ohlsson Ear-cap
US4529057A (en) * 1982-04-13 1985-07-16 The Marconi Company Limited Ear defenders
US5243747A (en) * 1990-04-05 1993-09-14 Etablissements Mesnel Vibrating device for putting a u-section in place on a rim of a frame of a motor vehicle body
EP0589623A3 (en) * 1992-09-25 1994-04-13 Sony Corporation Headphone
US6134336A (en) * 1998-05-14 2000-10-17 Motorola, Inc. Integrated speaker assembly of a portable electronic device
US6470088B2 (en) * 2000-12-27 2002-10-22 Koninklijke Philips Electronics, N.V. Vented loudspeaker enclosure with limited driver radiation
US6785395B1 (en) 2003-06-02 2004-08-31 Motorola, Inc. Speaker configuration for a portable electronic device
US6856690B1 (en) 2002-01-09 2005-02-15 Plantronis, Inc. Comfortable earphone cushions
EP1338172A4 (en) * 2000-10-13 2006-06-07 Mm Gear Co Ltd HELMET ACCESSORY
EP1197123A4 (en) * 1999-07-06 2006-12-20 Lin Chung Yu EARRING DEVICE WITHOUT IMPULSE RUSH AND AMBIANCE RUSH BLOCKADE
US20090226023A1 (en) * 2008-03-07 2009-09-10 Kabushiki Kaisha Audio-Technica Headphone
US20090250290A1 (en) * 2008-04-03 2009-10-08 Mann+Hummel Gmbh Device for Noise Transmisson in a Motor Vehicle
US20100284558A1 (en) * 2009-05-08 2010-11-11 Tominori Kimura Earmuff and Headphone
US20100331058A1 (en) * 2009-06-30 2010-12-30 Yao Qingshan Apparatus including an earpiece speaker module
US20110002475A1 (en) * 2009-07-06 2011-01-06 Kabushiki Kaisha Audio-Technica Earmuff and headphone
US20110147116A1 (en) * 2009-12-18 2011-06-23 Mann+Hummel Gmbh Tunable sound transmission device for a motor vehicle
US20120308067A1 (en) * 2011-06-01 2012-12-06 Wai Hung Ip Headphone 3D Hearing technology
US8588453B1 (en) * 2012-09-04 2013-11-19 Eastern Technologies Holding Limited Reverse-direction co-axial earphone
USD709050S1 (en) * 2012-11-21 2014-07-15 Zound Industries International Ab Parts of marshall monitor headphone
TWI457009B (zh) * 2011-12-02 2014-10-11 Giga Byte Tech Co Ltd 耳機耳殼及耳機
US9800978B2 (en) 2014-12-31 2017-10-24 Skullcandy, Inc. Audio driver assemblies, headphones including the audio driver assemblies, and related methods
US20180027317A1 (en) * 2016-07-19 2018-01-25 Tymphany Hk Limited Closed acoustical architecture having a controlled leakage
EP3195612A4 (en) * 2014-09-04 2018-05-30 Harman International Industries, Incorporated Headphone ear cushion
US10034112B2 (en) 2014-07-25 2018-07-24 Skullcandy, Inc. Mass port plug for customizing headphone drivers, and related methods
US10154335B1 (en) * 2016-09-06 2018-12-11 Minh Dung Hoang Interchangeable speaker assembly and method of use
US20190052966A1 (en) * 2017-08-10 2019-02-14 Audio-Technica Corporation Headphone
US20200045402A1 (en) * 2018-08-02 2020-02-06 EVA Automation, Inc. Headphone with Multiple Acoustic Paths
US11032638B2 (en) * 2019-07-16 2021-06-08 Ngai Fun Cheung Speaker with an integrated air pressure and vibration mitigation system
US20220038812A1 (en) * 2020-07-31 2022-02-03 Yamaha Corporation Headphones
US20220248117A1 (en) * 2021-02-03 2022-08-04 Kingston Technology Corporation Low profile acoustic chambers for headset audio systems
USD968364S1 (en) * 2020-06-22 2022-11-01 Apple Inc. Component for a headphone
US20220353596A1 (en) * 2021-04-30 2022-11-03 Panasonic Intellectual Property Management Co., Ltd. Headset and ear pad
USD1068724S1 (en) * 2025-01-22 2025-04-01 Yue Zhuge Headphone

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133247B (en) * 1982-12-24 1987-10-28 Plessey Co Plc Transducers
AT377664B (de) * 1983-05-26 1985-04-25 Akg Akustische Kino Geraete Ohrpolster
US4727583A (en) * 1986-10-28 1988-02-23 Motorola, Inc. Telephone transducer with improved frequency response
GB2445388B (en) * 2007-02-16 2009-01-07 Sonaptic Ltd Ear-worn speaker-carrying devices
GB2454605B (en) * 2007-02-16 2010-05-26 Wolfson Microelectronics Plc Ear-worn speaker-carrying devices
CN103442313B (zh) * 2013-08-26 2016-12-28 郁志曰 一种带前阻尼障板耳机
JP6321873B1 (ja) * 2017-10-04 2018-05-09 リオン株式会社 ヘッドホン
WO2020189054A1 (ja) * 2019-03-18 2020-09-24 ソニー株式会社 ヘッドホン

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US2363175A (en) * 1942-08-26 1944-11-21 Frederick M Grossman Electrically and acoustically excited hearing aid
US3112005A (en) * 1960-07-28 1963-11-26 Ca Nat Research Council Earphones
US3157750A (en) * 1960-07-15 1964-11-17 Akg Akustische Kino Geraete Dynamic headphone
US3586794A (en) * 1967-11-04 1971-06-22 Sennheiser Electronic Earphone having sound detour path

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2363175A (en) * 1942-08-26 1944-11-21 Frederick M Grossman Electrically and acoustically excited hearing aid
US3157750A (en) * 1960-07-15 1964-11-17 Akg Akustische Kino Geraete Dynamic headphone
US3112005A (en) * 1960-07-28 1963-11-26 Ca Nat Research Council Earphones
US3586794A (en) * 1967-11-04 1971-06-22 Sennheiser Electronic Earphone having sound detour path

Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892927A (en) * 1973-09-04 1975-07-01 Theodore Lindenberg Full range electrostatic loudspeaker for audio frequencies
US4005278A (en) * 1974-09-16 1977-01-25 Akg Akustische U. Kino-Gerate Gesellschaft M.B.H. Headphone
USB554594I5 (enrdf_load_stackoverflow) * 1975-03-03 1976-01-20
US3985960A (en) * 1975-03-03 1976-10-12 Bell Telephone Laboratories, Incorporated Stereophonic sound reproduction with acoustically matched receiver units effecting flat frequency response at a listener's eardrums
US4058688A (en) * 1975-05-27 1977-11-15 Matsushita Electric Industrial Co., Ltd. Headphone
US3995113A (en) * 1975-07-07 1976-11-30 Okie Tani Two-way acoustic communication through the ear with acoustic and electric noise reduction
US3999020A (en) * 1975-10-29 1976-12-21 Koss Corporation Transducer with variable frequency response
US4437538A (en) 1982-03-30 1984-03-20 Ingemar Ohlsson Ear-cap
US4529057A (en) * 1982-04-13 1985-07-16 The Marconi Company Limited Ear defenders
US5243747A (en) * 1990-04-05 1993-09-14 Etablissements Mesnel Vibrating device for putting a u-section in place on a rim of a frame of a motor vehicle body
EP0589623A3 (en) * 1992-09-25 1994-04-13 Sony Corporation Headphone
US5497427A (en) * 1992-09-25 1996-03-05 Sony Corporation Headphone
USRE37398E1 (en) * 1992-09-25 2001-10-02 Sony Corporation Headphone
US6134336A (en) * 1998-05-14 2000-10-17 Motorola, Inc. Integrated speaker assembly of a portable electronic device
EP1197123A4 (en) * 1999-07-06 2006-12-20 Lin Chung Yu EARRING DEVICE WITHOUT IMPULSE RUSH AND AMBIANCE RUSH BLOCKADE
EP1338172A4 (en) * 2000-10-13 2006-06-07 Mm Gear Co Ltd HELMET ACCESSORY
US6470088B2 (en) * 2000-12-27 2002-10-22 Koninklijke Philips Electronics, N.V. Vented loudspeaker enclosure with limited driver radiation
US6856690B1 (en) 2002-01-09 2005-02-15 Plantronis, Inc. Comfortable earphone cushions
US6785395B1 (en) 2003-06-02 2004-08-31 Motorola, Inc. Speaker configuration for a portable electronic device
US20090226023A1 (en) * 2008-03-07 2009-09-10 Kabushiki Kaisha Audio-Technica Headphone
US8199955B2 (en) * 2008-03-07 2012-06-12 Kabushiki Kaisha Audio-Technica Headphones with a pressure controlling mechanism
US20090250290A1 (en) * 2008-04-03 2009-10-08 Mann+Hummel Gmbh Device for Noise Transmisson in a Motor Vehicle
US7658263B2 (en) * 2008-04-03 2010-02-09 Mann + Hummel Gmbh Device for noise transmission in a motor vehicle
US20100284558A1 (en) * 2009-05-08 2010-11-11 Tominori Kimura Earmuff and Headphone
US20100331058A1 (en) * 2009-06-30 2010-12-30 Yao Qingshan Apparatus including an earpiece speaker module
US8913738B2 (en) * 2009-06-30 2014-12-16 Nokia Corporation Apparatus with wideband earpiece response
US8582796B2 (en) * 2009-07-06 2013-11-12 Kabushiki Kaisha Audio-Technica Earmuff and headphone
US20110002475A1 (en) * 2009-07-06 2011-01-06 Kabushiki Kaisha Audio-Technica Earmuff and headphone
US8011469B2 (en) * 2009-12-18 2011-09-06 Mann & Hummel Gmbh Tunable sound transmission device for a motor vehicle
US20110147116A1 (en) * 2009-12-18 2011-06-23 Mann+Hummel Gmbh Tunable sound transmission device for a motor vehicle
US20120308067A1 (en) * 2011-06-01 2012-12-06 Wai Hung Ip Headphone 3D Hearing technology
TWI457009B (zh) * 2011-12-02 2014-10-11 Giga Byte Tech Co Ltd 耳機耳殼及耳機
US8588453B1 (en) * 2012-09-04 2013-11-19 Eastern Technologies Holding Limited Reverse-direction co-axial earphone
USD709050S1 (en) * 2012-11-21 2014-07-15 Zound Industries International Ab Parts of marshall monitor headphone
USD729195S1 (en) 2012-11-21 2015-05-12 Zound Industries International Ab Parts of marshall monitor headphone
US10034112B2 (en) 2014-07-25 2018-07-24 Skullcandy, Inc. Mass port plug for customizing headphone drivers, and related methods
US10397719B2 (en) 2014-07-25 2019-08-27 Skullcandy, Inc. Ported headphones and related methods
EP3195612A4 (en) * 2014-09-04 2018-05-30 Harman International Industries, Incorporated Headphone ear cushion
US10291979B2 (en) 2014-09-04 2019-05-14 Harman International Industries Incorporated Headphone ear cushion
US9800978B2 (en) 2014-12-31 2017-10-24 Skullcandy, Inc. Audio driver assemblies, headphones including the audio driver assemblies, and related methods
US20180027317A1 (en) * 2016-07-19 2018-01-25 Tymphany Hk Limited Closed acoustical architecture having a controlled leakage
CN107635165A (zh) * 2016-07-19 2018-01-26 迪芬尼香港有限公司 具有受控泄漏的封闭声学架构
US10327055B2 (en) * 2016-07-19 2019-06-18 Tymphany Hk Limited Closed acoustical architecture having a controlled leakage
US10154335B1 (en) * 2016-09-06 2018-12-11 Minh Dung Hoang Interchangeable speaker assembly and method of use
US20190052966A1 (en) * 2017-08-10 2019-02-14 Audio-Technica Corporation Headphone
US10623847B2 (en) * 2018-08-02 2020-04-14 EVA Automation, Inc. Headphone with multiple acoustic paths
US20200045402A1 (en) * 2018-08-02 2020-02-06 EVA Automation, Inc. Headphone with Multiple Acoustic Paths
US11032638B2 (en) * 2019-07-16 2021-06-08 Ngai Fun Cheung Speaker with an integrated air pressure and vibration mitigation system
USD1018499S1 (en) 2020-06-22 2024-03-19 Apple Inc. Component for a headphone
USD968364S1 (en) * 2020-06-22 2022-11-01 Apple Inc. Component for a headphone
USD991217S1 (en) * 2020-06-22 2023-07-04 Apple Inc. Component for a headphone
USD1057682S1 (en) 2020-06-22 2025-01-14 Apple Inc. Component for a headphone
US20220038812A1 (en) * 2020-07-31 2022-02-03 Yamaha Corporation Headphones
US11647325B2 (en) * 2020-07-31 2023-05-09 Yamaha Corporation Headphones
US20220248117A1 (en) * 2021-02-03 2022-08-04 Kingston Technology Corporation Low profile acoustic chambers for headset audio systems
US20220353596A1 (en) * 2021-04-30 2022-11-03 Panasonic Intellectual Property Management Co., Ltd. Headset and ear pad
US11924599B2 (en) * 2021-04-30 2024-03-05 Panasonic Intellectual Property Management Co., Ltd. Headset and ear pad
USD1068724S1 (en) * 2025-01-22 2025-04-01 Yue Zhuge Headphone

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GB1301014A (en) 1972-12-29
DE2006249A1 (de) 1970-08-20
NL7001438A (enrdf_load_stackoverflow) 1970-08-19
FR2031469A1 (enrdf_load_stackoverflow) 1970-11-20

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