Actuator control method, device, system, mobile terminal and storage medium

Abstract

The embodiment of the present invention provides an exciter control method, device, system, mobile terminal and storage medium. The method includes: selecting at least two exciters located on a sound panel; determining the performance characteristics of the at least two exciters based on the control parameters of each of the selected exciters; adjusting the control parameters of each exciter so that the performance characteristics meet the preset conditions.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of acoustic technology, and specifically to an actuator control method, device, system, mobile terminal and storage medium. Background Art

[0002] In recent years, full-screen displays have been widely used in electronic consumer products such as mobile phones and tablets. In order to maximize the "screen-to-body ratio" and avoid adding additional sound holes on the sound panel, terminal manufacturers usually use screen sound technology, placing the exciter behind the screen, driving the exciter to generate vibrations that are transmitted to the screen, so that the screen can make sounds through vibrations.

[0003] Since the sound panel does not have a traditional earpiece sound outlet, the answering position is not fixed every time you answer a call through the sound panel of an electronic device. Therefore, when the screen is driven by the exciter to vibrate and make sound, the sound may be unfocused and the answering loudness may be insufficient in different situations. Summary of the invention

[0004] The embodiments of the present invention provide an exciter control method, device, system, mobile terminal and storage medium, which can improve the sound quality of an audio signal output by a sound-emitting panel.

[0005] In a first aspect, an embodiment of the present invention provides an exciter control method, comprising: selecting at least two exciters located on a sound-emitting panel; determining performance characteristics of the at least two exciters based on control parameters of each of the selected exciters; and adjusting the control parameters of each exciter so that the performance characteristics meet preset conditions.

[0006] In a second aspect, an embodiment of the present invention provides an exciter control device, comprising: an exciter selection module, configured to select at least two exciters located on a sound-emitting panel; a performance characteristic determination module, configured to determine the performance characteristics of at least two exciters based on the control parameters of each exciter in the selected exciters; and a parameter adjustment module, configured to adjust the control parameters of each exciter so that the performance characteristics meet preset conditions.

[0007] In a third aspect, an embodiment of the present invention provides a mobile terminal, comprising a sound panel, a plurality of exciters located on the sound panel, and a processor, wherein the processor is configured to select at least two exciters from the plurality of exciters, determine performance characteristics of the at least two exciters based on control parameters of each of the selected exciters, and adjust the control parameters of each exciter so that the performance characteristics meet preset conditions.

[0008] In a fourth aspect, an embodiment of the present invention provides an actuator control system, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the processor implements the actuator control method described in the first aspect when executing the computer program.

[0009] In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, in which instructions are stored. When the instructions are executed on a computer, the computer executes the actuator control method described in the first aspect above.

[0010] According to the exciter control method, device, system, mobile terminal and storage medium of the embodiments of the present invention, at least two exciters are selected from the sound panel, and the control parameters of each selected exciter are adjusted so that the performance characteristics of the selected exciter meet preset conditions, so that a high-quality audio signal can be obtained using the selected exciter. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic flow chart showing a method for controlling an actuator according to an embodiment of the present invention is shown.

[0012] Figure 2 A schematic diagram showing the positional relationship between a listening object and a sound emitting panel in an embodiment of the present invention is shown.

[0013] Figure 3 A schematic diagram showing a comparison of performance characteristics of multiple exciters in an exemplary embodiment of the present invention.

[0014] Figure 4 A schematic flow chart showing a method for controlling an actuator according to another embodiment of the present invention is shown.

[0015] Figure 5 A schematic structural diagram of an actuator control device according to an embodiment of the present invention is shown.

[0016] Figure 6 A schematic structural diagram of an electronic device according to an exemplary embodiment of the present invention is shown.

[0017] Figure 7 A schematic diagram showing the system architecture of an electronic device according to an exemplary embodiment of the present invention.

[0018] Figure 8 A structural diagram showing the hardware architecture of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0020] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "includes..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0021] In the embodiment of the present invention, the exciter can be used to restore the harmonic components of the audio signal lost during the transmission or recording process, thereby expanding the high-frequency bandwidth of the audio signal and improving the signal-to-noise ratio. The audio signal is processed by the exciter to increase the loudness and clarity of the sound and improve the sound quality.

[0022] Exemplarily, the control parameters of the exciter may include, but are not limited to, the following parameters: noise reduction threshold, tuning point, harmonic amount, peaking, zero value compensation, timbre, and mixing ratio. In different application scenarios, such as answering a call, playing music, etc., different control parameters are set and used according to the characteristics of each exciter in the multiple exciters to process the audio signal.

[0023] Depending on the application scenario, multiple exciters can divide the audio signal in the audible frequency range of the human ear, such as 20Hz to 20kHz, into mid-high frequency bands and low frequency bands according to their own characteristics. Among them, the exciter with low-frequency characteristics can process the low frequency in the human voice, improve the low-frequency response under multiple exciters, and enhance the full-screen sound effect under the exciter by superimposing the performance of multiple exciters.

[0024] In order to better understand the present invention, the exciter control method, device, system, mobile terminal and storage medium according to the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that these embodiments are not intended to limit the scope of the present invention.

[0025] Figure 1 FIG. 2 is a flow chart showing a method for controlling an actuator according to an embodiment of the present invention. Figure 1 As shown, in one embodiment, the actuator control method may include the following steps S110 to S130.

[0026] Step S110, selecting at least two exciters located on the sound-emitting panel.

[0027] In this step, in order to reduce power consumption, when the exciters located on the sound-emitting panel are selected for the first time, the number of the selected exciters may be equal to 2.

[0028] Step S120 : determining performance characteristics of the at least two actuators based on the control parameters of each of the selected actuators.

[0029] Step S130, adjusting the control parameters of each actuator so that the performance characteristics meet the preset conditions.

[0030] According to the exciter control method of the embodiment of the present invention, at least two exciters can be selected from a plurality of exciters located on the sound-emitting panel, and the control parameters of each of the selected exciters can be adjusted so that the performance characteristics of the at least two exciters meet the preset conditions. Furthermore, when the performance characteristics of the at least two exciters meet the preset conditions, the acoustic index of the processed audio signal meets the preset psychoacoustic index of the audio receiver.

[0031] Figure 2 Schematic diagram showing the positional relationship between the listening object and the sound emitting panel in an embodiment of the present invention. Figure 2 As shown, in one embodiment, the listening object 22 of the audio signal may be an object that receives the audio signal, such as an ear of a user of the electronic device 20, a listening device, etc. The electronic device 20 may be a mobile terminal, such as a mobile phone, a tablet computer, and a personal digital assistant (PDA).

[0032] Due to the randomness of the positional relationship between the listening object 22 and the sound panel 21 in the actual scene, when it is determined that the sound panel 21 needs to be used to play the audio signal, a ranging sensor on the plane where the sound panel 21 is located, such as an ultrasonic sensor or a light sensor, can be used to detect the distance between the listening object 22 and the sound panel 21.

[0033] It should be noted that the number and arrangement of sensors on the plane where the sound panel is located can be set according to actual needs, and the embodiment of the present invention does not make specific limitations.

[0034] In one embodiment, the distance measuring sensor on the plane where the sound panel is located includes a transmitter and a receiver. The transmitter is used to transmit beams (ultrasound waves or light waves) in multiple directions, and the beams reaching the surface of the listening object form sampling points on the surface of the listening object; the beams reaching the surface of the listening object are reflected by the surface of the listening object, and the beams received by the receiver after reflection are used as the incident beams of the sound panel.

[0035] In one embodiment, the ranging sensor can record the beam transmission time from the transmitted beam to the received incident beam, and use the distance calculated based on the beam transmission time and the beam propagation speed as the distance from the sound-emitting panel to the sampling point on the surface of the listening object. The ranging sensor can calculate the distance from the sound-emitting panel to different sampling points on the surface of the listening object.

[0036] In another embodiment, the incident angle of the incident beam on the sound-emitting panel can be measured by a beam analyzer located on the electronic device or the sound-emitting panel. The incident angle of the beam is the angle between the beam and the normal line of the interface with the sound-emitting panel when the beam is incident on the interface. Figure 2 As shown, according to the incident angle of the incident beam on the sound panel, the angle θ between the incident beam and the plane where the sound panel is located can be determined. In the embodiment of the present invention, the angle θ can be used as the angle between the listening object and the sound panel.

[0037] From the above description, it can be seen that if it is detected that the angle between the listening object and the sound panel meets the preset angle restriction condition, the distance from the sound panel corresponding to the incident beam forming the angle to the sampling point on the surface of the listening object can be used as the shortest distance between the listening object and the sound panel; the incident point of the incident beam forming the angle on the sound panel, or the vertical point on the sound panel of the sampling point on the surface of the listening object corresponding to the shortest distance, can be used as the reference position point on the sound panel.

[0038] In one embodiment, the preset angle restriction condition includes: the angle between the listening object and the sound emitting panel is equal to a preset angle threshold. As an example, the preset angle threshold may be 90° or the angle difference from 90° is less than or equal to the preset angle difference threshold. In this embodiment, the closer the preset angle threshold is to 90°, the more accurate the shortest distance to the sound emitting panel is.

[0039] In one embodiment, the tilt angle of the electronic device where the sound panel is located can be determined through the sensing result of the angle measurement module, and the angle measurement module can be located in the electronic device to which the sound panel belongs. As an example, the angle measurement module can include a gravity sensor, and the gravity sensor can sense the angle between an axis direction of the electronic device and a horizontal plane.

[0040] As an example, the angle measurement module may include at least one of sensors such as a gravity sensor, a linear accelerometer, a gyroscope, and a tilt sensor, so as to improve the accuracy and diversity of the sensed tilt angle of the electronic device.

[0041] In this embodiment, the sensed tilt angle of the electronic device may be used as the tilt angle of the sound emitting panel on the electronic device.

[0042] In one embodiment, when the distance between the listening object and the sound emitting panel is within a preset distance threshold range, and the tilt angle of the sound emitting panel is within a preset angle threshold range, a designated reference position point can be determined from the sound emitting panel.

[0043] In one embodiment, when the sound panel is controlled to emit sound by an exciter, a specified reference position point can be obtained from the sound panel only based on the distance between the listening object and the sound panel. In another embodiment, if there is no listening object or when the ranging sensor cannot detect the distance between the listening object and the sound panel, the specified reference position point can be obtained from the sound panel only based on the sensed tilt angle of the electronic device or the sound panel.

[0044] In the embodiment of the present invention, the correspondence between the distance between the listening object and the sound emitting panel and / or the tilt angle of the sound emitting panel and the reference position point on the sound emitting panel can be preset. Thus, the reference position point on the sound emitting panel is determined according to at least one of the detected distance between the listening object and the sound emitting panel and the sensed tilt angle of the sound emitting panel by using the correspondence.

[0045] It can be seen from the description of the above embodiments that, in one embodiment, in step S110, the step of selecting at least two exciters located on the sound-emitting panel may specifically include: steps S111 and S112.

[0046] Step S111, when the trigger condition is met, determine the reference position point on the sound panel according to the detected distance between the listening object and the sound panel, and / or the detected inclination angle of the sound panel; Step S112, select at least two exciters that are closest to the reference position point.

[0047] In one embodiment, the trigger condition may include detecting that the electronic device is required to play audio or answer a call.

[0048] According to the exciter control method of the embodiment of the present invention, at least two exciters located on the sound panel closest to the reference point are selected, and the control parameters of each exciter are adjusted so that the performance characteristics of the at least two selected exciters meet preset conditions, thereby improving and compensating for the performance limitations and shortcomings of a single exciter.

[0049] In the embodiment of the present invention, the best listening position of the sound panel can be determined according to the size and dimensions of the sound panel. The acoustic index of the audio signal received at the best listening position is better than the acoustic index of the audio signal received at other listening positions of the sound panel (hereinafter referred to as the optimal acoustic index). The embodiment of the present invention can pre-set the standard performance characteristics of at least two selected exciters based on the optimal acoustic index.

[0050] As an example, when the sensor detects that the spatial angle formed by the incident beam and the sound panel is a specified angle value, and the distance between the listening object and a specified top of the electronic device where the sound panel is located is a specified distance value, the spatial position of the listening object is the best listening position for the sound of the sound panel under the action of the exciter, and is also the best audio receiving position that conforms to the optimal acoustic indicators or ideal acoustic indicators of psychoacoustics.

[0051] In one embodiment, the performance characteristics in step S130 satisfy a preset condition, which may specifically include: the characteristic similarity between the preset standard performance characteristics of the performance characteristics of the selected at least two actuators is less than or equal to a preset similarity threshold.

[0052] Figure 3 A schematic diagram showing a comparison of performance characteristics of a multi-actuator in an exemplary embodiment of the present invention; Figure 3 In the figure, the X-axis represents the frequency band and the Y-axis represents the loudness of the audio signal when voltage is used as the measurement object.

[0053] like Figure 3 As shown in the "Frequency Response Curve of Low-Frequency Sounding Unit Before Filtering" in Figure 1, within the frequency range of 100Hz to 10kHz, the loudness of the unprocessed audio signal is between 60dbv and nearly 102dbv; Figure 3 As shown in the "Frequency response curve of the low-frequency sound unit after filtering", after being processed by a multi-exciter including a low-frequency characteristic exciter, an audio signal with a loudness between 80dbv and nearly 102dbv is obtained.

[0054] According to the "frequency response curve of the mid-high frequency sound unit before filtering", within the frequency range of 1kHz to 10kHz, the loudness of the unprocessed audio signal is between 60dbv and close to 105dbv; according to the "frequency response curve of the mid-high frequency sound unit after filtering", after being processed by a multi-exciter that includes mid-high frequency characteristics, an audio signal with a loudness between close to 97dbv and close to 105dbv is obtained.

[0055] pass Figure 3 It can be seen that after the multiple exciters process the audio signal according to their own characteristics, a wide and flat audio signal can be output through the sound unit, the loudness of the audio signal can be increased, and the human voice signal or music signal in the audio signal can be restored with high fidelity. Exemplarily, the sound unit can be a sound panel such as a full screen in an embodiment of the present invention, or a housing or speaker of an electronic device.

[0056] In one embodiment, in step S130, the step of adjusting the control parameter of each actuator may specifically include: selecting one from preset control parameter values ​​of each actuator.

[0057] In an embodiment of the present invention, when adjusting the control parameter value of each selected exciter, the control parameter of each exciter can be adjusted in a targeted manner according to the preset control parameter value of each exciter, thereby avoiding blind adjustment of parameters and improving parameter adjustment efficiency.

[0058] In one embodiment, the actuator control method may further include the following step S140.

[0059] In step S140, if the performance characteristics do not meet the preset standard performance conditions and the number of corrections meets the preset number limit conditions, other exciters are selected, and the performance characteristics are determined based on the control parameters of each exciter in the exciters selected this time and before; wherein other exciters are exciters other than the exciter selected last time.

[0060] In this step, the other exciters may also be exciters other than the exciters selected last time that are closest to the reference position point on the sound emitting panel.

[0061] In this embodiment, if the performance characteristics of the selected exciter do not meet the preset standard performance conditions after adjusting the control parameters of each exciter, an exciter that is closest to the reference point on the sound emission panel can be additionally selected based on the selected exciter, and the control parameters of each exciter are adjusted for the selected exciter and the additionally selected exciter so that the performance characteristics of the selected exciter meet the preset conditions, so that the listening position can receive high-quality audio signals.

[0062] In one embodiment, when the number of the sound emitting panels is greater than 1, before the step of selecting at least two actuators located on the sound emitting panels in step S110, the method may further include: determining the sound emitting panel to be used according to the biometric recognition result.

[0063] In this embodiment, the electronic device has multiple sound panels, such as a dual full screen of a mobile terminal. When the user needs to use the electronic device to make or receive a call, the user can first perform biometric identification through the biometric identification device on the electronic device, and determine the sound panel to be used among the multiple sound panels of the electronic device through the biometric identification result, and then determine the reference position point on the sound panel to be used based on the detected inclination angle of the sound panel and / or the detected distance between the listening object and the sound panel, select at least two exciters of the sound panel to be used that are closest to the reference position point, and adjust the control parameters of each exciter so that the performance characteristics of the selected exciter meet the preset conditions.

[0064] According to the exciter control method of an embodiment of the present invention, at least two exciters can be selected from the sound panel, and the control parameters of each selected exciter can be adjusted so that the performance characteristics of the selected exciter meet preset conditions. The adjusted exciter has a better low-frequency compensation or high-frequency compensation effect on the audio signal, thereby obtaining a high-quality audio signal.

[0065] In one embodiment, the exciter control method may further include: controlling the sound panel to sound using the adjusted control parameters of each exciter. In this embodiment, controlling the sound panel to sound using the adjusted control parameters of each exciter may improve the audio quality of the sound panel under the exciter when playing audio.

[0066] Figure 4 FIG. 2 is a flow chart showing a method for controlling an actuator according to another embodiment of the present invention. Figure 4 As shown, in one embodiment, the actuator control method may include the following steps.

[0067] Step S210: detecting that the user answers the call.

[0068] Step S220, trigger the distance measuring sensor to detect the distance between the listening object and the sound panel, and trigger the gravity sensor to detect the inclination angle of the sound panel, and determine the reference position point on the sound panel according to at least one of the distance and the inclination angle, and select at least two exciters on the sound panel that are closest to the reference position point.

[0069] Step S230: calling the control parameters of each actuator.

[0070] In this step, when the at least two selected actuators are actuator A and actuator B, a control parameter value is selected from the preset control parameter values ​​A0 to An of actuator A, and a control parameter value is selected from the preset control parameter values ​​B0 to Bm of actuator B. Wherein n and m are integers greater than or equal to 1.

[0071] Step S240, determining the characteristic similarity between the performance characteristic of the selected actuator and the preset standard performance characteristic.

[0072] In this step, when the at least two selected exciters are exciter A and exciter B, the frequency response similarity between a superimposed frequency response feature obtained by superimposing the frequency response features of the two exciters and a preset standard frequency response feature is determined.

[0073] As an example, a frequency response curve can be used to reflect the frequency response characteristics of the actuator. The preset standard frequency response curve can reflect the frequency response characteristics of the actuator that meets the optimal acoustic index or the ideal acoustic index. Specifically, the standard frequency response curve can be the optimal frequency response curve that can be achieved after superimposing the performance characteristics of the actuator on the sound panel. The standard frequency response curve of the embodiment of the present invention can also be called a reference frequency response curve.

[0074] like Figure 4 As shown, the standard performance characteristics preset in step S240 can determine the optimal acoustic indicators of the sound panel according to the size of the sound panel, such as a full screen, and determine the standard performance characteristics of the exciter on the sound panel corresponding to the optimal acoustic indicators.

[0075] Step S250, determining whether the feature similarity is greater than a preset similarity threshold.

[0076] In this step, the preset similarity threshold can be set according to actual needs. As an example, the preset similarity threshold can be 90%.

[0077] In step S250, if the feature similarity is greater than the preset similarity threshold, step S260 is executed; if the feature similarity is less than or equal to the preset similarity threshold, the above step S230 is executed.

[0078] Step S260, calling the control parameter value of each exciter selected when the frequency response similarity is greater than the preset similarity threshold, and controlling the sound panel to produce sound through the selected exciter.

[0079] Step S270: The user speaks through the voice panel and receives the voice message.

[0080] According to the exciter control method of the embodiment of the present invention, at least two exciters can be selected from the sound panel according to the position and angle relationship between the listening object and the sound panel, and the control parameters of each selected exciter can be adjusted so that the performance characteristics of the selected exciter meet preset conditions, thereby obtaining a high-quality audio signal.

[0081] Figure 5 FIG. 2 is a schematic diagram showing the structure of an actuator control device according to an embodiment of the present invention. Figure 5 As shown, the actuator control device of the embodiment of the present invention may include the following modules.

[0082] The exciter selection module 310 is configured to select at least two exciters located on the sound panel; the performance characteristic determination module 320 is configured to determine the performance characteristics of the at least two exciters based on the control parameters of each exciter in the selected exciters; the parameter adjustment module 330 is configured to adjust the control parameters of each exciter so that the performance characteristics meet the preset conditions.

[0083] In one embodiment, the actuator control device may further include: a sound control module, which is used to control the sound of the sound panel using the adjusted control parameters of each actuator.

[0084] In one embodiment, the exciter selection module 310 may specifically include a reference position determination unit and an exciter selection unit. The reference position determination unit is configured to determine a reference position point on the sound emission panel according to the detected distance between the listening object and the sound emission panel and / or the detected tilt angle of the sound emission panel when the trigger condition is met; the exciter selection module is further configured to select at least two exciters that are closest to the reference position point.

[0085] In one embodiment, the performance feature satisfies a preset condition, including: the feature similarity between the performance feature and a preset standard performance feature is less than or equal to a preset similarity threshold. In this embodiment, the performance feature may be a performance feature obtained by superimposing performance features of different actuators in the selected actuator.

[0086] In one embodiment, when the parameter adjustment module 330 is configured to adjust the control parameter of each actuator, it is specifically configured to: select one from the preset control parameter values ​​of each actuator.

[0087] In one embodiment, the exciter selection module 310 is further configured to select other exciters if the performance characteristics do not meet the preset standard performance conditions and the number of adjustments meets the preset number limit conditions, and determine the performance characteristics based on the control parameters of each exciter in the exciters selected this time and before; wherein the other exciters are exciters other than the exciter selected last time.

[0088] In this embodiment, the other actuators may also be actuators that are closest to the reference position point except the actuator selected last time.

[0089] In one embodiment, the actuator control device may include a sound panel determination module. The screen determination module may be configured to determine the sound panel to be used according to the biometric recognition result before selecting at least two actuators located on the sound panel when the number of sound panels is greater than 1.

[0090] According to the exciter control device of the embodiment of the present invention, at least two exciters on the sound panel are selected, and the control parameters of each selected exciter are adjusted so that the performance characteristics of the at least two exciters after adjustment meet preset conditions, thereby improving the audio quality played by the sound panel under multiple exciters.

[0091] It should be clear that the present invention is not limited to the specific configurations and processes described in the above embodiments and shown in the figures. For the convenience and brevity of description, a detailed description of the known methods is omitted here, and the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, which will not be repeated here.

[0092] The sound generating system in the embodiment of the present invention can be applied to electronic equipment. Figure 6 A schematic diagram of the structure of an electronic device according to an exemplary embodiment of the present invention is shown. The embodiment of the present invention does not specifically limit the arrangement positions of multiple exciters on the sound panel. Therefore, in order to simplify the description, the following embodiment of this article takes two exciters as an example to illustrate the system structure of the electronic device, but this description should not be interpreted as limiting the scope or implementation possibility of the embodiment of the present invention.

[0093] Figure 6 The electronic device in the embodiment may include a sound device A and a sound device B. The sound device A and the sound device B may each include a closed sound cavity. The closed sound cavity in the sound device A may be a sound cavity formed by the exciter 1 and the sound panel 11, the shell 12 and the middle frame 13; the closed sound cavity in the sound device B may be a sound cavity formed by the exciter 2, the sound panel 11, the shell 12 and the middle frame 13.

[0094] In the embodiment of the present invention, the electronic device can produce sound under the control of multiple exciters and multiple sound-producing devices formed by the sound-producing panels 11 , the housing 12 , and the middle frame 13 .

[0095] Figure 7 A schematic diagram showing the system architecture of an electronic device according to an exemplary embodiment of the present invention. Figure 7 and Figure 6 The same or equivalent modules are given the same reference numerals.

[0096] like Figure 7 As shown, in one embodiment, the electronic device may include: a processor 10, an audio analysis module 23, a plurality of audio drivers such as audio driver 1, audio driver 2, ..., audio driver n, a plurality of exciters such as exciter 1, exciter 2, ..., exciter n, and a sound panel 11. Wherein, n is an integer greater than 1, and, in the description of the embodiment of the present invention, a plurality means a quantity greater than 1.

[0097] like Figure 7As shown, the audio analysis module 23 may include multiple audio interfaces, such as audio interface 1, audio interface 2, audio interface 3, ..., audio interface n. Each audio interface may be connected to one of the multiple audio drivers; each of the multiple audio drivers may be connected to one of the multiple exciters, and each audio driver may be used to drive the connected exciter to work normally; and the multiple exciters may be connected to the sound panel 11 in parallel.

[0098] In one embodiment, the audio analysis module 23 can analyze and obtain the performance characteristics of the multiple exciters according to the control parameters of each exciter in the multiple exciters provided by the processor 10. As an example, the performance characteristics include but are not limited to the frequency response characteristics, sensitivity, harmonic distortion, effective frequency range, signal-to-noise ratio and other characteristics of the audio signal.

[0099] In one embodiment, the audio interface can be used for data transmission between audio devices. As an example, the audio interface can be an Inter-IC Sound (I2S) interface or other audio data transmission interface, which is not specifically limited in the embodiments of the present invention.

[0100] It should be understood that the audio analysis module 23 can be implemented as an audio analyzer, or can be implemented as a computer program that can be executed by the processor 10. When the computer program is executed by the processor 10, the performance characteristics of the multiple exciters can be analyzed according to the control parameters of each exciter in the multiple exciters. The embodiment of the present invention does not specifically limit the specific implementation form of the audio analysis module.

[0101] Figure 8 The structure diagram of the hardware architecture of the electronic device according to the embodiment of the present invention is shown. Figure 8 As shown, the computing device 400 includes an input device 401, an input interface 402, a central processing unit 403, a memory 404, an output interface 405, and an output device 406. The input interface 402, the central processing unit 403, the memory 404, and the output interface 405 are connected to each other via a bus 410, and the input device 401 and the output device 406 are connected to the bus 310 via the input interface 402 and the output interface 405, respectively, and then connected to other components of the computing device 400.

[0102] Specifically, the input device 401 receives input information from the outside (for example, a sensor) and transmits the input information to the central processing unit 403 through the input interface 402; the central processing unit 403 processes the input information based on the computer executable instructions stored in the memory 404 to generate output information, temporarily or permanently stores the output information in the memory 404, and then transmits the output information to the output device 406 through the output interface 405; the output device 406 outputs the output information to the outside of the computing device 400 for user use.

[0103] In one embodiment, Figure 8 The computing device 400 shown may be implemented as an actuator control system, which may include: a memory configured to store a program; and a processor configured to run the program stored in the memory to execute the actuator control method in the above embodiment.

[0104] The electronic device of an embodiment of the present invention can be implemented as a mobile terminal, which may include a sound-emitting panel, multiple exciters located on the sound-emitting panel, and a processor, wherein the processor is configured to select at least two exciters from the multiple exciters, determine performance characteristics of the at least two exciters based on the control parameters of each exciter in the selected exciters, and adjust the control parameters of each exciter so that the performance characteristics meet preset conditions.

[0105] In one embodiment, the mobile terminal may also include: a ranging sensor configured to detect the distance between a listening object and the sound emitting panel; an angle measurement module for detecting the tilt angle of the sound emitting panel; and a processor configured to determine a reference position point on the sound emitting panel based on the detected distance between the listening object and the sound emitting panel and / or the detected tilt angle of the sound emitting panel when a trigger condition is met, and select at least two exciters that are closest to the reference position point.

[0106] In one embodiment, the mobile terminal may further include a biometric identification device. The biometric identification device is configured to perform biometric identification processing on the listening object under the control of the processor; the processor is further configured to determine the used sound panel among the multiple sound panels according to the biometric identification result.

[0107] According to the embodiment of the present invention, the specific working process of the processor in the mobile terminal can refer to the processing process corresponding to the exciter control method described in the aforementioned method embodiment, which will not be repeated here.

[0108] According to an embodiment of the present invention, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present invention includes a computer program product, which includes a computer program tangibly contained on a machine-readable medium, and the computer program includes program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network, and / or installed from a removable storage medium.

[0109] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0110] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

[0111] Example embodiments have been disclosed herein, and although specific terms are employed, they are used and should be interpreted only in a general illustrative sense and not for limiting purposes. In some instances, it will be apparent to those skilled in the art that, unless otherwise expressly stated, features, characteristics, and / or elements described in conjunction with a particular embodiment may be used alone or in combination with features, characteristics, and / or elements described in conjunction with other embodiments. Therefore, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the scope of the invention as set forth in the appended claims.

Claims

1. A method for controlling an actuator, comprising: selecting at least two exciters located on the sound-generating panel; determining performance characteristics of the at least two actuators based on a control parameter of each of the selected actuators; Adjusting the control parameters of each actuator so that the performance characteristics meet the preset conditions; If the performance characteristic does not meet the preset standard performance condition, and the number of adjustments meets the preset number limit condition, another actuator is selected, and the performance characteristic is determined based on the control parameters of each actuator in the actuator selected this time and before this time; The other exciters are exciters other than the exciter selected last time.

2. The actuator control method according to claim 1, wherein: The selecting at least two exciters located on the sound emitting panel comprises: When the trigger condition is met, determining a reference position point on the sound emitting panel according to the detected distance between the listening object and the sound emitting panel, and / or the detected inclination angle of the sound emitting panel; At least two actuators that are closest to the reference position point are selected.

3. The actuator control method according to claim 1, wherein: The performance characteristics meet the preset conditions, including: The feature similarity between the performance feature and the preset standard performance feature is less than or equal to a preset similarity threshold.

4. The actuator control method according to claim 1, wherein: The adjusting the control parameter of each exciter includes: selecting one from preset control parameter values ​​of each exciter.

5. The actuator control method according to any one of claims 1 to 4, wherein: The number of the sound-emitting panels is greater than 1, and the selecting is located before at least two exciters on the sound-emitting panels, and further includes: The voice panel to be used is determined based on the biometric results.

6. The actuator control method according to claim 1, further comprising: The at least two exciters are used to control the sound panel to produce sound according to the adjusted control parameters of each exciter.

7. An actuator control device, comprising: an exciter selection module configured to select at least two exciters located on the sound-generating panel; a performance characteristic determination module configured to determine the performance characteristics of the at least two actuators based on the control parameters of each of the selected actuators; A parameter adjustment module, configured to adjust the control parameters of each actuator so that the performance characteristics meet the preset conditions; The exciter selection module is further configured to select other exciters if the performance characteristics do not meet the preset standard performance conditions and the number of adjustments meets the preset number limit conditions, and determine the performance characteristics based on the control parameters of each exciter in the exciters selected this time and before; wherein the other exciters are exciters other than the exciter selected last time.

8. The actuator control device according to claim 7, further comprising: The sound panel determination module is configured to determine the sound panel to be used according to the biometric recognition result.

9. A mobile terminal, comprising a sound panel, a plurality of actuators and a processor located on the sound panel, wherein: The processor is configured to select at least two actuators from the plurality of actuators, determine performance characteristics of the at least two actuators based on a control parameter of each of the selected actuators, and adjust the control parameter of each actuator so that the performance characteristics meet a preset condition; If the performance characteristics do not meet the preset standard performance conditions and the number of adjustments meets the preset number limit conditions, other exciters are selected, and the performance characteristics are determined based on the control parameters of each exciter in the exciters selected this time and before; wherein the other exciters are exciters other than the exciter selected last time.

10. An actuator control system, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the actuator control method according to any one of claims 1 to 6 are implemented.

11. A computer-readable storage medium, wherein: The computer-readable storage medium stores instructions, and when the instructions are executed on a computer, the computer executes the actuator control method according to any one of claims 1 to 6.

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