Sound reducing box and equipment sound testing system

Abstract

According to the sound reducing box and the equipment sound testing system, the sound reducing box comprises a box body and an equipment cabin connected with the box body, the box body is used for providing a measuring environment isolated from the outside for tested equipment, the box body comprises an inner plate unit and an outer plate unit, the inner plate unit is fixedly connected with the outer plate unit, and the periphery of the outer plate unit surrounds the inner plate unit; a plurality of holes are formed in the inner plate unit, the distance between every two adjacent holes is a first numerical value, a first silencing material is arranged on the inner surface of the inner plate unit, and the equipment cabin is used for providing a containing space for tested equipment. According to the technical scheme, the inner plate unit, the outer plate unit and the first silencing material are arranged in the silencing box to form the sound absorption layer and the sound insulation layer, noise of different frequencies can be effectively absorbed and blocked, and the sound absorption and silencing performance of the silencing box is improved.

Description

Technical Field

[0001] The present application relates to the field of information technology, and in particular to a sound-absorbing box and a device sound testing system. Background Art

[0002] At present, sound insulation boxes are widely used in industrial facilities, automobiles, audio equipment and other technical fields. Sound insulation boxes can be divided into acoustic sound insulation boxes, sound insulation boxes, engineering sound insulation boxes, special sound insulation boxes and other types. Different types of sound insulation boxes use different materials and structures to reduce the noise level in the environment, reduce echo and reverberation, make the sound clearer and more natural, prevent external noise from entering the internal space, and keep the environment quiet.

[0003] However, in order to ensure high-quality sound-absorbing effects, current sound-absorbing boxes usually use sound-absorbing materials and complex structures to reduce noise, which leads to technical problems such as limited sound-absorbing effects and high costs.

[0004] Therefore, how to design a sound-absorbing box with simple structure, low cost and significant sound-absorbing effect has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] The embodiments of the present application provide a sound absorbing box and a device sound testing system to solve the problems in the prior art regarding how to design a sound absorbing box with a simple structure, low cost and significant sound absorbing effect.

[0006] In a first aspect, an embodiment of the application provides a sound-absorbing box, comprising: a box body, an equipment cabin connected to the box body;

[0007] The box is used to provide a measurement environment isolated from the outside world for the device under test, and the box includes an inner plate unit and an outer plate unit fixedly connected to the inner plate unit and surrounding the inner plate unit. The inner plate unit is provided with a plurality of holes, and the distance between adjacent holes is a first value. The inner surface of the inner plate unit is provided with a first sound-absorbing material.

[0008] The equipment compartment is used to provide a storage space for the device under test.

[0009] In a possible implementation, the inner plate unit includes: two first plates arranged in parallel, and two second plates arranged between the two first plates and parallel to each other;

[0010] The two first plates and the two second plates are respectively provided with holes, and the distance between the holes on the same plate is a first value;

[0011] The first sound-absorbing material is provided on the inner surface surrounded by the two first plates and the two second plates.

[0012] In a possible implementation, the outer panel unit is a cube formed by a plurality of third panels;

[0013] A second sound-absorbing material is provided on the inner surface of the outer panel unit, and the distance between the second sound-absorbing material and the outer surface surrounded by each first panel and each second panel is a first preset distance.

[0014] In a possible implementation, two adjacent third plates are bonded together using a sealing material, and the joints are connected using a wedge.

[0015] In a possible implementation, the equipment cabin includes: a cabin body and an audio collection unit;

[0016] The cabin is used to place the device under test, and the audio collection unit is used to collect audio from the device under test and transmit it to the audio analysis device.

[0017] In a possible implementation, the thickness of the third plate is greater than that of the first plate, and the thickness of the first plate is consistent with the thickness of the second plate.

[0018] In a possible implementation, the first value is 40 mm;

[0019] The first sound-absorbing material is glass wool sealed with gauze; the second sound-absorbing material is porous glass fiber.

[0020] In a possible implementation, wheels are provided at the bottom of the muffler box.

[0021] In a possible implementation, a first panel is provided on the outer panel unit;

[0022] The first panel and the outer panel unit are connected via a shaft.

[0023] In a second aspect, an embodiment of the present application provides a device sound testing system, comprising: the sound absorbing box, the device under test, and the audio analysis device involved in the above-mentioned first aspect and various embodiments.

[0024] The present invention provides a sound-absorbing box and a device sound testing system, comprising: a box body including an inner panel unit, an outer panel unit fixedly connected to and surrounding the inner panel unit, the inner panel unit being provided with a plurality of holes, the distance between adjacent holes being a first value, a first sound-absorbing material provided on the inner surface of the inner panel unit, and an equipment compartment for providing accommodation for the device under test. In this technical solution, by providing the inner panel unit, the outer panel unit, and the first sound-absorbing material within the sound-absorbing box to form a sound-absorbing layer and a sound-insulating layer, the sound-absorbing and sound-isolating layer can be effectively absorbed and blocked, thereby improving the sound-absorbing and sound-isolating performance of the sound-absorbing box.

[0025] In addition to the technical problems solved by the embodiments of the present application, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the silencer provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 A schematic diagram of the structure of a sound-absorbing box provided in an embodiment of the present application Figure 1 ;

[0028] Figure 2 A schematic top view of the box structure of a sound-absorbing box provided in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of the structure of a sound-absorbing box provided in an embodiment of the present application Figure 2 ;

[0030] Figure 4 A schematic diagram of the structure of a sound-absorbing box provided in an embodiment of the present application Figure 3 ;

[0031] Figure 5 A schematic diagram of a device sound testing system provided in an embodiment of the present application.

[0032] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concepts of the present disclosure to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0034] Before introducing the embodiments of the present application, the application background of the embodiments of the present application is first explained:

[0035] At present, sound insulation boxes are widely used in industrial facilities, automobiles, audio equipment and other technical fields. Sound insulation boxes can be divided into acoustic sound insulation boxes, sound insulation boxes, engineering sound insulation boxes, special sound insulation boxes and other types. Different types of sound insulation boxes use different materials and structures to reduce the noise level in the environment, reduce echo and reverberation, make the sound clearer and more natural, prevent external noise from entering the internal space, and keep the environment quiet.

[0036] Acoustic soundproofing boxes are typically made of high-density acoustic foam, mineral wool, and fiber materials. They can reduce indoor sound reverberation and reflection and have excellent acoustic absorption properties. Soundproofing boxes are typically sealed structures used to isolate sound and are suitable for environments requiring high sound insulation performance. Engineering soundproofing boxes are specifically designed for industrial environments, such as machine tools and generator sets, and are designed to withstand high temperatures, vibrations, and reduce mechanical noise. Specialized soundproofing boxes mainly include medical soundproofing boxes and laboratory soundproofing boxes, which are used in hospitals and scientific research laboratories to reduce the impact of equipment noise on patients and experimental data.

[0037] However, in order to ensure high-quality sound-absorbing effects, current sound-absorbing boxes usually use stacking multiple sound-absorbing materials to reduce noise, which causes the structure of the sound-absorbing boxes to become increasingly complex. This leads to technical problems such as limited sound-absorbing effects and high costs of the sound-absorbing boxes.

[0038] In response to the technical problems existing in the prior art, the inventors of this application have the following idea: a sound-absorbing layer is formed by porous glass fiber wool and mesh-sealed glass wool in the sound-absorbing box, an inner sound insulation layer and an outer sound insulation layer are formed by core boards of different thicknesses, and gaps are set between the sound insulation layer and the sound-absorbing layer. At the same time, sealant is used to bond the surface of the outer panel, and a wedge is used to connect the joint of the outer panel and the inner panel. This can effectively ensure the sealing of the sound-absorbing box, so that the sound-absorbing box can absorb and block noise of different frequencies, thereby achieving a high-efficiency sound-absorbing effect while reducing manufacturing costs.

[0039] The technical solution of the present application is described in detail below through specific embodiments. It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0040] Figure 1 A schematic diagram of the structure of a sound-absorbing box provided in an embodiment of the present application Figure 1 ,like Figure 1 As shown, the muffler box may include: a box body 11, and an equipment compartment 12 connected to the box body;

[0041] Optionally, the box 11 is used to provide a measurement environment isolated from the outside world for the device under test, and the box includes: an inner panel unit 112, an outer panel unit 111 fixedly connected to the inner panel unit 112 and surrounding the inner panel unit 112, the inner panel unit 112 is provided with a plurality of holes 1121, the distance between adjacent holes 1121 is a first value, and the inner surface of the inner panel unit is provided with a first sound-absorbing material 113;

[0042] In this implementation, if Figure 1 As shown, the dashed rectangle corresponds to a top view of the enclosure. The inner panel unit 112 is the portion indicated by the thick black solid line, while the outer panel unit 111 is the portion indicated by the diagonal hatching. The inner panel unit 112 is located within the soundproofing enclosure, absorbing sound and reducing echo and resonance while also increasing the overall structural strength of the enclosure and preventing vibration and deformation. The outer panel unit 111 is located outside the inner panel unit 112, surrounding it on all sides and being fixedly connected to it.

[0043] Furthermore, the inner panel unit 112 includes: two first panels 1122 arranged in parallel, and two second panels 1123 arranged parallel to each other between the two first panels; holes 1121 are respectively provided on the two first panels 1122 and the two second panels 1123, and the distance between the holes 1121 on the same panel is a first value; and a first sound-absorbing material is provided on the inner surface surrounded by the two first panels 1122 and the two second panels 1123.

[0044] In this implementation, the first plate 1122 and the second plate 1123 are arranged in parallel to form the integral inner plate unit 112. This structure can increase the stability of the muffler box and prevent the muffler box from being deformed due to external shaking or other external forces.

[0045] The inner panel unit 112 may be a core panel with a thickness of 20 mm.

[0046] Specifically, core board usually refers to a medium-density fiberboard or particleboard, which is mainly made of large wood particles or fibers. It is generally thicker, stronger, and has good stability. Core board has the advantages of simple processing, economical and environmentally friendly.

[0047] Optionally, a plurality of holes 1121 are provided on the inner plate unit, and the distance between adjacent holes 1121 is a first value;

[0048] In this implementation, multiple holes 1121 are provided on the inner panel unit 113. These holes 1121 help regulate the propagation of sound waves, reduce resonance and echo, promote air circulation, prevent overheating of internal equipment, reduce the weight of the inner panel, lower the overall burden, optimize sound diffusion and mixing, and improve sound quality. Maintaining a certain distance between adjacent holes 1121 prevents sound resonance, ensures even sound propagation within the cabinet, and enhances sound quality.

[0049] The distances from the holes to the edges of the first plate 1122 and the second plate 1123 are first values, and the horizontal distance or the vertical distance between two adjacent holes are both first values.

[0050] Optionally, the inner surface of the inner panel unit is provided with a first sound-absorbing material 113 .

[0051] In this implementation, providing a sound-absorbing material on the inner surface of the inner panel unit 112 can reduce sound wave reflection, reduce noise, suppress unnecessary audio frequencies, improve sound quality, improve the acoustic environment, and enhance the sound insulation effect.

[0052] Furthermore, the first value is 40 mm; the first sound-absorbing material 113 is glass wool sealed with gauze; and the second sound-absorbing material is porous glass fiber.

[0053] Gauze-sealed glass wool can effectively reduce noise transmission and enhance indoor comfort; prevent heat loss or ingress, improve energy efficiency, and reduce energy consumption; and possesses certain fire resistance properties, enhancing building safety. Furthermore, glass wool is lightweight, easy to install and handle, provides excellent sound insulation, absorbs both high- and low-frequency noise, is corrosion-resistant, and is economical and environmentally friendly, making it suitable for large-scale use.

[0054] In addition, porous glass fiber is a material with good air permeability and sound insulation properties. It is lighter than traditional materials and easier to transport and install. The porous structure can effectively absorb sound waves, reduce noise, has good thermal insulation properties, and improves energy efficiency. It is not easily affected by moisture and corrosion and can maintain its performance for a long time. It is non-toxic, recyclable, and meets environmental protection requirements.

[0055] In this implementation, if Figure 1 As shown, the size of holes 1121 can be 5 mm, and the distance between adjacent holes 1121 is 40 mm. Setting 40 mm can maintain sufficient material strength and avoid local deformation. A first sound-absorbing material 113 is provided on the inner and outer surfaces of the inner panel unit 112. The first sound-absorbing material 113 is glass wool sealed with gauze. The second sound-absorbing material is porous glass fiber. Using different sound-absorbing materials can combine the advantages of the two different sound-absorbing materials to improve the overall sound absorption and noise reduction performance of the sound-absorbing box.

[0056] Optionally, the equipment compartment is used to provide accommodation space for the device under test.

[0057] Need to explain, Figure 1 The connection method between the box body 11 and the equipment cabin is up and down connection. In actual application, the connection method can also be left and right connection and inclined connection to adapt to the layout requirements of different scenarios. The connection method can be selected according to actual application requirements to optimize the overall structure and performance of the silencer box.

[0058] Furthermore, the equipment cabin includes: a cabin body and an audio collection unit;

[0059] The cabin is used to place the device under test, and the audio acquisition unit is used to collect the audio of the device under test and transmit it to the audio analysis device.

[0060] In this implementation, the device under test is placed in a cabin, providing a suitable working environment for the device under test. The audio acquisition unit placed in the cabin can effectively collect the position of the sound of the device under test, so as to accurately capture the sound emitted by the device under test, and then transmit the collected sound signal to the external audio analysis device to facilitate the audio analysis device to analyze the sound signal.

[0061] In a possible implementation, a movable partition 16 can be provided between the box body and the equipment compartment to ensure the sealing of the silencer box body.

[0062] Specifically, the audio acquisition unit can be a microphone, an acoustic sensor, or an audio interface. Audio analysis equipment mainly includes spectrum analyzers, real-time spectrum analyzers, sound level meters, and audio analysis software on computers.

[0063] Microphones can capture sounds in the environment, and typically use highly sensitive types, such as condenser microphones. Acoustic sensors are sensors used to measure sound waves and can provide more accurate data. Audio interfaces can convert captured audio signals into digital signals for subsequent analysis. Spectrum analyzers can be used to analyze the frequency components of sound signals, identifying noise sources and their spectral characteristics. Real-time spectrum analyzers can monitor spectral changes in audio signals in real time and are suitable for analyzing dynamic noise environments. Sound level meters are used to measure sound pressure levels to assess sound cancellation and ambient noise. Audio analysis software on a computer can record and analyze audio signals, providing detailed waveform and spectral information.

[0064] In one possible implementation, the audio signal of the device under test in the sound-absorbing box is transmitted to the audio analysis software and the sound level meter on the computer via a microphone. The audio analysis software on the computer performs spectrum analysis on the received audio signal, the sound level meter calculates the sound pressure level and displays it on the screen, and the audio analysis software on the computer displays the audio analysis results.

[0065] The present invention provides a sound-absorbing enclosure and a device sound testing system. The enclosure includes an inner panel unit, an outer panel unit fixedly connected to and surrounding the inner panel unit, the inner panel unit having a plurality of holes, with a first distance between adjacent holes. The inner surface of the inner panel unit is provided with a first sound-absorbing material, and the device compartment is used to provide a storage space for the device under test. In this technical solution, by arranging the inner panel unit, the outer panel unit, and the first sound-absorbing material within the sound-absorbing enclosure to form a sound-absorbing layer and a sound-insulating layer, the sound-absorbing layer can be effectively absorbed and blocked, thereby improving the sound absorption and sound-absorbing performance of the sound-absorbing enclosure.

[0066] Based on the above embodiments, Figure 2 A schematic top view of a sound-absorbing box structure provided in an embodiment of the present application is shown in FIG. Figure 2 As shown, the outer plate unit 111 is a cube composed of a plurality of third plates 1111;

[0067] Optionally, a second sound-absorbing material 114 is provided on the inner surface of the outer panel unit 111 , and the distance between the second sound-absorbing material 114 and the outer surface surrounded by each first plate body 1122 and each second plate body 1123 is a first preset distance.

[0068] In this implementation, the second sound-absorbing material 114 provided on the inner surface of the outer panel unit 111 is porous glass fiber.

[0069] Among them, the thickness of the porous glass fiber can be 135 mm, and it is laid on the six directions of up, down, left, right, front and back of the inner surface of the outer panel unit 111. The first preset distance retained between the second sound-absorbing material 114 and the inner panel unit 112 is 40 mm. A certain gap must be left between the porous glass fiber cotton and the inner panel unit 112, and the principle of gap resonance is used to absorb and silence sound.

[0070] In a possible implementation, the outer panel unit 111 may be a core board with a thickness of 30 mm, and the gap between the porous glass fiber wool and the inner panel unit 112 may be 10 mm.

[0071] Furthermore, two adjacent third plates 1111 are bonded together using a sealing material, and the joints are connected using a wedge.

[0072] In this implementation, a sealing material is used to bond the adjacent third plates 1111 . The sealing material may be silicone sealant, polyurethane sealant, tape sealant, or the like. Different sealing materials may be used according to actual application scenarios.

[0073] Silicone sealants offer excellent elasticity and weather resistance, making them suitable for filling gaps. Polyurethane sealants are strong, water-resistant, and suitable for a variety of environments. Adhesive tape sealants are easy to use and suitable for quick fixing and sealing.

[0074] The use of wedges at the joints of the third plate 1111 can, on the one hand, make it easier to assemble and disassemble the components, making it suitable for on-site installation; on the other hand, it can adjust the degree of connection tightness, which helps to optimize acoustic performance.

[0075] In a possible implementation, wooden wedges are used as connecting wedges between the third plates 1111 .

[0076] Furthermore, the thickness of the third plate body 1111 is greater than that of the first plate body 1122 , and the thickness of the first plate body 1122 is consistent with the thickness of the second plate body 1123 .

[0077] In this implementation, the thickness of the third plate body 1111 constituting the outer plate unit 111 is greater than the thickness of the plate body constituting the inner plate unit, and the thickness of the first plate body 1122 and the second plate body 1123 constituting the inner plate unit 112 are the same.

[0078] Furthermore, Figure 3 A schematic diagram of the structure of a sound-absorbing box provided in an embodiment of the present application Figure 2 ,like Figure 3 As shown, wheels 13 are provided at the bottom of the muffler box.

[0079] In this implementation, Figure 3 is based on Figure 1 On the basis of the above, wheels 13 are provided at the bottom of the muffler box, that is, at the lower part of the equipment compartment 12, which can facilitate the movement of the entire muffler box, making the use of the muffler box more convenient. In fact, based on the different connection methods of the box body 11 and the equipment compartment 12, the position of the wheels is also different. The wheels 13 can be provided at the lower part of the box body 11 or the lower part of the equipment compartment 12 according to the actual application scenario.

[0080] Among them, wheel 13 can be fixed wheel, rotating wheel, brake wheel, detachable wheel etc. When selecting wheel, need consider the weight of muffler box and use environment.

[0081] Specifically, fixed wheels are installed on the bottom of the silencer box, providing basic mobility and suitable for situations where frequent movement is not required. Swivel wheels allow the silencer box to be flexibly moved in multiple directions and are suitable for situations where frequent position adjustments are required. Braking wheels have a braking function to ensure stability during use and prevent accidental sliding. Removable wheels can be easily removed when the silencer box is not needed to maintain stability.

[0082] Furthermore, Figure 4 A schematic diagram of the structure of a sound-absorbing box provided in an embodiment of the present application Figure 3 A first panel 14 is provided on the outer panel unit; the first panel 14 is connected to the outer panel unit via a shaft 15.

[0083] In this implementation, a door (i.e., first panel 14) is provided in the outer panel unit of the enclosure to facilitate the entry and exit of the device under test into the silencer. Operators can use the door to place the device under test through the enclosure into the equipment compartment and perform equipment commissioning and maintenance. The door is connected to the outer panel unit via a shaft 15.

[0084] The shaft 15 may be a hinge, a hinge or a buckle, and different shafts may be selected according to the actual application scenario.

[0085] Specifically, a hinge is a common door axis that allows the door to rotate at a fixed point, making it easy to open and close. It is suitable for applications where frequent entry and exit are required. A hinge is similar to a hinge, but may have a more sophisticated design, suitable for different styles of door. A buckle allows for easy removal and installation, suitable for situations requiring regular maintenance.

[0086] The present invention provides a sound-absorbing enclosure in which an outer panel unit is a cube formed of multiple third panels. A second sound-absorbing material is provided on the inner surface of the outer panel unit, and the distance between the second sound-absorbing material and the outer surface defined by each of the first and second panels is a first predetermined distance. This technical solution utilizes porous fiberglass wool on the inner surface of the outer panel unit while maintaining a gap between the porous fiberglass wool and the inner panel unit. This allows for sound absorption and silencing through the resonance of micropores and gaps, thereby improving the sound absorption performance of the sound-absorbing enclosure.

[0087] In one possible implementation, the size of the silencer box can be designed to be 1320 mm in length, 1430 mm in width, and 1200 mm in height, the box body size can be 1320 mm in length, 1430 mm in width, and 800 mm in height, and the equipment cabin size can be 1320 mm in length, 1430 mm in width, and 400 mm in height.

[0088] Based on the above embodiments, Figure 5 A schematic diagram of a device sound testing system provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, the device includes: a silencer box 21, a device under test 22, and an audio analysis device 23.

[0089] The functions and effects of the components in the device sound test system are as shown in the above embodiments and will not be described again here.

[0090] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0091] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A soundproof box, characterized in that: include: A box body and an equipment cabin connected to the box body; The box is used to provide a measurement environment isolated from the outside world for the device under test, and the box includes an inner plate unit and an outer plate unit fixedly connected to the inner plate unit and surrounding the inner plate unit. The inner plate unit is provided with a plurality of holes, and the distance between adjacent holes is a first value. The inner surface of the inner plate unit is provided with a first sound-absorbing material. The equipment compartment is used to provide a storage space for the device under test.

2. The sound-absorbing box according to claim 1, characterized in that: The inner plate unit comprises: two first plates arranged in parallel, and two second plates arranged between the two first plates and parallel to each other; The two first plates and the two second plates are respectively provided with holes, and the distance between the holes on the same plate is a first value; The first sound-absorbing material is provided on the inner surface surrounded by the two first plates and the two second plates.

3. The sound-absorbing box according to claim 2, characterized in that: The outer plate unit is a cube composed of multiple third plates; A second sound-absorbing material is provided on the inner surface of the outer panel unit, and the distance between the second sound-absorbing material and the outer surface surrounded by each first panel and each second panel is a first preset distance.

4. The sound-absorbing box according to claim 3, characterized in that: Two adjacent third plates are bonded together by using sealing materials, and the joints are connected by using wedges.

5. The sound-absorbing box according to any one of claims 1 to 4, characterized in that: The equipment cabin comprises: a cabin body and an audio collection unit; The cabin is used to place the device under test, and the audio collection unit is used to collect audio from the device under test and transmit it to the audio analysis device.

6. The sound-absorbing box according to claim 3 or 4, characterized in that: The thickness of the third plate is greater than that of the first plate, and the thickness of the first plate is consistent with the thickness of the second plate.

7. The sound-absorbing box according to any one of claims 3 or 4, characterized in that: The first value is 40 mm; The first sound-absorbing material is glass wool sealed with gauze; the second sound-absorbing material is porous glass fiber.

8. The sound-absorbing box according to any one of claims 1 to 4, characterized in that: The bottom of the muffler box is provided with wheels.

9. The sound-absorbing box according to any one of claims 1 to 4, characterized in that: The outer panel unit is provided with a first panel; The first panel and the outer panel unit are connected via a shaft.

10. A device sound testing system, characterized in that: include: The silencing box, the device under test, and the audio analysis device according to any one of claims 1 to 9.

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