Multimodal sensor fusion-based acoustic noise reduction method and device

Abstract

The present application relates to the technical field of sound noise reduction, and discloses a sound noise reduction method and device based on multi-modal sensor fusion, which comprises a sound body, a loudspeaker is mounted on the surface of the sound body, a noise reduction mechanism is arranged on the surface of the sound body, the noise reduction mechanism comprises an inclination sensor, the inclination sensor is mounted on the upper surface of the sound body, and two symmetrically arranged mounting seats are fixedly connected to the two sides of the sound body.In the present application, when the working area is in an inclined state, the inclination sensor and the vibration sensor are combined to monitor in real time, the inclination and vibration abnormal conditions are accurately identified, and the adjusting mechanism such as the telescopic rod is started, the noise generated when the sound body is inclined is eliminated from the perspective of mechanical adjustment, the sound can work stably in a complex and uneven environment, the use scene of the sound is greatly expanded, and the sound can normally operate whether on an uneven indoor ground or a rugged outdoor site.

Description

Technical Field

[0001] This invention relates to the field of audio noise reduction technology, specifically to an audio noise reduction method and apparatus based on multimodal sensor fusion. Background Technology

[0002] An audio system is a device used to convert electrical signals into sound signals and play them back. It mainly consists of a sound source, amplifier, and speakers. Audio systems are widely used in home theaters, stage performances, conference venues, etc., and can bring people a high-quality auditory experience and create various desired acoustic atmospheres. They are an indispensable audio playback device in modern life.

[0003] Currently, most audio equipment is placed on a tabletop for use. When the tabletop is tilted, the sound-generating units inside the audio equipment, such as the speaker, are easily misaligned, resulting in uneven gaps between the voice coil and the magnet. This leads to uneven driving force generated when current passes through the voice coil, causing irregular vibration of the diaphragm and thus generating noise. To address this, we propose an audio noise reduction method and device based on multimodal sensor fusion. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multimodal sensor fusion-based audio noise reduction method and device. This solves the problem that most existing audio systems are often placed on a tabletop, and when the tabletop is tilted, the sound-generating units inside the audio system, such as the speaker, are easily misaligned. This leads to uneven gaps between the voice coil and the magnet, uneven driving force generated when current passes through the voice coil, and irregular vibration of the diaphragm, thus generating noise.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multimodal sensor fusion-based audio noise reduction device, comprising an audio body, a speaker mounted on the surface of the audio body, a noise reduction mechanism provided on the surface of the audio body, the noise reduction mechanism including a tilt sensor mounted on the upper surface of the audio body, two symmetrically arranged mounting seats fixedly connected to both sides of the audio body, vibration sensors fixedly connected to the mounting seats, a threaded sleeve rotatably connected to the upper surface of the audio body, a screw threadedly connected to the threaded sleeve, a pull rope fixedly connected to the upper end of the screw, and a... The circuit board has a processing module, a transmitting module, and a receiving module mounted on its lower surface. A counterweight is mounted on the lower surface of the speaker unit. When the working area is tilted, the system uses tilt and vibration sensors for real-time monitoring to accurately identify tilt and vibration anomalies and activate adjustment mechanisms such as telescopic rods. This mechanical adjustment eliminates noise caused by the speaker's tilt, ensuring stable operation even in complex and uneven environments. This greatly expands the speaker's application scenarios, guaranteeing normal operation on uneven indoor surfaces or rugged outdoor terrain.

[0006] Preferably, a base plate is placed below the speaker body, a stabilizing frame is fixedly connected to the upper surface of the base plate, a support rod is fixedly connected to the upper end of the stabilizing frame, a carrier is fixedly connected to the upper end of the support rod, a stabilizing rod is fixedly connected to the upper surface of the carrier, a telescopic rod is rotatably mounted on the stabilizing rod, a connecting frame is rotatably connected to the driving end of the telescopic rod, the end of the pull rope away from the screw is fixedly connected to the surface of the connecting frame, a control box is fixedly connected to the surface of the support frame, the output end of the control box is electrically connected to the telescopic rod, a handle is fixedly connected to the upper surface of the carrier, a support frame is fixedly connected to the lower surface of the base plate, and a pad is fixedly connected to the lower surface of the base plate.

[0007] Preferably, the output of the processing module is electrically connected to the input of the transmitting module, the output of the receiving module is electrically connected to the input of the processing module, the output of the tilt sensor is electrically connected to the processing module, the output of the vibration sensor is electrically connected to the processing module, the output of the control box is electrically connected to the receiving module, and the input of the control box is electrically connected to the transmitting module. By utilizing multimodal sensor fusion technology, real-time intelligent monitoring of the audio system's operating status is achieved. Once an abnormal signal is detected, the system can quickly complete signal transmission, analysis, processing, and command execution, automatically adjusting the audio system's status without manual intervention. This reduces manual maintenance costs and improves ease of use and reliability.

[0008] Preferably, an adjustment knob is installed on the side of the speaker body away from the speaker, an audio connector is installed on the side of the speaker body near the adjustment knob, a power supply interface is installed on the side of the speaker body near the adjustment knob, and a power switch is installed on the side of the speaker body near the adjustment knob, which facilitates the stable use of the speaker body.

[0009] Preferably, the upper surface of the carrier is provided with a guide hole, the pull rope passes through the guide hole, and a guide frame is fixedly connected to the upper surface of the carrier. The pull rope passes through the guide frame, which facilitates the limiting operation of the pull rope and ensures that the speaker body is stably pulled up by the pull rope.

[0010] Preferably, a guide roller is rotatably connected to the inner wall of the guide hole, and the pull rope rests on the guide roller to reduce wear on the pull rope.

[0011] Preferably, the upper surface of the base plate is provided with a stabilizing mechanism, which includes a rubber seat. The lower end of the speaker body is inserted into the rubber seat. A first magnet is fixedly connected to the inner wall of the rubber seat. A second magnet is installed on the lower surface of the speaker body. The second magnet and the first magnet are magnetically attracted to each other. By attracting the rubber seat to the magnet, the noise generated by the speaker body is reduced from a physical level before use.

[0012] Preferably, the surface of the support rod is provided with a storage mechanism, the storage mechanism is close to the sliding sleeve, the sliding sleeve is slidably connected to the surface of the support rod, the lower surface of the sliding sleeve is fixedly connected to a bracket, the lower end of the bracket is fixedly connected to a positioning frame, and the inner wall of the sliding sleeve is threaded with a fastening bolt. Through the positioning frame, the power supply line and audio line can be effectively stored.

[0013] Preferably, the inner wall of the positioning frame is rotatably connected to a first rubber roller, and the inner wall of the stabilizing frame is rotatably connected to a second rubber roller. The positioning frame, the sliding sleeve, and the rubber rollers effectively manage the power supply line and the audio line, which not only reduces the noise caused by cable vibration, but also allows the rotatable rubber rollers to clamp the cable without affecting the user's pulling operation of the cable, thus balancing noise reduction effect and usage flexibility, making the surrounding environment of the speaker cleaner and more orderly.

[0014] Preferably, it includes the following steps:

[0015] S1. Before use, place the speaker body into the rubber base and fix it in place by the first and second magnets. Then lift the handle and move it to the area of ​​use.

[0016] S2. Pass the power cable and audio cable through the positioning frame and connect them to the corresponding interfaces. Pull the sliding sleeve to make the first and second rubber rollers clamp the cables to reduce noise. Finally, turn on the power switch to start the speaker.

[0017] S3. During operation, the tilt sensor and vibration sensor monitor the audio status in real time. Once the tilt exceeds the preset value or there is abnormal vibration, the signal is immediately transmitted to the processing module.

[0018] S4. After the processing module processes the signal, it is wirelessly transmitted through the transmitting module. After the control box receives and judges the abnormality, it sends an adjustment command to the telescopic rod.

[0019] S5. Pull the extension rod and pull the rope to adjust the position of the speaker. The counterweight ensures that it is vertical. Continuously monitor and adjust it to a stable position to reduce shaking noise.

[0020] In summary, the technical effects and advantages of this invention are as follows:

[0021] 1. In this invention, when the working area is tilted, the tilt sensor and vibration sensor are used for real-time monitoring to accurately identify tilt and vibration abnormalities and activate adjustment mechanisms such as telescopic rods. This eliminates the noise caused by the tilt of the speaker body from a mechanical adjustment perspective, ensuring that the speaker can work stably in complex and uneven environments. This greatly expands the application scenarios of the speaker, ensuring normal operation of the speaker whether it is on uneven indoor ground or rugged outdoor terrain.

[0022] 2. In this invention, multimodal sensor fusion technology is used to realize real-time intelligent monitoring of the working status of the audio system. Once an abnormal signal is detected, the system can quickly complete signal transmission, analysis and processing and command execution. The audio system can be automatically adjusted without manual intervention, which reduces the cost of manual maintenance and improves the convenience and reliability of use.

[0023] 3. In this invention, the noise generated by the speaker body is reduced from a physical level before use by adsorbing the rubber base with the magnet. At the same time, the power supply and audio cables are effectively managed by the positioning frame, sliding sleeve and rubber roller. This not only reduces the noise caused by cable vibration, but also the rotatable rubber roller clamps the cable without affecting the user's pulling operation of the cable. It takes into account both noise reduction effect and usage flexibility, making the surrounding environment of the speaker more tidy and orderly. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the audio noise reduction device based on multimodal sensor fusion of the present invention;

[0025] Figure 2 This is a schematic diagram of the audio noise reduction device based on multimodal sensor fusion according to the present invention;

[0026] Figure 3 This is a schematic diagram of the audio noise reduction device based on multimodal sensor fusion according to the present invention;

[0027] Figure 4 This is a schematic diagram of the audio noise reduction device based on multimodal sensor fusion according to the present invention;

[0028] Figure 5 This is a schematic diagram of the audio noise reduction device based on multimodal sensor fusion according to the present invention;

[0029] Figure 6 This is a schematic diagram of the audio noise reduction device based on multimodal sensor fusion according to the present invention;

[0030] Figure 7 This is a schematic diagram of the audio noise reduction device based on multimodal sensor fusion according to the present invention;

[0031] Figure 8 This is a schematic diagram of the audio noise reduction device based on multimodal sensor fusion according to the present invention;

[0032] Figure 9 This is a schematic diagram of the audio noise reduction method based on multimodal sensor fusion according to the present invention.

[0033] In the diagram: 1. Speaker body; 2. Speaker; 3. Noise reduction mechanism; 31. Base plate; 32. Stabilizer; 33. Support rod; 34. Carrier frame; 35. Control box; 36. Handle; 37. Guide hole; 38. Guide roller; 39. Pull rope; 310. Guide frame; 311. Connecting frame; 312. Telescopic rod; 313. Stabilizer; 314. Screw; 315. Threaded sleeve; 316. Tilt sensor; 317. Support frame; 318. Mounting base; 319. Vibration sensor 320. Counterweight; 321. Pad; 322. Circuit board; 323. Processing module; 324. Transmitting module; 325. Receiving module; 4. Stabilizing mechanism; 41. Rubber base; 42. First magnet; 43. Second magnet; 5. Power switch; 6. Storage mechanism; 61. Positioning frame; 62. First rubber roller; 63. Second rubber roller; 64. Bracket; 65. Sliding sleeve; 66. Fastening bolt; 7. Power supply interface; 8. Adjustment knob; 9. Audio connector. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] refer to Figures 1-9The multimodal sensor fusion-based audio noise reduction method and apparatus shown includes an audio body 1, a speaker 2 mounted on the surface of the audio body 1, and a noise reduction mechanism 3 disposed on the surface of the audio body 1. The noise reduction mechanism 3 includes a tilt sensor 316, which is mounted on the upper surface of the audio body 1. Two symmetrically arranged mounting seats 318 are fixedly connected to both sides of the audio body 1, and vibration sensors 319 are fixedly connected to the mounting seats 318. A threaded sleeve 315 is rotatably connected to the upper surface of the audio body 1, and a screw 314 is threadedly connected to the threaded sleeve 315. A pull rope 39 is fixedly connected to the upper end of the screw 314. A circuit board 322 is fixedly connected inside the audio body 1. The lower surface of the speaker body 1 is equipped with a processing module 323, the lower surface of the circuit board 322 is equipped with a transmitting module 324, the lower surface of the circuit board 322 is equipped with a receiving module 325, and the lower surface of the speaker body 1 is equipped with a counterweight 320. When the working area is tilted, the tilt sensor 316 and vibration sensor 319 monitor in real time, accurately identify tilt and vibration abnormalities, and activate adjustment mechanisms such as the telescopic rod 312. From the perspective of mechanical adjustment, the noise generated by the tilt of the speaker body 1 is eliminated, ensuring that the speaker can work stably in complex and uneven environments. This greatly expands the application scenarios of the speaker, ensuring normal operation of the speaker whether it is an uneven indoor ground or a rugged outdoor site.

[0036] The speaker body 1 is placed on a base plate 31. A stabilizing frame 32 is fixedly connected to the upper surface of the base plate 31. A support rod 33 is fixedly connected to the upper end of the stabilizing frame 32. A carrier frame 34 is fixedly connected to the upper end of the support rod 33. A stabilizing rod 313 is fixedly connected to the upper surface of the carrier frame 34. A telescopic rod 312 is rotatably mounted on the stabilizing rod 313. A connecting frame 311 is rotatably connected to the driving end of the telescopic rod 312. The end of the pull rope 39 away from the screw 314 is fixedly connected to the surface of the connecting frame 311. A control box 35 is fixedly connected to the surface of the support frame. The output end of the control box 35 is electrically connected to the telescopic rod 312. A handle 36 is fixedly connected to the upper surface of the carrier frame 34. A support frame 317 is fixedly connected to the lower surface of the base plate 31. A pad 321 is fixedly connected to the lower surface of the base plate 31.

[0037] The output of the processing module 323 is electrically connected to the input of the transmitting module 324, the output of the receiving module 325 is electrically connected to the input of the processing module 323, the output of the tilt sensor 316 is electrically connected to the processing module 323, the output of the vibration sensor 319 is electrically connected to the processing module 323, the output of the control box 35 is electrically connected to the receiving module 325, and the input of the control box 35 is electrically connected to the transmitting module 324. By utilizing multimodal sensor fusion technology, real-time intelligent monitoring of the audio system's operating status is achieved. Once an abnormal signal is detected, the system can quickly complete signal transmission, analysis and processing, and command execution, automatically adjusting the audio system's status without manual intervention. This reduces manual maintenance costs and improves ease of use and reliability.

[0038] The speaker body 1 has an adjustment knob 8 on the side away from the speaker 2, an audio connector 9 on the side of the speaker body 1 close to the adjustment knob 8, a power supply interface 7 on the side of the speaker body 1 close to the adjustment knob 8, and a power switch 5 on the side of the speaker body 1 close to the adjustment knob 8, which facilitates the stable use of the speaker body 1.

[0039] The upper surface of the carrier 34 is provided with a guide hole 37, through which the pull rope 39 passes. A guide frame 310 is fixedly connected to the upper surface of the carrier 34, through which the pull rope 39 passes, so as to facilitate the limit operation of the pull rope 39 and ensure that the speaker body 1 is stably pulled up by the pull rope 39.

[0040] The inner wall of the guide hole 37 is rotatably connected to the guide roller 38, and the pull rope 39 rests on the guide roller 38 to reduce the wear of the pull rope 39.

[0041] The upper surface of the base plate 31 is provided with a stabilizing mechanism 4, which includes a rubber seat 41. The lower end of the speaker body 1 is inserted into the rubber seat 41. A first magnet 42 is fixedly connected to the inner wall of the rubber seat 41. A second magnet 43 is installed on the lower surface of the speaker body 1. The second magnet 43 and the first magnet 42 are magnetically attracted. By attracting the rubber seat 41 to the magnet, the noise generated by the speaker body 1 is reduced from a physical level before use.

[0042] The support rod 33 has a storage mechanism 6 on its surface. The storage mechanism 6 is close to the sliding sleeve 65. The sliding sleeve 65 is slidably connected to the surface of the support rod 33. The lower surface of the sliding sleeve 65 is fixedly connected to a bracket 64. The lower end of the bracket 64 is fixedly connected to a positioning frame 61. The inner wall of the sliding sleeve 65 is threaded with a fastening bolt 66. The positioning frame 61 can effectively store the power supply line and audio line.

[0043] The positioning frame 61 has a first rubber roller 62 rotatably connected to its inner wall, and the stabilizing frame 32 has a second rubber roller 63 rotatably connected to its inner wall. The positioning frame 61, the sliding sleeve 65, and the rubber rollers effectively manage the power supply and audio cables, which not only reduces the noise caused by cable vibration, but also allows the rotatable rubber rollers to clamp the cables without affecting the user's pulling operation of the cables, thus balancing noise reduction and flexibility of use, making the environment around the audio equipment cleaner and more orderly.

[0044] This includes the following steps:

[0045] S1. Before use, place the speaker body 1 into the rubber base 41 and fix it by adsorption with the first magnet 42 and the second magnet 43. Then lift the handle 36 and move it to the area of ​​use.

[0046] S2. Pass the power supply cable and audio cable through the positioning frame 61 and connect them to the corresponding interfaces. Pull the sliding sleeve 65 to make the first rubber roller 62 and the second rubber roller 63 clamp the cable to reduce noise. Finally, turn on the power switch 5 to start the audio.

[0047] S3. During operation, the tilt sensor 316 and vibration sensor 319 monitor the audio status in real time. Once the tilt exceeds the preset value or abnormal vibration occurs, the signal is immediately transmitted to the processing module 323.

[0048] S4. After processing the signal, the processing module 323 transmits it wirelessly through the transmitting module 324. After receiving and judging the abnormality, the control box 35 sends an adjustment command to the telescopic rod 312.

[0049] S5, the telescopic rod 312 pulls the rope 39 to adjust the position of the speaker, and the counterweight 320 ensures that it is vertical. It is continuously monitored and adjusted to be stable to reduce shaking noise.

[0050] Working principle of this invention: Before using the speaker body 1, place it in the rubber base 41. The second magnet 43 and the first magnet 42 attract each other, ensuring stable use of the speaker body 1. Then, lift the handle 36 to move the speaker body 1 to the usage area. Next, pass the power cable and audio cable through the positioning frame 61 and connect them to the power interface 7 and audio plug. Then, pull the sliding sleeve 65 upwards. The sliding sleeve 65, through the bracket 64, moves the positioning frame 61 and the first rubber roller 62 upwards. The first rubber roller 62, in conjunction with the second rubber roller 63, stably clamps the power cable and audio cable, preventing them from shaking and effectively reducing noise. Since both the first rubber roller 62 and the second rubber roller 63 can rotate, the user can still pull the power cable or audio cable. Finally, turn on the power switch 5 to begin using the speaker body 1.

[0051] When the working area is tilted, the tilt angle change of the speaker body 1 is monitored in real time by the tilt sensor 316. At the same time, the vibration sensor 319 is responsible for sensing the vibration caused by the speaker during operation or by the external environment. Once the tilt angle of the speaker exceeds the preset value, or the vibration sensor 319 detects an abnormal vibration signal, it will transmit the collected analog signal to the processing module 323 on the circuit board 322. After receiving the signals from the tilt sensor 316 and the vibration sensor 319, the processing module 323 analyzes, calculates and processes them. The processing module 323 transmits the processed digital signal to the transmitting module 324, and the transmitting module 324 transmits the signal wirelessly.

[0052] After receiving the signal from the transmitting module 324, the control box 35 analyzes and judges according to the preset program. If the speaker is detected to be tilted or vibrating abnormally, the control box 35 sends a command to the telescopic rod 312. The drive end of the telescopic rod 312 starts to move, pulling the pull rope 39 through the connecting frame 311. Since the pull rope 39 is connected to the screw 314, the speaker body 1 is pulled out of the rubber seat 41. The counterweight 320 ensures that the speaker body 1 is always in a vertical state. The tilt sensor 316 and the vibration sensor 319 check the state of the speaker body 1. At the same time, the telescopic rod 312 and the pull rope 39 continuously adjust the state of the speaker body 1. When the speaker body 1 is stable, the noise caused by the shaking of the speaker body 1 can be effectively reduced. At this time, the movement of the telescopic rod 312 can be stopped, and the speaker body 1 can then operate normally and stably.

[0053] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multimodal sensor fusion-based audio noise reduction device, comprising an audio body (1), characterized in that: A speaker (2) is mounted on the surface of the speaker body (1). A noise reduction mechanism (3) is provided on the surface of the speaker body (1). The noise reduction mechanism (3) includes a tilt sensor (316). The tilt sensor (316) is mounted on the upper surface of the speaker body (1). Two symmetrically arranged mounting seats (318) are fixedly connected to both sides of the speaker body (1). A vibration sensor (319) is fixedly connected in the mounting seat (318). A threaded sleeve is rotatably connected to the upper surface of the speaker body (1). (315), a screw (314) is threadedly connected to the threaded sleeve (315), and a pull rope (39) is fixedly connected to the upper end of the screw (314). A circuit board (322) is fixedly connected inside the speaker body (1). A processing module (323) is installed on the lower surface of the circuit board (322). A transmitting module (324) is installed on the lower surface of the circuit board (322). A receiving module (325) is installed on the lower surface of the speaker body (1). A base plate (31) is placed below the speaker body (1) and equipped with a counterweight (320). A stabilizer (32) is fixedly connected to the upper surface of the base plate (31). A support rod (33) is fixedly connected to the upper end of the stabilizer (32). A carrier frame (34) is fixedly connected to the upper end of the support rod (33). A stabilizer rod (313) is fixedly connected to the upper surface of the carrier frame (34). A telescopic rod (312) is rotatably mounted on the stabilizer rod (313). The drive end of the telescopic rod (312) is rotatably connected to... A connecting frame (311) is attached. The end of the pull rope (39) away from the screw (314) is fixedly connected to the surface of the connecting frame (311). A control box (35) is fixedly connected to the surface of the support rod (33). The output end of the control box (35) is electrically connected to the telescopic rod (312). A handle (36) is fixedly connected to the upper surface of the carrier (34). A support frame (317) is fixedly connected to the lower surface of the base plate (31). A pad (321) is fixedly connected to the lower surface of the base plate (31).

2. The audio noise reduction device based on multimodal sensor fusion according to claim 1, characterized in that: The output of the processing module (323) is electrically connected to the input of the transmitting module (324), the output of the receiving module (325) is electrically connected to the input of the processing module (323), the output of the tilt sensor (316) is electrically connected to the processing module (323), the output of the vibration sensor (319) is electrically connected to the processing module (323), the output of the control box (35) is electrically connected to the receiving module (325), and the input of the control box (35) is electrically connected to the transmitting module (324).

3. The audio noise reduction device based on multimodal sensor fusion according to claim 1, characterized in that: An adjustment knob (8) is installed on the side of the speaker body (1) away from the speaker (2). An audio connector (9) is installed on the side of the speaker body (1) close to the adjustment knob (8). A power supply interface (7) is installed on the side of the speaker body (1) close to the adjustment knob (8). A power switch (5) is installed on the side of the speaker body (1) close to the adjustment knob (8).

4. The audio noise reduction device based on multimodal sensor fusion according to claim 1, characterized in that: The upper surface of the carrier (34) is provided with a guide hole (37), the pull rope (39) passes through the guide hole (37), and a guide frame (310) is fixedly connected to the upper surface of the carrier (34), the pull rope (39) passes through the guide frame (310).

5. The audio noise reduction device based on multimodal sensor fusion according to claim 4, characterized in that: The inner wall of the guide hole (37) is rotatably connected to a guide roller (38), and the pull rope (39) rests on the guide roller (38).

6. The audio noise reduction device based on multimodal sensor fusion according to claim 1, characterized in that: The upper surface of the base plate (31) is provided with a stabilizing mechanism (4), which includes a rubber seat (41). The lower end of the speaker body (1) is inserted into the rubber seat (41). A first magnet (42) is fixedly connected to the inner wall of the rubber seat (41). A second magnet (43) is installed on the lower surface of the speaker body (1). The second magnet (43) and the first magnet (42) are magnetically attracted to each other.

7. The audio noise reduction device based on multimodal sensor fusion according to claim 1, characterized in that: The surface of the support rod (33) is provided with a storage mechanism (6), the storage mechanism (6) is close to the sliding sleeve (65), the sliding sleeve (65) is slidably connected to the surface of the support rod (33), the lower surface of the sliding sleeve (65) is fixedly connected with a bracket (64), the lower end of the bracket (64) is fixedly connected with a positioning frame (61), and the inner wall of the sliding sleeve (65) is threaded with a fastening bolt (66).

8. The audio noise reduction device based on multimodal sensor fusion according to claim 7, characterized in that: The inner wall of the positioning frame (61) is rotatably connected to a first rubber roller (62), and the inner wall of the stabilizing frame (32) is rotatably connected to a second rubber roller (63).

9. A multimodal sensor fusion-based audio noise reduction method, applied to the multimodal sensor fusion-based audio noise reduction device as described in claim 8, characterized in that: Includes the following steps: S1. Before use, place the speaker body (1) into the rubber base (41) and fix it by adsorption with the first magnet (42) and the second magnet (43). Then lift the handle (36) and move it to the area of ​​use. S2. Pass the power supply line and audio line through the positioning frame (61) and connect them to the corresponding interfaces. Pull the sliding sleeve (65) to make the first rubber roller (62) and the second rubber roller (63) clamp the cable to reduce noise. Finally, turn on the power switch (5) to start the audio system. S3. During operation, the tilt sensor (316) and vibration sensor (319) monitor the audio status in real time. Once the tilt exceeds the preset value or abnormal vibration occurs, the signal is immediately transmitted to the processing module (323). S4. After the processing module (323) processes the signal, it is wirelessly transmitted through the transmitting module (324). After the control box (35) receives the signal from the transmitting module (324), it sends an adjustment command to the telescopic rod (312). S5. Pull the telescopic rod (312) and pull the rope (39) to adjust the position of the speaker. The counterweight (320) ensures that it is perpendicular to the ground. Continuously monitor and adjust to stabilize to reduce shaking noise.

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