CN113873407A

CN113873407A - Loudspeaker control method, loudspeaker module and electronic equipment

Info

Publication number: CN113873407A
Application number: CN202111249172.9A
Authority: CN
Inventors: 洪小康; 龙立锋
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2021-12-31
Also published as: WO2023071924A1

Abstract

The application discloses a loudspeaker control method, a loudspeaker module and electronic equipment, wherein the method comprises the following steps: monitoring the working state of the loudspeaker module; when the loudspeaker module is determined to be in the external playing mode, a first coil is driven through a first driving circuit of alternating current, and a second coil is driven through a second driving circuit of constant current; the first coil is arranged on a vibrating diaphragm of the loudspeaker module, the second coil is arranged on a shell of the loudspeaker module, and the first coil corresponds to the second coil in position. This application is through when the speaker module is the loudspeaker mode, make first coil strengthen the motion in the magnetic field that the second coil produced to play bass, promote the play sound quality audio in coordination with the coil reinforcing of speaker main part.

Description

Loudspeaker control method, loudspeaker module and electronic equipment

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to a loudspeaker control method, a loudspeaker module and electronic equipment.

Background

With the trend of thinning and thinning mobile phones, the volume of a back sound cavity of a micro speaker commonly used on the mobile phone is small, so that the low frequency of the external radio is insufficient, the external radio has poor low frequency difference and the overall effect is poor.

The conventional effective way to increase the low frequency is to increase the back volume, such as adding powder particles like D-BASS in the limited cavity, which can be equivalent to increasing the cavity volume.

However, even after the back cavity of the mobile phone meets the design requirements, the low-frequency response of the loudspeaker is poor as can be seen from the intelligent power amplifier modeling amplitude curve. In the low-frequency band of 100hz-500hz, the amplitude value required by modeling cannot be reached, and the external low-frequency amplification is still insufficient, so that the effect is not ideal.

Disclosure of Invention

The application aims to provide a loudspeaker control method, a loudspeaker module and electronic equipment, and at least solves one of the problems that existing loudspeakers are insufficient in low frequency amplification and unsatisfactory in effect.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a speaker control method, where a diaphragm and a housing of a speaker module are respectively provided with a first coil and a second coil, and positions of the first coil and the second coil correspond to each other, where the speaker control method includes:

and when the loudspeaker module is determined to be in the external playing mode, driving the first coil through a first driving circuit of alternating current, and driving the second coil through a second driving circuit of constant current.

In a second aspect, an embodiment of the present application provides a speaker module, including: the loudspeaker comprises a shell and a loudspeaker body, wherein the loudspeaker body comprises a vibrating diaphragm, a first coil is arranged on the vibrating diaphragm, a second coil is arranged on the shell, and the first coil corresponds to the second coil in position.

In a third aspect, an embodiment of the present application provides an electronic device, including: the loudspeaker module, the first driving circuit of alternating current and the second driving circuit of constant current, wherein the first driving circuit is used for driving the first coil of the loudspeaker module, and the second driving circuit is used for driving the second coil of the loudspeaker module.

In the embodiment of the application, the working state of the loudspeaker module is monitored; when the loudspeaker module is determined to be in the external playing mode, a first coil is driven through a first driving circuit of alternating current, and a second coil is driven through a second driving circuit of constant current; the first coil is arranged on a vibrating diaphragm of the loudspeaker module, the second coil is arranged on a shell of the loudspeaker module, and the first coil corresponds to the second coil in position. This application embodiment when the speaker module is the loudspeaker mode, make first coil strengthen the motion in the magnetic field that the second coil produced to the bass is put in coordination to the coil reinforcing of speaker main part, promotes the play sound quality audio.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of a speaker module according to an embodiment of the present invention;

fig. 2 is an exploded view of a speaker module according to an embodiment of the present invention;

fig. 3 is a top view of a speaker body according to an embodiment of the present invention;

FIG. 4 is a bottom view of a speaker housing according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an electronic device according to an embodiment of the invention;

FIG. 6 is a schematic diagram of another configuration of an electronic device according to an embodiment of the invention;

fig. 7 is a flow chart of a speaker control method according to an embodiment of the present invention;

fig. 8 is another flow chart diagram of a speaker control method according to an embodiment of the present invention.

Reference numerals:

100-loudspeaker module, 110-loudspeaker body, 120-casing, 111-coating, 101-first coil, 102-second coil, 210-first drive circuit, 220-second drive circuit, 230-control unit, 240-receiver unit, 250-switching circuit.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. 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 features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A speaker module according to an embodiment of the present invention is described below with reference to fig. 1.

As shown in fig. 1-2, the speaker module 100 includes: the loudspeaker comprises a shell 120 and a loudspeaker body 110, wherein the loudspeaker body 110 comprises a diaphragm 111, a first coil 101 is arranged on the diaphragm 111, a second coil 102 is arranged on the shell 120, and the first coil 101 corresponds to the second coil 102 in position.

The arrangement of the first coil 101 and the second coil 102 may be various, and an embodiment of the present application is only one of them, as shown in fig. 3, the first coil 101 may be disposed on the surface area of the diaphragm 111 through an etching or plating process, and two pads (pads) are led out for connecting the first driving circuit, so that the original space of the speaker module is not additionally occupied. As shown in fig. 4, the second coil 102 is disposed on the housing 120 at a position corresponding to the first coil 101 by using a Laser Direct Structuring (LDS) process, and is connected to a second driving circuit through a pad or a pin.

Further, the first coil 101 is driven by a first drive circuit of an alternating current, and the second coil 102 is driven by a second drive circuit of a constant current.

When the speaker module 100 is in the play-out mode, the first coil 101 is in communication with the first driving circuit, and the second coil 102 is in communication with the second driving circuit. The first driving circuit may multiplex the control circuit of the speaker module 100. Second coil 102 passes through the constant current, produces magnetic field, and first coil 101 passes through the alternating current signal of low frequency, strengthens the motion in the magnetic field that second coil 102 produced to strengthen speaker module 100 in the vibration of low-frequency channel, in order to reach the unilateral upper and lower amplitude of demand, compensate and put the scene outward and recognize the bass deficiency, promote outer tone quality.

Further, the position of the second coil 102 may be varied, and in order to enhance the effect of the magnetic field generated by the second coil 102 on the first coil 101, the second coil 102 is disposed on the side of the housing 120 close to the diaphragm 111. For example, as shown in fig. 2, the diaphragm 111 is disposed near the upper case, and the second coil 102 is disposed inside the upper case.

Further, in order to enable the magnetic field generated by the second coil 102 to cover the first coil 101 as much as possible, the area of the second coil 102 is not smaller than the area of the first coil 101, that is, the area corresponding to the second coil 102 is required to completely cover the area corresponding to the first coil 101.

According to the loudspeaker module provided by the embodiment of the invention, the first coil is arranged on the vibrating diaphragm, the second coil is arranged on the shell, the positions of the first coil and the second coil correspond to each other, and when the loudspeaker module is in an external playing mode, the first coil is enabled to move in a magnetic field generated by the second coil in an enhanced mode, so that external playing bass is enhanced by the first coil and the second coil in cooperation with the coil of the loudspeaker main body, and external playing quality and sound effect are improved.

As shown in fig. 5, an embodiment of the present application further provides an electronic device based on the speaker module, where the electronic device may be a terminal device such as a mobile phone. As shown in fig. 5, the electronic device includes: the method comprises the following steps: as described above, the speaker module 100, the first driving circuit 210 for ac current and the second driving circuit 220 for constant current are provided, the first driving circuit 210 is used for driving the first coil 101 of the speaker module 100, and the second driving circuit 220 is used for driving the second coil 102 of the speaker module 100.

Further, the first driving circuit 110 is also used for driving the speaker body of the speaker module 100.

Further, as shown in fig. 6, the electronic device further includes a control unit 230, such as a Central Processing Unit (CPU), where the control unit 230 is configured to instruct the first driving circuit 210 to turn on the first coil 101 and the speaker body and instruct the second driving circuit 220 to turn on the second coil when the speaker module 100 is in the play-out mode.

Further, the electronic device further includes a receiver unit 240, and the receiver unit 240 is driven by the first driving circuit.

The control unit 230 may control the communication relationship between the first driving circuit 210 and the second driving circuit 220 by monitoring the operation state of the speaker module 100.

When the speaker mode 100 is in the play-out mode, the control unit 230 instructs the first driving circuit 210 to communicate the first coil 101 with the speaker main body, and at the same time, instructs the second driving circuit 220 to turn on or communicate the second coil 102. At this time, the constant current of the second driving circuit 220 drives the second coil 102 to generate a magnetic field, the first coil 101 is driven by the low-frequency alternating current of the first driving circuit 210, and the low-frequency vibration is enhanced by cooperating with the body coil of the speaker main body, so that the external radiation effect of the whole speaker is enhanced;

when the speaker module 100 is in a non-playback mode, for example, in a receiver mode, the control unit 230 instructs the first driving circuit 210 to disconnect the first coil 101 and the speaker main body, connect the receiver unit 240, and simultaneously instructs the second driving circuit 220 to close or disconnect the second coil 102. At this time, the first coil 101 and the second coil 102 do not operate.

Further, the control manner of the control unit 230 for the first driving circuit 210 may be various, and an embodiment of the present application is provided. As shown in fig. 6, the electronic device further includes a switching circuit 250, and the switching circuit 250 is controlled by the control unit 230 to switch whether the first driving circuit 210 is communicated with the first coil 101 or the receiver unit 250.

The switching circuit 250 is a two-in-one analog switch, and the control unit 230 controls the two-in-one analog switch to connect the first coil 101 or the receiver unit 240 through an I2C protocol. When the speaker module 100 is in the play-out mode, the first driving circuit 210 is switched to the first coil 101 through the switching circuit 250; in the non-play mode, the first driving circuit 210 is switched to the receiver unit 240 through the switching circuit 250.

The control unit 230 controls the switching of the second driving circuit 220 through the I2C protocol. When the speaker module 100 is in the play-out mode, the second driving circuit 220 is turned on; in the non-play mode, the second driving circuit 220 is turned off and does not operate.

Other configurations and operations of electronic devices according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

According to the electronic equipment provided by the embodiment of the invention, the electronic equipment comprises a loudspeaker module, a first drive circuit of alternating current and a second drive circuit of constant current, wherein the first drive circuit is used for driving a first coil of the loudspeaker module, and the second drive circuit is used for driving a second coil of the loudspeaker module, so that when the loudspeaker module is in an external playing mode, the first coil and the second coil cooperate with a coil of a loudspeaker main body to enhance external playing bass and improve external playing quality sound effect.

Fig. 7 shows a loudspeaker control method according to an embodiment of the present application, where an execution body of the method may be the electronic device, and a first coil and a second coil are respectively disposed on a diaphragm and a housing of a loudspeaker module, where the first coil corresponds to the second coil in position, as shown in fig. 7, and the method includes the following steps.

Step S710, monitoring the working state of the speaker module.

And S720, when the loudspeaker module is determined to be in the external playing mode, driving the first coil through a first driving circuit of alternating current, and driving the second coil through a second driving circuit of constant current.

And step S730, when the loudspeaker module is determined to be in the non-external-playing mode, driving the receiver unit to work.

The steps S710 to S720 may implement the method embodiments of the speaker module and the electronic device shown in fig. 1 to 6, and repeated portions are not described herein again.

Further, the step S720 includes:

and when the loudspeaker module is determined to be in the external playing mode, the first driving circuit is connected with the first coil by controlling the switching circuit, and the second driving circuit communicated with the second coil is controlled to work.

Further, the step S720 includes:

and when the loudspeaker module is determined to be in a non-external-playing mode, the first driving circuit is connected with the telephone receiver unit by controlling the switching circuit, and the second driving circuit is controlled to be disconnected and not work.

In one embodiment, as shown in fig. 8, the default state of the speaker module is a receiver mode, and at this time, the switching circuit is controlled to connect the first driving circuit and the receiver unit, and the second driving circuit 220 does not work; monitoring whether the loudspeaker module is in a loudspeaker-out mode; if the mobile terminal is in the non-play mode, the default state is still not used; if the first coil is in the external discharge mode, the control unit controls the switching circuit to enable the first driving circuit 210 to be communicated with the first coil, and the second driving circuit works until the external discharge is finished.

Further, the second coil is arranged on one side of the shell close to the diaphragm.

Further, the area of the second coil is not smaller than the area of the first coil.

According to the loudspeaker control method provided by the embodiment of the invention, the electronic equipment monitors the working state of the loudspeaker module; when the loudspeaker module is determined to be in the external playing mode, a first coil is driven through a first driving circuit of alternating current, and a second coil is driven through a second driving circuit of constant current; wherein, first coil is set up in on the vibrating diaphragm of speaker module, the second coil set up in on the casing of speaker module, first coil is corresponding with the position of second coil, thereby when the speaker module is in the mode of putting outward, first coil and second coil strengthen the bass of putting outward in coordination with the coil of speaker main part, promote the sound quality audio of putting outward.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A loudspeaker control method is characterized in that a vibrating diaphragm and a shell of a loudspeaker module are respectively provided with a first coil and a second coil, and the positions of the first coil and the second coil correspond to each other, and the loudspeaker control method comprises the following steps:

monitoring the working state of the loudspeaker module;

2. The method of claim 1, wherein when the speaker module is determined to be in the play-out mode, driving the first coil by a first driving circuit of an alternating current and driving the second coil by a second driving circuit of a constant current comprises:

3. The method of claim 2, further comprising:

4. A method as claimed in any one of claims 1 to 3, characterized in that the second coil is arranged on the side of the housing adjacent to the diaphragm.

5. A method according to any of claims 1-3, wherein the area of the second coil is not smaller than the area of the first coil.

6. A speaker module, comprising: the loudspeaker comprises a shell and a loudspeaker body, wherein the loudspeaker body comprises a vibrating diaphragm, a first coil is arranged on the vibrating diaphragm, a second coil is arranged on the shell, and the first coil corresponds to the second coil in position.

7. The speaker module as recited in claim 6, wherein the second coil is disposed on a side of the housing proximate to the diaphragm.

8. The speaker module as claimed in claim 7, wherein the area of the second coil is not smaller than the area of the first coil.

9. The loudspeaker module of claim 6 wherein the first coil is disposed on the diaphragm surface region by an etching or plating process.

10. A loudspeaker module according to any one of claims 6 to 9 wherein the first coil is driven by a first drive circuit of alternating current and the second coil is driven by a second drive circuit of constant current.

11. An electronic device, comprising: the speaker module as claimed in any one of claims 1-4, a first driving circuit for AC current and a second driving circuit for constant current, the first driving circuit for driving a first coil of the speaker module, the second driving circuit for driving a second coil of the speaker module.

12. The electronic device of claim 11, wherein the first driving circuit is further configured to drive a speaker body of the speaker module.

13. The electronic device according to claim 11, further comprising a control unit configured to instruct the first driving circuit to turn on the first coil and the speaker body and instruct the second driving circuit to turn on the second coil when the speaker module is in the play-out mode.

14. The electronic device of claim 11, further comprising a receiver unit, the receiver unit being driven by the first driving circuit.

15. The electronic device of claim 14, further comprising a switching circuit that is controlled by the control unit to switch whether the first driving circuit is in communication with the first coil or a receiver unit.