WO2021000730A1 - 移动终端及移动终端的发声控制方法 - Google Patents

移动终端及移动终端的发声控制方法 Download PDF

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Publication number
WO2021000730A1
WO2021000730A1 PCT/CN2020/096531 CN2020096531W WO2021000730A1 WO 2021000730 A1 WO2021000730 A1 WO 2021000730A1 CN 2020096531 W CN2020096531 W CN 2020096531W WO 2021000730 A1 WO2021000730 A1 WO 2021000730A1
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WIPO (PCT)
Prior art keywords
sound
mobile terminal
excitation
signal
listening
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PCT/CN2020/096531
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English (en)
French (fr)
Inventor
张永亮
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中兴通讯股份有限公司
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Publication of WO2021000730A1 publication Critical patent/WO2021000730A1/zh

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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
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • This application relates to a mobile terminal, and more specifically, to a mobile terminal and a sound control method of the mobile terminal.
  • the embodiment of the present disclosure provides a mobile terminal, including a body and a sounding surface, the body is used to carry the sounding surface, the mobile terminal further includes an excitation device, the excitation device includes: fixed on the body A first magnet; and an electromagnetic component fixed on the sound surface, the electromagnetic component receives an excitation signal and interacts with the first magnet to drive the sound surface to vibrate and produce sound.
  • the embodiment of the present disclosure also provides a voice control method of a mobile terminal.
  • the mobile terminal includes two voice surfaces and respective excitation devices for the two voice surfaces.
  • the method includes: determining the receiving surface through detection, the The listening surface is the sounding surface used by the current user to answer among the two sounding surfaces; and an excitation device that outputs an excitation signal to the listening surface to excite the listening surface to vibrate and sound.
  • the embodiment of the present disclosure also provides a sound control method of a mobile terminal, the mobile terminal includes a plurality of excitation devices, and different areas of the sound emitting surface are provided with different excitation devices to realize sub-regional vibration and sound.
  • the method includes : Determine the current listening area of the sound emitting surface through detection; and output an excitation signal to an excitation device for the current sound emitting area.
  • FIG. 1 is a schematic diagram of a mobile terminal provided with an excitation device on a sound emitting surface according to an exemplary embodiment of the present disclosure
  • Fig. 2 is a block diagram of a control system for selecting a sound surface in a mobile terminal with double-sided sound according to an exemplary embodiment of the present disclosure
  • Fig. 3 is a schematic diagram of a mobile terminal according to an exemplary embodiment of the present disclosure having two back-to-back excitation devices on two sound emitting surfaces;
  • FIG. 4 is a flowchart of a sound control method for selecting a sound surface according to an exemplary embodiment of the present disclosure
  • FIG. 5 is a flowchart of a control process of a mobile terminal with double-sided sound generation according to an exemplary embodiment of the present disclosure to select a sound surface and suppress vibration on a non-listening surface;
  • Fig. 6 is a block diagram of a control system for realizing regional vocalization in a mobile terminal for regional vocalization according to an exemplary embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of a mobile terminal according to an exemplary embodiment of the present disclosure setting two excitation devices in different areas of a sound emitting surface;
  • Fig. 8 is a flowchart of a voice control method for realizing regional voices according to an exemplary embodiment of the present disclosure
  • FIG. 9 is a schematic diagram of a mobile terminal according to an exemplary embodiment of the present disclosure respectively setting two back-to-back excitation devices in the upper area and the lower area of the two sound emitting surfaces;
  • Fig. 10 is a flowchart of the control process for the mobile terminal in Fig. 9 to realize the selection of the utterance surface and the utterance area, and the vibration suppression of the non-listening surface.
  • the embodiments of the present disclosure adopt the screen sound technology to drive a sound surface (such as a screen) through an exciter, use the sound surface as a vibrating body, and generate sound waves by vibration, which are then transmitted to the human ear.
  • a sound surface such as a screen
  • Exemplary embodiments of the present disclosure provide a mobile terminal, such as a mobile phone, a tablet, and the like.
  • the mobile terminal includes a main body and a sound emitting surface, the main body is used to carry the sound emitting surface, and also includes an excitation device, the excitation device includes:
  • An electromagnetic component fixed on the sound emitting surface receives an excitation signal and interacts with the first magnet to drive the sound emitting surface to vibrate and produce sound.
  • the excitation signal may be an AC signal generated from a sound signal. After the excitation signal is applied to the electromagnetic component, an alternating magnetic field will be generated, which causes the force between the electromagnetic component and the first magnet to change, so that the electromagnetic component drives the fixedly connected sounding surface to vibrate and produce sound.
  • the electromagnetic component may be spaced apart from the first magnet (that is, there is a gap between the two), and an end of the electromagnetic component away from the first magnet is fixedly connected to the sound emitting surface.
  • the electromagnetic component includes: a second magnet fixed on the sound emitting surface and a coil sheathed outside the second magnet, and the coil can pass the excitation signal.
  • the second magnet is spaced apart from the first magnet, and the second magnet can be fixed to the sounding surface by pasting. One end of the second magnet is flat, and the end is directly pasted on the inner surface of the sounding surface. OK.
  • the second magnet and the first magnet are both permanent magnets, and the opposite ends of the second magnet and the first magnet have the same or opposite polarities.
  • the second magnet may also be a soft magnet.
  • the second magnet and the first magnet are both permanent magnets, there will be a basically constant attraction or repulsion between the two. After the coil is added with alternating current, a changing force will be superimposed on the basis of this attraction or repulsion.
  • soft magnets permanent magnets are less prone to demagnetization under certain conditions (such as high temperature) and have high amplitude, so that the vibration amplitude of the sound surface is large and the sound is loud.
  • the mobile terminal of this embodiment uses the above-mentioned excitation device, which can improve the problem of the lack of middle and low frequencies in the sound emitted by the sound surface when other types of excitation devices are used, and improve user satisfaction.
  • a mobile terminal includes a sounding surface 1 and a body 3.
  • the sounding surface 1 includes a screen, and may also include components such as a middle board, and may have different designs.
  • the main body 3 includes other parts except the sounding surface 1, including a middle frame, a printed circuit board, and a rear case 31.
  • the excitation device 2 includes a first magnet 21, a second magnet 22, and a coil 23.
  • the first magnet 21 and the second magnet 22 are both permanent magnets (such as magnets).
  • the magnet shapes include but are not limited to circular, rectangular, T-shaped, and U-shaped. Type and other shapes.
  • the second magnet 22 is pasted on the inner side of the sound emitting surface 1, and the second magnet 22 penetrates the middle of the coil 23, or the coil 23 is sleeved outside the second magnet 22.
  • the coil 23 can also be pasted with the sounding surface 1.
  • the first magnet 21 is fixed on the body 3 (for example, a printed circuit board, a middle frame or other structural parts).
  • a closed sound cavity is formed between the first magnet 21 and the rear shell 31.
  • the opposite ends of the first magnet 21 and the second magnet 22 have the same polarity, and a repulsive force will be generated between the two.
  • the coil 23 After the excitation signal is applied, the coil 23 generates an alternating magnetic field near the second magnet 22, and a repulsive alternating force is generated between the first magnet 21 and the second magnet 22, which pushes the second magnet 22 and the coil 23 to vibrate.
  • the second magnet 22 and the coil 23 then drive the sound emitting surface 1 to vibrate, so that the sound emitting surface 1 emits sound.
  • double-sided screens are also a development trend of mobile phones.
  • a mobile phone with both full screens can be called a dual full screen mobile phone.
  • a double-sided mobile phone has two screens.
  • users need to distinguish which side is the sounding side. Often, misidentification of the sounding side affects the normal answering.
  • An exemplary embodiment of the present disclosure provides a mobile terminal (for example, a dual-full-screen mobile phone), which can realize selective sounding of two sounding surfaces.
  • the sounding surface includes a first sounding surface and a second sounding surface provided on both sides of the body;
  • the mobile terminal includes a plurality of the excitation devices, and electromagnetic components of some of the plurality of excitation devices are fixed On the first sound-emitting surface (such as the inner side), it is used to excite the first sound-emitting surface to vibrate and produce sound; the electromagnetic components of the other excitation devices are fixed on the second sound-emitting surface (such as the inner side) for exciting the The second sounding surface vibrates and produces sound.
  • a plurality of the excitation devices are grouped in pairs, and the two excitation devices in the same group (along the direction perpendicular to the sound emitting surface) are arranged back to back, and the two excitation devices in the same group can share a first magnet, Alternatively, the two first magnets of the two excitation devices in the same group can also be attracted together. When the two excitation devices are arranged back to back, they are relatively close in structure, but this is not necessary.
  • a plurality of the excitation devices can also be arranged staggered, for example, (in a direction parallel to the sounding surface) from bottom to top
  • the first and third excitation devices are used to excite the first sound surface
  • the second and fourth excitation devices are used to excite the second sound surface.
  • a magnetic shielding layer can be added between the two first magnets to avoid the alternating magnetic field from affecting the sound of the other sounding surface when one sounding surface is sounding.
  • the second magnet suppresses the vibration of the other sounding surface. At this time, it is possible to suppress the sound of the other sounding surface without outputting a suppression signal to the excitation device of the other sounding surface.
  • the above-mentioned mobile terminal with double-sided screen can excite the receiving surface to vibrate and sound, and the user can hear sound on any sound-producing surface.
  • the non-receiving surface may also make sounds due to the influence of the alternating magnetic field, and the sounds made may be heard by other people. Therefore, in an example of this embodiment, a system for suppressing the sound of the non-listening surface is also provided. As shown in FIG. 2, the system includes: a first controller 10, a first switch circuit 20, and a first detector. Module 30, where:
  • the first detection module 30 is configured to: determine the receiving surface through detection, and send the determined result to the first controller 10, the receiving surface being used by the current user among the first sounding surface and the second sounding surface. A vocal side to answer.
  • the first detection module can detect by means of biometrics. For example, if it is found that the user's face is facing the first utterance surface, it is determined that the first utterance surface is the receiving surface and the second utterance surface is the non-listening surface.
  • the first controller 10 is configured to control the first switch circuit 10 to output the excitation signal generated according to the sound signal to the excitation device of the listening surface.
  • the first controller 10 may send a control signal to the first switch circuit 20 to realize the above-mentioned control.
  • the excitation signal When the excitation signal is output to the excitation device of the listening surface, it may be part or all of the excitation devices output to the listening surface.
  • the excitation signal can be output to Part of the excitation device on the listening surface can output the excitation signal to all excitation devices on the listening surface when the generating surface is not sub-regional.
  • the above-mentioned first controller may be implemented by a processing device having a logic operation function, such as a digital signal processor.
  • a switch legend is used to schematically represent the first switch circuit 20.
  • the first switch circuit may be a logic switch circuit, and may use a corresponding switch chip or be integrated with other circuits in the chip.
  • the first controller is further configured to output the excitation signal to the excitation device of the listening surface, or output the excitation signal to the excitation device of the listening surface.
  • the first switch circuit is controlled to output the suppression signal to the excitation device of the non-listening surface, so as to suppress the non-listening surface vibration and sound.
  • the other sounding surface of the first sounding surface and the second sounding surface except the receiving surface, the suppression signal is obtained by processing the excitation signal, and the processing includes at least one of inversion and weakening.
  • the reversal and weakening of the excitation signal can be performed before the excitation signal passes through the first switch circuit, or after the excitation signal passes through the first switch circuit.
  • the output of the suppression signal may not require a condition, and when the first controller outputs the excitation signal to the excitation device of the listening surface, the suppression signal is output.
  • the suppression signal is output when the excitation signal is output to the excitation device of the listening surface and the set condition is satisfied.
  • the mobile terminal further includes:
  • the second detection module attached to the first sound emitting surface is configured to detect a vibration signal or a sound signal of the first sound emitting surface, and send the detection result to the first controller;
  • the third detection module attached to the second sound emitting surface is configured to detect a vibration signal or a sound signal of the second sound emitting surface, and send the detection result to the first controller;
  • the first controller determining that the set condition is satisfied includes: determining the non-answering surface according to the detection result of the detection module (may be the second detection module or the third detection module) The magnitude of the vibration signal or the sound signal of the listening surface exceeds the corresponding threshold, and it is determined that the set condition is satisfied. At this time, control the first switch circuit to output the suppression signal to the excitation device of the non-listening surface to suppress the vibration and sound of the non-listening surface,
  • the double-sided screen mobile terminal includes a main body 3, a first sound emitting surface 1 and a second sound emitting surface 1'.
  • the first sound emitting surface 1 and the second sound emitting surface 1' include but are not limited to a screen.
  • the first sound-emitting surface 1 and the second sound-emitting surface 1'of this example may both include a screen (may also include structural members such as a middle plate), in another example, it may also be that one of the sound-emitting surfaces includes a screen, and The other sounding surface does not include the screen but only other structural parts.
  • This double-sided screen mobile terminal includes a first excitation device 2 and a second excitation device 2'arranged back to back. That is, the first magnet 21 of the first excitation device 2 and the first magnet 21' of the second excitation device 2'are the same magnet, of course, they can also be different first magnets.
  • the second magnet 22 and the coil 23 of the first excitation device 2 are attached to the inner side of the first sound emitting surface 1, and the second magnet 22 of the first excitation device 2 penetrates the middle of the coil 23.
  • the second magnet 22' and the coil 23' of the second excitation device 2' are attached to the inner side of the second sound emitting surface 1', and the second magnet 22' of the second excitation device 2'penetrates the middle of the coil 23'.
  • the mobile terminal is also equipped with two sensors on the first sounding surface 1 and the second sounding surface 1'(that is, the detection module above, which can be implemented by using devices such as a camera, etc., already on the screen, not shown in the figure) Out).
  • One sensor is used to determine the current listening surface (that is, the sounding surface used by the user) through biometric recognition (such as fingerprints, face, iris, etc.); the other sensor is used to detect the magnitude of the vibration signal or sound signal of the sounding surface.
  • the mobile terminal includes a controller, a switch circuit and other components (not shown in the figure). The connection between the sensor, controller and switch circuit can be seen in Figure 2.
  • An exemplary embodiment of the present disclosure also provides a sound control method of a mobile terminal, the mobile terminal includes two sound emitting surfaces, both of which are provided with excitation devices, as shown in FIG. 4, the method include:
  • Step 110 Determine a receiving surface through detection, where the receiving surface is one of the two uttering surfaces used by the current user to answer;
  • Step 120 Output the excitation signal to the excitation device of the listening surface to excite the listening surface to vibrate and sound.
  • the excitation device is said to be the excitation device of the sound-emitting surface. It can also be said that the sound-emitting surface is provided with the excitation device.
  • the sound control method of the mobile terminal of this embodiment can select the receiving surface used by the user to vibrate and sound from the two sounding surfaces, and the user does not need to distinguish between the two sounding surfaces.
  • the method further includes: The excitation device for suppressing the output of the signal to the non-listening surface to suppress the vibration and sound of the non-listening surface, the non-listening surface being the other sounding surface of the first sounding surface and the second sounding surface except the receiving surface
  • the suppression signal is obtained by processing the excitation signal, and the processing includes at least one of inversion and attenuation.
  • the satisfaction of the set condition includes: if it is detected that the magnitude of the vibration signal or the sound signal of the non-listening surface exceeds a corresponding threshold, determining that the set condition is satisfied.
  • some weakening processing (such as reducing its amplitude) can be performed on the excitation signal to obtain the suppression signal, and The suppression signal is output to the excitation device of the non-listening surface.
  • the above-mentioned sound control method of the embodiment of the present disclosure can be applied to a mobile terminal having two sounding surfaces such as the double-sided mobile terminal of the embodiment of the present disclosure, such as the double-sided mobile terminal shown in FIG. 3, but it is not limited to this. It is used for mobile terminals that use other excitation devices to produce sound on the utterance surface.
  • FIG. 5 when a user uses a mobile terminal to answer or make a call, first use biometric identification (fingerprint, face, iris, etc.) to determine which voice surface the user uses to answer the call. Assuming that the user uses the first voice surface 1 to answer the call, The coil 23 of an excitation device 2 passes an alternating current, and the alternating magnetic field generated by the coil 23 produces a varying effect on the first magnet 21 of the first excitation device 2 and the second magnet 22' of the second excitation device 2'respectively.
  • biometric identification fingerprint, face, iris, etc.
  • the first magnet 21 of the first excitation device 2 and the second magnet 22' of the second excitation device 2' will also give a reaction force to the coil 23 and the second magnet 22 of the first excitation device 2, respectively.
  • a sensor attached to the second sound emitting surface 1' can detect the magnitude of the vibration signal of the second sound emitting surface 1', and the magnitude of the vibration signal can be represented by the amplitude and frequency of the vibration signal.
  • the size of the sound signal can also be directly detected, which can be represented by loudness, and the vibration signal and the sound signal of the same sound emitting surface are related.
  • the corresponding threshold is set in the mobile terminal system. This threshold corresponds to the maximum sound allowed when the second sounding surface 1'is used as a non-listening surface. If the sound signal is detected, the loudness threshold can be set. If the vibration signal is detected, it can be set.
  • the amplitude threshold and/or frequency threshold of the vibration can be set in the mobile terminal system.
  • the suppression signal may not be output to the excitation device of the second sounding surface 1'; if it is greater than the corresponding threshold
  • the threshold value represents a high risk of call information leakage. At this time, the suppression signal is output to the coil 23' of the second excitation device 2'.
  • the excitation signal is reversed and weakened to obtain the suppression signal.
  • a set of filter coefficients ⁇ is generated according to the difference between the magnitude of the detected signal and the corresponding threshold (the greater the difference, the larger the ⁇ value can be), and the reverse signal S A of the excitation signal is multiplied by ⁇ to obtain the inverse
  • the suppression signal ⁇ *S A after the directional and weakening processing is fed back to the coil 23' of the second excitation device 2', and the suppression signal input coil 23' will also cause the second sound surface 1'to vibrate, which suppresses the vibration component generated by the signal It is opposite to the direction of the vibration component generated by the second sounding surface 1'after the coil 23 of the first excitation device 2 passes the excitation signal, so that the vibration of the second sounding surface 1'can be reduced or eliminated, thereby reducing or weakening the information during the call Risk of leakage.
  • the sensor on the second sound emitting surface 1' can continuously detect the vibration signal or sound signal of the second
  • the mobile phone uses the earpiece to make a sound
  • the user can see the earpiece, so they can know the exact sounding position.
  • An exemplary embodiment of the present disclosure provides a mobile terminal.
  • the sound emitting surface includes a plurality of areas, for example, an upper area and a lower area, and each area is provided with the excitation device.
  • the sound emitting surface of the mobile terminal includes a plurality of the excitation devices, and the electromagnetic component of the excitation device arranged in each area is fixedly connected to the sound emitting surface of the area.
  • the sound emitting surface is divided into an upper area or a lower area.
  • the mobile terminal further includes a second controller 40, a second switch circuit 50, and a fourth detection module 60, wherein:
  • the fourth detection module 60 is configured to determine the current listening area of the sound emitting surface through detection, and send the determined result to the second controller 40.
  • the current listening area is an upper area or a lower area of the sound emitting surface;
  • the second controller 40 is configured to control the second switch circuit 50 to output the excitation signal generated according to the sound signal to the excitation device of the current listening area.
  • the second controller 40 may send a control signal to the second switch circuit 50 to realize the above-mentioned control.
  • the above-mentioned second controller may be implemented by a processing device having a logic operation function, such as a digital signal processor.
  • the second switch circuit can be implemented with a logic switch device or the like.
  • the fourth detection module may be implemented by using a sensor for posture detection such as a gravity sensor in the mobile terminal. In the default vertical placement state, the upper area is the current listening area. If it is detected that the mobile terminal is in the default vertical placement state, the current answering area is determined to be the upper area, and if it is detected that the mobile terminal is placed upside down, it is determined that the current answering area is the lower area.
  • the fourth detection module may also use biometric technology to achieve detection, which is not limited in the present disclosure.
  • the screen can be divided into an upper area and a lower area by the connection between the midpoints of the two long sides of the screen.
  • the single-sided voice-emitting mobile terminal as shown in FIG. 7 includes a main body 3 and a voice-emitting surface 1.
  • the voice-emitting surface has two excitation devices which are respectively installed in the upper and lower regions of the voice.
  • the excitation device adopts the excitation device of the above-mentioned embodiment of the present disclosure, which will not be repeated here.
  • a gravity sensor (not shown in the figure) is provided in the mobile terminal.
  • the posture of the mobile phone can be determined, and the user is currently using the upper area to answer or the lower area. If the upper area is used to answer, the excitation signal is output to the excitation device in the upper area. If the lower area is used to answer, Then, the excitation signal is output to the excitation device in the lower area, and the electromagnetic component of the excitation device in the corresponding area is vibrated, which drives the sound surface to vibrate and sound together.
  • An exemplary embodiment of the present disclosure also provides a sound control method of a mobile terminal.
  • the mobile terminal includes a plurality of excitation devices, and different excitation devices are arranged on different areas of the sound surface of the mobile terminal to realize sub-regional vibration and sound.
  • the method includes:
  • Step 210 Determine the current answering area in the multiple areas of the sounding surface through detection
  • Step 220 Output the excitation signal to the excitation device in the current listening area.
  • the voice control method of the mobile terminal of this embodiment can realize sub-regional voice on the voice surface without requiring the user to distinguish the placement direction of the mobile terminal.
  • the mobile terminal is the mobile terminal that produces sound by regional vibration in the above-mentioned embodiment of the present disclosure.
  • the mobile terminal may be, for example, a full-screen mobile phone.
  • the sound emitting surface includes a screen, and the screen may be divided into upper parts. Area and lower area. The user does not need to distinguish the up and down direction of the mobile phone to realize normal answering.
  • An exemplary embodiment of the present disclosure also provides a mobile terminal.
  • a first sounding surface 1 and a second sounding surface 1' are respectively provided on both sides of the body 3 of the mobile terminal.
  • Each sounding surface is divided into an upper area and a lower area.
  • the upper area includes a set of (ie, two) excitation devices arranged back to back, and the electromagnetic components of the two excitation devices are respectively fixedly connected to the inner sides of the two sound emitting surfaces.
  • the lower area also includes a set of (ie, two) excitation devices arranged back to back. Two excitation devices in the same group share a first magnet, and the first magnet is fixed on a body such as a hub.
  • the specific structure of the excitation device can be seen in the above-mentioned embodiment, which will not be described in detail here.
  • At least one of the two sound emitting surfaces is a screen, and the other sound surface may be a screen or other structural parts.
  • the two sounding surfaces of the mobile terminal of this embodiment have respective excitation devices, and different regions of the same sounding surface are also provided with respective excitation devices. Therefore, both the selection of the sounding surface and the sounding by regions can be realized.
  • the mobile terminal of this embodiment also has a detection module, a switch circuit, and a controller required for realizing the selection of the sounding surface and the sounding of different regions. Please refer to the above embodiments. It should be noted that, for a mobile terminal that has two sounding surfaces and each sounding surface is divided into regions to emit sound, the first switch circuit and the second switch circuit can physically use the same switch module. The first controller and the second controller can also use the same device (such as DSP).
  • the sub-regional voice control in the above embodiment and the voice control for automatically identifying the receiving surface exist at the same time.
  • the control process will be briefly described below.
  • the control process ends. If the magnitude of the detected vibration signal or sound signal is greater than the corresponding threshold, the excitation signal is processed to obtain a suppression signal, and the suppression signal is output to the excitation device of the second sounding surface.
  • the suppression signal is output to the excitation device of the upper and lower regions of the second sounding surface at the same time, two suppression signals It can be different, for example using different filter coefficients. After that, continue to detect the magnitude of the vibration signal or sound signal of the second sound emitting surface and continue subsequent processing.
  • the above-mentioned embodiments can solve the problem of privacy leakage by double-sided vocalization, and can also solve the problem that users need to distinguish the up and down directions of the mobile phone.
  • the terms “installed”, “connected”, “connected”, “fixed”, etc. should be understood in a broad sense, except for clear instructions or inferences based on corresponding instructions.
  • “connected” may mean The fixed connection can also be a detachable connection or an integral connection; it can be directly connected or indirectly connected through an intermediate medium.
  • the specific meaning of the above-mentioned terms in the present disclosure can be understood according to specific circumstances.
  • the description of the terms “one embodiment”, “some embodiments”, “specific embodiments”, etc. means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in the present disclosure In at least one embodiment or example.
  • the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example.
  • the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

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  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Telephone Function (AREA)
  • Telephone Set Structure (AREA)

Abstract

一种移动终端和一种移动终端的发声控制方法，所述移动终端包括发声面和激励装置，所述激励装置包括第一磁体和固定在发声面上的电磁组件，所述电磁组件可接收激励信号，带动发声面振动发声；在所述移动终端包括两个发声面或者区分区域发声时，可以将激励信号输出到接听面或者接听区域的激励装置。

Description

移动终端及移动终端的发声控制方法 技术领域
本申请涉及移动终端，更具体地，涉及移动终端及移动终端的发声控制方法。
背景技术
全面屏概念在近两年的手机、平板等电子消费品中愈演愈烈，随着手机全面屏的普及，各厂商争相扩大手机的屏占比，部分手机已然将屏占比达到了90％以上，但是传统器件的摆放日渐困难，尤其是传统受话器的位置，逐步被隐藏甚至取消；目前，传统的听筒还是以动圈式接收器为主，需要在发声面上额外开孔，在屏幕听筒位置开孔的问题一直未能解决。
公开内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本公开实施例提供了一种移动终端，包括本体和发声面，所述本体用于承载所述发声面，所述移动终端还包括激励装置，所述激励装置包括：固定在所述本体上的第一磁体；及固定在所述发声面上的电磁组件，所述电磁组件接受激励信号而与所述第一磁体相互作用，带动所述发声面振动发声。
本公开实施例还提供了一种移动终端的发声控制方法，所述移动终端包括两个发声面和所述两个发声面各自的激励装置，所述方法包括：通过检测确定接听面，所述接听面是所述两个发声面中当前用户用来接听的发声面；及将激励信号输出到所述接听面的激励装置，以激励所述接听面振动发声。
本公开实施例还提供了一种移动终端的发声控制方法，所述移 动终端包括多个激励装置，所述发声面的不同区域设置有不同的激励装置以实现分区域振动发声，所述方法包括：通过检测确定所述发声面的当前接听区域；及将激励信号输出到所述当前发声区域的激励装置。
在阅读并理解了附图和详细描述后，可以明白本公开的其他方面。
附图说明
附图用来提供对本公开技术方案的进一步理解，并且构成说明书的一部分，与本申请的实施例一起用于解释本公开的技术方案，并不构成对本公开技术方案的限制。
图1是本公开一示例性实施例的移动终端在一个发声面设置有一个激励装置的示意图；
图2是本公开一示例性实施例的双面发声的移动终端中用于实现发声面选择的控制系统的模块图；
图3是本公开一示例性实施例的移动终端在两个发声面设置两个背靠背的激励装置的示意图；
图4是本公开一示例性实施例的用于实现发声面选择的发声控制方法的流程图；
图5是本公开一示例性实施例的双面发声的移动终端实现发声面选择及对非接听面进行振动抑制的控制过程的流程图；
图6是本公开一示例性实施例的分区域发声的移动终端中用于实现分区域发声的控制系统的模块图；
图7是本公开一示例性实施例的移动终端在一个发声面的不同区域设置两个激励装置的示意图；
图8是本公开一示例性实施例的用于实现分区域发声的发声控制方法的流程图；
图9是本公开一示例性实施例的移动终端在两个发声面的上部区域和下部区域分别设置两个背靠背的激励装置的示意图；
图10是图9中的移动终端实现发声面和发声区域选择、及对非 接听面进行振动抑制的控制过程的流程图。
具体实施方式
本申请描述了多个实施例，但是该描述是示例性的，而不是限制性的，并且对于本领域的普通技术人员来说显而易见的是，在本申请所描述的实施例包含的范围内可以有更多的实施例和实现方案。尽管在附图中示出了许多可能的特征组合，并在具体实施方式中进行了讨论，但是所公开的特征的许多其它组合方式也是可能的。除非特意加以限制的情况以外，任何实施例的任何特征或元件可以与任何其它实施例中的任何其他特征或元件结合使用，或可以替代任何其它实施例中的任何其他特征或元件。
为了追求极致的“屏占比”，本公开实施例采用屏幕发声技术，通过一个激励器驱动发声面(如屏幕)，以发声面作为振动体，借由振动产生声波，然后传送到人耳。
本公开示例性实施例提供了一种移动终端，例如手机、平板等。该移动终端包括本体和发声面，所述本体用于承载所述发声面，还包括激励装置，所述激励装置包括：
固定在所述本体上的第一磁体；
固定在所述发声面上的电磁组件，所述电磁组件接受激励信号与所述第一磁体相互作用带动所述发声面振动发声。
所述激励信号可以是根据声音信号生成的交流信号。电磁组件通入激励信号后，会产生交变的磁场，使得电磁组件与第一磁体之间的作用力发生变化，使得电磁组件带动固定连接的发声面振动发声。在一示例中，电磁组件可以与第一磁体间隔设置(即两者之间具有空隙)，电磁组件远离所述第一磁体的一端与发声面固定连接。
在一示例中，所述电磁组件包括：固定在所述发声面的第二磁体和套设在所述第二磁体外的线圈，所述线圈可通入所述激励信号。在一示例中，所述第二磁体与第一磁体间隔设置，第二磁体与发声面的固定可以采用粘贴的方式，第二磁体的一端为平面，将该端直接粘 贴在发声面内侧的表面即可。
在一示例中，所述第二磁体和第一磁体均为永磁体，所述第二磁体与所述第一磁体相对的两端极性相同或相反。另一示例中，第二磁体也可以为软磁体。第二磁体和第一磁体均为永磁体的情况下，两者之间会产生基本恒定的吸力或斥力，在线圈加入交流电后，在这个吸力或斥力的基础上会再叠加一个变化的力，相比于软磁体，使用永磁体在特定条件(例如高温)下更不易退磁、幅值高，从而发声面的振动幅度大，发声声音大。
本实施例的移动终端使用上述激励装置，可以改善使用其他类别的激励装置时发声面发出的声音存在中低频缺失的问题，提升用户满意度。
本公开一示例性实施例如图1所示，一移动终端包括发声面1和本体3，本示例中，发声面1包括屏幕，还可以包括中板等构件，可以有不同的设计。本体3包括除发声面1之外的其他部件，包括中框、印刷电路板及后壳31等。激励装置2包括第一磁体21、第二磁体22和线圈23，第一磁体21和第二磁体22均为永磁体(如磁铁)，磁铁形状包括但不限于圆形、矩形、T型和U型等形状。第二磁体22粘贴在发声面1的内侧，第二磁体22贯穿在线圈23中间，或者说线圈23套设在第二磁体22之外。线圈23也可以与发声面1粘贴在一起。第一磁体21固定在本体3(例如印刷电路板、中框或者其他结构件)上。在第一磁体21与后壳31之间组成一个密闭的音腔。在本示例中，第一磁体21和第二磁体22相对的两端极性相同，两者之间会产生相斥的力。通入激励信号后，线圈23在第二磁体22附近产生交变磁场，第一磁体21和第二磁体22之间相应产生相斥的交变作用力，推动第二磁体22和线圈23振动，第二磁体22和线圈23再带动发声面1振动，进而实现发声面1发声。
目前，双面屏也是手机的一种发展趋势，两个屏幕均是全面屏的手机可称为双全面屏手机。双面屏手机有两个屏幕，用户拿着双面 屏手机接打电话时需要区分哪一面是发声面，经常有错认了发声面就影响正常接听的情况。
本公开一示例性实施例提供了一种移动终端(例如双全面屏手机)，可以实现两个发声面的选择发声。所述发声面包括设置在所述本体两侧的第一发声面和第二发声面；所述移动终端包括多个所述激励装置，多个所述激励装置中的部分激励装置的电磁组件固定在所述第一发声面上(如内侧)，用于激励所述第一发声面振动发声；其余激励装置的电磁组件固定在所述第二发声面上(如内侧)，用于激励所述第二发声面振动发声。在一示例中，多个所述激励装置两两为一组，同组的两个激励装置(沿垂直于发声面的方向)背靠背设置，同组的两个激励装置可以共用一个第一磁体，或者，同组的两个激励装置的两个第一磁体也可以吸合在一起。两个激励装置背靠背设置时，在结构上比较紧密，但不是必须如此，在另一示例中，多个所述激励装置也可以错开布置，例如，(沿平行于发声面的方向)从下至上的第1个和第3个激励装置用于激励第一发声面，第2个和第4个激励装置用于激励第二发声面。在另一示例中，同组的两个激励装置背靠背设置时，可以在两个第一磁体之间加一个磁屏蔽层，以在一个发声面发声时尽量避免交变磁场影响另一发声面的第二磁体，抑制另一发声面的振动，此时可以不使用向另一发声面的激励装置输出抑制信号的方式来抑制另一发声面发声。
上述双面屏的移动终端可以激励接听面振动发声，用户在任意一个发声面均可以听到声音。但是，非接听面因为交变磁场的影响，也可能会发出声音，发出的声音有可能会被其他人听到。因而，在本实施例的一个示例中，还设置了一套用于抑制非接听面发声的系统，如图2所示，该系统包括：第一控制器10、第一开关电路20和第一检测模块30，其中：
所述第一检测模块30设置为：通过检测确定接听面，将确定的结果发送给所述第一控制器10，所述接听面是所述第一发声面和第二发声面中当前用户用来接听的一发声面。第一检测模块可以通过生物识别的方式来检测，例如，如果发现用户的面部朝向第一发声面， 则确定第一发声面为接听面，第二发声面为非接听面。
所述第一控制器10设置为：控制所述第一开关电路10将根据声音信号生成的激励信号输出到所述接听面的激励装置。第一控制器10可以向所述第一开关电路20发送控制信号来实现上述控制。将激励信号输出到所述接听面的激励装置时，可以是输出到所述接听面的部分或全部激励装置，当发声面设置有多个激励装置且分区域发声时，可以将激励信号输出到接听面的部分激励装置，当发生面不是分区域发声时，可将激励信号输出到接听面的全部激励装置。
上述第一控制器可以用数字信号处理器等具有逻辑运算功能的处理器件来实现。图中用一个开关图例示意性的表示第一开关电路20，第一开关电路可以是逻辑开关电路，可以使用相应开关芯片或者和其他电路一起集成在芯片中。
当多个激励装置两两一组背靠背设置时，一个激励装置激励一发声面振动发声时，其交变的磁场也会影响与其同组的另一个激励装置，使得该另一个激励装置的第一磁体和第二磁体之间也在一定程度上产生变化的力，从而带动另一发声面振动发声。为了避免这种情况，在一示例中，所述第一控制器还设置为：将所述激励信号输出到所述接听面的激励装置时，或者将所述激励信号输出到所述接听面的激励装置且设定条件满足时，执行以下处理：控制所述第一开关电路将抑制信号输出到非接听面的激励装置，以抑制所述非接听面振动发声，所述非接听面是所述第一发声面和第二发声面中除所述接听面外的另一发声面，所述抑制信号通过对所述激励信号进行处理得到，所述处理包括反向和弱化中的至少一种。对激励信号的反向和弱化处理可以在激励信号通过第一开关电路之前进行，也可以在激励信号通过第一开关电路之后进行。
在一示例中，抑制信号的输出可以不需要条件，第一控制器将所述激励信号输出到所述接听面的激励装置时，即输出所述抑制信号。在另一示例中，在将所述激励信号输出到所述接听面的激励装置且设定条件满足时再输出所述抑制信号，该示例中，所述移动终端还包括：
附着在所述第一发声面上的第二检测模块，设置为：检测所述 第一发声面的振动信号或声音信号，将检测结果发送给所述第一控制器；
附着在所述第二发声面上的第三检测模块，设置为：检测所述第二发声面的振动信号或声音信号，将检测结果发送给所述第一控制器；
所述第一控制器判定设定条件满足，包括：根据附着在所述非接听面的检测模块(可能是第二检测模块，也可能是第三检测模块)的检测结果，如确定所述非接听面的振动信号或声音信号的大小超过相应的阈值，判定所述设定条件满足。此时，再控制所述第一开关电路将所述抑制信号输出到非接听面的激励装置，以抑制所述非接听面振动发声，
本公开一示例性实施例提供了一种双面屏移动终端，如图3所示，此双面屏移动终端包括本体3、第一发声面1和第二发声面1’。第一发声面1和第二发声面1’包括但不限于屏幕。虽然本示例的第一发声面1和第二发声面1’可均包括屏幕(还可以包括中板等结构件)，但在另一示例中，也可以是其中的一个发声面包括屏幕，而另一发声面不包括屏幕而仅包括其他结构件。
此双面屏移动终端包括背靠背设置的第一激励装置2和第二激励装置2’。即第一激励装置2的第一磁体21和第二激励装置2’的第一磁体21’为同一磁体，当然也可以是不同的第一磁体。第一激励装置2的第二磁体22和线圈23贴在第一发声面1的内侧，第一激励装置2的第二磁体22贯穿于线圈23中间。第二激励装置2’的第二磁体22’和线圈23’贴在第二发声面1’的内侧，第二激励装置2’的第二磁体22’贯穿于线圈23’中间。该移动终端还在第一发声面1和第二发声面1’上均设置了两个传感器(即上文的检测模块，可以利用屏幕上已有的器件如摄像头等来实现，图中未示出)。一个传感器用于通过生物识别(如指纹、面部、虹膜等)确定当前的接听面(即用户使用的发声面)；另一个传感器用于检测所在发声面的振动信号或声音信号的大小。该移动终端包括控制器、开关电路等部件(图 中未示出)。传感器、控制器和开关电路之间的连接可参见图2。
本公开一示例性实施例还提供了一种移动终端的发声控制方法，所述移动终端包括两个发声面，所述两个发声面均设置有激励装置，如图4所示，所述方法包括：
步骤110，通过检测确定接听面，所述接听面是所述两个发声面中当前用户用来接听的一发声面；
步骤120，将激励信号输出到所述接听面的激励装置，以激励所述接听面振动发声。
文中，如一激励装置的电磁组件固定在一发声面上，则称该激励装置是该发声面的激励装置，也可以说，该发声面设置有该激励装置。
本实施例的移动终端的发声控制方法可以从两个发声面中选择用户使用的接听面振动发声，用户无需区分两个发声面。
在一示例中，将所述激励信号输出到所述接听面的激励装置时，或者将所述激励信号输出到所述接听面的激励装置且设定条件满足时，所述方法还包括：将抑制信号输出到非接听面的激励装置，以抑制所述非接听面振动发声，所述非接听面是所述第一发声面和第二发声面中除所述接听面外的另一发声面，所述抑制信号通过对所述激励信号进行处理得到，所述处理包括反向和弱化中的至少一种。在一示例中，所述设定条件满足包括：如检测到所述非接听面的振动信号或声音信号的大小超过相应的阈值，判定所述设定条件满足。为了使非接听面的激励装置的振动较弱，因而除了使激励信号反向外，还可以对激励信号做一些弱化处理(如将其幅值变小)，以得到所述抑制信号，并将所述抑制信号输出到所述非接听面的激励装置。
本公开实施例的上述发声控制方法可以应用于本公开实施例的双面移动终端等具有两个发声面的移动终端，例如图3所示的双面移动终端，但不局限于此，也可以用于使用其他激励装置来实现发声面发声的移动终端。
下图结合图3所示的移动终端说明一下双面屏移动终端的发声控制过程。请参见图5，当用户使用移动终端接听或拔打电话时，首先通过生物识别(指纹、面部、虹膜等)确定用户使用哪个发声面接听，假定用户使用第一发声面1接听，则给第一激励装置2的线圈23通交变的电流，线圈23产生的交变磁场分别对第一激励装置2的第一磁体21和第二激励装置2’的第二磁体22’产生一个变化的作用力，第一激励装置2的第一磁体21和第二激励装置2’的第二磁体22’也分别会给第一激励装置2的线圈23和第二磁体22一个反作用力，力的相互作用会使第一发声面1和第二发声面1’一起振动，且第一发声面1振动剧烈，第二发声面1’振动微弱，导致用户使用第一发声面1拨打或接听电话时有信息泄露的风险。
本示例中，贴在第二发声面1’上的一传感器可以检测第二发声面1’的振动信号的大小，振动信号的大小可以用振动信号的幅值、频率等表示。在另一示例中，也可以直接检测声音信号的大小，可以用响度来表示，同一发声面的振动信号和声音信号是相关的。移动终端系统内部设置相应的阈值，此阈值对应于第二发声面1’作为非接听面时允许的最大声音，如检测的是声音信号，可以设置响度阈值，如检测的是振动信号，可以设置振动的幅度阈值和/或频率阈值。如果检测到的第二发声面1’的振动信号或声音信号的大小未超过相应的阈值，代表通话信息泄露风险小，可以不向第二发声面1’的激励装置输出抑制信号；若大于相应阈值，代表通话信息泄露风险大，此时将所述抑制信号输出到第二激励装置2’的线圈23’。
在一示例中，对激励信号进行反向和弱化处理以得到所述抑制信号。例如，根据检测到的信号的大小与相应阈值的差值产生一组滤波系数ɑ(差值越大，ɑ值可以越大)，用ɑ乘以激励信号的反向信号S A，得到经反向和弱化处理后的抑制信号ɑ*S A，反馈给第二激励装置2’的线圈23’，抑制信号输入线圈23’也会使第二发声面1’振动，此抑制信号产生的振动分量与第一激励装置2的线圈23通入激励信号后使第二发声面1’产生的振动分量的方向相反，从而可以减弱或消除第二发声面1’的振动，进而降低或者减弱通话时信息泄 露的风险。在接听过程中，第二发声面1’上的传感器可以持续检测第二发声面1’的振动信号或声音信号，继续对比相应阈值，如此循环。
依据上述实施例的方案，用户在使用双面屏的移动终端(如双全面屏手机)时，就不需要区分哪一面是发声面，也可以避免信息泄露。
手机使用听筒发声时，用户可以看到听筒，所以可以知道准确的发声位置。但在全面屏使用屏幕发声技术时，用户难以知道准确的发声位置，需要先区别手机的上下方向，才能正常接听。
本公开一示例性实施例提供了一种移动终端。所述发声面包括多个区域，例如包括上部区域和下部区域，每一区域设置有所述激励装置。在该示例中，所述移动终端的发声面包括多个所述激励装置，每一区域设置的所述激励装置的电磁组件固定连接在该区域的发声面上。
在一示例中，所述发声面分为上部区域或下部区域，如图6所示，所述移动终端还包括第二控制器40、第二开关电路50和第四检测模块60，其中：
所述第四检测模块60设置为：通过检测确定所述发声面的当前接听区域，将确定的结果发送给所述第二控制器40。在一个示例中，所述当前接听区域为所述发声面的上部区域或下部区域；
所述第二控制器40设置为：控制所述第二开关电路50将根据声音信号生成的所述激励信号输出到所述当前接听区域的激励装置。所述第二控制器40可以向所述第二开关电路50发送控制信号来实现上述控制。
上述第二控制器可以用数字信号处理器等具有逻辑运算功能的处理器件来实现。第二开关电路可以用逻辑开关器件等实现。在一个示例中，第四检测模块可以使用移动终端里的重力传感器等用于姿态检测的传感器来实现。在默认的竖直放置状态，上部区域为当前接听区域。如果检测到移动终端为默认的竖直放置状态，则确定当前接听 区域为上部区域，如果检测到移动终端为颠倒放置状态，则确定当前接听区域为下部区域。在另一示例中，第四检测模块也可以用生物识别技术来实现检测，本公开对此不做局限。
在一示例中，对于全面屏手机，可以用屏幕两个长边的中点的连线将屏幕分为上部区域和下部区域。每一个区域里都有至少一个激励装置。如图7所示的单面发声移动终端，包括本体3和一个发声面1，该发声面具有两个激励装置，分别安装在该发声面的上部区域和下部区域。激励装置采用本公开上述实施例的激励装置，这里不再赘述。该移动终端里设置有重力传感器(图中未示出)。根据重力传感器的检测数据可以确定手机的姿态，判断用户当前使用上部区域接听还是下部区域接听，如果是使用上部区域接听，则将激励信号输出到上部区域的激励装置，如果是使用下部区域接听，则将激励信号输出到下部区域的激励装置，使相应区域的激励装置的电磁组件振动，带动发声面一起振动发声。
本公开一示例性实施例还提供了一种移动终端的发声控制方法，所述移动终端包括多个激励装置，所述移动终端的发声面的不同区域设置有不同的激励装置实现分区域振动发声，如图8所示，所述方法包括：
步骤210，通过检测确定所述发声面多个区域中的当前接听区域；
步骤220，将激励信号输出到所述当前接听区域的激励装置。
本实施例的移动终端的发声控制方法可以实现发声面的分区域发声，无需用户区分移动终端的放置方向。
在一示例中，所述移动终端为本公开上述实施例中的分区域振动发声的移动终端，所述移动终端可以为如全面屏手机，所述发声面包括屏幕，所述屏幕可以分为上部区域和下部区域。用户无需区分手机的上下方向，就可以实现正常接听。
本公开一示例性实施例还提供了一种移动终端，如图9所示，该移动终端的本体3两侧分别设置第一发声面1和第二发声面1’。 每一个发声面又分为上部区域和下部区域。在上部区域包括背靠背设置的一组(即两个)激励装置，该两个激励装置的电磁组件分别固定连接在两个发声面的内侧。在下部区域也包括背靠背设置的一组(即两个)激励装置。同组的两个激励装置共用一个第一磁体，第一磁体固定在本体如中枢上。激励装置的具体结构见上文所述实施例，这里不再详细说明。两个发声面中有至少一个发声面为屏幕，另一个发声面可以为屏幕或者其他结构件。
本实施例的移动终端的两个发声面有各自的激励装置，而同一发声面的不同区域也设置有各自的激励装置，因此，既可以实现发声面选择，也可以实现分区域发声。
本实施例的移动终端也具有用于实现发声面选择和分区域发声所需的检测模块、开关电路和控制器，可参见上文的实施例。需要说明的是，对于有两个发声面而每一发声面又分区域发声的移动终端来说，上述第一开关电路和第二开关电路在实体上可以使用同一开关模块。第一控制器和第二控制器也可以使用同一器件(如DSP)。
对于本实施例的移动终端，以双全面屏手机为例，上述实施例的分区域的发声控制和自动识别接听面的发声控制是同时存在的，请参见图10，下面简单描述一下控制过程。用户接听或拔打电话时，假定通过生物识别装置确定第一发声面为接听面，通过重力传感器确定第一发声面的上部区域为当前接听区域，则将根据声音信号生成的激励信号输出到第一发声面的上部区域的激励装置，此时第二发声面也会在一定程度上随之振动。检测第二发声面的振动信号或声音信号的大小，此时可以只检测第二发声面的上部区域，也可以同时检测第二发声面的上部区域和下部区域。判断检测到的振动信号或声音信号的大小是否大于相应的阈值，如果检测到的振动信号或声音信号的大小不大于相应的阈值，控制过程结束。如果检测到的振动信号或声音信号的大小大于相应的阈值，则对所述激励信号进行处理得到抑制信号，输出抑制信号到第二发声面的激励装置，此时如果只有第二发声面的上部区域的振动信号或声音信号的大小大于相应的阈值，可以只输出抑制信号到第二发声面的上部区域的激励装置。如果第二发声面 的上部区域和下部区域的振动信号或声音信号的大小均大于设定的阈值，则同时输出抑制信号到第二发声面的上部区域和下部区域的激励装置，两个抑制信号可以不同，例如采用不同的滤波系数。之后，继续检测第二发声面的振动信号或声音信号的大小并继续后续处理。
上述实施例既能解决双面发声泄露隐私的问题，也能解决用户需要区分手机的上下方向的问题。
在本公开的描述中，术语“安装”、“相连”、“连接”、“固定”等，除了有明确的说明或者可以根据相应说明推定外，应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接、或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。
在本说明书的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
虽然本公开所揭露的实施方式如上，但仅为便于理解本公开而采用的实施方式，并非用以限定本公开。任何本公开所属领域内的技术人员，在不脱离本公开所揭露的精神和范围的前提下，可以在实施的形式及细节上进行任何的修改与变化，但本公开的专利保护范围仍须以所附的权利要求书所界定的范围为准。

Claims (16)

  1. 一种移动终端，包括本体和发声面，所述本体配置为承载所述发声面，所述移动终端还包括激励装置，所述激励装置包括：
    固定在所述本体上的第一磁体；
    固定在所述发声面上的电磁组件，所述电磁组件接受激励信号而与所述第一磁体相互作用，带动所述发声面振动发声。
  2. 根据权利要求1所述的移动终端，其中，
    所述电磁组件包括：固定在所述发声面的第二磁体和套设在所述第二磁体外的线圈，所述线圈可通入所述激励信号，所述第一磁体与第二磁体相对的两端极性相同或相反。
  3. 根据权利要求1所述的移动终端，其中，
    所述发声面包括设置在所述本体两侧的第一发声面和第二发声面；
    所述移动终端包括多个所述激励装置，多个所述激励装置中的部分激励装置的电磁组件固定在所述第一发声面上，配置为激励所述第一发声面振动发声；其余激励装置的电磁组件固定在所述第二发声面上，配置为激励所述第二发声面振动发声。
  4. 根据权利要求3所述的移动终端，其中，
    所述移动终端还包括第一控制器、第一开关电路和第一检测模块、其中，
    所述第一检测模块配置为检测确定接听面，将确定的结果发送给所述第一控制器，所述接听面是所述第一发声面和第二发声面中当前用户用来接听的发声面；
    所述第一控制器配置为控制所述第一开关电路将根据声音信号生成的激励信号输出到所述接听面的激励装置。
  5. 根据权利要求4所述的移动终端，其中，
    所述第一控制器还配置为将所述激励信号输出到所述接听面的激励装置时，或者将所述激励信号输出到所述接听面的激励装置且设定条件满足时，执行以下处理：控制所述第一开关电路将抑制信号输出到非接听面的激励装置，以抑制所述非接听面振动发声，所述非接听面是所述第一发声面和第二发声面中除所述接听面外的另一发声面，所述抑制信号通过对所述激励信号进行处理得到，所述处理包括反向和弱化中的至少一种。
  6. 根据权利要求5所述的移动终端，还包括：
    附着在所述第一发声面上的第二检测模块，配置为检测所述第一发声面的振动信号或声音信号，将检测结果发送给所述第一控制器；
    附着在所述第二发声面上的第三检测模块，配置为检测所述第二发声面的振动信号或声音信号，将检测结果发送给所述第一控制器；
    所述第一控制器判定设定条件满足包括：根据附着在所述非接听面的检测模块的检测结果，如确定所述非接听面的振动信号或声音信号的大小超过相应的阈值，判定所述设定条件满足。
  7. 根据权利要求3所述的移动终端，其中，
    多个所述激励装置两两为一组，同组的两个激励装置背靠背设置，同组的两个激励装置共用一个第一磁体，或者同组的两个激励装置使用的两个第一磁体吸合在一起。
  8. 根据权利要求3所述的移动终端，其中，
    多个所述激励装置两两为一组，同组的两个激励装置背靠背设置，同组的两个激励装置使用的两个第一磁体之间设置有一个磁屏蔽层。
  9. 根据权利要求2至8中任一项所述的移动终端，其中，
    所述发声面包括多个区域，每一区域设置有所述激励装置。
  10. 根据权利要求9所述的移动终端，其中，
    所述移动终端还包括第二控制器、第二开关电路和第四检测模块，其中，
    所述第四检测模块配置为检测确定所述发声面的当前接听区域，将确定的结果发送给所述第二控制器；
    所述第二控制器配置为控制所述第二开关电路将根据声音信号生成的所述激励信号输出到所述当前接听区域的激励装置。
  11. 一种移动终端的发声控制方法，所述移动终端包括两个发声面，所述两个发声面均设置有激励装置，所述方法包括：
    通过检测确定接听面，所述接听面是所述两个发声面中当前用户用来接听的发声面；
    将激励信号输出到所述接听面的激励装置，以激励所述接听面振动发声。
  12. 根据权利要求11所述的发声控制方法，其中，
    将所述激励信号输出到所述接听面的激励装置时，或者将所述激励信号输出到所述接听面的激励装置且设定条件满足时，所述方法还包括：将抑制信号输出到非接听面的激励装置，以抑制所述非接听面振动发声，所述非接听面是所述第一发声面和第二发声面中除所述接听面外的另一发声面，所述抑制信号通过对所述激励信号进行处理得到，所述处理包括反向和弱化中的至少一种。
  13. 根据权利要求11所述的发声控制方法，其中，
    所述设定条件满足包括：如检测到所述非接听面的振动信号或声音信号的大小超过相应的阈值，判定所述设定条件满足。
  14. 根据权利要求11至13中任一项所述的发声控制方法，其中，
    所述移动终端为如权利要求3至8中任一项所述的移动终端。
  15. 一种移动终端的发声控制方法，所述移动终端的发声面的不同区域设置有不同的激励装置以实现分区域振动发声，所述方法包括：
    通过检测确定所述发声面的当前接听区域；
    将激励信号输出到所述当前接听区域的激励装置。
  16. 根据权利要求15所述的发声控制方法，其中，
    所述移动终端为如权利要求9或10所述的移动终端。
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