Speaker control method, speaker module, and electronic device

Abstract

The present application discloses a loudspeaker control method, a loudspeaker module and an electronic device. The method includes: monitoring the working state of the loudspeaker module; when it is determined that the loudspeaker module is in the external speaker mode, driving a first coil through a first driving circuit of an alternating current, and driving a second coil through a second driving circuit of a constant current; wherein, the first coil is disposed on a diaphragm of the loudspeaker module, the second coil is disposed on a housing of the loudspeaker module, and the positions of the first coil and the second coil correspond to each other. In the present application, when the loudspeaker module is in the external speaker mode, the movement of the first coil in the magnetic field generated by the second coil is enhanced, so as to cooperate with the coil of the loudspeaker main body to enhance the external bass and improve the external sound quality and sound effect.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and particularly relates to a loudspeaker control method, a loudspeaker module, and an electronic device. Background Art

[0002] With the development trend of thinner and lighter mobile phones, due to the relatively small volume of the rear sound cavity of the commonly used micro loudspeakers on mobile phones, the low-frequency performance of the mobile phone's external speaker is insufficient, resulting in poor external low-frequency performance and overall effect.

[0003] A conventional effective way to increase low frequency is to increase the rear volume. For example, adding powder particles such as D-BASS in a limited sound cavity can be equivalent to increasing the sound cavity volume.

[0004] However, even after the rear cavity of the mobile phone meets the design requirements, it can be seen from the amplitude curve modeled by the intelligent power amplifier that the low-frequency response of the loudspeaker is poor. In the low-frequency band of 100hz - 500hz, the amplitude value required by the model will not be reached, still resulting in insufficient external low frequency and unsatisfactory effects. Summary of the Invention

[0005] This application aims to provide a loudspeaker control method, a loudspeaker module, and an electronic device, which can at least solve one of the problems of insufficient external low frequency and unsatisfactory effects of the existing loudspeakers.

[0006] To solve the above technical problems, this application is implemented as follows:

[0007] In a first aspect, an embodiment of this application provides a loudspeaker control method. A first coil and a second coil are respectively arranged on the diaphragm and the housing of the loudspeaker module, and the positions of the first coil and the second coil correspond to each other. The loudspeaker control method includes:

[0008] When it is determined that the loudspeaker module is in the external speaker mode, drive the first coil through a first drive circuit with an alternating current, and drive the second coil through a second drive circuit with a constant current.

[0009] In a second aspect, an embodiment of this application provides a loudspeaker module, including: a housing and a loudspeaker main body. The loudspeaker main body includes a diaphragm, a first coil is arranged on the diaphragm, a second coil is arranged on the housing, and the positions of the first coil and the second coil correspond to each other.

[0010] In a third aspect, an embodiment of this application provides an electronic device, including: the above-mentioned loudspeaker module, a first drive circuit with an alternating current, and a second drive circuit with a constant current. The first drive circuit is used to drive the first coil of the loudspeaker module, and the second drive circuit is used to drive the second coil of the loudspeaker module.

[0011] In an embodiment of the present application, the working state of the speaker module is monitored; when it is determined that the speaker module is in the external speaker mode, a first coil is driven by a first driving circuit of an alternating current, and a second coil is driven by a second driving circuit of a constant current; wherein, the first coil is disposed on the diaphragm of the speaker module, the second coil is disposed on the housing of the speaker module, and the positions of the first coil and the second coil correspond to each other. In the embodiment of the present application, when the speaker module is in the external speaker mode, the movement of the first coil in the magnetic field generated by the second coil is enhanced, so as to cooperate with the coil of the speaker main body to enhance the external speaker bass and improve the external speaker sound quality and sound effect.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0014] Figure 1 is a schematic diagram of a speaker module according to an embodiment of the present invention;

[0015] Figure 2 is an exploded view of a speaker module according to an embodiment of the present invention;

[0016] Figure 3 is a top view of a speaker main body according to an embodiment of the present invention;

[0017] Figure 4 is a bottom view of a speaker housing according to an embodiment of the present invention;

[0018] Figure 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;

[0019] Figure 6 is another schematic structural diagram of an electronic device according to an embodiment of the present invention;

[0020] Figure 7 is a schematic flowchart of a speaker control method according to an embodiment of the present invention;

[0021] Figure 8 is another schematic flowchart of a speaker control method according to an embodiment of the present invention.

[0022] Reference Signs:

[0023] 100—Speaker module, 110—Speaker body, 120—Housing, 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 implementation manners

[0024] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0025] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally means an "or" relationship between the associated objects before and after.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] The following will be combined with Figure 1 Describe the speaker module according to the embodiments of the present invention.

[0029] As Figure 1 - Figure 2As shown, the speaker module 100 includes: a housing 120 and a speaker main body 110. The speaker main body 110 includes a diaphragm 111. A first coil 101 is disposed on the diaphragm 111, and a second coil 102 is disposed on the housing 120. The positions of the first coil 101 and the second coil 102 correspond to each other.

[0030] The setting manners of the first coil 101 and the second coil 102 can be various. Only one implementation manner is given in the embodiments of the present application. For example, Figure 3 As shown, the first coil 101 can be disposed on the surface area of the diaphragm 111 through an etching or coating process, and two pads are led out for connecting a first driving circuit, so as not to additionally occupy the original space of the speaker module. For example, Figure 4 As shown, 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.

[0031] Further, the first coil 101 is driven by a first driving circuit of an alternating current, and the second coil 102 is driven by a second driving circuit of a constant current.

[0032] When the speaker module 100 is in an external playback mode, the first coil 101 is connected to the first driving circuit, and the second coil 102 is connected to the second driving circuit. Among them, the first driving circuit can reuse the control circuit of the speaker module 100. The second coil 102 passes through a constant current to generate a magnetic field. The first coil 101 passes through a low-frequency alternating current signal and enhances its movement in the magnetic field generated by the second coil 102, so as to enhance the vibration of the speaker module 100 in the low-frequency band, achieve the required single-sided up-and-down amplitude, make up for the lack of bass in the external playback scenario, and improve the external sound quality.

[0033] Further, the position where the second coil 102 is disposed can be various. In order to enhance the action of the magnetic field generated by the second coil 102 on the first coil 101, the second coil 102 is disposed on a side of the housing 120 close to the diaphragm 111. For example, Figure 2 As shown, if the diaphragm 111 is disposed close to the upper housing, the second coil 102 is disposed inside the upper housing.

[0034] 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 less than the area of the first coil 101, that is, it is required that the area corresponding to the second coil 102 can completely cover the area corresponding to the first coil 101.

[0035] For the loudspeaker module according to an embodiment of the present invention, the loudspeaker module is provided with a first coil on the diaphragm and a second coil on the housing, and the positions of the first coil and the second coil correspond to each other. When the loudspeaker module is in the external speaker mode, the first coil is caused to move more strongly in the magnetic field generated by the second coil, so as to cooperate with the coil of the loudspeaker main body to enhance the external bass and improve the external sound quality and sound effect.

[0036] As Figure 5 shown, an embodiment of the present application further provides an electronic device based on the above-mentioned loudspeaker module, and the electronic device may be a terminal device such as a mobile phone. As Figure 5 shown, the electronic device includes: the above-mentioned loudspeaker module 100, a first driving circuit 210 for alternating current and a second driving circuit 220 for constant current. The first driving circuit 210 is used to drive the first coil 101 of the loudspeaker module 100, and the second driving circuit 220 is used to drive the second coil 102 of the loudspeaker module 100.

[0037] Further, the first driving circuit 110 is also used to drive the loudspeaker main body of the loudspeaker module 100.

[0038] Further, as Figure 6 shown, the electronic device further includes a control unit 230, such as a central processing unit (CPU). The control unit 230 is used to instruct the first driving circuit 210 to connect the first coil 101 and the loudspeaker main body when the loudspeaker module 100 is in the external speaker mode, and instruct the second driving circuit 220 to connect the second coil.

[0039] Further, the electronic device further includes a receiver unit 240, and the receiver unit 240 is driven by the first driving circuit.

[0040] The control unit 230 can control the connection relationship between the first driving circuit 210 and the second driving circuit 220 by monitoring the operating state of the loudspeaker module 100.

[0041] When the loudspeaker mode 100 is in the external speaker mode, the control unit 230 instructs the first driving circuit 210 to connect the first coil 101 and the loudspeaker main body, and at the same time, instructs the second driving circuit 220 to turn on or connect 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, and the first coil 101 is driven by the low-frequency alternating current of the first driving circuit 210 to cooperate with the body coil of the loudspeaker main body to enhance the low-frequency vibration and enhance the external effect of the whole machine;

[0042] When the speaker module 100 is in a non-external speaker mode, such as the receiver mode, the control unit 230 instructs the first driving circuit 210 to disconnect the first coil 101 and the speaker body and connect the receiver unit 240. At the same time, the control unit 230 instructs the second driving circuit 220 to turn off or disconnect the second coil 102. At this time, the first coil 101 and the second coil 102 do not work.

[0043] Further, the control manner of the control unit 230 for the first driving circuit 210 can be various. An embodiment is given in the embodiments of the present application. As Figure 6 shown, 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 connected to the first coil 101 or the receiver unit 250.

[0044] 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 the I2C protocol. When the speaker module 100 is in the external speaker mode, the first driving circuit 210 is switched to the first coil 101 through the switching circuit 250; when in the non-external speaker mode, the first driving circuit 210 is switched to the receiver unit 240 through the switching circuit 250.

[0045] The control unit 230 controls the switch of the second driving circuit 220 through the I2C protocol. When the speaker module 100 is in the external speaker mode, the second driving circuit 220 is turned on; when in the non-external speaker mode, the second driving circuit 220 is disconnected and does not work.

[0046] Other components and operations of the electronic device according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0047] For the electronic device according to the embodiments of the present invention, the electronic device includes a speaker module, a first driving circuit for alternating current, and a second driving circuit for direct current. The first driving circuit is used to drive the first coil of the speaker module, and the second driving circuit is used to drive the second coil of the speaker module, so that when the speaker module is in the external speaker mode, the first coil and the second coil cooperate with the coil of the speaker body to enhance the external speaker bass and improve the external speaker sound quality and sound effect.

[0048] Figure 7 An embodiment of a speaker control method of the present application is shown. The execution subject of this method can be the above-mentioned electronic device. A first coil and a second coil are respectively arranged on the diaphragm and the housing of the speaker module, and the positions of the first coil and the second coil correspond to each other. As Figure 7As shown, the method includes the following steps.

[0049] Step S710: Monitor the working state of the speaker module.

[0050] Step S720: When it is determined that the speaker module is in the external speaker mode, drive the first coil through the first drive circuit with an alternating current, and drive the second coil through the second drive circuit with a constant current.

[0051] Step S730: When it is determined that the speaker module is not in the external speaker mode, drive the receiver unit to work.

[0052] Steps S710 - S720 can implement the method embodiments of the speaker module and the electronic device as Figure 1 - 6 shown, and the repeated parts will not be described here again.

[0053] Further, step S720 includes:

[0054] When it is determined that the speaker module is in the external speaker mode, through the control of the switching circuit, connect the first drive circuit to the first coil, and control the second drive circuit connected to the second coil to work.

[0055] Further, step S720 includes:

[0056] When it is determined that the speaker module is not in the external speaker mode, through the control of the switching circuit, connect the first drive circuit to the receiver unit, and control the second drive circuit to disconnect and stop working.

[0057] In one embodiment, as Figure 8 shown, the default state of the speaker module is the receiver mode. At this time, the control switching circuit makes the first drive circuit communicate with the receiver unit, and the second drive circuit 220 does not work; monitor whether the speaker module is in the external speaker mode; if it is not in the external speaker mode, the default state remains unchanged; if it is in the external speaker mode, the control unit controls the switching circuit to make the first drive circuit 210 communicate with the first coil, and the second drive circuit works until the external speaker ends.

[0058] Further, the second coil is disposed on a side of the housing close to the diaphragm.

[0059] Further, the area of the second coil is not less than the area of the first coil.

[0060] According to the loudspeaker control method of the embodiment of the present invention, the electronic device monitors the working state of the loudspeaker module; when it is determined that the loudspeaker module is in the external speaker mode, a first driving circuit with an alternating current drives a first coil, and a second driving circuit with a constant current drives a second coil; wherein, the first coil is arranged on the diaphragm of the loudspeaker module, the second coil is arranged on the housing of the loudspeaker module, and the positions of the first coil and the second coil correspond to each other, so that when the loudspeaker module is in the external speaker mode, the first coil and the second coil cooperate with the coil of the loudspeaker main body to enhance the external speaker bass and improve the external speaker sound quality and sound effect.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A loudspeaker control method, which is applied to a loudspeaker module, and is characterized in that, A first coil and a second coil are respectively arranged on the diaphragm and the housing of the speaker module, and the positions of the first coil and the second coil correspond to each other. The speaker control method includes: Monitoring the working state of the speaker module, where the working state includes an external speaker mode and a non-external speaker mode; When it is determined that the speaker module is in the external speaker mode, by controlling a switching circuit, connect a first driving circuit passing a low-frequency alternating current to the first coil to drive the first coil, and control a second driving circuit passing a constant current to work to drive the second coil, so that the second coil generates a magnetic field, and the first coil enhances its movement in the magnetic field generated by the second coil; When it is determined that the speaker module is in the non-external speaker mode, by controlling the switching circuit, connect the first driving circuit to the receiver unit, and control the second driving circuit to be disconnected and not work.

2. The method according to claim 1, characterized in that, The second coil is arranged on the side of the housing close to the diaphragm.

3. The method according to claim 1, wherein The area of the second coil is not less than the area of the first coil.

4. A speaker module, characterized in that, including: A housing and a speaker main body, the speaker main body includes a diaphragm, a first coil is arranged on the diaphragm, a second coil is arranged on the housing, and the positions of the first coil and the second coil correspond to each other. Wherein, the first coil is driven by a first driving circuit passing a low-frequency alternating current, the second coil is driven by a second driving circuit passing a constant current, the second coil generates a magnetic field, and the first coil enhances its movement in the magnetic field generated by the second coil; When the speaker module is in the external speaker mode, by controlling the switching circuit, connect the first driving circuit passing a low-frequency alternating current to the first coil to drive the first coil, and control the second driving circuit passing a constant current to work to drive the second coil, so that the second coil generates a magnetic field, and the first coil enhances its movement in the magnetic field generated by the second coil; When the speaker module is in the non-external speaker mode, by controlling the switching circuit, connect the first driving circuit to the receiver unit, and control the second driving circuit to be disconnected and not work.

5. The loudspeaker module according to claim 4, wherein The second coil is arranged on the side of the housing close to the diaphragm.

6. The speaker module according to claim 5, wherein The area of the second coil is not less than the area of the first coil.

7. The loudspeaker module according to claim 4, wherein, The first coil is placed on the surface area of the diaphragm through an etching or coating process.

8. An electronic device, characterized in that, including: The speaker module as described in any one of claims 4-7, a first driving circuit for alternating current, and a second driving circuit for constant current, where the first driving circuit is used to drive the first coil of the speaker module, and the second driving circuit is used to drive the second coil of the speaker module.

9. The electronic device according to claim 8, wherein The first driving circuit is also used to drive the speaker main body of the speaker module.

10. The electronic device according to claim 8, wherein The electronic device further includes a control unit, and the control unit is used to instruct the first driving circuit to connect the first coil and the speaker main body and instruct the second driving circuit to connect the second coil when the speaker module is in the external speaker mode.

11. The electronic device according to claim 8, wherein The electronic device further includes a receiver unit, and the receiver unit is driven by the first driving circuit.

12. The electronic device according to claim 11, wherein The electronic device further includes a switching circuit, and the switching circuit is controlled by a control unit to switch whether the first driving circuit is connected to the first coil or the receiver unit.

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