Display device control method and display device

Abstract

The invention discloses a display device control method and a display device, and the method comprises the steps: collecting a sound signal in a preset sound recognition region corresponding to the display device; generating a control instruction according to the sound signal; the display device is controlled to adjust the display content and / or the display effect according to the control instruction, the adjustment of the display content comprises switching of a peep-proof interface, and the adjustment of the display effect comprises switching of a display visual angle. Thus, the display function of the screen can be intelligently controlled through sound detection and recognition, the diversified requirements in different scenes are met, and the operation convenience and the equipment practicability are improved.

Description

Technical Field

[0001] The present application relates to the field of image display technology, and in particular to a display device control method and a display device using the display device control method. Background Art

[0002] With the widespread use of electronic devices, users have an increasing demand for privacy protection and ease of operation during device use. Existing screen display control technologies mainly rely on manual operations, such as adjusting the screen display function through manual control buttons or touch operations. However, this operation method is difficult to implement when the user's hands are busy or the device is far away, which is not convenient enough. In addition, the existing screen display control method lacks intelligence due to being limited to manual operation, and has limited application scenarios. It is unable to automatically and intelligently adjust the screen display function to adapt to the environment and user needs, which reduces the user experience and the practicality of the device.

[0003] Therefore, it is necessary to provide an improved technical solution to overcome the above technical problems existing in the prior art. Summary of the Invention

[0004] The purpose of this application is to provide a display device control method and a display device, which can intelligently control the display function of the screen through sound detection and recognition, meet the diverse needs in different scenarios, and improve the convenience of operation and the practicality of the equipment.

[0005] To achieve the above objectives: In a first aspect, an embodiment of the present application provides a method for controlling a display device, comprising the following steps: S1, collecting sound signals in a preset sound recognition area corresponding to the display device; S2, generating a control instruction according to the sound signal; S3, controlling the display device to adjust display content and / or display effect according to the control instruction, wherein adjusting the display content includes switching an anti-peeping interface, and adjusting the display effect includes switching a display viewing angle.

[0006] Optionally, the step S1 includes: collecting a voice signal in the sound recognition area; The step S2 comprises: recognizing the voice signal to determine whether the voice signal includes a voice command issued to the display device; If the voice signal includes a voice command issued to the display device, the control instruction is generated according to the voice command.

[0007] Optionally, the control instruction includes a trigger instruction and a task instruction issued successively; The trigger instruction is used to trigger the display device and control the display device to report its own status information; The task instruction is used to control the display device to adjust display content and / or display effect.

[0008] Optionally, the control instruction includes an encryption adjustment instruction, and the encryption adjustment instruction is used to notify the display device to switch the current display interface to an anti-peeping interface in a silent state, or to switch the current display viewing angle to a narrow viewing angle display mode.

[0009] Optionally, in step S1, collecting the sound signal in the sound recognition area further includes: Collecting environmental background sound signals and noise signals in the sound recognition area; The step S2 further includes: determining environmental conditions in the environment where the display device is located based on the environmental background sound signal and the noise signal; determining a display adjustment requirement of the display device according to the environmental conditions; The control instruction is generated according to the display adjustment requirement.

[0010] In a second aspect, an embodiment of the present application provides a display device, comprising a display module, a control module, a sound collection module, and an audio processing module; The audio processing module is in communication with the sound collection module, and the control module is in communication with the audio processing module and the display module; The sound collection module is used to collect sound signals in a preset sound recognition area corresponding to the display device; The audio processing module is used to generate a control instruction according to the sound signal; The control module is used to control the display module to adjust display content and / or display effect according to the control instruction.

[0011] Optionally, the display device further includes a timing control module, which is communicatively connected to the control module and the display module and is configured to generate a display driving signal according to the control instruction to adjust the display content and / or the display effect.

[0012] Optionally, the control instruction includes a trigger instruction, and the display device further includes an audio output module, which is communicatively connected to the audio processing module and is configured to report status information of the display device according to the trigger instruction.

[0013] Optionally, the control instruction further includes a task instruction and / or an encryption adjustment instruction, and the task instruction and / or the encryption adjustment instruction includes a viewing angle switching control instruction; the display device further includes a viewing angle driving module; The viewing angle driving module is in communication with the control module and is configured to generate a wide viewing angle driving signal or a narrow viewing angle driving signal according to the viewing angle switching control instruction.

[0014] Optionally, the sound collection module is further used to collect preset voice commands, and the audio processing module is further used to store the preset voice commands and recognize the voice commands in the sound signal.

[0015] The display device control method and display device provided in the embodiments of the present application collect sound signals in a preset sound recognition area corresponding to the display device; generate control instructions based on the sound signals; and control the display device to adjust the displayed content and / or display effects based on the control instructions. In this way, the display function of the screen can be intelligently controlled through sound detection and recognition, meeting the diverse needs of different scenarios and improving the convenience of operation and the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A flowchart of a display device control method provided in one embodiment of the present application.

[0018] Figure 2 This is a structural block diagram of a display device provided in one embodiment of the present application.

[0019] Figure 3 A schematic diagram of the structure of an audio processing module provided in one embodiment of the present application.

[0020] Figure 4 A schematic structural diagram of a display device provided in another embodiment of the present application.

[0021] Figure 5 A schematic structural diagram of a viewing angle driving module provided in one embodiment of the present application.

[0022] Figure 6 A timing diagram of a viewing angle driving signal provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0024] It should be noted that, in this document, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0025] It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are merely used to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the term "if" as used herein may be interpreted as "at the time of," "when," or "in response to a determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprising" and "including" indicate the presence of the described features, steps, operations, elements, components, items, types, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or" and "and / or" as used herein are to be interpreted as inclusive, meaning any one or any combination. Thus, “A, B, or C” or “A, B, and / or C” means “any of: A; B; C; A and B; A and C; B and C; A, B, and C.” An exception to this definition occurs only when a combination of elements, functions, steps, or operations are inherently mutually exclusive in some manner.

[0026] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are shown in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless clearly stated herein, the execution of these steps is not strictly limited in order, and they can be performed in other orders. Moreover, at least a portion of the steps in the figure may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0027] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0028] In the subsequent description, the use of suffixes such as "module", "component" or "unit" to represent elements is only for the purpose of facilitating the description of the present application and has no specific meaning. Therefore, "module", "component" or "unit" can be used interchangeably.

[0029] Figure 1 Schematic diagram of the flow of the display device control method provided in the embodiment of the present application. Figure 1 As shown, the display device control method provided in the embodiment of the present application includes the following steps: Step S1 : collecting a sound signal in a preset sound recognition area corresponding to the display device.

[0030] Specifically, the sound recognition area can be a three-dimensional space area within a preset radius with the display device as the center. This area can at least cover the common positions of users when they normally use the device to ensure that the sounds emitted by users within the normal operating distance can be effectively collected. In some specific embodiments, the sound recognition area can be a fixed area determined according to the design parameters of the display device, or the sound recognition area can be adjusted by the user according to the actual usage environment. For example, the user can adjust the sensitivity or direction of the sound collection module through the software setting interface to optimize the sound collection effect. The system can also automatically adjust the sound recognition area according to the ambient noise level and the user's position. For example, when the ambient noise is detected to be high, the system can expand the sound recognition area to ensure that the voice signal can be effectively collected.

[0031] In the embodiment of the present application, the sound signal includes a voice signal, an environmental background sound signal and a noise signal. Specifically, the voice signal mainly refers to the sound signal generated by the human voice, which usually contains specific voice content. The voice command of the user in the voice signal can be parsed and understood by the voice recognition algorithm. The environmental background sound signal mainly refers to the sound that exists naturally in a specific environment, which usually has a certain degree of continuity and stability, such as the sound of wind, rain, and birds in the natural environment, or the sound of air conditioners and fans in the indoor environment. The environment is monitored by extracting the characteristic parameters of the background sound (such as frequency, intensity, etc.). Noise signals mainly refer to those unexpected and interfering sounds, which are usually random and sudden, such as traffic noise, machine operation sound, crowd noise, etc. According to the collected environmental background sound signals and noise signals, the current environmental conditions can be evaluated.

[0032] Step S2: Generate a control instruction according to the sound signal.

[0033] Step S3: controlling the display device to adjust display content and / or display effect according to the control instruction.

[0034] In one embodiment, after a voice signal is collected in the sound recognition area, step S2 includes: identifying the voice signal to determine whether the voice signal includes a voice command issued to the display device; if the voice signal includes a voice command issued to the display device, generating a control instruction according to the voice command.

[0035] Specifically, since the voice signals collected in the voice recognition area may contain the voice signals of others, before recognizing the voice signals, preset voice commands issued by the user can be pre-collected and stored, and the preset voice commands issued by the user can be pre-processed. Feature parameters are extracted from the pre-processed voice commands and stored for subsequent recognition of the voice commands issued by the user. Pre-set voice commands can include commands for controlling the displayed content, such as displaying a map, switching the map perspective (such as 2D flat perspective or 3D stereo perspective), switching the anti-peeping interface (such as displaying the lock screen interface), etc. They can also include commands for adjusting the display effect, such as switching the display perspective (wide / narrow perspective), increasing / decreasing the backlight brightness, increasing / decreasing the contrast, etc. After the voice signal is collected in the voice recognition area, the voice signal is pre-processed by amplification, filtering, etc., and then the voice recognition algorithm and data analysis technology are used to extract feature parameters from the pre-processed voice signal and compare them with the pre-stored feature parameters to determine whether the currently collected voice signal contains the voice command issued by the user to the display device. After determining that the collected voice signal contains a voice command issued by the user, the voice command is parsed to generate a corresponding control instruction, such as parsing "enhance contrast" into a corresponding contrast adjustment instruction, and parsing "switch to narrow viewing angle" into a corresponding viewing angle switching instruction.

[0036] In one embodiment, the control instruction includes a trigger instruction and a task instruction issued successively, wherein the trigger instruction is used to trigger the display device and control the display device to report its own status information; the task instruction is used to control the display device to adjust the display content and / or display effect.

[0037] In a specific application scenario, when a user notices someone nearby and wants to switch the display mode to narrow viewing angle mode to prevent others from viewing private content on the screen, they can trigger the display device to activate the voice interaction function by using a predefined trigger command, such as "Brother Long, Brother Long." If the display device is operating normally, it will respond with a predefined response command, such as "I'm here. How can I help you?" At this point, the user can issue a voice command, such as "Switch to narrow viewing angle." After the sound acquisition module receives the voice command, the audio processing module recognizes it. If it is determined to be a user-initiated voice command, it interprets it as a corresponding viewing angle control command, converts it into an electrical signal, and sends it to the control module. Based on the received viewing angle control command, the control module controls the viewing angle drive module to output a narrow viewing angle drive signal, switching the display device's current viewing angle to narrow viewing angle mode. The control module then responds with a predefined response command, such as "Narrow viewing angle display mode has been enabled for you," via the audio output module. After the viewing angle is switched, the displayed content becomes dimmed and blurred when viewed from the side, preventing others from viewing the screen from the side. In this way, when the user is busy or unable to manually operate the display device, the user can quickly turn on the anti-peeping mode through voice commands to protect personal privacy.

[0038] In one embodiment, the control instruction may further include an encryption adjustment instruction, which is used to notify the display device to switch the current display interface to an anti-peeping interface in a silent state, or to switch the current display viewing angle to a narrow viewing angle display mode.

[0039] Specifically, in some public places such as business offices, when the user does not want to attract the attention of others or does not want others to perceive the user's operating intention through sound signals, the user can customize the encrypted adjustment instructions, that is, trigger the display device to adjust the display content or display effect in a silent state through a specific voice wake-up word or encrypted voice command. For example, a simple greeting can be set as an encrypted voice command, such as setting "Hello" or "You are here" as an encrypted voice command to turn on the anti-peeping mode. When the user says a greeting such as "Hello" or "You are here", the display device will automatically trigger the control instructions related to the anti-peeping mode, such as parsing the corresponding greeting into an instruction to display the anti-peeping interface or switch to a narrow viewing angle. In the silent state, the display device is controlled to switch the current display content to a preset anti-peeping interface, such as a lock screen interface, or switch the current viewing angle display mode to a narrow viewing angle display mode to protect the private content on the display screen. In this way, through the encrypted adjustment instructions in the form of voice, not only the convenience of display control operation can be improved, but also the concealment of the operation can be increased.

[0040] In one embodiment, after collecting the environmental background sound signal and the noise signal in the sound recognition area, step S2 also includes: determining the environmental conditions in the environment where the display device is located based on the environmental background sound signal and the noise signal; determining the display adjustment requirements of the display device based on the environmental conditions; and generating control instructions based on the display adjustment requirements.

[0041] Specifically, after the sound signal in the sound recognition area is collected by the sound collection module, the received sound signal is pre-processed by amplification, filtering, analog-to-digital conversion, etc., and then the sound recognition algorithm and data analysis technology are used to identify the environmental background sound signal and noise signal in the sound signal, and extract the characteristic parameters of the environmental background sound signal and noise signal, such as sound intensity, frequency, duration, etc., and determine the environmental conditions based on the extracted characteristic parameters. For example, when it is determined based on the extracted characteristic parameters that the user is currently in a noisy outdoor environment, a control instruction for enhancing brightness and contrast can be generated to increase the brightness and contrast of the screen display so that the user can view the screen content more clearly. In this way, by automatically identifying the environmental sound and noise, the display parameters of the display device are intelligently adjusted according to the sound characteristics, so that the display effect of the screen can adapt to changes in the environment, thereby improving the user experience and the practicality of the device and meeting the diverse needs in different scenarios.

[0042] Figure 2 This is a schematic diagram of the structure of a display device provided in one embodiment of the present application. Figure 3 This is a structural diagram of the audio processing module provided in one embodiment of the present application. Figure 2 As shown, an embodiment of the present application also provides a display device, including a sound acquisition module 210, an audio processing module 220, a control module 230 and a display module 240, wherein the audio processing module 220 is communicatively connected to the sound acquisition module 210, and the control module 230 is communicatively connected to the audio processing module 220 and the display module 240.

[0043] Among them, the sound collection module 210 is used to collect sound signals in a preset sound recognition area corresponding to the display device; the audio processing module 220 is used to generate control instructions based on the sound signals; and the control module 230 is used to control the display module 240 to adjust the display content and / or display effect according to the control instructions.

[0044] In a specific embodiment, the sound collection module 210 may include an array consisting of multiple microphones, which collects input sound signals through the microphone array and converts the sound mechanical vibrations into electrical signals that are transmitted to the audio processing module 220. In this way, the sensitivity of sound signal collection and the quality of sound signals can be improved.

[0045] The sound signals received by the audio processing module 220 include voice signals, ambient background sound signals, and noise signals. The audio processing module 220 processes the voice commands in the received voice signals and controls the general purpose input / output (GPIO) interface to generate control signals of corresponding waveforms according to different voice commands, so that the control module 230 can output corresponding display control instructions according to the corresponding control signals. Figure 3 As shown, the audio processing module 220 includes microphone interfaces MIC+ and MIC- connected to the sound collection module 210 for controlling the microphone module to collect sound signals. The audio processing module 220 also includes voice command recording interfaces UART_TX and UART_RX. When the sound collection module 210 collects a preset voice command, the preset voice command is stored in the audio processing module 220 through the voice command recording interfaces UART_TX and UART_RX for use in recognizing the voice command in the sound signal.

[0046] It is understandable that the display device in the embodiment of the present application further includes a power module 250 for supplying power to each functional module in the display device.

[0047] In one embodiment, the display device further includes a timing control module 260, which is communicatively connected to the control module 230 and the display module 240, and is used to generate a display drive signal of a corresponding waveform according to a control instruction to adjust the display content and / or display effect. For example, a backlight brightness drive signal after enhancement or reduction is generated according to a backlight brightness adjustment instruction, and a contrast drive signal after enhancement or reduction is generated according to a contrast adjustment instruction, and so on. It is understandable that the control module 230 and the timing control module 260 of the present application are not limited to functions such as adjusting the backlight brightness and contrast, and other display functions related to the display effect and / or display content can also be controlled by the timing control module 260, such as dynamic backlight control (DBC), overdrive (OD), content adaptive brightness control (CABC), etc.

[0048] In one embodiment, the control instruction includes a trigger instruction. The display device further includes an audio output module 270, which is communicatively coupled to the audio processing module 220 and configured to report the status information of the display device in response to the trigger instruction. In one specific embodiment, the audio output module 270 is coupled to the audio processing module 220 via speaker interfaces SPK+ and SPK-, and outputs a corresponding voice response instruction based on the voice trigger instruction and the display device status information collected by the sound collection module 210.

[0049] In one embodiment, the control instruction further includes a task instruction and / or an encrypted adjustment instruction, and the task instruction and / or the encrypted adjustment instruction includes a perspective switching control instruction. Figure 4 A schematic diagram of the structure of a display device provided in another embodiment of the present application is shown in FIG. Figure 4 As shown, the display device further includes a viewing angle driving module 280 , which is in communication with the control module 230 and is configured to generate a wide viewing angle driving signal or a narrow viewing angle driving signal according to a viewing angle switching control instruction.

[0050] Figure 5 This is a structural diagram of a viewing angle driving module provided in one embodiment of the present application. Figure 6 A timing diagram of a viewing angle driving signal provided in one embodiment of the present application. In a specific embodiment, the display device changes the transmittance of the display device through a dimming film (such as an EQ film) on the display panel, thereby achieving wide and narrow viewing angle switching. Specifically, the display panel is provided with a viewing angle control electrode, such as Figure 5 As shown, the viewing angle driving module 280 is connected to the control module 230 through control pins, such as the data output pin DAC_MISO, the data input pin DAC_MOSI, the clock signal pin DAC_CLK and the synchronization signal pin DAC_SYNC. Under the control of the control module 230, the viewing angle driving signal output pins DAC_EQ1 and DAC_EQ2 are used to apply the viewing angle control electrodes. Figure 6 The wide viewing angle driving signal WVA or the narrow viewing angle driving signal NVA is shown, thereby controlling the transmittance of the dimming film to achieve a wide viewing angle display mode and a narrow viewing angle display mode of the display device.

[0051] In summary, the display device control method and display device provided in the present application can control the display device to adjust the display content and / or display effect by detecting and identifying sound signals, thereby meeting diverse needs in different scenarios. For example, when the user's hands are busy or the user is far away from the device, or when the elderly or disabled people are not convenient to perform manual operation, the display device can be controlled to adjust the display effect of the display screen through voice commands, which is convenient, fast and simple to operate; when the user wants to protect the displayed private content without attracting the attention of others, the display device can be triggered to turn on the anti-peep mode in a silent state through encrypted voice commands, which can protect the user's privacy without exposing the user's operating intentions; it can also intelligently adjust the screen's display effect according to the environmental conditions by identifying environmental sounds and noises, so that the screen display always adapts to environmental changes, thereby improving the user's visual experience and the practicality of the device.

[0052] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0054] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A display device control method, characterized in that: The following steps are involved: S1, collecting sound signals in a preset sound recognition area corresponding to the display device; S2, generating a control instruction according to the sound signal; S3, controlling the display device to adjust display content and / or display effect according to the control instruction, wherein adjusting the display content includes switching an anti-peeping interface, and adjusting the display effect includes switching a display viewing angle.

2. The display device control method according to claim 1, wherein: The step S1 comprises: collecting a speech signal in the sound recognition area; The step S2 comprises: recognizing the voice signal to determine whether the voice signal includes a voice command issued to the display device; If the voice signal includes a voice command issued to the display device, the control instruction is generated according to the voice command.

3. The display device control method according to claim 2, wherein: The control instructions include trigger instructions and task instructions issued successively; The trigger instruction is used to trigger the display device and control the display device to report its own status information; The task instruction is used to control the display device to adjust display content and / or display effect.

4. The display device control method according to claim 2, wherein: The control instruction includes an encryption adjustment instruction, which is used to notify the display device to switch the current display interface to an anti-peeping interface in a silent state, or to switch the current display viewing angle to a narrow viewing angle display mode.

5. The display device control method according to claim 1, wherein: In step S1, collecting the sound signal in the sound recognition area further includes: Collecting environmental background sound signals and noise signals in the sound recognition area; The step S2 further includes: determining environmental conditions in the environment where the display device is located based on the environmental background sound signal and the noise signal; determining a display adjustment requirement of the display device according to the environmental conditions; The control instruction is generated according to the display adjustment requirement.

6. A display device, characterized in that: Used to implement the display device control method according to any one of claims 1 to 5, the display device includes a display module, a control module, a sound acquisition module and an audio processing module; the audio processing module is communicatively connected to the sound acquisition module, and the control module is communicatively connected to the audio processing module and the display module; The sound collection module is used to collect sound signals in a preset sound recognition area corresponding to the display device; The audio processing module is used to generate a control instruction according to the sound signal; The control module is used to control the display module to adjust display content and / or display effect according to the control instruction.

7. The display device according to claim 6, wherein The display device further includes a timing control module, which is in communication with the control module and the display module and is configured to generate a display driving signal according to the control instruction to adjust the display content and / or the display effect.

8. The display device according to claim 6 or 7, wherein: The control instruction includes a trigger instruction. The display device further includes an audio output module. The audio output module is communicatively connected to the audio processing module and is configured to report status information of the display device according to the trigger instruction.

9. The display device according to claim 8, wherein The control instructions further include task instructions and / or encryption adjustment instructions, and the task instructions and / or encryption adjustment instructions include viewing angle switching control instructions; the display device further includes a viewing angle driving module; The viewing angle driving module is in communication with the control module and is configured to generate a wide viewing angle driving signal or a narrow viewing angle driving signal according to the viewing angle switching control instruction.

10. The display device according to claim 6, wherein The sound collection module is further used to collect preset voice commands, and the audio processing module is further used to store the preset voice commands and recognize the voice commands in the sound signal.

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