CN112752205B - Loudspeaker and adjusting method thereof - Google Patents

Loudspeaker and adjusting method thereof Download PDF

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CN112752205B
CN112752205B CN201911052846.9A CN201911052846A CN112752205B CN 112752205 B CN112752205 B CN 112752205B CN 201911052846 A CN201911052846 A CN 201911052846A CN 112752205 B CN112752205 B CN 112752205B
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voice coil
value
control signal
parameter
supply voltage
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CN112752205A (en
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李东科
吴桂敏
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • 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

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  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

The embodiment of the application provides a loudspeaker and an adjusting method thereof, wherein the loudspeaker comprises: first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil that the vibration direction is opposite, drive circuit includes: the device comprises a driving module, a detection module and a signal processing module. The method comprises the following steps: the driving module triggers the first voice coil and the second voice coil to work. The detection module detects a value n1 of a first parameter of the first voice coil and a value n2 of a first parameter of the second voice coil, respectively. The signal processing module generates a control signal when | N1-N2| is larger than a preset first threshold value N, and the control signal triggers the driving module to adjust the power supply voltage for the first voice coil and/or the second voice coil, so that the adjusted | N1-N2| is not larger than the threshold value. According to the technical scheme provided by the embodiment of the application, the power supply voltage is adjusted, so that the value of | n1-n2| after adjustment is not larger than the threshold value, and the reduction of vibration of the loudspeaker during working is facilitated.

Description

Loudspeaker and adjusting method thereof
Technical Field
The present application relates to the field of speaker technologies, and in particular, to a method for adjusting a speaker and a speaker.
Background
With the development of portable electronic device technology, people have increasingly high requirements for the external playing effect of portable electronic devices (such as smart phones, notebook computers, personal digital assistants, portable game machines, and the like). In order to improve the low-frequency response of the notebook computer, the amplitude of the micro speaker of the notebook computer is designed to be larger and larger. Under the application of large amplitude, the vibration of the voice coil and the vibrating diaphragm of the micro loudspeaker can excite the keyboard to vibrate, the experience of a user using the keyboard is influenced, and moreover, noise can be generated to influence the external sound quality.
In order to reduce noise, two voice coils (for example, a first voice coil and a second voice coil) with opposite vibration directions can be arranged in the loudspeaker, wherein the first voice coil and the second voice coil are respectively matched with the diaphragm group to realize bidirectional vibration sound production in the same magnetic circuit, the vibration masses of the first voice coil and the second voice coil are the same, the vibration directions are opposite during working, and ideally, the momentum change delta () is mutually offset, so that no vibration excitation is generated on peripheral contact objects. For an electronic product applying the loudspeaker, such as a notebook computer, when the loudspeaker plays sound and a user uses a keyboard, the vibration of the loudspeaker to a shell and the keyboard of the computer is greatly reduced, and even no vibration excitation exists.
It should be noted that, to achieve the ideal state, the mass and the vibration speed of the two voice coils must be the same, and the arrangement of the two voice coils has better symmetry, so that the ideal effect can be achieved through damping; the sizes of the upper voice coil and the lower voice coil of an actual product are not identical, and the difference between the upper vibrating diaphragm and the lower vibrating diaphragm, the process assembly difference and the like cause the problem that the vertical symmetric deviation of the vibration amplitude is inconsistent when the loudspeaker works, the vibration speed can be changed due to different deviations, the vibration speed of the two voice coils can not be kept consistent, the final momentum change delta () can not be completely offset, and the actual damping effect can be inevitably reduced.
Disclosure of Invention
The embodiment of the application provides a loudspeaker and an adjusting method thereof, and vibration of the loudspeaker during working can be reduced.
In a first aspect, an embodiment of the present application provides an adjusting method for a speaker, where the speaker includes: drive circuit and vibration opposite direction's first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil, drive circuit includes: the method comprises a driving module, a detection module and a signal processing module, and comprises the following steps: the driving module triggers the first voice coil and the second voice coil to work; the detection module respectively detects a value n1 of a first parameter of the first voice coil and a value n2 of a first parameter of a second voice coil, and the first parameter is used for representing the working state of the voice coils; the signal processing module generates a control signal when the difference (i.e. the absolute value of the difference between N1 and N2) i N1-N2 i between N1 and N2 is greater than a preset first threshold N, and the control signal triggers the driving module to adjust the power supply voltage for the first voice coil and/or the second voice coil so that the value of i N1-N2 i after adjustment is not greater than the threshold.
In some possible embodiments, the first parameter comprises: induced voltage or vibration speed.
When the loudspeaker adjusting method provided by the embodiment is adopted, if the difference between the first parameters is greater than the first threshold, the driving module adjusts the power supply voltage to the first voice coil and/or the second voice coil, so that the adjusted value of | n1-n2| is not greater than the threshold. This can reduce the vibration of the speaker during operation.
In some possible embodiments, the method may further include: the detection module detects an amplitude L1 of the first voice coil and an amplitude L2 of the second voice coil; if Li is larger than a preset second threshold value L, triggering the signal processing module to generate a control signal to trigger the driving module to reduce the power supply voltage to the ith voice coil, wherein i is any one of 1 and 2.
According to the technical scheme provided by the embodiment, according to the amplitude of the voice coil, the driving module can reduce the power supply voltage of the voice coil with the amplitude larger than the threshold value, and the operation safety of the voice coil can be improved in the mode.
In some possible embodiments, the method further comprises: the detection module detects a temperature T1 of the first voice coil and a temperature T2 of the second voice coil; and if the Tj is larger than a preset third threshold value T, triggering the signal processing module to generate a control signal, and triggering the driving module to reduce the power supply voltage to the jth voice coil by the control signal, wherein j is any one of 1 and 2.
According to the technical scheme provided by the embodiment, according to the temperature of the voice coil, the driving module can reduce the power supply voltage of the voice coil with the temperature being greater than the threshold value, and the operation safety of the voice coil can be improved in the mode.
In some possible embodiments, the triggering the driving module to adjust the voltage supplied to the first voice coil and/or the second voice coil so that the adjusted | n1-n2| has a value not greater than a threshold value includes: and increasing the power supply voltage of the ith voice coil, wherein i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than that of the first parameter of the other voice coil.
According to the technical scheme provided by the embodiment, according to the first parameters of the voice coils, when the difference of the first parameters of the two voice coils is larger than the threshold value, the driving module increases the power supply voltage of the voice coil with the lower first parameter value, so that the loudspeaker can emit larger sound.
In a second aspect, an embodiment of the present application provides a speaker, including: drive circuit to and vibration opposite direction's first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil, drive circuit includes: the device comprises a driving module, a detection module and a signal processing module; the driving module is used for triggering the first voice coil and the second voice coil to work; the detection module is used for respectively detecting the value n1 of the first parameter of the first voice coil and the value n2 of the first parameter of the second voice coil, and the first parameter is used for indicating the working state of the voice coils; the signal processing module is used for generating a control signal when the difference | N1-N2| of the N1 and the N2 is larger than a preset first threshold value N, and the control signal triggers the driving module to adjust the power supply voltage for the first voice coil and/or the second voice coil, so that the value of | N1-N2| after adjustment is not larger than the threshold value.
With the loudspeaker provided by the embodiment, if the difference between the first parameters is greater than the first threshold, the driving module adjusts the power supply voltage to the first voice coil and/or the second voice coil, so that the adjusted value of | n1-n2| is not greater than the threshold. This can reduce the vibration of the speaker during operation.
In some possible embodiments, the first parameter comprises: induced voltage or vibration speed.
In some possible embodiments, the detection module is further configured to detect an amplitude L1 of the first voice coil and an amplitude L2 of the second voice coil; the signal processing module is further configured to generate a control signal if Li is greater than a preset second threshold L, where the control signal is used to control the driving module to reduce a power supply voltage to an ith voice coil, and i is any one of 1 and 2.
According to the technical scheme provided by the embodiment, according to the amplitude of the voice coil, the driving module can reduce the power supply voltage of the voice coil with the amplitude larger than the threshold value, and the operation safety of the voice coil can be improved in the mode.
In some possible embodiments, the detection module is further configured to detect a temperature T1 of the first voice coil and a temperature T2 of the second voice coil; the signal processing module is further configured to trigger the signal processing module to generate a control signal if Tj is greater than a preset third threshold T, where the control signal is used to control the driving module to reduce a power supply voltage to a jth voice coil, and j is any one of 1 and 2.
According to the technical scheme provided by the embodiment, according to the temperature of the voice coil, the driving module can reduce the power supply voltage of the voice coil with the temperature being greater than the threshold value, and the operation safety of the voice coil can be improved in the mode.
In some possible embodiments, the signal processing module is specifically configured to increase the supply voltage of the ith voice coil in the aspect that the control signal triggers the driving module to adjust the supply voltage to the first voice coil and/or the second voice coil so that the value of | n1-n2| after adjustment is not greater than a threshold value, where i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than the value of the first parameter of the other voice coil.
According to the technical scheme provided by the embodiment, according to the first parameters of the voice coils, when the difference of the first parameters of the two voice coils is larger than the threshold value, the driving module increases the power supply voltage of the voice coil with the lower first parameter value, so that the loudspeaker can emit larger sound.
In a third aspect, an embodiment of the present application provides an electronic device, which includes the speaker described in the second aspect or any possible implementation manner of the second aspect provided in the embodiment of the present application.
In a fourth aspect, the present application provides a computer-readable storage medium, which stores a computer program, where the computer program includes program instructions, which when executed, enable a speaker to implement some or all of the steps of the method according to the first aspect or any possible implementation manner of the first aspect provided in the present application.
The embodiment of the application has the following beneficial effects:
according to the embodiment of the application, if the difference between the first parameters is larger than the first threshold, the power supply voltage for the first voice coil and/or the second voice coil is adjusted, so that the value of | n1-n2| after adjustment is not larger than the threshold. This can reduce the vibration of the speaker during operation.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of a speaker according to an embodiment of the present application.
Fig. 2 is a schematic perspective exploded structural diagram of a partial structure of a speaker according to an embodiment of the present application.
Fig. 3 is a schematic flowchart of an adjusting method of a speaker according to an embodiment of the present disclosure.
Fig. 4 is a schematic flowchart of another speaker adjustment method according to an embodiment of the present disclosure.
Fig. 5 is a schematic flowchart of another speaker adjustment method according to an embodiment of the present application.
Fig. 6 is a schematic flowchart of another speaker adjustment method according to an embodiment of the present disclosure.
Fig. 7 is a schematic flowchart of another speaker adjustment method according to an embodiment of the present application.
Fig. 8 is a schematic flowchart of another speaker adjustment method according to an embodiment of the present disclosure.
Fig. 9 is a schematic flowchart of another speaker adjustment method according to an embodiment of the present application.
Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The loudspeaker related to the embodiment of the application can be applied to electronic equipment such as a notebook computer, a smart phone, a personal digital assistant and a portable game machine. The speaker includes: first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil that the vibration direction is opposite, drive circuit includes: the device comprises a driving module, a detection module and a signal processing module.
In order to better understand the embodiments of the present application, a method for adjusting a speaker according to the embodiments of the present application will be briefly described below. Referring to fig. 1, fig. 1 is a schematic structural diagram of a speaker according to an embodiment of the present disclosure. As shown in fig. 1, two voice coils (a first voice coil 101 and a second voice coil 102) with opposite vibration directions are arranged in the speaker, wherein the first voice coil 101 and the second voice coil 102 respectively cooperate with the diaphragm set to realize bidirectional vibration sound production in the same magnetic circuit, the vibration masses of the first voice coil and the second voice coil are the same, and the vibration directions are opposite during operation. The speaker further includes a driving circuit 103 connected to the first voice coil 101 and the second voice coil 102, and the driving circuit 103 includes: a driving module 1031, a detection module 1032 and a signal processing module.
Referring to fig. 2, fig. 2 is a schematic perspective exploded view of a partial structure of a speaker according to an embodiment of the present application. The loudspeaker shown in fig. 2 includes a first diaphragm group 10, a second diaphragm group 30, and a first voice coil 20, a second voice coil 40 and a magnetic circuit system located between the first diaphragm group 10 and the second diaphragm group 30. The first diaphragm group 10, the second diaphragm group 30, the first voice coil 20 and the second voice coil 40 are arranged on the same center line O, the first voice coil 20 is installed on the first diaphragm group 10, the second voice coil 40 is installed on the second diaphragm group 30, a magnetic field is formed in the magnetic circuit system, and the direction from the north pole to the south pole of the generated magnetic field is along the extending direction of the center line O. The first voice coil 20 is opposite to the second voice coil 40 in a spaced mode; the first voice coil 20 and the second voice coil 40 are both at least partially located in the magnetic field generated by the magnetic circuit system, and the vibration directions of the first voice coil 20 and the second voice coil 40 after being electrified are opposite at the same time; the vibration of first voice coil 20 and second voice coil 40 do respectively first diaphragm group 10 and second diaphragm group 30 provide drive power so that first diaphragm group 10 and second diaphragm group 30 sound to two opposite directions simultaneously, promptly first voice coil 20 and second voice coil 40 vibrate and drive respectively first diaphragm group 10 and second diaphragm group 30 move, and then make first diaphragm group 10 and second diaphragm group 30 sound. Ideally, the mass and vibration rate of the first voice coil 20 and the second voice coil 40 are the same, and the momentum changes Δ () in the two directions can completely cancel each other, thereby further reducing the vibration force and the vibration effect on the keyboard. In order to solve the problem, the loudspeaker shown in fig. 1 is designed, and the loudspeaker can use the adjusting method of the loudspeaker in the embodiment of the application method.
Referring to fig. 3, fig. 3 is a schematic flowchart of an adjusting method of a speaker according to an embodiment of the present application. As shown in fig. 3, the adjusting method of the speaker includes the steps of:
s301, the driving module triggers the first voice coil and the second voice coil to work.
S302, the detection module respectively detects a value n1 of a first parameter of the first voice coil and a value n2 of a first parameter of a second voice coil, and the first parameter is used for representing the working state of the voice coils.
In some possible embodiments the first parameter may be an induced voltage, or may be a vibration speed or the like.
And S303, the signal processing module generates a control signal when the difference | N1-N2| of the N1 and the N2 is greater than a preset first threshold N, and the control signal triggers the driving module to adjust the power supply voltage for the first voice coil and/or the second voice coil, so that the value of | N1-N2| after adjustment is not greater than the threshold. Where | n1-n2| is the absolute value of the difference between n1 and n 2.
For example, if n1 is greater than n2 and | n1-n2| is greater than the preset value, the determining module may increase the power supply voltage corresponding to n2, decrease the power supply voltage corresponding to n1, or both increase the power supply voltage corresponding to n2 and decrease the power supply voltage corresponding to n 1.
When the loudspeaker adjusting method provided by the embodiment is adopted, if the difference between the first parameters is greater than the first threshold, the driving module adjusts the power supply voltage to the first voice coil and/or the second voice coil, so that the adjusted value of | n1-n2| is not greater than the threshold. This can reduce the vibration of the speaker during operation.
Referring to fig. 4, fig. 4 is a schematic flowchart of an adjusting method of a speaker according to another embodiment of the present application. As shown in fig. 4, the adjusting method of the speaker includes the following steps.
S401, the driving module triggers the first voice coil and the second voice coil to work.
S402, the detection module detects the amplitude L1 of the first voice coil and the amplitude L2 of the second voice coil.
And S403, judging whether L1 or L2 is larger than a preset second threshold value L.
S404, if the L1 or the L2 is larger than a preset second threshold value L, the driving module reduces the power supply voltage of the voice coil with the amplitude larger than L. Specifically, the signal processing module generates a control signal that triggers the driving module to reduce the supply voltage of the voice coil with amplitude greater than L.
S405, if both L1 and L2 are not greater than a preset second threshold value L, the detection module respectively detects a value n1 of a first parameter of the first voice coil and a value n2 of a first parameter of a second voice coil, wherein the first parameter is used for indicating the working state of the voice coils. In some possible embodiments the first parameter may be an induced voltage, or may be a vibration speed or the like.
And S406, the signal processing module generates a control signal when the difference | N1-N2| of the N1 and the N2 is larger than a preset first threshold N, and the control signal triggers the driving module to adjust the power supply voltage for the first voice coil and/or the second voice coil, so that the value of | N1-N2| after adjustment is not larger than the threshold. Where | n1-n2| is the absolute value of the difference between n1 and n 2.
For example, if n1 is greater than n2 and | n1-n2| is greater than preset, the signal processing module generates a control signal, and the control signal triggers the driving module to increase the power supply voltage corresponding to n2, or decrease the power supply voltage corresponding to n1, or both increase the power supply voltage corresponding to n2 and decrease the power supply voltage corresponding to n 1.
When the loudspeaker adjusting method provided by the embodiment is adopted, if the amplitude of at least one voice coil is larger than the threshold, the supply voltage of the voice coil with the amplitude larger than L is reduced, so that the service life of the loudspeaker is prolonged, and if the difference of the first parameters is larger than the first threshold, the supply voltage of the first voice coil and/or the second voice coil is adjusted, so that the adjusted value of | n1-n2| is not larger than the threshold, and the vibration of the loudspeaker during operation can be reduced.
Referring to fig. 5, fig. 5 is a flowchart illustrating a method for adjusting a speaker according to an embodiment of the present application. As shown in fig. 5, the adjusting method of the speaker includes the following steps.
S501, the driving module triggers the first voice coil and the second voice coil to work.
S502, the detection module detects the amplitude L1 of the first voice coil, the amplitude L2 of the second voice coil, the value n1 of the first parameter of the first voice coil and the value n2 of the first parameter of the second voice coil.
S503, judging whether | N1-N2| is larger than a preset first threshold value N, and whether L1 or L2 is larger than a second threshold value L.
S504, if a voice coil with amplitude larger than a threshold exists, the signal processing module generates a control signal, and the control signal triggers the driving module to reduce the power supply voltage of the corresponding voice coil; if the | N1-N2| is larger than a preset first threshold value N, the driving module adjusts the power supply voltage of the first voice coil and/or the second voice coil.
Then, S502, S503, and S504 are continuously executed until the operation is ended when the determination result of S503 is no.
When the loudspeaker adjusting method provided by the embodiment is adopted, if the amplitude of at least one voice coil is larger than the threshold value, or the difference of the first parameters is larger than the first threshold value, the power supply voltage of the voice coil with the amplitude larger than L is reduced, or the power supply voltage of the first voice coil or the second voice coil is adjusted, and after the power supply voltage is adjusted, the absolute value of | N1-N2| is smaller than the threshold value N, so that the safety of the loudspeaker is improved, the service life of the loudspeaker is prolonged, and the vibration of the loudspeaker during working is reduced.
Referring to fig. 6, fig. 6 is a schematic flowchart illustrating a method for adjusting a speaker according to an embodiment of the present application. As shown in fig. 6, the adjusting method of the speaker includes the following steps.
S601, the driving module triggers the first voice coil and the second voice coil to work.
S602, the detection module detects the temperature T1 of the first voice coil and the temperature T2 of the second voice coil.
S603, judging whether T1 or T2 is larger than a preset second threshold value T.
S604, if the T1 or the T2 is larger than a preset second threshold value T, the driving module reduces the power supply voltage of the voice coil with the temperature larger than T. Then, S602, S603, and S604 are continuously executed until the determination result of S603 is no, and then S605 is executed.
S605, the detection module respectively detects a value n1 of a first parameter of the first voice coil and a value n2 of a first parameter of the second voice coil, and the first parameter is used for representing the working state of the voice coils. In some possible embodiments the first parameter may be an induced voltage, or may be a vibration speed or the like.
And S606, the signal processing module generates a control signal when the difference | N1-N2| between N1 and N2 is larger than a preset first threshold N, and the control signal triggers the driving module to adjust the power supply voltage for the first voice coil and/or the second voice coil, so that the value of | N1-N2| after adjustment is not larger than the threshold. Where | n1-n2| is the absolute value of the difference between n1 and n 2.
When the loudspeaker adjusting method provided by the embodiment is adopted, if the temperature of at least one voice coil is greater than the threshold, the power supply voltage of the voice coil with the temperature greater than T is firstly reduced, so that the loudspeaker is protected, the service life of the loudspeaker is prolonged, and if the difference of the first parameters is greater than the first threshold, the driving module adjusts the power supply voltage of the first voice coil and/or the second voice coil, so that the adjusted value of | n1-n2| is not greater than the threshold, and the vibration of the loudspeaker during working can be reduced.
Referring to fig. 7, fig. 7 is a flowchart illustrating a method for adjusting a speaker according to an embodiment of the present application. As shown in fig. 7, the adjusting method of the speaker includes the following steps.
And S701, the driving module triggers the first voice coil and the second voice coil to work.
S702, the detection module detects the temperature T1 of the first voice coil, the temperature T2 of the second voice coil, the value n1 of the first parameter of the first voice coil and the value n2 of the first parameter of the second voice coil.
S703, judging whether | N1-N2| is larger than a preset first threshold value N, and whether T1 or T2 is larger than a third threshold value T.
S704, if a voice coil with the temperature larger than the threshold exists, the signal processing module generates a control signal, and the control signal triggers the driving module to reduce the power supply voltage of the corresponding voice coil; if the | N1-N2| is larger than a preset first threshold value N, the driving module adjusts the power supply voltage of the first voice coil and/or the second voice coil. For example, if n1 is greater than n2 and | n1-n2| is greater than a preset value, the driving module may increase the power supply voltage corresponding to n2, decrease the power supply voltage corresponding to n1, or both increase the power supply voltage corresponding to n2 and decrease the power supply voltage corresponding to n 1.
Then, S702, S703, and S704 are continuously executed until the operation is ended when the determination result of S703 is no.
When the loudspeaker adjusting method provided by the embodiment is adopted, if the temperature of at least one voice coil is greater than the threshold value, or the difference of the first parameters is greater than the first threshold value, the power supply voltage of the first voice coil or the second voice coil is adjusted, so that the previous temperature is less than T, and the adjusted | N1-N2| is less than the threshold value N, which is beneficial to improving the safety of the loudspeaker, prolonging the service life of the loudspeaker and reducing the vibration of the loudspeaker during working.
Referring to fig. 8, fig. 8 is a flowchart illustrating a method for adjusting a speaker according to an embodiment of the present application. As shown in fig. 8, the adjusting method of the speaker includes the following steps.
S801, the driving module triggers the first voice coil and the second voice coil to work.
S802, the detection module detects the temperature T1 and the amplitude L1 of the first voice coil and the temperature T2 and the amplitude L2 of the second voice coil.
S803, judging whether L1 or L2 is larger than a preset second threshold value L, and whether T1 or T2 is larger than a preset third threshold value T.
S804, if the voice coil with the amplitude larger than the threshold value or the voice coil with the temperature larger than the threshold value exists, the driving module reduces the power supply voltage of the corresponding voice coil. And then, continuing to execute S802, S803 and S804 until the judgment result of S803 is negative, and if not, executing S805.
S805, the detection module respectively detects a value n1 of a first parameter of the first voice coil and a value n2 of a first parameter of a second voice coil, and the first parameter is used for representing the working state of the voice coils. In some possible embodiments the first parameter may be an induced voltage, or may be a vibration speed or the like.
And S806, when the difference | N1-N2| between N1 and N2 is larger than a preset first threshold N, the signal processing module generates a control signal, and the control signal triggers the driving module to adjust the power supply voltage for the first voice coil and/or the second voice coil, so that the value of | N1-N2| after adjustment is not larger than the threshold. Where | n1-n2| is the absolute value of the difference between n1 and n 2.
When the loudspeaker adjusting method provided by the embodiment is adopted, if the temperature of at least one voice coil is greater than the threshold value or the amplitude of at least one voice coil is greater than the threshold value, the power supply voltage of the corresponding voice coil is firstly adjusted down, so that the loudspeaker is protected, the service life of the loudspeaker is prolonged, and if the difference of the first parameters is greater than the first threshold value, the driving module adjusts the power supply voltage of the first voice coil and/or the second voice coil, so that the adjusted value of | n1-n2| is not greater than the threshold value, and the vibration of the loudspeaker during working can be reduced.
Referring to fig. 9, fig. 9 is a schematic flowchart of an adjusting method of a speaker according to an embodiment of the present application. As shown in fig. 9, the adjusting method of the speaker includes the following steps.
And S901, the driving module triggers the first voice coil and the second voice coil to work.
S902, the detection module detects the temperature T1 and the amplitude L1 of the first voice coil, the temperature T2 and the amplitude L2 of the second voice coil, the value n1 of the first parameter of the first voice coil and the value n2 of the first parameter of the second voice coil.
S903, judging whether | N1-N2| is larger than a preset first threshold value N, whether L1 or L2 is larger than a second threshold value L, and whether T1 or T2 is larger than a third threshold value T.
S904, if the voice coil with the amplitude larger than the threshold value exists or the voice coil with the temperature larger than the threshold value exists, the driving module reduces the power supply voltage of the corresponding voice coil; if the | N1-N2| is larger than a preset first threshold value N, the driving module adjusts the power supply voltage of the first voice coil and/or the second voice coil. For example, if n1 is greater than n2 and | n1-n2| is greater than preset, the driving module increases the power supply voltage corresponding to n2, or decreases the power supply voltage corresponding to n1, or both increases the power supply voltage corresponding to n2 and decreases the power supply voltage corresponding to n 1.
Then, S902, S903, and S904 are continuously executed until the operation is ended when the determination result of S903 is no.
When the loudspeaker adjusting method provided by the embodiment is adopted, if the amplitude of at least one voice coil is larger than the threshold value, the temperature is larger than the threshold value, or the difference of the first parameters is larger than the threshold value, the power supply voltage of the first voice coil or the second voice coil is adjusted, so that the temperature of the voice coil is smaller than the threshold value T, the amplitude is smaller than the threshold value L, and the adjusted | N1-N2| is smaller than the threshold value N, thereby being beneficial to improving the safety of the loudspeaker, prolonging the service life of the loudspeaker, and reducing the vibration of the loudspeaker during working.
An embodiment of the present application further provides a speaker, where the speaker includes: drive circuit to and vibration opposite direction's first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil, drive circuit includes: the device comprises a driving module, a detection module and a signal processing module; the driving module is used for triggering the first voice coil and the second voice coil to work; the detection module is used for respectively detecting the value n1 of the first parameter of the first voice coil and the value n2 of the first parameter of the second voice coil, and the first parameter is used for indicating the working state of the voice coils; the signal processing module is used for generating a control signal when the difference | N1-N2| of the N1 and the N2 is larger than a preset first threshold value N, and the control signal triggers the driving module to adjust the power supply voltage for the first voice coil and/or the second voice coil, so that the value of | N1-N2| after adjustment is not larger than the threshold value.
In some possible embodiments, the first parameter includes: induced voltage or vibration speed.
In some possible embodiments, the detection module is further configured to detect an amplitude L1 of the first voice coil and an amplitude L2 of the second voice coil; in some possible embodiments, the signal processing module is further configured to generate a control signal if Li is greater than a preset second threshold L, where the control signal triggers the driving module to decrease the power supply voltage to the ith voice coil, and i is any one of 1 and 2.
In some possible embodiments, the detection module is further configured to detect a temperature T1 of the first voice coil and a temperature T2 of the second voice coil; the signal processing module is further configured to trigger the signal processing module to generate a control signal if Tj is greater than a preset third threshold T, where the control signal is used to trigger the driving module to reduce a power supply voltage to a jth voice coil, and j is any one of 1 and 2.
In some possible embodiments, the signal processing module is specifically configured to generate the control signal to trigger the driving circuit to increase the supply voltage to the ith voice coil in an aspect that the control signal triggers the driving module to adjust the supply voltage to the first voice coil and/or the second voice coil so that the adjusted value of | n1-n2| is not greater than a threshold value, where i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than the value of the first parameter of the other voice coil.
An embodiment of the present application further provides an electronic device, which includes a speaker, where the speaker may be the speaker described in any of the foregoing embodiments.
Referring to fig. 10, fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application, where the electronic device 1000 includes: a radio frequency unit 1010, a memory 1020, an input unit 1030, a camera 1040, an audio circuit 1050, a processor 1060, an external interface 1070, and a power supply 1080. Among them, the input unit 1030 includes a touch screen 1031 and other input devices 1032, and the audio circuit 1050 includes a speaker 1051, a microphone 1052, and an earphone jack 1053. The touch screen 1031 may be a display screen having a touch function. In this embodiment, the speaker 1051 includes: first voice coil loudspeaker voice coil and the second voice coil loudspeaker voice coil that the vibration direction is opposite, drive circuit includes: the driving module triggers the first voice coil and the second voice coil to work when audio is played; the detection module respectively detects a value n1 of a first parameter of the first voice coil and a value n2 of a first parameter of a second voice coil, and the first parameter is used for representing the working state of the voice coils; the signal processing module generates a control signal when the difference | N1-N2| of the N1 and N2 is larger than a preset first threshold value N, and the control signal triggers the driving module to adjust the power supply voltage of the first voice coil and/or the second voice coil, so that the value of the adjusted | N1-N2| is not larger than the threshold value. The first parameter may be an induced voltage or a vibration speed. The detection module may be further configured to detect an amplitude L1 of the first voice coil and an amplitude L2 of the second voice coil; if Li is larger than a preset second threshold value L, the signal processing module generates a control signal, the control signal triggers the driving module to reduce the power supply voltage to the ith voice coil, and i is any one of 1 and 2. The detection module may be further configured to detect a temperature T1 of the first voice coil and a temperature T2 of the second voice coil; if Tj is larger than a preset third threshold value T, the signal processing module generates a control signal, the control signal triggers the driving module to reduce the power supply voltage to the jth voice coil, and j is any one of 1 and 2. The control signal triggers the drive module to adjust a supply voltage to the first voice coil and/or the second voice coil such that a value of adjusted | n1-n2| is not greater than a threshold, including: the driving module increases the power supply voltage for the ith voice coil, wherein i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than that of the first parameter of the other voice coil.
Embodiments of the present application also provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, the computer program includes program instructions, which when executed, enable a speaker to implement part or all of the steps of any one of the speaker adjusting methods described in the above method embodiments.
Embodiments of the present application also provide a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program causes a computer to execute part or all of the steps of any one of the speaker adjusting methods described in the above method embodiments.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module.
The integrated units, if implemented in the form of software program modules and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned memory comprises: various media capable of storing program codes, such as a usb disk, a read-only memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and the like.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash memory disks, read-only memory, random access memory, magnetic or optical disks, and the like.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (20)

1. A method of adjusting a loudspeaker, the loudspeaker comprising: drive circuit and vibration opposite direction's first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil, drive circuit includes: the method comprises a driving module, a detection module and a signal processing module, and comprises the following steps:
the driving module triggers the first voice coil and the second voice coil to work;
the detection module respectively detects a value n1 of a first parameter of the first voice coil and a value n2 of a first parameter of a second voice coil, and the first parameter is used for representing the working state of the voice coils;
the signal processing module generates a control signal when the difference | N1-N2| of the N1 and N2 is larger than a preset first threshold value N, and the control signal triggers the driving module to adjust the power supply voltage of the first voice coil and/or the second voice coil, so that the value of the adjusted | N1-N2| is not larger than the threshold value.
2. The method of claim 1, wherein the first parameter comprises: induced voltage or vibration speed.
3. The method of claim 1 or 2, wherein the first parameter comprises an amplitude of a voice coil, the amplitude of the first voice coil is L1 and the amplitude of the second voice coil is L2, the method further comprising:
if Li is larger than a preset second threshold value L, the signal processing module is triggered to generate a control signal, the control signal triggers the driving module to reduce the power supply voltage to the ith voice coil, and i is any one of 1 and 2.
4. The method of claim 1 or 2, wherein the first parameter comprises a temperature of a voice coil, the temperature of the first voice coil is T1 and the temperature of the second voice coil is T2, the method further comprising:
and if the Tj is larger than a preset third threshold value T, triggering the signal processing module to generate a control signal, and triggering the driving module to reduce the power supply voltage to the jth voice coil by the control signal, wherein j is any one of 1 and 2.
5. The method of claim 3, wherein the first parameter comprises a temperature of a voice coil, the temperature of the first voice coil is T1 and the temperature of the second voice coil is T2, the method further comprising:
and if the Tj is larger than a preset third threshold value T, triggering the signal processing module to generate a control signal, and triggering the driving module to reduce the power supply voltage to the jth voice coil by the control signal, wherein j is any one of 1 and 2.
6. The method of claim 1 or 2, wherein the control signal triggers the drive module to adjust a supply voltage to the first voice coil and/or the second voice coil such that a value of adjusted | n1-n2| is not greater than a threshold value, comprising:
the driving module increases the power supply voltage for the ith voice coil, wherein i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than that of the first parameter of the other voice coil.
7. The method of claim 3, wherein the control signal triggers the drive module to adjust a supply voltage to the first voice coil and/or the second voice coil such that a value of adjusted | n1-n2| is not greater than a threshold value, comprising:
the driving module increases the power supply voltage for the ith voice coil, wherein i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than that of the first parameter of the other voice coil.
8. The method of claim 4, wherein the control signal triggers the drive module to adjust a supply voltage to the first voice coil and/or the second voice coil such that a value of adjusted | n1-n2| is not greater than a threshold value, comprising:
the driving module increases the power supply voltage for the ith voice coil, wherein i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than that of the first parameter of the other voice coil.
9. The method of claim 5, wherein the control signal triggers the drive module to adjust a supply voltage to the first voice coil and/or the second voice coil such that a value of adjusted | n1-n2| is not greater than a threshold value, comprising:
the driving module increases the power supply voltage for the ith voice coil, wherein i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than that of the first parameter of the other voice coil.
10. A loudspeaker, characterized in that the loudspeaker comprises: drive circuit to and vibration opposite direction's first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil, drive circuit includes: the device comprises a driving module, a detection module and a signal processing module;
the driving module is used for triggering the first voice coil and the second voice coil to work;
the detection module is used for respectively detecting the value n1 of the first parameter of the first voice coil and the value n2 of the first parameter of the second voice coil, and the first parameter is used for indicating the working state of the voice coils;
the signal processing module is used for generating a control signal when the difference | N1-N2| of the N1 and the N2 is larger than a preset first threshold value N, and the control signal triggers the driving module to adjust the power supply voltage for the first voice coil and/or the second voice coil, so that the value of | N1-N2| after adjustment is not larger than the threshold value.
11. The loudspeaker of claim 10, wherein the first parameter comprises: induced voltage or vibration speed.
12. The speaker of claim 10 or 11, wherein the first parameter comprises an amplitude of a voice coil, the amplitude of the first voice coil is L1 and the amplitude of the second voice coil is L2,
the signal processing module is further configured to generate a control signal if Li is greater than a preset second threshold L, where the control signal is used to control the driving module to reduce a power supply voltage to an ith voice coil, and i is any one of 1 and 2.
13. The speaker of any one of claims 10 to 11, wherein the first parameter comprises a temperature of a voice coil, the temperature of the first voice coil is T1 and the temperature of the second voice coil is T2,
the signal processing module is further configured to generate a control signal if Tj is greater than a preset third threshold T, where the control signal is used to control the driving module to reduce a power supply voltage to a jth voice coil, and j is any one of 1 and 2.
14. The speaker of claim 12, wherein the first parameter comprises a temperature of a voice coil, the temperature of the first voice coil is T1 and the temperature of the second voice coil is T2,
the signal processing module is further configured to generate a control signal if Tj is greater than a preset third threshold T, where the control signal is used to control the driving module to reduce a power supply voltage to a jth voice coil, and j is any one of 1 and 2.
15. Loudspeaker according to claim 10 or 11,
the signal processing module is specifically configured to generate a control signal, in which the control signal triggers the driving module to adjust the power supply voltage to the first voice coil and/or the second voice coil so that the adjusted value of | n1-n2| is not greater than a threshold value, and the control signal triggers the driving module to increase the power supply voltage to the ith voice coil, where i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than the value of the first parameter of the other voice coil.
16. The loudspeaker of claim 12,
the signal processing module is specifically configured to generate a control signal, in which the control signal triggers the driving module to adjust the power supply voltage to the first voice coil and/or the second voice coil so that the adjusted value of | n1-n2| is not greater than a threshold value, and the control signal triggers the driving module to increase the power supply voltage to the ith voice coil, where i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than the value of the first parameter of the other voice coil.
17. The loudspeaker of claim 13,
the signal processing module is specifically configured to generate a control signal, in which the control signal triggers the driving module to adjust the power supply voltage to the first voice coil and/or the second voice coil so that the adjusted value of | n1-n2| is not greater than a threshold value, and the control signal triggers the driving module to increase the power supply voltage to the ith voice coil, where i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than the value of the first parameter of the other voice coil.
18. The loudspeaker of claim 14,
the signal processing module is specifically configured to generate a control signal, in which the control signal triggers the driving module to adjust the power supply voltage to the first voice coil and/or the second voice coil so that the adjusted value of | n1-n2| is not greater than a threshold value, and the control signal triggers the driving module to increase the power supply voltage to the ith voice coil, where i is any one of 1 and 2, and the value of the first parameter of the ith voice coil is smaller than the value of the first parameter of the other voice coil.
19. An electronic device, characterized in that it comprises a loudspeaker according to any one of claims 10-18.
20. A computer-readable storage medium, characterized in that the computer storage medium stores a computer program comprising program instructions that, when executed, are capable of causing a loudspeaker to implement the method of any one of claims 1-9.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4464785A (en) * 1983-04-08 1984-08-07 Charles N. K. Cluxton Loudspeaker system
US5347587A (en) * 1991-11-20 1994-09-13 Sharp Kabushiki Kaisha Speaker driving device
WO2009050909A1 (en) * 2007-10-19 2009-04-23 Kazumichi Imai Recoilless speaker unit
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
CN108430004A (en) * 2018-04-16 2018-08-21 维沃移动通信有限公司 A kind of loud speaker amplitude regulating device, adjusting method and mobile terminal
CN111385714A (en) * 2020-03-17 2020-07-07 维沃移动通信有限公司 Method for determining voice coil temperature of loudspeaker, electronic device and storage medium

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4464785A (en) * 1983-04-08 1984-08-07 Charles N. K. Cluxton Loudspeaker system
US5347587A (en) * 1991-11-20 1994-09-13 Sharp Kabushiki Kaisha Speaker driving device
WO2009050909A1 (en) * 2007-10-19 2009-04-23 Kazumichi Imai Recoilless speaker unit
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
CN108430004A (en) * 2018-04-16 2018-08-21 维沃移动通信有限公司 A kind of loud speaker amplitude regulating device, adjusting method and mobile terminal
CN111385714A (en) * 2020-03-17 2020-07-07 维沃移动通信有限公司 Method for determining voice coil temperature of loudspeaker, electronic device and storage medium

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