CN105657621A - Loudspeaker assembly and mobile terminal - Google Patents

Loudspeaker assembly and mobile terminal Download PDF

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Publication number
CN105657621A
CN105657621A CN201610189015.6A CN201610189015A CN105657621A CN 105657621 A CN105657621 A CN 105657621A CN 201610189015 A CN201610189015 A CN 201610189015A CN 105657621 A CN105657621 A CN 105657621A
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CN
China
Prior art keywords
cavity
film
loudspeaker assembly
vibrating diaphragm
speaker
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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.)
Granted
Application number
CN201610189015.6A
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Chinese (zh)
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CN105657621B (en
Inventor
严笔祥
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.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
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Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN201610189015.6A priority Critical patent/CN105657621B/en
Publication of CN105657621A publication Critical patent/CN105657621A/en
Application granted granted Critical
Publication of CN105657621B publication Critical patent/CN105657621B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

The invention discloses a loudspeaker assembly and a mobile terminal. The loudspeaker assembly comprises a loudspeaker and a shell for containing the loudspeaker. The shell is a hollow cavity, and a first sound outlet hole is formed in the top wall of the shell. A vibrating diaphragm for generating sound waves is embedded into the top of the loudspeaker, and the first sound outlet hole is formed above the vibrating diaphragm. The shell is divided by the vibrating diaphragm into a first cavity and a second cavity separated from the first cavity. The first cavity is a closed cavity, and the first sound outlet hole is formed in the second cavity. The loudspeaker assembly further comprises a first film for receiving the sound waves, and a closed vibration cavity is formed between the first film and the loudspeaker. According to the loudspeaker assembly, the low sound and loudness of the loudspeaker can be improved, and the sound effect can be improved well.

Description

A kind of loudspeaker assembly and mobile terminal
Technical field
The present invention relates to speaker field, particularly relate to a kind of loudspeaker assembly and mobile terminal.
Background technology
In recent years, along with the development of the intelligent terminal such as mobile phone, panel computer, termination function is also day by day perfect, and such as, user can carry out video-see by terminal, multinomial recreation of listening to music or voice-enabled chat etc., is greatly enriched the life of people.
Current mobile phone, typically via arranging rear sound chamber enclosed speaker module to realize sound-electric conversion. This speaker module generally includes loudspeaker monomer and the shell arranged around loudspeaker monomer, vibrational system that this loudspeaker monomer includes being provided with vibrating diaphragm and voice coil loudspeaker voice coil and for forming the magnetic circuit system of the magnetic gap housing voice coil loudspeaker voice coil, the front sound chamber and rear sound chamber that are separated from each other is formed between vibrating diaphragm and shell, front sound chamber connects with the acoustic aperture that goes out on shell, and the cavity in rear sound chamber seals.
During work, voice coil loudspeaker voice coil drives diaphragm oscillations sounding, this sound transmits mainly through two paths, a part of sound before vibrating diaphragm is through front sound chamber and goes out acoustic aperture and enters the external world, thus being heard by human ear, the sound at the vibrating diaphragm back side then conducts sound chamber after entrance, but owing to front sound cavity space is limited, then the sound of sound intracavity cannot spread out of again, causes that the bass tonequality of mobile phone speaker and loudness are poor, has a strong impact on playback.
Summary of the invention
It is an object of the invention to provide a kind of loudspeaker assembly and mobile terminal, the technical problem poor to solve loudspeaker assembly bass effect in existing mobile phone.
For solving above-mentioned technical problem, the embodiment of the present invention provides techniques below scheme:
A kind of loudspeaker assembly, comprising:
Speaker and for holding the housing of described speaker, described housing is hollow cavity, its roof offers first and goes out acoustic aperture; The top of described speaker is embedded with the vibrating diaphragm for producing sound wave, and described first goes out acoustic aperture is positioned at the top of described vibrating diaphragm; Described housing is separated into the first cavity separated from one another and the second cavity by described vibrating diaphragm, and described first cavity is closed cavity, and described first goes out acoustic aperture is positioned at described second cavity; Described loudspeaker assembly also includes the first film for receiving described sound wave, is formed with an airtight vibration cavity between described the first film and described speaker.
Further, described the first film is positioned at described second cavity, for receiving the sound wave in described second cavity.
Further, described the first film is fixed on the end face of described housing, and is positioned at described first and goes out above acoustic aperture, and described vibration cavity is described vibrating diaphragm, first goes out the closed cavity surrounded between acoustic aperture and the first film.
Further, described loudspeaker assembly also includes the sealing member for sealing described first cavity, and described sealing member and described the first film are all folded between the end face of described speaker and the roof of described housing.
Further, described the first film is folded between described sealing member and described roof, and described vibration cavity is the closed cavity surrounded between described vibrating diaphragm, sealing member and the first film.
Further, described the first film is folded between end face and the sealing member of described speaker, and described vibration cavity is the closed cavity surrounded between described vibrating diaphragm and the first film.
Further, the longitudinal section, top of described speaker is spill.
Further, described roof is further opened be positioned at the second of described first cavity and goes out acoustic aperture; Described the first film is positioned at described first cavity, is used for sealing described second and goes out acoustic aperture, and described the first film receives the sound wave in described first cavity; Described vibration cavity is described first cavity.
Further, described second goes out acoustic aperture and the first film is equipped with multiple.
Further, described loudspeaker assembly also includes for sealing the described first the second thin film going out acoustic aperture, and described second thin film is positioned at described second cavity, for receiving the sound wave in described second cavity.
For solving above-mentioned technical problem, the embodiment of the present invention also provides for techniques below scheme:
A kind of mobile terminal, described mobile terminal includes the loudspeaker assembly described in above-mentioned any one.
Loudspeaker assembly of the present invention, it is embedded with the speaker of vibrating diaphragm by arranging top and holds the housing of speaker and for receiving the first film of the sound wave that vibrating diaphragm produces, and make one airtight vibration cavity of formation between the first film and speaker, bass and the loudness of speaker can be promoted, improve audio preferably.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is described in detail, technical scheme and other beneficial effect will be made apparent.
Fig. 1 is the structural representation of the loudspeaker assembly that first embodiment of the invention provides.
The structural representation of the loudspeaker assembly that Fig. 2 provides for second embodiment of the invention.
The structural representation of the loudspeaker assembly that Fig. 3 provides for third embodiment of the invention.
The structural representation of the loudspeaker assembly that Fig. 4 provides for fourth embodiment of the invention.
The structural representation of the loudspeaker assembly that Fig. 5 provides for fifth embodiment of the invention.
Detailed description of the invention
For making the technical problem to be solved, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated. Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 1, Fig. 1 and specifically describe the loudspeaker assembly that first embodiment of the invention provides, it includes speaker 1 and for holding the housing 2 of this speaker 1, and this housing 2 is hollow cavity, its roof 21 offers first and goes out acoustic aperture 211. The top of this speaker 1 is embedded with the vibrating diaphragm (not shown) for producing sound wave, and this first goes out acoustic aperture 211 and be positioned at the top of this vibrating diaphragm.This housing 2 is separated into the first cavity A separated from one another and the second cavity B by this vibrating diaphragm, and this first cavity A is closed cavity, and this first goes out acoustic aperture 211 and be positioned at this second cavity B. This loudspeaker assembly also includes the first film 3 for receiving this sound wave, is formed with an airtight vibration cavity between this first film 3 and this speaker 1.
In the present embodiment, this vibrating diaphragm and the first film 3 can adopt the material such as polyethylene or polypropylene to make. This loudspeaker assembly can also include flexible PCB 4, this speaker 1 can also include magnet steel (not shown), voice coil loudspeaker voice coil (not shown) and metal clips 11, this magnet steel is embedded at the bottom of this speaker 1, and this magnet steel and this flexible PCB 4 are electrically connected by this metal clips 11.
During work, being energized to magnet steel by flexible PCB 4, produce the electromagnetic field of respective change according to the power of electric current and frequency, the electromagnetic field of this change makes voice coil loudspeaker voice coil produce vibration, and then drive vibrating diaphragm moves up and down and produces sound wave. This sound wave transmits mainly through two paths: is positioned at the sound wave before vibrating diaphragm and goes out acoustic aperture 211 via the second cavity B and the first and be transferred into the ear of people; It is positioned at vibrating diaphragm sound wave below and is then sent to the first cavity A, and because of the iris action of airtight cavity wall in this first cavity A, therefore the sound wave of this part cannot be delivered to human ear.
Sound wave before vibrating diaphragm carries out in the process transmitted, rapid outwardly space divergence after leaving vibrating diaphragm due to this acoustic wave segment, small-signal sound wave is easily fallen by air damping, thus causing that low-frequency effect is poor, for promoting the low-frequency effect of speaker 1 as much as possible, it is possible to again to external radiation after making the sound wave being positioned at before vibrating diaphragm transmit via the first film 3, namely, this the first film 3 is positioned at the second cavity B, for receiving the sound wave in this second cavity B. This setup makes vibrating diaphragm and the second cavity B be connected by the first film 3, utilizes acoustic resistance coupling mechanism, makes sound wave indirec radiation, thus reaching to improve the purpose of bass tonequality and loudness, improves low-frequency effect.
Concrete, this first film 3 is fixed on the end face of this housing 2, and is positioned at this and first goes out above acoustic aperture 211, and this vibration cavity is this vibrating diaphragm, first goes out the closed cavity surrounded between acoustic aperture 211 and the first film 3. When diaphragm oscillations produces sound wave, it is positioned at after sound wave before vibrating diaphragm is delivered to the first film 3 via vibration cavity, by the first film 3 to external radiation. Preferably, this first film 3 can be fixed on the end face of this housing 2 by the mode bonded.
In the present embodiment, for avoiding first to go out poor sealing between acoustic aperture 211 and the first cavity A, this loudspeaker assembly could be included for sealing the sealing member 5 of this first cavity A, and this sealing member 5 and this first film 3 are all folded between the end face of this speaker 1 and the roof 21 of this housing 2. Now, this vibration cavity is this vibrating diaphragm, first goes out the confined space surrounded between acoustic aperture 211, sealing member 5 and the first film 3. Preferably, this sealing member 5 can be fixed on the end face of speaker 1 by the mode bonded.
Preferably, this first film 3 set-up mode in the second cavity B is not limited to that this first film 3 is arranged at first and goes out above acoustic aperture 211, and it can also be arranged on first and go out below acoustic aperture 211, and concrete set-up mode refers to Fig. 2 and Fig. 3.
Refer to Fig. 2, Fig. 2 specifically describes the loudspeaker assembly that second embodiment of the invention provides, wherein, this first film 3 is folded between this sealing member 5 and this roof 21, and this vibration cavity is the closed cavity surrounded between this vibrating diaphragm, sealing member 5 and the first film 3.
Referring to Fig. 3, Fig. 3 and specifically describe the loudspeaker assembly that third embodiment of the invention provides, wherein, this first film 3 is folded between the end face of this speaker 1 and sealing member 5, and this vibration cavity is the closed cavity surrounded between this vibrating diaphragm and the first film 3. Preferably, the longitudinal section, top of this speaker 1 is spill, to guarantee to there is enough vibration gaps between the vibrating diaphragm of this speaker and the first film 3.
It should be noted that, this the first film 3 above-mentioned three kinds of set-up modes in the second cavity B can not only improve bass tonequality and the audio of speaker 1 preferably, and can also prevent the water in the external world and dust from going out acoustic aperture 211 by first and entering speaker 1 inside, play the effect of water proof and dust proof.
In addition, for reaching to improve the purpose of speaker bass audio, this the first film 3 is not limited to be arranged in the second cavity B, bass audio (concrete set-up mode is referred to above-described embodiment one, two and three) is improved by acoustic resistance coupling mechanism, it can also be arranged in the first cavity A, improves bass audio by improving sound wave utilization rate.
Concrete, in the process that sound wave transmits, owing to the sound wave being positioned at after vibrating diaphragm cannot be delivered to human ear by the first airtight cavity A, therefore generally this acoustic wave segment is not used, thus causing that the lower frequency limit of whole sound system is higher, bass effect is poor. For improving the utilization rate of this acoustic wave segment, it is possible to be arranged in the first cavity A by this first film 3, in order to receive this and be positioned at vibrating diaphragm sound wave below, this first cavity A is made to form a passive radiator. Radiative acoustic wave that the vibration of this passive radiator produces and be positioned at the sound wave before vibrating diaphragm and be in duty in the same direction, by complex sound this passive radiator the form of quality resonance genial utilizing air in the first cavity A and housing 2 to collectively form, thus strengthening low sonority, improving bass audio, its implementation can be such that
Refer to Fig. 4, Fig. 4 describes the loudspeaker assembly that fourth embodiment of the invention provides, and this loudspeaker assembly is different in that with embodiment one, embodiment two and embodiment three: is further opened with being positioned at the second of this first cavity A on this roof 21 and goes out acoustic aperture 212. This first film 3 is positioned at this first cavity A, is used for sealing this and second goes out acoustic aperture 212, and this first film 3 receives the sound wave in this first cavity A, and now, this vibration cavity is this first cavity A. Preferably, this first film 3 may be mounted at this second surface or underface going out acoustic aperture 212. This second goes out acoustic aperture 212 and the first film 3 all can be provided with multiple.
In the process that sound wave transmits, when being positioned at the sound wave after vibrating diaphragm and being sent to the first cavity A, the vibration of air in the first cavity A can be caused, this vibration is further driven to the first film 3 and moves up and down, thus producing and be positioned at the sound wave before vibrating diaphragm to be in the radiative acoustic wave of duty in the same direction, this radiative acoustic wave is outwards propagated together with being positioned at the sound wave before vibrating diaphragm, forms resonance, effectively enhances low sonority.
Preferably, loudspeaker assembly of the present invention is not limited to above-described embodiment one to embodiment four, and it can also is that other embodiments, for instance can be embodiment four respectively with the combination of embodiment one, embodiment two and embodiment three.
Preferably, refer to Fig. 5, Fig. 5 specifically describes the loudspeaker assembly that fifth embodiment of the invention provides, the difference is that only of this loudspeaker assembly and embodiment four: this loudspeaker assembly could be included for sealing this first the second thin film 6 going out acoustic aperture 211, this second thin film 6 is positioned at this second cavity B, for receiving the sound wave in this second cavity B.Concrete, this second thin film 6 is fixed on the end face of housing 2, and is positioned at first and goes out above acoustic aperture 211. Preferably, this second thin film 6 can adopt the material such as polyethylene or polypropylene to make, and this second thin film 6 can be fixed on the end face of housing 2 by the mode bonded.
It is easily understood that, this second thin film 6 mounting means in the second cavity B is not limited in above-described embodiment five second thin film 6 is arranged on first go out above acoustic aperture 211, it can also is that other modes, specifically it is referred in embodiment two and embodiment three the first film 3 mounting means in the second cavity B, will not be described in great detail herein.
Additionally, the embodiment of the present invention also provides for a kind of mobile terminal, this mobile terminal includes any one loudspeaker assembly above-mentioned. Preferably, this mobile terminal can be the electronic products such as mobile phone, panel computer and notebook computer.
From the above, loudspeaker assembly described in the embodiment of the present invention and mobile terminal, it is embedded with the speaker 1 of vibrating diaphragm by arranging top and holds the housing 2 of speaker 1 and for receiving the first film 3 of the sound wave that vibrating diaphragm produces, and make one airtight vibration cavity of formation between the first film 3 and speaker 1, bass and the loudness of speaker 1 can be promoted, improve audio preferably.
A kind of the loudspeaker assembly above embodiment of the present invention provided and mobile terminal are described in detail, principles of the invention and embodiment are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention; Simultaneously for those skilled in the art, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this specification content should not be construed as limitation of the present invention.

Claims (11)

1. a loudspeaker assembly, it is characterised in that including: speaker and for holding the housing of described speaker, described housing is hollow cavity, its roof offers first and goes out acoustic aperture; The top of described speaker is embedded with the vibrating diaphragm for producing sound wave, and described first goes out acoustic aperture is positioned at the top of described vibrating diaphragm; Described housing is separated into the first cavity separated from one another and the second cavity by described vibrating diaphragm, and described first cavity is closed cavity, and described first goes out acoustic aperture is positioned at described second cavity; Described loudspeaker assembly also includes the first film for receiving described sound wave, is formed with an airtight vibration cavity between described the first film and described speaker.
2. loudspeaker assembly according to claim 1, it is characterised in that described the first film is positioned at described second cavity, for receiving the sound wave in described second cavity.
3. loudspeaker assembly according to claim 2, it is characterized in that, described the first film is fixed on the end face of described housing, and is positioned at described first and goes out above acoustic aperture, and described vibration cavity is described vibrating diaphragm, first goes out the closed cavity surrounded between acoustic aperture and the first film.
4. loudspeaker assembly according to claim 2, it is characterized in that, described loudspeaker assembly also includes the sealing member for sealing described first cavity, and described sealing member and described the first film are all folded between the end face of described speaker and the roof of described housing.
5. loudspeaker assembly according to claim 4, it is characterised in that described the first film is folded between described sealing member and described roof, described vibration cavity is the closed cavity surrounded between described vibrating diaphragm, sealing member and the first film.
6. loudspeaker assembly according to claim 4, it is characterised in that described the first film is folded between end face and the sealing member of described speaker, and described vibration cavity is the closed cavity surrounded between described vibrating diaphragm and the first film.
7. loudspeaker assembly according to claim 6, it is characterised in that the longitudinal section, top of described speaker is spill.
8. loudspeaker assembly according to claim 1, it is characterised in that be further opened with being positioned at the second of described first cavity on described roof and go out acoustic aperture; Described the first film is positioned at described first cavity, is used for sealing described second and goes out acoustic aperture, and described the first film receives the sound wave in described first cavity; Described vibration cavity is described first cavity.
9. loudspeaker assembly according to claim 8, it is characterised in that described second goes out acoustic aperture and the first film is equipped with multiple.
10. loudspeaker assembly according to claim 8, it is characterised in that described loudspeaker assembly also includes for sealing the described first the second thin film going out acoustic aperture, and described second thin film is positioned at described second cavity, for receiving the sound wave in described second cavity.
11. a mobile terminal, it is characterised in that described mobile terminal includes the loudspeaker assembly in claim 1-10 as described in any one.
CN201610189015.6A 2016-03-29 2016-03-29 A kind of loudspeaker assembly and mobile terminal Expired - Fee Related CN105657621B (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610189015.6A CN105657621B (en) 2016-03-29 2016-03-29 A kind of loudspeaker assembly and mobile terminal

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CN105657621A true CN105657621A (en) 2016-06-08
CN105657621B CN105657621B (en) 2017-11-28

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111756903A (en) * 2020-07-01 2020-10-09 维沃移动通信有限公司 Speaker assembly and electronic device
WO2021128373A1 (en) * 2019-12-28 2021-07-01 瑞声声学科技(深圳)有限公司 Speaker module and terminal device
CN113873365A (en) * 2021-10-11 2021-12-31 歌尔科技有限公司 Sound box
WO2023092949A1 (en) * 2021-11-29 2023-06-01 北京小米移动软件有限公司 Sound production module and electronic device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201611942U (en) * 2010-01-29 2010-10-20 中山市天键电子工业有限公司 Waterproof earphone
CN102413392A (en) * 2010-09-26 2012-04-11 联想(北京)有限公司 Portable electronic equipment
CN202773037U (en) * 2012-09-07 2013-03-06 广东欧珀移动通信有限公司 Waterproof electronic product
JP2013138416A (en) * 2011-11-30 2013-07-11 Ube Ind Ltd Speaker unit
CN203368735U (en) * 2013-05-08 2013-12-25 歌尔声学股份有限公司 Flat plate type bass loudspeaker and electronic device employing the same
CN104768088A (en) * 2015-03-18 2015-07-08 歌尔声学股份有限公司 Loudspeaker module and electronic product

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201611942U (en) * 2010-01-29 2010-10-20 中山市天键电子工业有限公司 Waterproof earphone
CN102413392A (en) * 2010-09-26 2012-04-11 联想(北京)有限公司 Portable electronic equipment
JP2013138416A (en) * 2011-11-30 2013-07-11 Ube Ind Ltd Speaker unit
CN202773037U (en) * 2012-09-07 2013-03-06 广东欧珀移动通信有限公司 Waterproof electronic product
CN203368735U (en) * 2013-05-08 2013-12-25 歌尔声学股份有限公司 Flat plate type bass loudspeaker and electronic device employing the same
CN104768088A (en) * 2015-03-18 2015-07-08 歌尔声学股份有限公司 Loudspeaker module and electronic product

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021128373A1 (en) * 2019-12-28 2021-07-01 瑞声声学科技(深圳)有限公司 Speaker module and terminal device
CN111756903A (en) * 2020-07-01 2020-10-09 维沃移动通信有限公司 Speaker assembly and electronic device
CN113873365A (en) * 2021-10-11 2021-12-31 歌尔科技有限公司 Sound box
WO2023092949A1 (en) * 2021-11-29 2023-06-01 北京小米移动软件有限公司 Sound production module and electronic device

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