Classroom sound amplification system and smart classroom

Abstract

The utility model belongs to the teaching technology, and provides a classroom sound amplification system and a smart classroom, the classroom sound amplification system comprises a display device, an image acquisition device and a plurality of sound acquisition devices; the image acquisition device and the display device are arranged at the position of a podium of the classroom, and the sound acquisition device is arranged on the roof of the classroom; the image acquisition device is used for acquiring classroom images; the display device is used for determining a target sound acquisition device for acquiring the sound of the teacher from the plurality of sound acquisition devices according to the classroom image acquired by the image acquisition device, and controlling the target sound acquisition device to perform sound acquisition; and the display device is also used for playing the sound of the teacher acquired by the target sound acquisition device. Through the sound amplification system, the teaching quality of teachers can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of teaching technology, and more specifically, to a classroom sound amplification system and a smart classroom. Background Art

[0002] When teachers are giving lectures, they usually use wireless lavalier microphones or infrared microphones to amplify the lectures so that students in the classroom can hear the lectures clearly.

[0003] On the one hand, wireless collar microphones or infrared microphones and other sound amplification devices need to be worn by teachers, which are easy to be lost. On the other hand, in a classroom equipped with an educational large screen, when the teacher passes by the educational large screen, the sound amplification device or educational large screen worn by the teacher is prone to howling, seriously affecting the quality of the teacher's lecture. Utility Model Content

[0004] The embodiments of the present invention provide a classroom sound amplification system and a smart classroom to improve the quality of lectures.

[0005] In a first aspect, an embodiment of the utility model provides a classroom sound reinforcement system, characterized in that the classroom sound reinforcement system comprises: a display device, an image acquisition device and a plurality of sound acquisition devices; the image acquisition device and the display device are deployed at the location of the podium of the classroom, and the sound acquisition device is deployed on the roof of the classroom;

[0006] The image acquisition device is used to acquire classroom images;

[0007] The display device is used to determine a target sound collection device for collecting the teacher's voice from the plurality of sound collection devices according to the classroom image collected by the image collection device, and control the target sound collection device to collect the sound;

[0008] The display device is also used to play the teacher's voice collected by the target sound collection device.

[0009] In some embodiments, the classroom is divided into N areas, and a sound collection device is deployed on the roof corresponding to each area, where N is an integer greater than 1.

[0010] In some embodiments, the sound collection device is deployed at a rooftop location corresponding to the center of each area.

[0011] In some embodiments, the classroom sound reinforcement system further includes a sound playback device, and the sound playback device is an external device of the display device;

[0012] The display device is also used to play the teacher's voice collected by the target sound collection device through an external sound playing device.

[0013] In some embodiments, the display device includes a built-in sound playback device;

[0014] The display device is also used to play the teacher's voice collected by the target sound collection device through an external sound playing device or a built-in sound playing device.

[0015] In some embodiments, the display device further includes a built-in sound collection device;

[0016] The display device is also used to collect sound through the sound collection device built into the display device when the teacher is in a preset area of ​​the classroom.

[0017] In some embodiments, the image acquisition device is integrated into the display device, or the image acquisition device is an external device of the display device.

[0018] In some embodiments, the classroom sound reinforcement system includes at least two of the image acquisition devices;

[0019] When the image acquisition device is an external device of the display device, at least one image acquisition device is respectively disposed on both sides of the display device;

[0020] The image acquisition device is integrated into the display device, and the image acquisition device is integrated on the top of the display device.

[0021] In some embodiments, the sound collection device deployed on the roof communicates with the display device wirelessly or by wire.

[0022] In a second aspect, an embodiment of the present invention provides a smart classroom, wherein the smart classroom is deployed with the classroom sound reinforcement system described in any one of the first aspects.

[0023] The utility model provides a classroom sound amplification system and a smart classroom, the classroom sound amplification system includes: a display device, an image acquisition device and a plurality of sound acquisition devices; the image acquisition device and the display device are deployed at the location of the podium of the classroom, and the sound acquisition device is deployed on the roof of the classroom; the image acquisition device is used to acquire classroom images; the display device is used to determine a target sound acquisition device for acquiring the teacher's voice from a plurality of sound acquisition devices according to the classroom image acquired by the image acquisition device, and control the target sound acquisition device to acquire sound; the display device is also used to play the teacher's voice acquired by the target sound acquisition device. Through the above-mentioned sound amplification system, the problem of loss of sound amplification devices such as wireless collar microphones or infrared sound amplification microphones can be avoided, and howling of sound amplification devices or educational large screens can be avoided, effectively improving the quality of teachers' lectures. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation methods in the embodiments of the utility model or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings in the following description are some embodiments of the utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 The following is a schematic diagram of an existing classroom;

[0026] Figure 2 A schematic diagram of the structure of a display device provided by the utility model;

[0027] Figure 3 A schematic diagram of the structure of a classroom sound amplification system provided by the utility model Figure 1 ;

[0028] Figure 4 A schematic diagram of the structure of a classroom sound amplification system provided by the utility model Figure 2 ;

[0029] Figure 5 A schematic diagram of the structure of a classroom sound amplification system provided by the utility model Figure 3 .

[0030] The above drawings have shown clear embodiments of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0031] In order to make the purpose, implementation mode and advantages of the utility model clearer, the exemplary implementation mode of the utility model will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the utility model. Obviously, the described exemplary embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0032] It should be noted that the brief description of terms in the present invention is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of the present invention. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0033] First, the terms involved in this utility model are explained:

[0034] Howling: Usually refers to a high-frequency, sharp sound that makes people feel harsh and unpleasant. Electromagnetic interference inside or outside the electronic device may cause the electronic device to produce a howling sound. Electromagnetic interference can come from power supplies, other electronic devices, or wireless signals.

[0035] In addition, the terms "including" and "having" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components explicitly listed, but may include other components not explicitly listed or inherent to such products or devices.

[0036] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] Figure 1 A schematic diagram of a scenario provided by the utility model, such as Figure 1 As shown, in the current smart classroom, an educational large screen is installed behind the podium (for example, the original location of the blackboard) to display the courseware during the teacher's lecture.

[0038] During a lecture, the teacher may randomly walk around the classroom. In order to enable students in various positions in the classroom to clearly hear the lecture content, the teacher usually uses a portable wireless lavalier microphone or infrared amplifier microphone to amplify the lecture sound.

[0039] On the one hand, wireless collar microphones or infrared microphones and other sound amplification devices need to be worn by teachers, which are easy to be lost. On the other hand, in a classroom equipped with an educational large screen, when the teacher passes by the educational large screen, the sound amplification device or educational large screen worn by the teacher is prone to howling, seriously affecting the quality of the teacher's lecture.

[0040] In view of this, the utility model provides a classroom sound amplification system and a smart classroom, which collects the sound of the teacher during the lecture through a sound collection device arranged on the roof of the classroom, and plays the sound of the teacher during the lecture through a display device deployed at the podium position, so that the teacher does not need to wear a sound amplification device during the lecture, thereby avoiding the problem of the sound amplification device being easily lost, and the problem of howling in the sound amplification device or the display device, effectively improving the quality of the lecture.

[0041] The following specific embodiments are used to describe in detail the technical solution of the utility model and how the technical solution of the utility model solves the above technical problems. The following specific embodiments can be implemented independently or in combination with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0042] Figure 2 Schematic diagram of possible hardware configuration of the display device 200 provided by the present invention. Figure 2 As shown, in some embodiments, the display device 200 may include at least one of a tuner and demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a power supply 280, a memory 290, and a user interface 2100.

[0043] In some embodiments, the controller includes a processor, a video processor, an audio processor, a graphics processor, a RAM, a ROM, and a first interface to an nth interface for input / output.

[0044] The display 260 includes a display screen component for presenting images, a driving component for driving image display, a component for receiving image signals outputted from a controller, and displaying video content, image content, and a menu control interface and a user control UI interface.

[0045] The display 260 can be a liquid crystal display, an organic light-emitting diode (OLED), an active-matrix organic light emitting diode or an active-matrix organic light emitting diode (AMOLED), a flexible light-emitting diode (FLED), a Miniled, a MicroLed, a Micro-OLED, a quantum dot light emitting diode (QLED), and a projection display, etc. It can also be a projection device and a projection screen.

[0046] The communicator 220 is a component for communicating with an external device or server according to various communication protocol types. For example, the communicator may include at least one of a WiFi module, a Bluetooth module, a wired Ethernet module, and other network communication protocol chips or a near field communication protocol chip, and an infrared receiver. The display device 200 can establish transmission and reception of control signals and data signals with the external control device 100 or the server 400 through the communicator 220.

[0047] The user interface 2100 may be used to receive a control signal from the control device 100 (eg, an infrared remote controller, etc.).

[0048] The detector 230 is used to collect signals from the external environment or the external interaction. For example, the detector 230 includes a light receiver, a sensor for collecting the intensity of ambient light; or, the detector 230 includes an image collector, such as a camera, which can be used to collect external environment scenes, user attributes or user interaction gestures; or, the detector 230 includes a sound collector, such as a microphone, etc., for receiving external sounds.

[0049] The external device interface 240 may include, but is not limited to, any one or more of the following: a high-definition multimedia interface (HDMI), an analog or digital high-definition component input interface (component), a composite video input interface (CVBS), a USB input interface (USB), an RGB port, etc. It may also be a composite input / output interface formed by the above multiple interfaces.

[0050] The tuner-demodulator 210 receives broadcast television signals via wired or wireless reception, and demodulates audio and video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.

[0051] In some embodiments, the controller 250 and the tuner-demodulator 210 may be located in different separate devices, that is, the tuner-demodulator 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.

[0052] The controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in the memory 290. The controller 250 controls the overall operation of the display device 200. For example, in response to receiving a user command for selecting a UI object to be displayed on the display 260, the controller 250 can perform operations related to the object selected by the user command.

[0053] In some embodiments, the controller includes at least one of a central processing unit (CPU), a video processor, an audio processor, a graphics processing unit (GPU), RAM Random Access Memory (RAM), ROM (Read-Only Memory, ROM), a first interface to an nth interface for input / output, a communication bus (Bus), etc.

[0054] The user may input a user command through a graphical user interface (GUI) displayed on the display 260, and the user input interface receives the user input command through the graphical user interface (GUI). Alternatively, the user may input a user command through a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through a sensor.

[0055] "User interface" is the medium interface for interaction and information exchange between applications or operating systems and users. It realizes the conversion between the internal form of information and the form acceptable to users. The commonly used form of user interface is the Graphical User Interface (GUI), which refers to the user interface related to computer operation displayed in a graphical way. It can be an interface element such as an icon, window, control, etc. displayed on the display screen of an electronic device, where the control can include icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, widgets, etc.

[0056] The display device provided in the embodiments of the present application may have various implementation forms, for example, it may be a smart TV, a laser projection device, a monitor, an electronic bulletin board, an electronic table, etc.

[0057] Figure 3 The utility model provides a schematic diagram of a classroom sound amplification system, such as Figure 3 As shown, the classroom sound reinforcement system includes: a display device, an image acquisition device and multiple sound acquisition devices; the image acquisition device and the display device are deployed at the location of the podium in the classroom, and the sound acquisition device is deployed on the roof of the classroom.

[0058] The display device is connected to the image acquisition device and the plurality of sound acquisition devices, for example, by wired or wireless means.

[0059] In some embodiments, the display device being deployed at the location of the podium in the classroom may mean that the display device is deployed on the wall behind the location of the podium in the classroom (for example, the original blackboard location).

[0060] In some embodiments, the image acquisition device is deployed around the display device, as long as it is ensured that the image acquisition device can capture the complete classroom image. For example, the image acquisition device is deployed on the left side, right side, top, etc. of the display device, and the present invention does not limit this.

[0061] In some embodiments, the multiple sound collection devices can be deployed at different locations on the classroom roof, as long as the sound collection range of the multiple sound collection devices covers the entire classroom. Optionally, the sound collection ranges of the multiple sound collection devices do not overlap with each other.

[0062] In some embodiments, in order to further improve the efficiency and accuracy of collecting teachers' voices, the classroom is divided into N areas, and a sound collection device is set in the roof area corresponding to each area, which is responsible for collecting the sound in this area, and N is an integer greater than 1.

[0063] For example, Figure 3 As shown, the classroom is divided into 20 areas, and a sound collecting device is arranged in the roof area corresponding to each area, and a total of 20 sound collecting devices are arranged.

[0064] Optionally, for the sound collection device set in each area, the sound collection device can be set at any position in the corresponding area, for example, the center position of the area, the left position of the area, and the right position of the area. The present invention does not limit this.

[0065] In some embodiments, when the classroom is divided into N areas, the display device can capture an image of the classroom through the image acquisition device, establish a two-dimensional plane model of the classroom based on the acquired classroom image, and divide the classroom into N areas according to a matrix in the two-dimensional plane model.

[0066] In some embodiments, when the classroom is divided into N areas, the display device can establish a logical correspondence between the sound collection devices corresponding to the N areas, that is, the display device determines the sound collection area that each sound collection device is responsible for. For example, for sound collection device No. 1, it is set in area 1 and is used to collect sounds in area 1.

[0067] After the sound reinforcement system in the present invention is started, the image acquisition device can acquire classroom images in real time and send the acquired classroom images to the display device.

[0068] When the display device receives the classroom image, it can perform target recognition on the classroom image, determine the teacher in the classroom image, and locate the teacher to determine the position of the teacher in the classroom. For example, the display device can adopt an absorption learning model based on a preset teacher image to perform target recognition on the classroom image to determine the teacher in the classroom image. After the display device determines the teacher, it can compare the classroom image with a pre-established plane model of the classroom to determine the position of the teacher in the classroom.

[0069] After the display device determines the position of the teacher, it can determine which sound collection device the position belongs to based on the teacher's position, and use the sound collection device as the target sound collection device for collecting the teacher's voice. For example, two sound collection devices are deployed on the classroom roof, which are used to collect sounds from the left and right areas of the classroom respectively. When the display device determines that the teacher is on the left side of the classroom based on the teacher's position, the sound collection device responsible for collecting sounds from the left area is used as the target sound collection device.

[0070] In some embodiments, if the classroom is divided into N areas, the display device can determine the area where the teacher is located according to the teacher's position, and use the sound collection device corresponding to the area as the target sound collection device. For example, when the display device determines that the area where the teacher is located is area 1 according to the teacher's position, the display device can use the sound collection device 1 corresponding to area 1 as the target sound collection device.

[0071] When the display device determines the target sound collection device, it can control the target sound collection device to pick up sound, collect the teacher's voice, and play the teacher's voice.

[0072] In some embodiments, the display device has a built-in sound playback device. When the display device collects the teacher's voice through the target sound collection device, the collected teacher's voice can be played through the built-in sound playback device.

[0073] In some embodiments, the display device is externally connected to at least one sound playing device. When the display device collects the teacher's voice through the target sound collecting device, the collected teacher's voice can be played through the at least one external sound playing device.

[0074] In some embodiments, when the display device has both a built-in sound playback device and at least one external sound playback device, when the display device collects the teacher's voice through a target sound collection device, the collected teacher's voice can be played through at least one external sound playback device or the built-in sound playback device.

[0075] In some embodiments, when the display device is equipped with both a built-in sound playback device and at least one external sound playback device, when the display device collects the teacher's voice by picking up the sound through the target sound collection device, the display device can also determine based on the area of ​​the classroom whether to use at least one external sound playback device or a built-in sound playback device to play the collected teacher's voice. For example, when the area of ​​the classroom is larger than the preset area, the display device can use at least one external sound playback device to play the collected teacher's voice. When the area of ​​the classroom is less than or equal to the preset area, the display device can use the built-in sound playback device to play the collected teacher's voice. It should be understood that the display device can also determine based on other conditions whether to use at least one external sound playback device or a built-in sound playback device to play the collected teacher's voice. For example, the number of students is not limited by the present invention.

[0076] In some embodiments, the image acquisition device can be any device with an image acquisition function, such as a camera, a scanner, etc., the sound acquisition device can be any device with a sound acquisition function, such as a microphone, a pickup, etc., and the sound playing device can be any device with a sound playing function, such as a speaker, a sound box, etc. The utility model does not limit this.

[0077] The classroom sound amplification system provided by the utility model includes: a display device, an image acquisition device and a plurality of sound acquisition devices; the image acquisition device and the display device are deployed at the location of the podium of the classroom, and the sound acquisition device is deployed on the roof of the classroom; the image acquisition device is used to acquire classroom images; the display device is used to determine a target sound acquisition device for acquiring the teacher's voice from a plurality of sound acquisition devices according to the classroom image acquired by the image acquisition device, and control the target sound acquisition device to acquire sound; the display device is also used to play the teacher's voice acquired by the target sound acquisition device. The teacher's voice is acquired by the sound acquisition device deployed on the roof, and the teacher's voice is played by the display device, thereby avoiding the problem of loss that is easy to occur when using sound amplification devices such as wireless collar microphones or infrared sound amplification microphones, and also avoiding the sound amplification device or educational large screen from easily howling, effectively improving the quality of teachers' lectures.

[0078] Based on the above embodiments, the sound amplification system for a classroom provided by the present invention is further introduced below.

[0079] In some embodiments, the image acquisition device in the sound reinforcement system may be an external device of the display device, such as a camera or a camera external to the display device. Alternatively, the image acquisition device may be a device integrated into the display device, such as a camera unit included in the display device.

[0080] In some embodiments, in order to further improve the accuracy of classroom image acquisition, the sound reinforcement system includes at least two image acquisition devices.

[0081] If the image acquisition device is a device external to the display device, such as Figure 4 As shown, at least one image acquisition device is disposed on both sides of the display device. The two sides of the display device can be understood in a broad sense, for example, two sides flush with the position of the display device, two sides higher than the position of the display device, two sides on the top of the display device, etc.

[0082] If the image acquisition device is a device built into the display device, such as Figure 5 As shown, the image acquisition device is integrated on the top of the display device. The top of the display device can be understood in a broad sense, for example, 2 cm, 3 cm, 5 cm, etc. from the top frame of the display device. The application does not limit the specific position of the top.

[0083] In some embodiments, when the sound reinforcement system includes at least two image acquisition devices, the at least two image acquisition devices can simultaneously acquire classroom images and send them to the display device. When the display device receives the classroom images acquired by the at least two image acquisition devices, the display device can perform splicing and fusion processing on the multiple classroom images to obtain a high-quality classroom image, and locate the teacher based on the obtained high-quality classroom image.

[0084] In some embodiments, the display device also includes a built-in sound collection device.

[0085] The display device is also used to collect sound through the sound collection device built into the display device when the teacher is in a preset area of ​​the classroom.

[0086] For example, Figure 5 As shown, when the display device determines the preset area where the teacher is closer to the display device based on the teacher's position (for example, the teacher is in area 5, area 9, area 13), the display device can collect the teacher's voice through its built-in sound collection device. Because the teacher is closer to the display device than to the sound collection device on the roof when in this position, sound collection through the sound collection device built into the display device can improve the effect of sound collection.

[0087] In some embodiments, the classroom image captured by the image acquisition device may have blind spots. For example, when the teacher is in the upper left corner of area 1, the classroom image captured by the image acquisition device may not include the teacher. After the display device recognizes the classroom image, if the teacher is not recognized, it can use its own built-in sound acquisition device to collect sound, thereby avoiding the problem of being unable to locate the teacher's position and thus being unable to use the rooftop sound acquisition device to collect the teacher's voice.

[0088] In some embodiments, in order to further improve the playback effect of the collected teacher's voice, the display device can also optimize the collected teacher's voice, and play the optimized teacher's voice through a built-in sound playback device or an external sound playback device to improve the teaching effect.

[0089] For example, the display device can process the collected voice of the teacher using 3A audio processing technology. Among them, 3A audio processing technology is a collective name for three audio algorithms: acoustic echo cancellation (AEC), background noise suppression (ANS), and automatic gain control (AGC). Optionally, the display device can also optimize the collected voice of the teacher in other ways, for example, the present utility model does not limit this.

[0090] To sum up, the sound amplification system provided by the utility model can collect and play the teacher's lecture sound through the joint action of the display device, the image acquisition device, and the sound acquisition device deployed on the roof, which can avoid the howling problem during the lecture process and effectively improve the quality of the teacher's lecture.

[0091] On the basis of the above embodiments, the present invention further provides a smart classroom, which includes the classroom sound reinforcement system provided by any of the above embodiments.

[0092] It should be noted that the smart classroom provided by the present invention may include, in addition to the above-mentioned classroom sound reinforcement system, other related hardware equipment for teaching, such as a control device for the sound reinforcement system, lighting equipment, etc., which is not limited in the embodiments of the present application.

[0093] Finally, it should be noted that those skilled in the art will easily think of other embodiments of the utility model after considering the specification and practicing the utility model disclosed herein. The utility model is intended to cover any variation, use or adaptation of the utility model, which follows the general principles of the utility model and includes common knowledge or conventional technical means in the technical field not disclosed by the utility model, is not limited to the precise structure described above and shown in the drawings, and can be modified and changed in various ways without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. A classroom sound reinforcement system, characterized in that: The classroom sound amplification system includes: a display device, an image acquisition device and a plurality of sound acquisition devices; the image acquisition device and the display device are deployed at the location of the podium of the classroom, and the sound acquisition device is deployed on the roof of the classroom; The image acquisition device is used to acquire classroom images; The display device is used to determine a target sound collection device for collecting the teacher's voice from the plurality of sound collection devices according to the classroom image collected by the image collection device, and control the target sound collection device to collect the sound; The display device is also used to play the teacher's voice collected by the target sound collection device.

2. The classroom sound reinforcement system according to claim 1, characterized in that: The classroom is divided into N areas, and a sound collection device is deployed on the roof corresponding to each area, where N is an integer greater than 1.

3. The classroom sound reinforcement system according to claim 2, characterized in that: The sound collecting device is deployed on the rooftop location corresponding to the center of each area.

4. The classroom sound reinforcement system according to claim 3, characterized in that: The classroom sound amplification system further includes a sound playing device, which is an external device of the display device; The display device is also used to play the teacher's voice collected by the target sound collection device through an external sound playing device.

5. The classroom sound reinforcement system according to claim 4, characterized in that: The display device includes a built-in sound playing device; The display device is also used to play the teacher's voice collected by the target sound collection device through an external sound playing device or a built-in sound playing device.

6. The classroom sound reinforcement system according to claim 4, characterized in that: The display device also includes a built-in sound collection device; The display device is also used to collect sound through the sound collection device built into the display device when the teacher is in a preset area of ​​the classroom.

7. The classroom sound reinforcement system according to any one of claims 1 to 6, characterized in that: The image acquisition device is integrated into the display device, or the image acquisition device is an external device of the display device.

8. The classroom sound reinforcement system according to claim 7, characterized in that: The classroom sound reinforcement system includes at least two of the image acquisition devices; When the image acquisition device is an external device of the display device, at least one image acquisition device is respectively disposed on both sides of the display device; The image acquisition device is integrated into the display device, and the image acquisition device is integrated on the top of the display device.

9. The classroom sound reinforcement system according to claim 8, characterized in that: The sound collection device deployed on the roof communicates with the display device in a wireless or wired manner.

10. A smart classroom, characterized in that: The smart classroom is deployed with a classroom sound reinforcement system as described in any one of claims 1-9.

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