WO2016184093A1 - 一种电声转换装置 - Google Patents
一种电声转换装置 Download PDFInfo
- Publication number
- WO2016184093A1 WO2016184093A1 PCT/CN2015/097754 CN2015097754W WO2016184093A1 WO 2016184093 A1 WO2016184093 A1 WO 2016184093A1 CN 2015097754 W CN2015097754 W CN 2015097754W WO 2016184093 A1 WO2016184093 A1 WO 2016184093A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diaphragm
- conductive line
- piezoelectric sheet
- piezoelectric
- electroacoustic conversion
- Prior art date
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 19
- 230000005236 sound signal Effects 0.000 claims abstract description 15
- 230000004044 response Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 239000002861 polymer material Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
- H04R23/02—Transducers using more than one principle simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/0292—Electrostatic transducers, e.g. electret-type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
- B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
- B06B1/0648—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element of rectangular shape
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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
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
-
- 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
- H04R9/04—Construction, mounting, or centering of coil
-
- 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
- H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
-
- 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 an electroacoustic conversion device.
- a conventional moving coil receiver (Receiver) and a speaker (Speaker) are hereinafter collectively referred to as a moving coil type electroacoustic transducer. Regardless of whether it is applied to a mobile phone or a headset, the high-frequency frequency response curve of the receiver will drop rapidly at 6k-9kHz, and the high-frequency frequency response curve of the speaker will also drop rapidly after a dozen KHz, which is also said. High frequency cutoff frequency. Due to the limitations of the materials and processes of the moving coil electroacoustic converter, the high frequency cutoff frequency is difficult to increase.
- the present invention provides an electroacoustic conversion device comprising: a vibration system and a magnetic circuit system having a magnetic gap; the vibration system comprising: a diaphragm coupled to the diaphragm and suspended in the magnetic gap a voice coil, a piezoelectric sheet coupled to one side of the diaphragm; a conductive line formed on the diaphragm, the conductive line including a first conductive line, the first conductive line being connected to the piezoelectric sheet
- the externally input first audio signal is connected to the piezoelectric sheet via the first conductive line.
- the piezoelectric sheet is located above or below the diaphragm.
- the piezoelectric sheet is located above the diaphragm, and the first conductive line is formed on an upper surface of the diaphragm.
- the conductive circuit further includes a second conductive line, the second conductive line and the The voice coil is connected to connect an externally input second audio signal to the voice coil via the second conductive line.
- the second conductive line is formed on a lower surface of the diaphragm.
- the piezoelectric sheet is bonded to a central position of the diaphragm.
- the diaphragm includes a centrally located planar portion and a folded portion at an edge of the planar portion, and the piezoelectric sheet is disposed at a position of a planar portion of the diaphragm.
- the conductive circuit is plated on the diaphragm; or the conductive line is etched by a flexible circuit board compounded on the diaphragm.
- the housing further includes a housing that houses the vibration system and the magnetic circuit system, and the housing is injection molded with an electrical connection, and the conductive circuit is connected to an external circuit through the electrical connection.
- the electrical connection portion comprises any one or combination of the following: a spring piece, a spring connector, a flexible circuit board.
- the inventors of the present invention have found that there is no ultra-wideband electroacoustic conversion device in combination with a moving coil type sounding structure in the prior art. Therefore, the technical task to be achieved by the present invention or the technical problem to be solved is not thought of or expected by those skilled in the art, so the present invention is a new technical solution.
- the electroacoustic conversion device of the invention has both a moving coil type sounding structure and a piezoelectric type sounding structure, and the piezoelectric sheet compensates the high frequency frequency response of the vibration system, thereby realizing a super-wideband electroacoustic performance with good performance.
- Conversion device Preferably or alternatively, the present invention forms a first conductive line on the diaphragm to connect an externally input first audio signal to the piezoelectric sheet, the wiring being ingenious and easy to implement.
- the piezoelectric sheet of the present invention is disposed at the center of the diaphragm and functions to reinforce the diaphragm.
- FIG. 1 is a schematic structural view of an embodiment of an electroacoustic conversion device of the present invention.
- FIG. 2 is a schematic view showing the structure of a diaphragm provided with a first conductive line of the present invention.
- Figure 3 is a front elevational view of an embodiment of an electroacoustic transducer device of the present invention.
- Figure 4 is a rear elevational view of an embodiment of an electroacoustic transducer of the present invention.
- the electroacoustic conversion device of the present invention includes a vibration system, a magnetic circuit system, and an outer casing that houses the fixed vibration system and the magnetic circuit system.
- the magnetic circuit system includes a washer, a magnet, a basin frame, etc., which are fixed from top to bottom.
- the magnet may include a central magnet and a side magnet.
- the washer may include a center washer and a side washer, a center magnet and a side.
- the gap between the magnets is the magnetic gap.
- the vibration system includes a diaphragm, a voice coil coupled under the diaphragm and suspended in the magnetic gap, and a piezoelectric sheet coupled to one side of the diaphragm.
- a first conductive line and a second conductive line are formed on the diaphragm, and the first audio signal is connected to the piezoelectric piece via the first conductive line, and the piezoelectric film drives the diaphragm to vibrate and sound.
- the second audio signal is connected to the voice coil via the second conductive line, and the voice coil vibrates and sounds under the action of the magnetic field.
- the two channels of audio signals have the same source, but the power of the first channel of the audio signal through the power amplifier circuit will be relatively large.
- the combination of the moving coil type sounding device and the piezoelectric sounding device is realized, and since the high frequency cutoff frequency of the piezoelectric sounding device can reach 16 kHz or more, an ultra-wideband electroacoustic conversion is realized. Device.
- the piezoelectric sheet can be placed at the center of the diaphragm, so that the piezoelectric sheet can function as a diaphragm reinforcement or DOME, and the piezoelectric sheet can be bonded above or below the diaphragm.
- DOME diaphragm reinforcement
- an embodiment of the electroacoustic conversion device of the present invention includes, in order from top to bottom, a front cover 1, a piezoelectric sheet 2, a diaphragm 3, a voice coil 4, a frame body, and a magnetic circuit system 5. .
- the magnetic circuit system has a magnetic gap
- the front cover 1 and the frame constitute an outer casing for housing the fixed vibration system and the magnetic circuit system, and the magnetic circuit system and the frame are schematically integrated in FIG.
- the piezoelectric sheet 2, the diaphragm 3, and the voice coil 4 constitute a vibration system.
- the diaphragm 3 includes a centrally located flat portion 301, a folded loop portion 302 at the edge of the flat portion, and a fixed portion 303 fixed to the outer periphery at the outermost periphery.
- the piezoelectric sheet 2 is disposed above the flat portion 301 of the diaphragm 3 and bonded to the diaphragm 3, so that the piezoelectric sheet 2 can function as a diaphragm reinforcing portion or DOME.
- Figure 1 is an exploded view showing the voice coil 4 suspended in the magnetic gap of the magnetic circuit system after assembly.
- the first conductive line 100 is formed on the upper surface of the diaphragm 3 for connecting an externally input first audio signal to the piezoelectric sheet 2.
- a second conductive path (not shown) is formed on the lower surface of the diaphragm 3 for connecting an externally input second audio signal to the voice coil 4.
- the conductive line may be plated on the diaphragm or etched from a flexible circuit board (FPC) laminated on the diaphragm.
- the diaphragm comprises a polymer material layer; the conductive circuit may be plated on the polymer material layer or may be etched from a flexible circuit board laminated on the polymer material layer. In order to be simple in process, the diaphragm can be pressed from the diaphragm material which has been laid with conductive lines.
- An electrical connection portion is injection molded on the outer casing.
- an electrical connection portion may be drawn from the back surface of the electroacoustic conversion device (ie, the side closer to the magnetic circuit system) to be connected to the external circuit, wherein the two An electrical connection portion 11 is used to connect the first conductive line 100 and an external circuit for access The first audio signal, the two second electrical connections 12 are used to connect the second conductive line and the external circuit to access the second audio signal.
- the electrical connection part comprises any one or combination of the following: a spring piece, a spring connector (Pogopin), a spring, a flexible circuit board.
- the electroacoustic conversion device of the invention has both a moving coil type sounding structure and a piezoelectric type sounding structure, and the piezoelectric sheet compensates the high frequency frequency response of the vibration system, thereby realizing a super-wideband electroacoustic performance with good performance.
- Conversion device Preferably or alternatively, the present invention forms a first conductive line on the diaphragm to connect an externally input first audio signal to the piezoelectric sheet, the wiring being ingenious and easy to implement.
- the piezoelectric sheet of the present invention is disposed at the center of the diaphragm and functions to reinforce the diaphragm.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Electromagnetism (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
Claims (10)
- 一种电声转换装置,其特征在于,包括:振动***和具有磁间隙的磁路***;所述振动***包括:振膜(3)、结合于所述振膜(3)下方并且悬置于所述磁间隙中的音圈(4)、结合于所述振膜(3)一侧的压电片(2);所述振膜(3)上形成有导电线路,所述导电线路包括第一导电线路,所述第一导电线路与所述压电片(2)连接以将外部输入的第一路音频信号经由所述第一导电线路接入所述压电片(2)。
- 根据权利要求1所述的装置,其特征在于,所述压电片(2)位于所述振膜(3)的上方或者下方。
- 根据权利要求1-2任一项所述的装置,其特征在于,所述压电片(2)位于所述振膜(3)的上方,所述第一导电线路形成于所述振膜(3)的上表面。
- 根据权利要求1-3任一项所述的装置,其特征在于,所述导电线路还包括第二导电线路,所述第二导电线路与所述音圈(4)连接以将外部输入的第二路音频信号经由所述第二导电线路接入所述音圈(4)。
- 根据权利要求1-4任一项所述的装置,其特征在于,所述第二导电线路形成于所述振膜(3)的下表面。
- 根据权利要求1-5任一项所述的装置,其特征在于,所述压电片(2)结合于所述振膜(3)的中心位置。
- 根据权利要求1-6任一项所述的装置,其特征在于,所述振膜(3)包括位于中心的平面部(301)和位于所述平面部(301)边缘的折环部(302),所述压电片(2)设置于所述振膜(3)的平面部(301)的位置。
- 根据权利要求1-7任一项所述的装置,其特征在于,所述导电线路电镀于所述振膜(3)上;或者所述导电线路是由复合在所述振膜(3)上的柔性线路板蚀刻而成。
- 根据权利要求1-8任一项所述的装置,其特征在于,还包括收容固定所述振动***和磁路***的外壳,所述外壳上注塑有电连接部,所述导 电线路通过所述电连接部与外部电路连接。
- 根据权利要求1-9任一项所述的装置,其特征在于,所述电连接部包括下列任一或组合:弹片、弹簧连接器、柔性线路板。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/552,677 US10225664B2 (en) | 2015-05-21 | 2015-12-17 | Electrical-acoustic transformation device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510263316.4A CN104869508A (zh) | 2015-05-21 | 2015-05-21 | 一种电声转换装置 |
CN201510263316.4 | 2015-05-21 |
Publications (1)
Publication Number | Publication Date |
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WO2016184093A1 true WO2016184093A1 (zh) | 2016-11-24 |
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ID=53914941
Family Applications (1)
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PCT/CN2015/097754 WO2016184093A1 (zh) | 2015-05-21 | 2015-12-17 | 一种电声转换装置 |
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US (1) | US10225664B2 (zh) |
CN (1) | CN104869508A (zh) |
WO (1) | WO2016184093A1 (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104869508A (zh) | 2015-05-21 | 2015-08-26 | 歌尔声学股份有限公司 | 一种电声转换装置 |
US10560778B2 (en) * | 2015-09-29 | 2020-02-11 | Coleridge Design Associates Llc | System and method for a loudspeaker with a diaphragm |
US10321235B2 (en) * | 2016-09-23 | 2019-06-11 | Apple Inc. | Transducer having a conductive suspension member |
CN107124687B (zh) * | 2017-03-30 | 2019-05-07 | 歌尔股份有限公司 | 具有连接弹片的产品的注塑成型方法、扬声器及电子设备 |
CN109391881B (zh) * | 2017-11-30 | 2024-01-19 | 深圳市吉瑞德隆电子科技有限公司 | 平面振膜喇叭 |
CN208638620U (zh) * | 2018-08-01 | 2019-03-22 | 瑞声科技(新加坡)有限公司 | 微型发声器件 |
CN113055794B (zh) * | 2019-12-28 | 2022-12-02 | 华为技术有限公司 | 扬声器内核、扬声器模组和电子设备 |
CN112887865B (zh) * | 2021-01-27 | 2024-01-05 | 维沃移动通信有限公司 | 无线耳机 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201533406U (zh) * | 2009-10-12 | 2010-07-21 | 萧进明 | 扬声器 |
CN102281488A (zh) * | 2011-06-02 | 2011-12-14 | 广州市锐丰音响科技股份有限公司 | 一种双换能方式组合同轴全频扬声器 |
CN202310082U (zh) * | 2011-11-01 | 2012-07-04 | 北京七九七华音电子有限责任公司 | 宽频带扬声器 |
CN202799117U (zh) * | 2012-08-02 | 2013-03-13 | 歌尔声学股份有限公司 | 电声换能器 |
US20150010173A1 (en) * | 2013-07-05 | 2015-01-08 | Qualcomm Incorporated | Apparatus and method for providing a frequency response for audio signals |
CN204305300U (zh) * | 2014-08-06 | 2015-04-29 | 捷音特科技股份有限公司 | 双频同轴耳机 |
CN104869508A (zh) * | 2015-05-21 | 2015-08-26 | 歌尔声学股份有限公司 | 一种电声转换装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI492641B (zh) * | 2012-11-13 | 2015-07-11 | Cotron Corp | 振動元件 |
CN204598295U (zh) * | 2015-05-21 | 2015-08-26 | 歌尔声学股份有限公司 | 一种电声转换装置 |
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2015
- 2015-05-21 CN CN201510263316.4A patent/CN104869508A/zh active Pending
- 2015-12-17 US US15/552,677 patent/US10225664B2/en active Active
- 2015-12-17 WO PCT/CN2015/097754 patent/WO2016184093A1/zh active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201533406U (zh) * | 2009-10-12 | 2010-07-21 | 萧进明 | 扬声器 |
CN102281488A (zh) * | 2011-06-02 | 2011-12-14 | 广州市锐丰音响科技股份有限公司 | 一种双换能方式组合同轴全频扬声器 |
CN202310082U (zh) * | 2011-11-01 | 2012-07-04 | 北京七九七华音电子有限责任公司 | 宽频带扬声器 |
CN202799117U (zh) * | 2012-08-02 | 2013-03-13 | 歌尔声学股份有限公司 | 电声换能器 |
US20150010173A1 (en) * | 2013-07-05 | 2015-01-08 | Qualcomm Incorporated | Apparatus and method for providing a frequency response for audio signals |
CN204305300U (zh) * | 2014-08-06 | 2015-04-29 | 捷音特科技股份有限公司 | 双频同轴耳机 |
CN104869508A (zh) * | 2015-05-21 | 2015-08-26 | 歌尔声学股份有限公司 | 一种电声转换装置 |
Also Published As
Publication number | Publication date |
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US20180041844A1 (en) | 2018-02-08 |
US10225664B2 (en) | 2019-03-05 |
CN104869508A (zh) | 2015-08-26 |
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