CN108430004A - A kind of loud speaker amplitude regulating device, adjusting method and mobile terminal - Google Patents
A kind of loud speaker amplitude regulating device, adjusting method and mobile terminal Download PDFInfo
- Publication number
- CN108430004A CN108430004A CN201810337784.5A CN201810337784A CN108430004A CN 108430004 A CN108430004 A CN 108430004A CN 201810337784 A CN201810337784 A CN 201810337784A CN 108430004 A CN108430004 A CN 108430004A
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- loud speaker
- voice coil
- amplitude
- induction coil
- electric 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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
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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
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
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- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
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Abstract
A kind of loud speaker amplitude regulating device of present invention offer, adjusting method and mobile terminal, the device include：Control module, power amplifier and loud speaker, control module is electrically connected with power amplifier, loud speaker includes voice coil and induction coil, voice coil is electrically connected with power amplifier, induction coil is electrically connected with control module, the inner wall of voice coil is enclosed the first cavity, and the inner wall of induction coil is enclosed the second cavity, and induction coil is set in the first cavity or voice coil is set in the second cavity；Control module, for obtaining the voice coil electric current of voice coil and the induced current of induction coil；According to voice coil electric current and induced current, the amplitude of loud speaker is determined, and when the amplitude of determining loud speaker and the absolute value for designing the difference between amplitude to prestore are greater than or equal to predetermined threshold value, adjust the output to the electric current of power amplifier.The present invention can make the sound quality of loud speaker more preferable.
Description
Technical field
The present invention relates to a kind of speaker technology field more particularly to loud speaker amplitude regulating device, adjusting method and shiftings
Dynamic terminal.
Background technology
With universal and entertainment industry the development of mobile terminal, people are more next for the sound quality experience requirements of mobile terminal
Higher, for loud speaker as the common playback equipment of mobile terminal, sound quality quality when playing audio files directly affects user
Sound quality experience.
The sound quality of loud speaker is influenced by the amplitude of loud speaker, i.e., there are a design amplitudes for loud speaker, if raised one's voice
Amplitude of the device when playing audio files is closer to design amplitude, then the sound quality of loud speaker is better.However, current loud speaker exists
Play audio files when amplitude be typically off design amplitude it is more, cause the sound quality of loud speaker poor.
Invention content
A kind of loud speaker amplitude regulating device of offer of the embodiment of the present invention, adjusting method and mobile terminal, it is current to solve
Amplitude of the loud speaker when playing audio files to be typically off design amplitude more, cause the sound quality of loud speaker is poor to ask
Topic.
In order to solve the above technical problems, the invention is realized in this way：
In a first aspect, the embodiment of the present invention provides a kind of loud speaker amplitude regulating device, including：
Control module, power amplifier and loud speaker, the control module is electrically connected with the power amplifier, described to raise
Sound device includes voice coil and induction coil, and the voice coil is electrically connected with the power amplifier, the induction coil and the control
Module is electrically connected, and the inner wall of the voice coil is enclosed the first cavity, and the inner wall of the induction coil is enclosed the second cavity,
The induction coil is set in first cavity or the voice coil is set in second cavity；
The control module, the induced current of voice coil electric current and the induction coil for obtaining the voice coil, wherein
The variation of magnetic flux of induced current when incuding the voice coil vibrations for the induction coil in the induction coil is produced
Raw electric current；According to the voice coil electric current and the induced current, the amplitude of the loud speaker, and raising in the determination are determined
When the absolute value of difference between the amplitude of sound device and the design amplitude to prestore is greater than or equal to predetermined threshold value, institute is adjusted the output to
State the electric current of power amplifier.
Second aspect, the embodiment of the present invention also provide a kind of loud speaker amplitude adjusting method, shake applied to above-mentioned loud speaker
Width regulating device, including：
Obtain the induced current of the voice coil electric current of the voice coil of loud speaker and the induction coil of loud speaker, wherein the induction
The electric current that the variation of magnetic flux of electric current when incuding the voice coil vibrations for the induction coil in the induction coil generates；
According to the voice coil electric current and the induced current, the amplitude of the loud speaker is determined；
The absolute value of difference between the amplitude and the design amplitude to prestore of the loud speaker of the determination is greater than or equal to
When predetermined threshold value, the electric current of the power amplifier is adjusted the output to.
The third aspect, the embodiment of the present invention also provide a kind of mobile terminal, including above-mentioned loud speaker amplitude regulating device.
Fourth aspect, the embodiment of the present invention also provide a kind of mobile terminal, including processor, memory and are stored in described
It is real when the computer program is executed by the processor on memory and the computer program that can run on the processor
The step of existing above-mentioned loud speaker amplitude adjusting method.
5th aspect, the embodiment of the present invention also provide a kind of computer readable storage medium, the computer-readable storage
Computer program is stored on medium, the computer program realizes above-mentioned loud speaker amplitude adjusting method when being executed by processor
The step of.
In embodiments of the present invention, since control module obtains voice coil electric current and induced current, and loud speaker is determined therefrom that
Amplitude, then difference between the amplitude and the design amplitude to prestore of determining loud speaker absolute value be greater than or equal to it is default
When threshold value, the electric current of power amplifier is adjusted the output to, i.e., due to can be when loud speaker amplitude off-design amplitude is more pair
The amplitude of loud speaker is adjusted, and so as to realize the real-time adjusting to loud speaker amplitude, and then can make the sound of loud speaker
Matter is more preferable.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, needed in being described below to the embodiment of the present invention
Attached drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without having to pay creative labor, it can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structure chart for the loud speaker amplitude regulating device that one embodiment of the invention provides；
Fig. 2 is the sectional view of the loud speaker in the loud speaker amplitude regulating device that one embodiment of the invention provides；
Fig. 3 is that the induction coil in the loud speaker amplitude regulating device that one embodiment of the invention provides is set to the of voice coil
When in one cavity, the sectional view at the vertical view visual angle of voice coil and induction coil；
Fig. 4 is that the voice coil in the loud speaker amplitude regulating device that one embodiment of the invention provides is set to the of induction coil
When in two cavitys, the sectional view at the vertical view visual angle of voice coil and induction coil；
Fig. 5 is the flexible PCB in the loud speaker in the loud speaker amplitude regulating device that one embodiment of the invention provides
Structure chart；
Fig. 6 is the flow chart for the loud speaker amplitude adjusting method that one embodiment of the invention provides；
Fig. 7 is the structure chart for the mobile terminal that one embodiment of the invention provides.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
As shown in Figures 1 to 4, a kind of loud speaker amplitude regulating device, including：
Control module 1, power amplifier 2 and loud speaker 3, the control module 1 are electrically connected with the power amplifier 2,
The loud speaker 3 includes voice coil 301 and induction coil 302, and the voice coil 301 is electrically connected with the power amplifier 2, the sense
Coil 302 is answered to be electrically connected with the control module 1, the inner wall of the voice coil 301 is enclosed the first cavity, the induction coil
302 inner wall is enclosed the second cavity, and the induction coil 302 is set in first cavity or the voice coil 301 is set
It is placed in second cavity；
The control module 1, the induced electricity of voice coil electric current and the induction coil 302 for obtaining the voice coil 301
Stream, wherein the induced current is that the induction coil 302 incudes when the voice coil 301 vibrates in the induction coil 302
The variation of magnetic flux and the electric current generated；According to the voice coil electric current and the induced current, shaking for the loud speaker 3 is determined
Width, and the absolute value of the difference between the amplitude of the loud speaker of the determination 3 and the design amplitude to prestore is greater than or equal in advance
If when threshold value, adjusting the output to the electric current of the power amplifier 2.
Wherein, above-mentioned control module 1 can be integrated circuit (integrated circuit, abbreviation IC), collection herein
It is properly termed as chip again at circuit.Above-mentioned power amplifier 2 can be, electric signal for being exported to control module 1 (for example,
Electric current) it is amplified processing, and by the device of the voice coil 301 of the electric signal output after enhanced processing to loud speaker 3.Above-mentioned voice coil
Electric current can be alternating current of the output of power amplifier 2 to voice coil 301.
The axis of above-mentioned voice coil 301 can be parallel with the axis of above-mentioned induction coil 302 or overlap, and can also be to be formed
One acute angle.
The relative position of voice coil 301 and induction coil 302 please refers to Fig. 3 and Fig. 4, when induction coil 302 is set to voice coil
When in 301 the first cavity, induction coil 302 and the sectional view at another visual angle (overlooking visual angle) of voice coil 301 can be such as Fig. 3
Shown, another visual angle herein refers to overlooking visual angle；And when voice coil 301 is set in the second cavity of induction coil 302, sense
It can be as shown in figure 4, another visual angle herein refers to regarding to answer coil 302 and the sectional view at another visual angle of voice coil 301
Angle.In addition, as shown in Figure 4, when voice coil 301 is set in the second cavity of induction coil 302, induction coil 302 can be
It is set on side magnet 304, for example, be arranged on the second magnetic conduction sheet 3042 of side magnet 304, and voice coil 301 can be setting
In gap between side magnet 304 and center magnet 305.
Magnetic flux in above-mentioned induction coil 302 can be the magnetic flux in the second cavity of induction coil 302.On
It is the change that the induction coil 302 incudes the magnetic flux in the induction coil 302 when the voice coil 301 vibrates to state induced current
The electric current changed and generated, it can be understood as, voice coil 301 can cause the magnetic flux in induction coil 302 to become when vibrating
Change (is on the one hand when being vibrated due to voice coil 301, the relative position of voice coil 301 and induction coil 302 changes and causes across sense
It answers the magnetic flux in coil 302 to change, if voice coil electric current changes when on the other hand voice coil 301 vibrates, also results in
Magnetic flux in induction coil changes), generate corresponding induced current so as to cause induction coil 302.
It is above-mentioned that the amplitude of the loud speaker 3 is determined according to the voice coil electric current and the induced current, can be according to pre-
The correspondence being first stored between the voice coil electric current in control module 1, induced current and loud speaker amplitude three, determining and institute
State voice coil electric current and the corresponding loud speaker amplitude of the induced current.The above-mentioned design amplitude to prestore can by designer according to
It needs to prestore, can also be determined by calculation by control module 1；Above-mentioned predetermined threshold value may be greater than 0 numerical value.
It is above-mentioned when the absolute value of the difference between the amplitude and the design amplitude to prestore of the loud speaker 3 of the determination is more than or
When equal to predetermined threshold value, the electric current of the power amplifier 2 is adjusted the output to, it can be understood as, first, it is determined that the determination
Whether the absolute value of the difference between the amplitude of loud speaker 3 and the design amplitude to prestore is greater than or equal to preset difference value, works as judgement
The absolute value of difference between the amplitude of the loud speaker 3 of the determination and the design amplitude to prestore is greater than or equal to preset difference value
When, then it is corresponding to increase according to the magnitude relationship and difference between the two of the amplitude of determining loud speaker 3 and the design amplitude to prestore
Big or reduction output to achieve the purpose that adjust voice coil electric current, and then reaches real-time adjust and raises one's voice to the electric current of power amplifier 2
The purpose of the amplitude of device 3.
In embodiments of the present invention, since control module obtains voice coil electric current and induced current, and loud speaker is determined therefrom that
Amplitude, then difference between the amplitude and the design amplitude to prestore of determining loud speaker absolute value be greater than or equal to it is default
When threshold value, the electric current of power amplifier is adjusted the output to, i.e., due to can be when loud speaker amplitude off-design amplitude is more pair
The amplitude of loud speaker is adjusted, and so as to realize the real-time adjusting to loud speaker amplitude, and then can make the sound of loud speaker
Matter is more preferable.
Loud speaker amplitude regulating device in the embodiment of the present invention can be applied to mobile phone, tablet computer (Tablet
Personal Computer), laptop computer (Laptop Computer), personal digital assistant (personal digital
Assistant, abbreviation PDA), mobile Internet access device (Mobile Internet Device, MID) or wearable device
Mobile terminals such as (Wearable Device).
Optionally, the loud speaker 3 further includes：Diaphragm 303 and magnetic field components for generating fixed magnetic field, the magnetic field
Component includes side magnet 304 and center magnet 305, and the side magnet 304 is set to the surrounding of the center magnet 305, described
Voice coil 301 is arranged between the side magnet 304 and the center magnet 305, and the voice coil 301 and the diaphragm 303 are solid
Fixed connection.
Wherein, above-mentioned diaphragm 303 can be followed the vibration of voice coil 301 when voice coil 301 vibrates and vibrate to send out sound
The component of sound.The above-mentioned surrounding that the center magnet 305 is set in magnet 304 can be for make center magnet 305 and while
Magnet 304 forms magnetic loop；Above-mentioned center magnet 305 can be parallel with the axis of above-mentioned side magnet 304 or overlap.
Above-mentioned voice coil 301 is arranged between the side magnet 304 and the center magnet 305, can refer to that voice coil 301 is set
It sets in the gap between side magnet 304 and center magnet 305.Above-mentioned voice coil 301 setting the side magnet 304 with it is described in
Between heart magnet 305, can be for making voice coil 301 be in the magnetic loop that side magnet 304 and center magnet 305 are formed, with
When alternating signal electric current being made to flow through voice coil 301, voice coil 301 generates vibration due to the effect by Ampere force, and then drives film
Piece 303 vibrates, to push air borne sound wave.
Optionally, the magnetic field components further include magnet steel 306, and the center magnet 305 includes center magnetite 3051 and the
The middle part of the magnet steel 306, the center magnetite are fixed in the end face of one magnetic conduction sheet 3052, one end of the center magnetite 3051
First magnetic conduction sheet 3052 is arranged in the end face of 3051 other end, and the magnetite 3041 and second when magnet 304 includes is led
The edge of the magnet steel 306 is fixed in magnetic sheet 3042, the end face of one end of the side magnetite 3041, the side magnetite 3041 it is another
Second magnetic conduction sheet 3042 is arranged in the end face of one end.
Wherein, above-mentioned magnet steel 306, above-mentioned first magnetic conduction sheet 3052 and above-mentioned second magnetic conduction sheet 3042 may each be for passing
It leads magnetic induction line and makes the component of magnetic induction line uniform transmission.Above-mentioned side magnetite 3041 can be an annular magnetite, can also be packet
Include N (N is more than or equal to 2 integer) a magnetite for being set to 3051 surrounding of center magnetite；Above-mentioned second magnetic conduction sheet 3042 can
To be ring magneto conducting piece.
In this way, due to being respectively equipped with magnet steel and the first magnetic conduction sheet at the both ends of center magnetite, and at the both ends of side magnetite point
Not She You magnet steel and the second magnetic conduction sheet, thus can preferably conduct magnetic induction line, the magnetic that center magnetite and side magnetite are formed is made to return
Road is more uniform, and then keeps the sound quality of loud speaker more preferable.
Optionally, the induction coil 302 is set in first cavity, and the induction coil 302 is fixed on described
On first magnetic conduction sheet 3052.
Wherein, above-mentioned induction coil 302 is fixed on first magnetic conduction sheet 3052, can be 302 gluing of induction coil
It is bonded on the first magnetic conduction sheet 3052.
In this way, induction coil is fixed on the first magnetic conduction sheet, structure is simpler, to easily facilitate the system of loud speaker
It makes and assembles, also make cost lower.
Optionally, the loud speaker 3 further includes top dome 307, and the top dome 307 is arranged on the diaphragm 303.
Wherein, above-mentioned top dome 307 can be the component of the intensity for increasing diaphragm 303.
In this way, due to being provided with top dome on diaphragm, so as to improve the intensity of diaphragm to increase the stability of loud speaker,
And then the sound quality of loud speaker can be made more preferable.
Optionally, the loud speaker 3 further includes flexible PCB 308 (Flexible Printed Circuit, abbreviation
FPC), the voice coil 301 is electrically connected by power amplifier 2 described in the flexible PCB 308, and the induction coil 302 is logical
The flexible PCB 308 is crossed to connect with the control module 1.
Wherein, the structure of above-mentioned flexible PCB 308 can be as shown in figure 5, i.e. including voice coil pad 3081 (in figure
Two voice coil pads 3081 correspond to positive and negative anodes respectively), voice coil leads pad 3082, induction coil pad 3083 (two in figure
Induction coil pad 3083 corresponds to positive and negative anodes respectively) and induction coil lead pad 3084；Wherein, voice coil pad 3081 and sound
3082 mutual conduction of lead pad is enclosed, and voice coil pad 3081 is used to be electrically connected with power amplifier 2, voice coil leads pad 3082
For being electrically connected with voice coil 301, induction coil pad 3083 and 3084 mutual conduction of induction coil lead pad, and induction coil
Pad 3083 with control module 1 for being electrically connected, and induction coil lead pad 3084 with induction coil 302 for being electrically connected.This
Sample, when the structure of flexible PCB 308 uses structure shown in Fig. 3, the electric signal that power amplifier 2 exports successively passes through sound
Lap welding disk 3081 and voice coil leads pad 3082, and eventually enter into the power supply of voice coil 301；And the electric signal that induction coil 302 is fed back
Successively by induction coil lead pad 3084 and induction coil pad 3083, and finally it is transmitted to control module 1.
In this way, since flexible PCB has the characteristics that Distribution density is high, light-weight, thickness is thin, bending is good, thus adopt
The electrical connection between each component is realized with flexible PCB, can make the loud speaker amplitude regulating device in the embodiment of the present invention
Distribution density higher, weight is lighter, volume smaller and assembly are more convenient.
Optionally, the flexible PCB 308 is fixed on the side magnet 304, and the voice coil 301 passes through the flexibility
Circuit board 308 is fixedly connected with the diaphragm 303.
Wherein, can be flexible circuit as shown in Fig. 2, above-mentioned flexible PCB 308 is fixed on the side magnet 304
Plate 308, specifically can be with by being fixed on the second magnetic conduction sheet 3042 of the magnet 304 when the holder 309 on magnet 304 is fixed on
It is the second magnetic conduction sheet 3042 of one end connection side magnet 304 of holder 309, the other end of holder 309 connects flexible PCB
308。
As shown in fig. 6, a kind of loud speaker amplitude adjusting method, applied to raising described in each embodiment in above-described embodiment
Sound device amplitude regulating device, including：
Step 601, obtain loud speaker voice coil voice coil electric current and loud speaker induction coil induced current, wherein
The variation of magnetic flux of induced current when incuding the voice coil vibrations for the induction coil in the induction coil is produced
Raw electric current；
Step 602, according to the voice coil electric current and the induced current, determine the amplitude of the loud speaker；
Step 603, the determination loud speaker amplitude and prestore design amplitude between difference absolute value it is big
When predetermined threshold value, the electric current of the power amplifier is adjusted the output to.
Wherein, about the magnetic flux in above-mentioned control module, above-mentioned power amplifier, above-mentioned induction coil, above-mentioned induction
Electric current, above-mentioned voice coil electric current, above-mentioned predetermined threshold value, the amplitude of the above-mentioned loud speaker when the determination and the design amplitude that prestores it
Between the absolute value of difference when being greater than or equal to predetermined threshold value, adjust the output to the electric current of the power amplifier and above-mentioned raise
Concrete structure of sound device etc. is referred to the explanatory note of corresponding portion in the corresponding embodiments of Fig. 1 to Fig. 5, therefore herein no longer
It repeats.
Loud speaker amplitude adjusting method in the embodiment of the present invention, due to obtaining voice coil electric current and induced current, and accordingly
Determine the amplitude of loud speaker, then the absolute value of the difference between the amplitude and the design amplitude to prestore of determining loud speaker is more than
Or when equal to predetermined threshold value, the electric current of power amplifier is adjusted the output to, i.e., due to can shake in loud speaker amplitude off-design
The amplitude of loud speaker is adjusted when more, so as to realize the real-time adjusting to loud speaker amplitude, and then can be made
The sound quality of loud speaker is more preferable.
Loud speaker amplitude adjusting method in the embodiment of the present invention, can be applied to mobile phone, tablet computer (Tablet
Personal Computer), laptop computer (Laptop Computer), personal digital assistant (personal digital
Assistant, abbreviation PDA), mobile Internet access device (Mobile Internet Device, MID) or wearable device
Mobile terminals such as (Wearable Device).
Optionally, described according to the voice coil electric current and the induced current, the step of determining the amplitude of the loud speaker
Before, further include：
Store the correspondence between voice coil electric current, induced current and loud speaker amplitude three；
According to the voice coil electric current and the induced current, the step of determining the amplitude of the loud speaker, including：
According to the correspondence between voice coil electric current, induced current and the loud speaker amplitude three to prestore, determines and obtain
The voice coil electric current and the corresponding loud speaker amplitude of the induced current.
In this way, since the correspondence between voice coil electric current, induced current and loud speaker amplitude three being carried out in advance
Storage, it is thus possible to directly determine that loud speaker shakes by the correspondence to prestore after obtaining voice coil electric current and induced current
Width can quickly determine the amplitude of loud speaker in this way, and then can improve the governing speed to loud speaker amplitude, make adjusting
Real-time is more preferable.
It should be pointed out that each step of the loud speaker amplitude adjusting method in each embodiment of the embodiment of the present invention
Executive agent can be control module in loud speaker amplitude regulating device described in above-described embodiment.
One embodiment of the invention also provides a kind of mobile terminal, including raising one's voice described in each embodiment in above-described embodiment
Device amplitude regulating device.
Mobile terminal in the embodiment of the present invention, due to shaking including the loud speaker described in each embodiment in above-described embodiment
Width regulating device, it is thus possible to the amplitude of loud speaker is adjusted when loud speaker amplitude off-design amplitude is more, to
It can realize the real-time adjusting to loud speaker amplitude, and then the sound quality of loud speaker can be made more preferable.
A kind of hardware architecture diagram of Fig. 7 mobile terminals of each embodiment to realize the present invention, the mobile terminal 700
Including but not limited to：Radio frequency unit 701, audio output unit 703, input unit 704, sensor 705, is shown network module 702
Show the components such as unit 706, user input unit 707, interface unit 708, memory 709, processor 710 and power supply 711.
It will be understood by those skilled in the art that mobile terminal structure shown in Fig. 7 does not constitute the restriction to mobile terminal, it is mobile whole
End may include either combining certain components or different components arrangement than illustrating more or fewer components.In the present invention
In embodiment, mobile terminal includes but not limited to mobile phone, tablet computer, laptop, palm PC, car-mounted terminal, can wear
Wear equipment and pedometer etc..
Wherein, processor 710 is used for：
Obtain the induced current of the voice coil electric current of the voice coil of loud speaker and the induction coil of loud speaker, wherein the induction
The electric current that the variation of magnetic flux of electric current when incuding the voice coil vibrations for the induction coil in the induction coil generates；
According to the voice coil electric current and the induced current, the amplitude of the loud speaker is determined；
The absolute value of difference between the amplitude and the design amplitude to prestore of the loud speaker of the determination is greater than or equal to
When predetermined threshold value, the electric current of the power amplifier is adjusted the output to.
Optionally, processor 710 is additionally operable to：
Store the correspondence between voice coil electric current, induced current and loud speaker amplitude three；
Processor 710 execute according to the voice coil electric current and the induced current, determine the amplitude of the loud speaker
Step, including：
According to the correspondence between voice coil electric current, induced current and the loud speaker amplitude three to prestore, determines and obtain
The voice coil electric current and the corresponding loud speaker amplitude of the induced current.
Mobile terminal 700 can realize each process that loud speaker amplitude regulating device is realized in previous embodiment, to keep away
Exempt to repeat, which is not described herein again.
The mobile terminal 700 of the embodiment of the present invention due to obtaining voice coil electric current and induced current, and determines therefrom that loud speaker
Amplitude, then difference between the amplitude and the design amplitude to prestore of determining loud speaker absolute value be greater than or equal to it is default
When threshold value, the electric current of power amplifier is adjusted the output to, i.e., due to can be when loud speaker amplitude off-design amplitude is more pair
The amplitude of loud speaker is adjusted, and so as to realize the real-time adjusting to loud speaker amplitude, and then can make the sound of loud speaker
Matter is more preferable.
It should be understood that the embodiment of the present invention in, radio frequency unit 701 can be used for receiving and sending messages or communication process in, signal
Send and receive, specifically, by from base station downlink data receive after, to processor 710 handle；In addition, by uplink
Data are sent to base station.In general, radio frequency unit 701 includes but not limited to antenna, at least one amplifier, transceiver, coupling
Device, low-noise amplifier, duplexer etc..In addition, radio frequency unit 701 can also by radio communication system and network and other set
Standby communication.
Mobile terminal has provided wireless broadband internet to the user by network module 702 and has accessed, and such as user is helped to receive
Send e-mails, browse webpage and access streaming video etc..
It is that audio output unit 703 can receive radio frequency unit 701 or network module 702 or in memory 709
The audio data of storage is converted into audio signal and exports to be sound.Moreover, audio output unit 703 can also be provided and be moved
The relevant audio output of specific function that dynamic terminal 700 executes is (for example, call signal receives sound, message sink sound etc.
Deng).Audio output unit 703 includes loud speaker, buzzer and receiver etc..
Input unit 704 is for receiving audio or video signal.Input unit 704 may include graphics processor
(Graphics Processing Unit, GPU) 7041 and microphone 7042, graphics processor 7041 is in video acquisition mode
Or the image data of the static images or video obtained by image capture apparatus (such as camera) in image capture mode carries out
Reason.Treated, and picture frame may be displayed on display unit 706.Through graphics processor 7041, treated that picture frame can be deposited
Storage is sent in memory 709 (or other storage mediums) or via radio frequency unit 701 or network module 702.Mike
Wind 7042 can receive sound, and can be audio data by such acoustic processing.Treated audio data can be
The format output of mobile communication base station can be sent to via radio frequency unit 701 by being converted in the case of telephone calling model.
Mobile terminal 700 further includes at least one sensor 705, such as optical sensor, motion sensor and other biographies
Sensor.Specifically, optical sensor includes ambient light sensor and proximity sensor, wherein ambient light sensor can be according to environment
The light and shade of light adjusts the brightness of display panel 7061, and proximity sensor can close when mobile terminal 700 is moved in one's ear
Display panel 7061 and/or backlight.As a kind of motion sensor, accelerometer sensor can detect in all directions (general
For three axis) size of acceleration, size and the direction of gravity are can detect that when static, can be used to identify mobile terminal posture (ratio
Such as horizontal/vertical screen switching, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap)；It passes
Sensor 705 can also include fingerprint sensor, pressure sensor, iris sensor, molecule sensor, gyroscope, barometer, wet
Meter, thermometer, infrared sensor etc. are spent, details are not described herein.
Display unit 706 is for showing information input by user or being supplied to the information of user.Display unit 706 can wrap
Display panel 7061 is included, liquid crystal display (Liquid Crystal Display, LCD), Organic Light Emitting Diode may be used
Forms such as (Organic Light-Emitting Diode, OLED) configure display panel 7061.
User input unit 707 can be used for receiving the number or character information of input, and generate the use with mobile terminal
Family is arranged and the related key signals input of function control.Specifically, user input unit 707 include touch panel 7071 and
Other input equipments 7072.Touch panel 7071, also referred to as touch screen collect user on it or neighbouring touch operation
(for example user uses any suitable objects or attachment such as finger, stylus on touch panel 7071 or in touch panel 7071
Neighbouring operation).Touch panel 7071 may include both touch detecting apparatus and touch controller.Wherein, touch detection
Device detects the touch orientation of user, and detects the signal that touch operation is brought, and transmits a signal to touch controller；Touch control
Device processed receives touch information from touch detecting apparatus, and is converted into contact coordinate, then gives processor 710, receiving area
It manages the order that device 710 is sent and is executed.Furthermore, it is possible to more using resistance-type, condenser type, infrared ray and surface acoustic wave etc.
Type realizes touch panel 7071.In addition to touch panel 7071, user input unit 707 can also include other input equipments
7072.Specifically, other input equipments 7072 can include but is not limited to physical keyboard, function key (such as volume control button,
Switch key etc.), trace ball, mouse, operating lever, details are not described herein.
Further, touch panel 7071 can be covered on display panel 7061, when touch panel 7071 is detected at it
On or near touch operation after, send processor 710 to determine the type of touch event, be followed by subsequent processing device 710 according to touch
The type for touching event provides corresponding visual output on display panel 7061.Although in the figure 7, touch panel 7071 and display
Panel 7061 is to realize the function that outputs and inputs of mobile terminal as two independent components, but in some embodiments
In, can be integrated by touch panel 7071 and display panel 7061 and realize the function that outputs and inputs of mobile terminal, it is specific this
Place does not limit.
Interface unit 708 is the interface that external device (ED) is connect with mobile terminal 700.For example, external device (ED) may include having
Line or wireless head-band earphone port, external power supply (or battery charger) port, wired or wireless data port, storage card end
Mouth, port, the port audio input/output (I/O), video i/o port, earphone end for connecting the device with identification module
Mouthful etc..Interface unit 708 can be used for receiving the input (for example, data information, electric power etc.) from external device (ED) and
By one or more elements that the input received is transferred in mobile terminal 700 or can be used in 700 He of mobile terminal
Transmission data between external device (ED).
Memory 709 can be used for storing software program and various data.Memory 709 can include mainly storing program area
And storage data field, wherein storing program area can storage program area, application program (such as the sound needed at least one function
Sound playing function, image player function etc.) etc.；Storage data field can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory 709 may include high-speed random access memory, can also include non-easy
The property lost memory, a for example, at least disk memory, flush memory device or other volatile solid-state parts.
Processor 710 is the control centre of mobile terminal, utilizes each of various interfaces and the entire mobile terminal of connection
A part by running or execute the software program and/or module that are stored in memory 709, and calls and is stored in storage
Data in device 709 execute the various functions and processing data of mobile terminal, to carry out integral monitoring to mobile terminal.Place
Reason device 710 may include one or more processing units；Preferably, processor 710 can integrate application processor and modulatedemodulate is mediated
Manage device, wherein the main processing operation system of application processor, user interface and application program etc., modem processor is main
Processing wireless communication.It is understood that above-mentioned modem processor can not also be integrated into processor 710.
Mobile terminal 700 can also include the power supply 711 (such as battery) powered to all parts, it is preferred that power supply 711
Can be logically contiguous by power-supply management system and processor 710, to realize management charging by power-supply management system, put
The functions such as electricity and power managed.
In addition, mobile terminal 700 includes some unshowned function modules, details are not described herein.
Preferably, the embodiment of the present invention also provides a kind of mobile terminal, including processor 710, and memory 709 is stored in
On memory 709 and the computer program that can be run on the processor 710, the computer program are executed by processor 710
Each process of the above-mentioned loud speaker amplitude adjusting method embodiments of Shi Shixian, and identical technique effect can be reached, to avoid weight
Multiple, which is not described herein again.
The embodiment of the present invention also provides a kind of computer readable storage medium, and meter is stored on computer readable storage medium
Calculation machine program, the computer program realize each mistake of above-mentioned loud speaker amplitude adjusting method embodiment when being executed by processor
Journey, and identical technique effect can be reached, to avoid repeating, which is not described herein again.Wherein, the computer-readable storage medium
Matter, such as read-only memory (Read-Only Memory, abbreviation ROM), random access memory (Random Access
Memory, abbreviation RAM), magnetic disc or CD etc..
It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements include not only those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including this
There is also other identical elements in the process of element, method, article or device.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical scheme of the present invention substantially in other words does the prior art
Going out the part of contribution can be expressed in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions are used so that a station terminal (can be mobile phone, computer, service
Device, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited in above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form belongs within the protection of the present invention.
Claims (10)
1. a kind of loud speaker amplitude regulating device, which is characterized in that including：
Control module, power amplifier and loud speaker, the control module are electrically connected with the power amplifier, the loud speaker
Including voice coil and induction coil, the voice coil is electrically connected with the power amplifier, the induction coil and the control module
Electrical connection, the inner wall of the voice coil are enclosed the first cavity, and the inner wall of the induction coil is enclosed the second cavity, described
Induction coil is set in first cavity or the voice coil is set in second cavity；
The control module, the induced current of voice coil electric current and the induction coil for obtaining the voice coil, wherein described
The variation of magnetic flux of induced current when incuding the voice coil vibrations for the induction coil in the induction coil and generate
Electric current；According to the voice coil electric current and the induced current, the amplitude of the loud speaker is determined, and in the loud speaker of the determination
Amplitude and prestore design amplitude between difference absolute value be greater than or equal to predetermined threshold value when, adjust the output to the work(
The electric current of rate amplifier.
2. loud speaker amplitude regulating device according to claim 1, which is characterized in that the loud speaker further includes：Diaphragm
With the magnetic field components for generating fixed magnetic field, the magnetic field components include side magnet and center magnet, the side magnet setting
In the surrounding of the center magnet, the voice coil is arranged between the side magnet and the center magnet, and the voice coil with
The diaphragm is fixedly connected.
3. loud speaker amplitude regulating device according to claim 2, which is characterized in that the magnetic field components further include magnetic
Steel, the center magnet include center magnetite and the first magnetic conduction sheet, and the magnetic is fixed in the end face of one end of the center magnetite
The middle part of steel, the end face of the other end of the center magnetite are arranged first magnetic conduction sheet, the magnetite when magnet includes and
The edge of the magnet steel, the end of the other end of the side magnetite are fixed in the end face of second magnetic conduction sheet, one end of the side magnetite
Second magnetic conduction sheet is arranged in face.
4. loud speaker amplitude regulating device according to claim 3, which is characterized in that the induction coil is set to described
In first cavity, and the induction coil is fixed on first magnetic conduction sheet.
5. loud speaker amplitude regulating device according to claim 2, which is characterized in that the loud speaker further includes top dome,
The top dome is arranged on the diaphragm.
6. loud speaker amplitude regulating device according to claim 2, which is characterized in that the loud speaker further includes flexible electrical
Road plate, the voice coil are electrically connected by the flexible PCB with the power amplifier, and the induction coil passes through described soft
Property circuit board is connect with the control module.
7. loud speaker amplitude regulating device according to claim 6, which is characterized in that the flexible PCB is fixed on institute
It states on the magnet of side, the voice coil is fixedly connected by the flexible PCB with the diaphragm.
8. a kind of loud speaker amplitude adjusting method is applied to the loud speaker amplitude as described in any one of claim 1 to 7 and adjusts
Device, which is characterized in that including：
Obtain the induced current of the voice coil electric current of the voice coil of loud speaker and the induction coil of loud speaker, wherein the induced current
The electric current that the variation of magnetic flux when incuding the voice coil vibrations for the induction coil in the induction coil generates；
According to the voice coil electric current and the induced current, the amplitude of the loud speaker is determined；
The absolute value of difference between the amplitude and the design amplitude to prestore of the loud speaker of the determination is greater than or equal to default
When threshold value, the electric current of the power amplifier is adjusted the output to.
9. a kind of mobile terminal, which is characterized in that include the loud speaker amplitude adjusting as described in any one of claim 1 to 7
Device.
10. a kind of mobile terminal, which is characterized in that including processor, memory and be stored on the memory and can be in institute
The computer program run on processor is stated, is realized such as claim 8 institute when the computer program is executed by the processor
The step of loud speaker amplitude adjusting method stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810337784.5A CN108430004B (en) | 2018-04-16 | 2018-04-16 | Loudspeaker amplitude adjusting device, adjusting method and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810337784.5A CN108430004B (en) | 2018-04-16 | 2018-04-16 | Loudspeaker amplitude adjusting device, adjusting method and mobile terminal |
Publications (2)
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| CN108430004A true CN108430004A (en) | 2018-08-21 |
| CN108430004B CN108430004B (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810337784.5A Active CN108430004B (en) | 2018-04-16 | 2018-04-16 | Loudspeaker amplitude adjusting device, adjusting method and mobile terminal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270352A (en) * | 2018-08-23 | 2019-01-25 | 维沃移动通信有限公司 | A kind of amplitude adjusting method and sounding device |
| CN112235700A (en) * | 2020-10-30 | 2021-01-15 | Oppo广东移动通信有限公司 | Amplitude adjustment method for electroacoustic device, terminal device and readable storage medium |
| CN112752205A (en) * | 2019-10-31 | 2021-05-04 | 华为技术有限公司 | Loudspeaker and adjusting method thereof |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4243839A (en) * | 1977-12-14 | 1981-01-06 | Matsushita Electric Industrial Co., Ltd. | Transducer with flux sensing coils |
| JPH01258588A (en) * | 1988-04-08 | 1989-10-16 | Mitsubishi Electric Corp | Speaker unit |
| US5062140A (en) * | 1988-04-27 | 1991-10-29 | Sony Corporation | Induction speaker |
| CN203086728U (en) * | 2013-01-18 | 2013-07-24 | 歌尔声学股份有限公司 | Acoustic module |
| CN104113803A (en) * | 2014-07-17 | 2014-10-22 | 瑞声声学科技(深圳)有限公司 | Multi-voice-coil based loudspeaker system |
| CN104185125A (en) * | 2014-08-14 | 2014-12-03 | 瑞声声学科技(深圳)有限公司 | Loudspeaker system and driving method thereof |
| CN204887456U (en) * | 2015-08-19 | 2015-12-16 | 嘉善豪声电子有限公司 | Many magnetism display separation china department speaker |
| CN105721993A (en) * | 2016-03-21 | 2016-06-29 | 歌尔声学股份有限公司 | Single loudspeaker, loudspeaker system and method for adjusting vibration displacement of vibration diaphragm |
| CN106101934A (en) * | 2016-08-05 | 2016-11-09 | 北京小米移动软件有限公司 | Speaker and the method for adjustment of speaker amplitude |
| CN106101932A (en) * | 2016-07-11 | 2016-11-09 | 深圳天珑无线科技有限公司 | A kind of loudspeaker audio drive circuit, method and intelligent terminal |
| CN107295448A (en) * | 2017-07-27 | 2017-10-24 | 维沃移动通信有限公司 | A kind of loudspeaker and mobile terminal |
| CN107396275A (en) * | 2017-07-21 | 2017-11-24 | 维沃移动通信有限公司 | A kind of amplitude detecting device, method and mobile terminal |
| CN107454531A (en) * | 2017-09-22 | 2017-12-08 | 努比亚技术有限公司 | A kind of loudspeaker, terminal and the method for adjusting volume |
| CN107820165A (en) * | 2017-09-29 | 2018-03-20 | 努比亚技术有限公司 | A kind of method, equipment and computer-readable recording medium for realizing audio frequency process |
-
2018
- 2018-04-16 CN CN201810337784.5A patent/CN108430004B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4243839A (en) * | 1977-12-14 | 1981-01-06 | Matsushita Electric Industrial Co., Ltd. | Transducer with flux sensing coils |
| JPH01258588A (en) * | 1988-04-08 | 1989-10-16 | Mitsubishi Electric Corp | Speaker unit |
| US5062140A (en) * | 1988-04-27 | 1991-10-29 | Sony Corporation | Induction speaker |
| CN203086728U (en) * | 2013-01-18 | 2013-07-24 | 歌尔声学股份有限公司 | Acoustic module |
| CN104113803A (en) * | 2014-07-17 | 2014-10-22 | 瑞声声学科技(深圳)有限公司 | Multi-voice-coil based loudspeaker system |
| CN104185125A (en) * | 2014-08-14 | 2014-12-03 | 瑞声声学科技(深圳)有限公司 | Loudspeaker system and driving method thereof |
| CN204887456U (en) * | 2015-08-19 | 2015-12-16 | 嘉善豪声电子有限公司 | Many magnetism display separation china department speaker |
| CN105721993A (en) * | 2016-03-21 | 2016-06-29 | 歌尔声学股份有限公司 | Single loudspeaker, loudspeaker system and method for adjusting vibration displacement of vibration diaphragm |
| CN106101932A (en) * | 2016-07-11 | 2016-11-09 | 深圳天珑无线科技有限公司 | A kind of loudspeaker audio drive circuit, method and intelligent terminal |
| CN106101934A (en) * | 2016-08-05 | 2016-11-09 | 北京小米移动软件有限公司 | Speaker and the method for adjustment of speaker amplitude |
| CN107396275A (en) * | 2017-07-21 | 2017-11-24 | 维沃移动通信有限公司 | A kind of amplitude detecting device, method and mobile terminal |
| CN107295448A (en) * | 2017-07-27 | 2017-10-24 | 维沃移动通信有限公司 | A kind of loudspeaker and mobile terminal |
| CN107454531A (en) * | 2017-09-22 | 2017-12-08 | 努比亚技术有限公司 | A kind of loudspeaker, terminal and the method for adjusting volume |
| CN107820165A (en) * | 2017-09-29 | 2018-03-20 | 努比亚技术有限公司 | A kind of method, equipment and computer-readable recording medium for realizing audio frequency process |
Non-Patent Citations (1)
| Title |
|---|
| 大久保聪: "剖析超薄型手机", 《电子设计应用》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270352A (en) * | 2018-08-23 | 2019-01-25 | 维沃移动通信有限公司 | A kind of amplitude adjusting method and sounding device |
| CN112752205A (en) * | 2019-10-31 | 2021-05-04 | 华为技术有限公司 | Loudspeaker and adjusting method thereof |
| CN112752205B (en) * | 2019-10-31 | 2022-04-29 | 华为技术有限公司 | Loudspeaker and adjusting method thereof |
| CN112235700A (en) * | 2020-10-30 | 2021-01-15 | Oppo广东移动通信有限公司 | Amplitude adjustment method for electroacoustic device, terminal device and readable storage medium |
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|---|---|
| CN108430004B (en) | 2020-09-25 |
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