Communication noise reduction equipment based on improved Kalman filtering

Abstract

The utility model relates to the technical field of noise reduction equipment, and discloses communication noise reduction equipment based on improved Kalman filtering, which comprises earmuffs, the outer walls of the earmuffs are fixedly connected with sponge pads, the interiors of the earmuffs are fixedly connected with dust screens, the interiors of the earmuffs are slidably connected with noise reduction rings, and the noise reduction rings are connected with the sponge pads. Noise reduction soft cotton is fixedly connected to the interiors of the noise reduction rings, fixing rings are fixedly connected to the outer walls of the earmuffs, baffles are slidably connected to the interiors of the fixing rings, first springs are arranged in the fixing rings, and limiting blocks are fixedly connected to the outer walls of the baffles. According to the communication noise reduction device, the rotating ring is rotated to drive the limiting block to slide in the limiting groove, meanwhile, the limiting block drives the baffle to slide in the fixing ring till the baffle does not shield the noise reduction ring any more, and the problem that noise reduction devices in most of existing communication noise reduction devices are inconvenient to disassemble and replace is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction equipment, in particular to a communication noise reduction equipment based on improved Kalman filtering. Background Art

[0002] Communication equipment is a modern information tool that can process multiple media forms such as images, music, and video streams, and provide the transmission and communication of multiple information services including web browsing, teleconferencing, and e-commerce. Noise-cancelling headphones refer to headphones that use a certain method to reduce noise. They can be used with a variety of communication equipment to reduce and isolate noise from the user's ears. Kalman filtering is a classic signal processing and state estimation technology that is widely used in control systems, navigation systems, communication systems, and other fields. In the field of communications, Kalman filtering is also used to reduce noise in communication signals and improve the performance and reliability of communication systems.

[0003] Existing communication noise reduction equipment is used to reduce environmental noise and improve the clarity and quality of audio signals. It is widely used in scenarios that require clear voice communication, such as telephones, walkie-talkies, headphones, and conference systems. At the same time, writing an improved Kalman filter algorithm into the device can enable the device to more accurately predict and eliminate noise, thereby improving the quality of voice signals.

[0004] However, most existing communication noise reduction equipment is an integrated fixed structure. When the internal noise reduction components need to be repaired and cleaned, it is not convenient to directly disassemble the equipment, which increases the difficulty of repairing the noise reduction components and increases the overall maintenance time of the equipment, shortening the service life of the equipment. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a communication noise reduction device based on improved Kalman filtering, aiming to improve the problem that most of the existing communication noise reduction devices are not convenient for disassembly and replacement of internal noise reduction components.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a communication noise reduction device based on improved Kalman filtering, comprising an earmuff, the outer wall of the earmuff is fixedly connected with a sponge pad, the interior of the earmuff is fixedly connected with a dustproof net, the interior of the earmuff is slidably connected with a silencer ring, the interior of the silencer ring is fixedly connected with noise reduction sponge, the outer wall of the earmuff is fixedly connected with a fixing ring, the interior of the fixing ring is slidably connected with a baffle, a first spring is arranged inside the fixing ring, one end of the first spring is fixedly connected to the interior of the fixing ring, the other end of the first spring is fixedly connected to the outer wall of the baffle, the outer wall of the baffle is fixedly connected with a limiting block, the outer wall of the limiting block is slidably connected with a movable ring, a limiting groove is provided inside the movable ring, the outer wall of the limiting block is slidably connected to the interior of the limiting groove, the outer wall of the movable ring is fixedly connected with a swivel, and a protective component is arranged inside the fixed ring.

[0007] Furthermore, the protection component includes a positioning rod, an outer wall of the positioning rod is slidably connected to the inside of the fixing ring, and the outer wall of the positioning rod is fixedly connected to the outer shell.

[0008] Furthermore, the outer wall of the earmuff is fixedly connected to a fixing seat, and the outer wall of the fixing seat is rotatably connected to a sliding sleeve.

[0009] Furthermore, an ear hook is fixedly connected to the interior of the sliding sleeve, and a positioning hole is provided inside the ear hook.

[0010] Furthermore, the outer wall of the ear hook is slidably connected to a headband, and the outer wall of the headband is fixedly connected to a fixing sleeve.

[0011] Furthermore, a sliding rod is slidably connected to the interior of the fixing sleeve, and a pulling plate is fixedly connected to the outer wall of the sliding rod.

[0012] Furthermore, a clamping block is fixedly connected to the outer wall of the sliding rod, and a second spring is sleeved on the outer wall of the sliding rod.

[0013] Furthermore, one end of the second spring is fixedly connected to the outer wall of the fixing sleeve, and the other end of the second spring is fixedly connected to the outer wall of the pulling plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, firstly, the limit block is driven to slide in the limit groove by rotating the rotating ring, and at the same time, the limit block drives the baffle to slide inside the fixed ring until the baffle no longer blocks the silencer ring, thereby achieving the effect of disassembling the internal components of the equipment, solving the problem that most of the existing communication noise reduction equipment are inconvenient to disassemble and replace the internal noise reduction components, improving the convenience of the communication noise reduction equipment, and extending the service life of the equipment.

[0016] 2. In the utility model, the second spring is stretched by pulling the pull plate, and the slide bar can be slid out of the positioning hole and then inserted into another set of positioning holes, so as to achieve the effect of adjusting the length of the ear hooks on both sides of the device. This solves the problem that most of the existing communication noise reduction devices are not convenient for adjusting the length of the left and right ends, thereby reducing the problem of wearing comfort, improves the adjustability of the communication noise reduction device, and expands the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a communication noise reduction device based on improved Kalman filtering proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of an earmuff of a communication noise reduction device based on an improved Kalman filter proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the movable ring part of a communication noise reduction device based on improved Kalman filtering proposed by the utility model;

[0020] Figure 4 The utility model provides a schematic structural diagram of a fixed sleeve portion of a communication noise reduction device based on improved Kalman filtering.

[0021] Legend:

[0022] 1. Earmuffs; 2. Sponge pads; 3. Dust-proof nets; 4. Silencing rings; 5. Noise-reducing sponges; 6. Fixed rings; 7. Baffles; 8. First spring; 9. Limiting blocks; 10. Movable rings; 11. Limiting grooves; 12. Swivels; 13. Positioning rods; 14. Outer shells; 15. Fixed seats; 16. Slide sleeves; 17. Ear hooks; 18. Positioning holes; 19. Headbands; 20. Fixed sleeves; 21. Slide rods; 22. Pull plates; 23. Blocks; 24. Second springs. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1 , Figure 2 and Figure 3The utility model provides an embodiment: a communication noise reduction device based on improved Kalman filtering, comprising an earmuff 1, a sponge pad 2 is fixedly connected to the outer wall of the earmuff 1, a dustproof net 3 is fixedly connected to the inside of the earmuff 1, a silencer ring 4 is slidably connected to the inside of the earmuff 1, a noise reduction sponge 5 is fixedly connected to the inside of the silencer ring 4, a fixing ring 6 is fixedly connected to the outer wall of the earmuff 1, a baffle 7 is slidably connected to the inside of the fixing ring 6, a first spring 8 is arranged inside the fixing ring 6, one end of the first spring 8 is fixedly connected to the inside of the fixing ring 6, and the first spring 8 is fixedly connected to the inside of the fixing ring 6. The other end of a spring 8 is fixedly connected to the outer wall of the baffle 7, the outer wall of the baffle 7 is fixedly connected to the limiting block 9, the outer wall of the limiting block 9 is slidably connected to a movable ring 10, the inner part of the movable ring 10 is provided with a limiting groove 11, the outer wall of the limiting block 9 is slidably connected to the inner part of the limiting groove 11, the outer wall of the movable ring 10 is fixedly connected to a swivel 12, and a protective component is arranged inside the fixed ring 6; the protective component includes a positioning rod 13, the outer wall of the positioning rod 13 is slidably connected to the inner part of the fixed ring 6, and the outer wall of the positioning rod 13 is fixedly connected to a housing 14;

[0025] Specifically, by rotating the swivel ring 12, the internal movable ring 10 will rotate accordingly, causing the limit block 9 to slide inside the limit groove 11, and at the same time applying a pulling force to the baffle 7. As the baffle 7 slides inside the fixed ring 6, the first spring 8 is compressed, which can ensure that the baffle 7 remains in a suitable position during the disassembly process, avoiding unnecessary friction or damage. At the same time, the function of the first spring 8 is to push the baffle 7 back and reset it after the disassembly is completed so that it can work normally the next time it is used. When the baffle 7 completely slides into the fixed ring 6, it no longer blocks the silencer ring 4, which allows the silencer ring 4 and the noise reduction sponge 5 to be freely disassembled, which makes the disassembly and replacement of parts easy and quick, which not only facilitates users to maintain and replace equipment parts, but also extends the service life of the equipment and reduces the cost of equipment scrapping or repair due to damage or aging.

[0026] Reference Figure 1 , Figure 2 and Figure 4 The outer wall of the earmuff 1 is fixedly connected to a fixing seat 15, and the outer wall of the fixing seat 15 is rotatably connected to a sliding sleeve 16; the interior of the sliding sleeve 16 is fixedly connected to an ear hook 17, and a positioning hole 18 is opened inside the ear hook 17; the outer wall of the ear hook 17 is slidably connected to a headband 19, and the outer wall of the headband 19 is fixedly connected to a fixing sleeve 20; the interior of the fixing sleeve 20 is slidably connected to a sliding rod 21, and the outer wall of the sliding rod 21 is fixedly connected to a pull plate 22; the outer wall of the sliding rod 21 is fixedly connected to a clamping block 23, and the outer wall of the sliding rod 21 is sleeved with a second spring 24; one end of the second spring 24 is fixedly connected to the outer wall of the fixing sleeve 20, and the other end of the second spring 24 is fixedly connected to the outer wall of the pull plate 22;

[0027] Specifically, when the length of the ear hook 17 needs to be adjusted, the pull plate 22 is pulled to drive the slide bar 21 to slide inside the fixed sleeve 20. When the slide bar 21 slides out of one of the pairs of positioning holes 18, the block 23 will limit the position of the slide bar 21 to ensure that it does not completely slide out of the fixed sleeve 20. At the same time, the pull plate 22 stretches the second spring 24, which ensures smooth adjustment. Once the length of the ear hook 17 is adjusted to a suitable position, just release the pull plate 22, and the second spring 24 will pull the pull plate 22 back until the slide bar 21 is inserted into the corresponding positioning hole 18. This is not only convenient and quick, but also ensures the stability of the adjustment, thereby improving the adjustability and flexibility of the communication noise reduction device, allowing users to freely adjust the length of the ear hook 17 according to personal preferences and needs, thereby providing a more comfortable and fitting use experience.

[0028] Working principle: When the silencer ring 4 and the noise reduction sponge 5 need to be disassembled and replaced, the internal movable ring 10 is driven to rotate by rotating the swivel ring 12, so that the limit block 9 can slide in the limit groove 11 and pull the baffle 7 at the same time, so that the baffle 7 can slide in the fixed ring 6, and at the same time compress the first spring 8, wherein the first spring 8 can push the baffle 7 back to reset. When the baffle 7 completely slides into the fixed ring 6, it no longer blocks the silencer ring 4, and then the shell 14 and the positioning rod 13 are pulled out from the fixed ring 6, so as to achieve the effect of disassembling the internal components of the device, thereby improving the convenience of the communication noise reduction device and extending the service life of the device. When the ear hook 1 is needed When the length of the ear hook 17 is adjusted, the pull plate 22 is pulled to drive the slide bar 21 to slide inside the fixed sleeve 20. At the same time, the pull plate 22 will also stretch the second spring 24 until the slide bar 21 slides out of one of the pairs of positioning holes 18, and the block 23 can limit the position of the slide bar 21 to prevent the slide bar 21 from sliding out of the fixed sleeve 20. Then, by adjusting the length of the ear hook 17 inside the headband 19, when the length is appropriate, the pull plate 22 is loosened, so that the second spring 24 pulls the pull plate 22 back until the slide bar 21 is inserted into the corresponding positioning hole 18, thereby achieving the effect of adjusting the length of the ear hooks 17 on both sides of the device, improving the adjustability of the communication noise reduction device, and expanding the scope of application of the device.

[0029] Finally, it should be noted that the above 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 aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A communication noise reduction device based on improved Kalman filtering, comprising an earmuff (1), characterized in that: The outer wall of the earmuff (1) is fixedly connected with a sponge pad (2), the interior of the earmuff (1) is fixedly connected with a dustproof net (3), the interior of the earmuff (1) is slidably connected with a silencer ring (4), the interior of the silencer ring (4) is fixedly connected with noise reduction sponge (5), the outer wall of the earmuff (1) is fixedly connected with a fixing ring (6), the interior of the fixing ring (6) is slidably connected with a baffle (7), a first spring (8) is arranged inside the fixing ring (6), one end of the first spring (8) is fixedly connected to the fixing ring (6) and the first spring (8) is fixedly connected to the fixing ring (6). The other end of the first spring (8) is fixedly connected to the outer wall of the baffle (7), the outer wall of the baffle (7) is fixedly connected to a limit block (9), the outer wall of the limit block (9) is slidably connected to a movable ring (10), a limit groove (11) is provided inside the movable ring (10), the outer wall of the limit block (9) is slidably connected to the inside of the limit groove (11), the outer wall of the movable ring (10) is fixedly connected to a swivel (12), and a protective component is arranged inside the fixed ring (6).

2. A communication noise reduction device based on improved Kalman filtering according to claim 1, characterized in that: The protection component comprises a positioning rod (13), the outer wall of the positioning rod (13) is slidably connected to the interior of the fixing ring (6), and the outer wall of the positioning rod (13) is fixedly connected to a housing (14).

3. A communication noise reduction device based on improved Kalman filtering according to claim 2, characterized in that: The outer wall of the earmuff (1) is fixedly connected to a fixing seat (15), and the outer wall of the fixing seat (15) is rotatably connected to a sliding sleeve (16).

4. The communication noise reduction device based on improved Kalman filtering according to claim 3, characterized in that: An ear hook (17) is fixedly connected to the interior of the sliding sleeve (16), and a positioning hole (18) is provided inside the ear hook (17).

5. The communication noise reduction device based on improved Kalman filtering according to claim 4, characterized in that: The outer wall of the ear hook (17) is slidably connected to a headband (19), and the outer wall of the headband (19) is fixedly connected to a fixing sleeve (20).

6. The communication noise reduction device based on improved Kalman filtering according to claim 5, characterized in that: The interior of the fixed sleeve (20) is slidably connected to a sliding rod (21), and the outer wall of the sliding rod (21) is fixedly connected to a pulling plate (22).

7. The communication noise reduction device based on improved Kalman filtering according to claim 6, characterized in that: A clamping block (23) is fixedly connected to the outer wall of the slide rod (21), and a second spring (24) is sleeved on the outer wall of the slide rod (21).

8. The communication noise reduction device based on improved Kalman filtering according to claim 7, characterized in that: One end of the second spring (24) is fixedly connected to the outer wall of the fixing sleeve (20), and the other end of the second spring (24) is fixedly connected to the outer wall of the pulling plate (22).

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