Ceramic sand diatomaceous earth coating, method and wall material structure for indoor audio-visual environment adjustment

Abstract

The invention discloses a ceramic sand diatomite coating for indoor audio-visual environment regulation, which is a paste prepared from the following components in weight proportion: 10-40 lightweight sintered ceramic sand; 15-35 diatomite; 8-15 calcium carbonate; 2-12 sepiolite; 10-30 quartz sand; 5-12 additives; 0.01-0.5 mineral pigments; 100-150 water; after the coating is dried after construction, a specific reflection surface or action surface is formed on the wall. The invention also provides an indoor audio-visual environment regulation method and a wall material structure. The invention focuses on using a specific component formula and a surface treatment process to form a specific indoor sound and light regulation wall material reflection surface or action surface; after a one-time design, construction and testing, the regulation of indoor sound, light, temperature and humidity and other environmental factors can be achieved; the coating is healthy, environmentally friendly, pollution-free, simple in construction process, flexible in design, low in cost, and easy to use on a large area.

Description

Technical Field

[0001] The invention relates to the technical field of indoor environmentally friendly functional materials, and in particular to a ceramic sand diatomaceous earth coating, a method and a wall material structure specially used for adjusting indoor audio-visual environment. Background Art

[0002] With the acceleration of urbanization, urban noise and light pollution have long become a major public hazard to the urban environment. In addition, with the continuous improvement of people's living standards, people have put forward higher and higher requirements for living environment. How to create a more comfortable indoor living and audio-visual environment for people has become one of the hot topics in the field of engineering construction and environmentally friendly building materials.

[0003] In the existing technology, in order to obtain good indoor audio-visual effects, in addition to good audio and video playback equipment, a good audio-visual environment is also required. If the acoustic and optical conditions of the living room or room are very poor, then no matter how good or expensive the equipment is, it will be of no use. Therefore, the indoor audio-visual environment must be transformed.

[0004] At present, there are more and more indoor spaces that need special acoustic and optical treatment, including theaters, concert halls, museums, exhibition halls, libraries, interrogation rooms, galleries, auction halls, gymnasiums, lecture halls, multi-function halls, hotel lobbies, hospitals, shopping malls, schools, piano rooms, conference rooms, studios, recording studios, KTV rooms, bars, industrial plants, computer rooms, home audio-visual rooms (audio-visual rooms), etc. In these indoor noise control projects, sound-absorbing decorative panels and sound-absorbing cotton are often used. These are mostly plate-shaped components made of porous materials with sound-absorbing and noise-reducing effects. These places with high requirements for acoustic and optical environments and high-end decoration currently require special surveys, designs and constructions, as well as the use of special components such as sound-absorbing decorative panels and sound-absorbing cottons. However, their design and construction requirements are complex and costly, which is not conducive to large-scale promotion and use, and is prone to fire safety, indoor air pollution, and the breeding of bacteria and bedbugs.

[0005] For indoor acoustic treatment, in theory, although any material can absorb and reflect sound, the degree of absorption and reflection is very different. The sound absorption coefficient refers to the percentage of energy absorbed when the sound wave is incident on the surface of an object and reflected, which is expressed by a (a = 0.0 ~ 1.0). The arithmetic mean (average sound absorption number) of the sound absorption coefficient at the center frequency of the six octaves of 125, 250, 500, 1000, 2000 and 4000HZ is usually used to express the sound absorption capacity of the material. Usually, materials with an average sound absorption coefficient greater than 0.2 for the six conventional frequencies are classified as sound-absorbing materials. Sound originates from the vibration of an object, which causes the vibration of the adjacent air to form sound waves and propagate around in the air medium. When sound is transmitted to the surface of a component material, part of the sound energy is reflected, part of it penetrates the material, and part of it is converted from sound energy into heat energy due to the vibration of the component material or the friction between the sound and the surrounding medium when it propagates in it, and the sound energy is lost, which is usually said to be absorbed by the material. Therefore, most sound-absorbing materials are loose and porous materials. The sound absorption mechanism is that sound waves penetrate into the pores of the material, and the pores are mostly open holes that are interconnected. The friction and viscosity resistance of air molecules, as well as the mechanical vibration of fine fibers, convert the sound energy into heat energy. To improve the indoor sound field, not only the sound absorption effect should be considered, but also the sound reflection and scattering, so as to achieve a clear and accurate indoor sound field effect.

[0006] In the prior art, for places such as theaters, home audio-visual rooms, concert halls, studios, and high-end residences, people often focus on the treatment and improvement of the acoustic environment, while ignoring the comprehensive treatment and improvement of optics, temperature and humidity, and other factors that affect audio and video effects and human perception. When these aspects are treated and improved separately, they often need to be measured, analyzed, designed, constructed, and accepted separately, and often require the use of different equipment, materials, components, construction personnel, and multiple constructions, which greatly increases the complexity of its measurement, materials, equipment, design, and construction, and is costly, which is not conducive to large-scale promotion and application.

[0007] The diatomite wall material in the prior art, such as the diatomite wall material disclosed in Chinese invention patent 201110216947.2, is made of diatomite: 20-40%, shell powder: 20-48%, diatomite sand: 10-25%, walnut shell particles: 5-10%, zeolite powder: 10-25%, bentonite: 1-8%, bamboo powder: 1-5%, seaweed glue: 0.5-3%, cellulose ether: 0.1-0.4%, wherein the particle size of the diatomite sand is less than 0.5mm, and the invention can greatly improve the thermal insulation and moisture-proof and fire-proof effects of the diatomite wall material, and achieve the effects of no volatilization, zero emission, zero pollution, compliance with the requirements of circular economy, and low carbon and environmental protection. However, it does not consider and have the effects of indoor acoustic and optical adjustment.

[0008] In the prior art, the basic requirements for the environment of indoor audio-visual spaces such as home theaters and cinemas are "dark, empty, and quiet". "Empty" means that except for necessary supplies and seats, other things should not be placed in the room as much as possible. In this way, the net space of the room can be expanded under the condition of limited room volume, which is convenient for creating a grand sound field and avoiding interference with the viewer's sight. "Quiet" means that the invasion of various sounds or noises from the outdoors should be isolated as much as possible, and at the same time, no irrelevant noises should appear in the room to avoid interfering with the sound effect, so as to ensure that the viewer can fully concentrate on enjoying the movie. Among them, "empty" and "quiet" are mainly for the listening environment, while "dark" is for the lighting environment. A dark environment is conducive to reproducing the details and bright colors of the image under low brightness conditions. If the indoor environment is too bright, the brightness and color saturation of the color have to be adjusted to a large value, which has a certain impact on the clarity and contrast of the projected image, and the image will lose its sense of hierarchy and expressiveness. Therefore, indoor lighting must also be reasonably designed and adjusted.

[0009] The existing indoor audio-visual environment adjustment construction needs to go through multiple rounds of design, construction and testing to achieve the desired environmental adjustment effect. In addition, the current audio-visual environment adjustment construction still uses a large number of soft bags, foams, organic coatings and other products, causing indoor environmental pollution.

[0010] For the audience, the temperature and humidity of the indoor audio-visual environment are also an important factor affecting the experience. Only in a relatively comfortable environment can they get a more focused and better audio-visual experience. In the existing technology, these are adjusted separately and lack effective integration. Summary of the invention

[0011] The purpose of the present invention is to provide a ceramic sand diatomaceous earth coating, method and wall material structure for indoor audio-visual environment adjustment with high integration and low cost in view of the shortcomings of the prior art.

[0012] The present invention focuses on forming a reflective surface with different strengths, positions and areas by setting it on the inner side of the wall, using special ceramic sand diatomaceous earth coating and specific wall material structure and surface texture, so as to achieve comprehensive regulation of indoor sound, light, temperature and humidity environment, so as to greatly enhance the audience's audio-visual experience, while overcoming the current need to use multiple materials, multiple designs, multiple constructions, especially the use of a large amount of foam and other materials to cause indoor environmental pollution, as well as high cost and poor synergy effect.

[0013] In order to achieve the above object, the present invention provides the following technical solutions:

[0014] A ceramic sand diatomaceous earth coating specially used for adjusting indoor audio-visual environment, characterized in that it is a paste prepared from the following components in parts by weight:

[0015] Lightweight sintered ceramic sand 10-40; diatomaceous earth 15-35; calcium carbonate 8-15; sepiolite 2-12; quartz sand 10-30; additives 5-12; mineral pigments 0.01-0.5; water: 100-150; wherein the lightweight sintered ceramic sand is a through-hole ceramic particle sintered at a high temperature, including fine particles with a particle size of 1-2mm and coarse particles with a particle size of 2-4mm; after construction and drying, the coating forms a specific reflective surface or action surface on the wall.

[0016] A method for adjusting indoor audio-visual environment using the above-mentioned special ceramic sand diatomaceous earth coating is characterized in that it includes the following acoustic adjustment steps:

[0017] (1) preparing a special ceramic sand diatomite coating with specific properties, wherein the coating comprises a through-hole through-type lightweight sintered ceramic sand with a particle size of 1-4 mm as an aggregate;

[0018] (2) Measure the three-dimensional shape, structure and ambient noise level of the interior wall space, and the layout of the indoor audio equipment, and thereby determine the local area and parameters for adjusting the sound field performance;

[0019] (3) According to the local areas and parameters of the above-mentioned sound field performance adjustment, the corresponding special ceramic sand diatomaceous earth coating is selected, and the wall material structure, overall thickness and surface texture characteristics required to construct the reflective surface of each local area of ​​the wall are calculated, and a construction plan is formulated;

[0020] (4) Construction is carried out according to the above construction plan, and after drying, a wall material structure layer of the reflective surface of each local area of ​​the wall is obtained;

[0021] (5) The reflective surfaces of local areas of each wall interact with indoor and outdoor environmental factors to perform acoustic adjustments to obtain predetermined absorption, reflectivity and scattering rates, thereby achieving an indoor sound field effect with sound insulation, clear sound and accurate positioning.

[0022] The indoor audio-visual environment adjustment method of the special ceramic sand diatomaceous earth coating is characterized in that it also includes the following acoustic adjustment steps for simulating a grand spatial sound field:

[0023] (11) preparing a special ceramic sand diatomaceous earth coating with specific properties, and determining the specific content of lightweight sintered ceramic sand in the material based on the sound reflection, diffusion and absorption rate in the three-dimensional space to be obtained;

[0024] (21) Measure the three-dimensional shape of the interior wall space and the layout of the indoor audio equipment, and thereby determine the local area and parameters for adjusting the sound field performance; 2)

[0025] (31) According to the local areas and parameters of the above-mentioned sound field performance adjustment, select the corresponding special ceramic sand diatomaceous earth coating, and calculate the position, size, wall material structure, overall thickness and surface texture characteristics of the local reflective surface of the wall in the front, back, left, right and upper parts of the auditorium, and formulate a construction plan;

[0026] (41) According to the above construction plan, after drying, the wall material structure layer of the reflective surface of each local area of ​​the wall is obtained;

[0027] (51) The reflective surfaces in local areas of each wall adjust the indoor sound field elements through their location, area size, and wall material structure layer to create a spatial stereo field and obtain the predetermined absorption rate, reflectivity, and scattering rate. Each reflective surface controls the intensity, position, and reverberation delay of sound absorption, reflection, and scattering to jointly simulate the stereo field effect of a large space.

[0028] The indoor audio-visual environment adjustment method is characterized in that it also includes the following optical adjustment steps:

[0029] (12) preparing a special ceramic sand diatomaceous earth coating with specific properties, and determining the content of light sintered ceramic sand and the color temperature of the mineral pigment in the material based on the optical reflection, diffusion and absorption rate in the three-dimensional space to be obtained;

[0030] (22) Measure the three-dimensional shape, structure, ambient color temperature and light intensity of the interior wall space, the layout of the indoor lighting and video display equipment, and thereby determine the target parameters for adjusting the performance of the light field;

[0031] (32) adjusting the target parameters according to the above light field performance, selecting a special ceramic sand diatomaceous earth coating with corresponding parameters, and calculating the wall material structure, overall thickness and surface texture characteristics of the reflective surface of each local area of ​​the wall, and formulating a construction plan;

[0032] (42) According to the above construction plan, after drying, a wall material structure layer of the reflective surface of each local area of ​​the wall is obtained;

[0033] (52) The wall material structure layer of the reflective surface of each local area of ​​the wall interacts with indoor and outdoor environmental factors to perform optical adjustments to obtain the predetermined absorption rate, reflectivity and scattering rate, thereby achieving a viewing effect with distinct color levels and natural transition between movement and stillness.

[0034] The indoor audio-visual environment adjustment method is characterized in that it also includes the following temperature and humidity adjustment steps:

[0035] (23) Measure the three-dimensional shape, structure, ambient temperature and humidity of the indoor wall space, and the layout of the indoor temperature and humidity control equipment, and thereby determine the target parameters for temperature and humidity performance adjustment;

[0036] (33) Adjust the target parameters according to the above temperature and humidity performance, select the special ceramic sand diatomaceous earth coating with corresponding parameters, calculate the wall material structure, overall thickness and surface texture characteristics of the local area of ​​each wall, and formulate a construction plan;

[0037] (43) Construction is carried out according to the above construction plan, and after drying, the working surface of each local area of ​​the wall is obtained;

[0038] (53) The wall material structure layer of the local area of ​​each wall interacts with the indoor temperature 35 and humidity control equipment to adjust the temperature and humidity so that the indoor temperature is within the range of 18-25°C and the humidity is within the range of 45-65%RH.

[0039] The indoor audio-visual environment adjustment method is characterized in that the performance adjustment target parameters include the following parameters of the reflective surface or the active surface wall material structure layer: adjustment intensity grading, material composition, position, shape and area, structure layer thickness, surface texture and roughness, and surface color temperature characteristic parameters.

[0040] The adjustment intensity in the performance adjustment target parameter is divided into four levels of strong, medium, low and weak to design the reflective surface or action surface of the local area. The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the reflective surface or action surface are different. The corresponding change rules from strong to weak are as follows: the content of lightweight sintered ceramic sand contained in the wall material structure layer decreases successively, the thickness of the formed wall material decreases successively, the surface concave-convex height and roughness decrease successively, and the color temperature of the surface color decreases successively.

[0041] A wall material structure for implementing the aforementioned indoor audio-visual environment adjustment method, characterized in that the wall material structure layer includes a base layer, a surface layer and a concave-convex texture, the base layer is arranged on the inner surface of the wall, the surface layer is arranged on the base layer, and the concave-convex texture is arranged on the surface layer; the wall material structure layer corresponds to different strengths and other performance adjustment target parameters through the material composition, thickness and surface texture characteristics of the base layer, the surface layer and the concave-convex texture, respectively, to form a reflection surface or action surface with different adjustment intensities on a set local area of ​​the wall.

[0042] The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the emphasized joint reflective surface are as follows: the proportion of lightweight sintered ceramic sand coarse material contained in the wall material base layer material is 18-30, and the average thickness of the base layer is 2.5-3mm; the proportion of lightweight sintered ceramic sand fine material contained in the surface layer material is 10-22, and the average thickness of the surface layer is 1.5-2mm; the surface texture is a staggered three-dimensional tile pattern or brick pattern, and the average relative height of the concave and convex is 0.5-1mm; the surface roughness is Ra400~800 (μm); the color temperature of the surface color is 6500-8500K.

[0043] The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the middle adjustment reflective surface are as follows: the proportion of lightweight sintered pottery sand coarse material contained in the wall material base layer material is 15-18, and the average thickness of the base layer is 2-2.5mm; the proportion of lightweight sintered pottery sand fine material contained in the surface layer material is 10-13, and the average thickness of the surface layer is 1-1.5mm; the surface texture is unevenly arranged bark texture and water ripple shape, and the average relative height of the concave and convex is 0.8-1.2mm; the surface roughness is Ra200~400 (μm); the color temperature of the surface color is 5500-6500K.

[0044] The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the low-adjustment reflective surface are as follows: the wall material base layer material contains 10-12 portions of lightweight sintered ceramic sand coarse material, and the average thickness of the base layer is 1.5-2 mm; the surface layer material contains 6-8 portions of lightweight sintered ceramic sand fine material, and the average thickness of the surface layer is 0.8-1.2 mm; the surface texture is a nearly uniformly arranged coarse cloth pattern or fish scale pattern, and the average relative height of the concave and convex is 0.6-1 mm; the surface roughness is Ra100~200 (μm); the color temperature of the surface color is 4500-5500K.

[0045] The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the weakly adjustable reflective surface are as follows: the wall material base layer material contains 6-8 portions of lightweight sintered ceramic sand coarse material, and the average thickness of the base layer is 1.2-1.5 mm; the surface layer material contains 2-4 portions of lightweight sintered ceramic sand fine material, and the average thickness of the surface layer is 0.6-1 mm; the surface texture is a nearly uniformly arranged coarse cloth pattern or fish scale pattern, and the average relative height of the concave and convex is 0.4-0.8 mm; the surface roughness is Ra50~100 (μm); the color temperature of the surface color is 2500-3500K.

[0046] Beneficial effects:

[0047] 1. The ceramic sand diatomaceous earth coating for indoor audio-visual environment regulation provided by the present invention focuses on adopting a specific component formula to form a specific wall material reflective surface or action surface for indoor sound and light regulation, thereby realizing the regulation of indoor sound, light, temperature and humidity; after a one-time design, construction and testing, it can achieve fire prevention, safety, environmental protection, humidity regulation, thermal insulation and good sound environment regulation effects, thus solving the indoor environmental pollution problem caused by the large-scale use of soft bags, foams, organic coatings and other materials and products in the current audio-visual environment; the coating has a simple and clean construction process, flexible design, low cost and is easy to use on a large area.

[0048] 2. The indoor audio-visual environment adjustment method provided by the present invention adjusts the indoor sound, light, temperature and humidity by setting a reflective surface or an action surface made of special ceramic sand diatomaceous earth paint on the inner side of the indoor wall. The comprehensive indoor environmental element adjustment effect can be achieved through one-time measurement, design and construction. It uses less materials, fewer processes, and has low cost, and is easy to use on a large area.

[0049] 3. The wall material structure of the special ceramic sand diatomaceous earth coating provided by the present invention achieves the purpose of adjusting the indoor acoustic and optical level temperature and humidity by adjusting the material composition, structural layer thickness, position, area size and surface texture.

[0050] 4. The preparation materials, methods and wall material structures provided by the present invention have high integration, low cost, easy construction, reliable effect, and are easy to promote and use over a large area.

[0051] 5. The coating provided by the present invention is healthy, environmentally friendly, non-toxic and harmless, fireproof, heat-insulating and energy-saving, and can be used in large quantities indoors to effectively solve the problem of indoor air pollution.

[0052] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a schematic diagram of the structure of the ceramic sand diatomaceous earth coating and wall material specially used for adjusting the indoor audio-visual environment provided by the present invention;

[0054] Figure 2 It is a schematic structural diagram of the surface layer and concave-convex texture of the wall material of Example 1 of the present invention;

[0055] Figure 3 It is a schematic structural diagram of the surface layer and concave-convex texture of the wall material of Example 2 of the present invention;

[0056] Figure 4 It is a schematic structural diagram of the surface layer and concave-convex texture of the wall material of Example 3 of the present invention;

[0057] Figure 5 It is a schematic structural diagram of the surface layer and concave-convex texture of the wall material of Example 4 of the present invention;

[0058] Figure 6 : Comparative test diagram of acoustic performance of wall material structure provided by the present invention. DETAILED DESCRIPTION

[0059] Example 1

[0060] See attached Figures 1 to 5The ceramic sand diatomite coating for indoor audio-visual environment adjustment provided in this embodiment is a paste prepared from the following components in parts by weight: 10-40 of light sintered ceramic sand; 15-35 of diatomite; 8-15 of calcium carbonate; 2-12 of sepiolite; 10-30 of quartz sand; 5-12 of additives; 0.01-0.5 of mineral pigment; and 100-150 of water. The light sintered ceramic sand is a through-hole ceramic particle sintered at a high temperature, including ceramic sand fine material 42 with a particle size of 1-2 mm and ceramic sand coarse material 41 with a particle size of 2-4 mm. After the coating is applied and dried, a specific reflective surface or action surface is formed on the wall.

[0061] A method for adjusting indoor audio-visual environment using the aforementioned special ceramic sand diatomaceous earth coating comprises the following acoustic adjustment steps:

[0062] (1) preparing a special ceramic sand diatomite coating with specific properties, wherein the coating comprises a through-hole light-weight sintered ceramic sand with a particle size of 1-4 mm as an aggregate; specifically comprising ceramic sand fine material and ceramic sand coarse material;

[0063] (2) Measure the three-dimensional shape, structure and ambient noise level of the interior wall space, and the layout of the indoor audio equipment, and thereby determine the local area and parameters for adjusting the sound field performance;

[0064] (3) According to the local areas and parameters of the above-mentioned sound field performance adjustment, the corresponding special ceramic sand diatomaceous earth coating is selected, and the wall material structure, overall thickness and surface texture characteristics required to construct the reflective surface of each local area of ​​the wall are calculated, and a construction plan is formulated;

[0065] (4) Construction is carried out according to the above construction plan, and after drying, a wall material structure layer of the reflective surface of each local area of ​​the wall is obtained;

[0066] (5) The reflective surfaces of local areas of each wall interact with indoor and outdoor environmental factors to perform acoustic adjustments to obtain predetermined absorption, reflectivity and scattering rates, thereby achieving an indoor sound field effect with sound insulation, clear sound and accurate positioning.

[0067] The indoor audio-visual environment adjustment method, the performance adjustment target parameters include the following parameters of the reflective surface (or action surface) wall material structure layer: adjustment intensity classification, material composition, position, shape and area, structure layer thickness, surface texture and roughness, surface color and temperature characteristics, heat insulation, flame retardancy, humidity control and the like.

[0068] The adjustment intensity in the performance adjustment target parameter is divided into four levels of strong, medium, low and weak to design the reflective surface (or action surface) of the local area. The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the reflective surface (or action surface) are different. The corresponding change rules from strong to weak are as follows: the content of lightweight sintered ceramic sand contained in the wall material structure layer decreases successively, the thickness of the formed wall material decreases successively, the surface concave-convex height and roughness decrease successively, and the color temperature of the surface color decreases successively.

[0069] See also Figure 1 , Figure 2 The wall material structure for implementing the aforementioned indoor audio-visual environment adjustment method provided in this embodiment comprises a base layer 1, a surface layer 2 and a concave-convex texture 3, and each layer of material contains lightweight sintered ceramic sand, specifically coarse ceramic sand (coarse sand) 41 and fine ceramic sand (fine sand) 42; the base layer 1 is arranged on the inner surface of the wall, the surface layer 2 is arranged on the base layer 1, and the concave-convex texture 3 is arranged on the surface layer 2; the wall material structure layer corresponds to different strengths and other performance adjustment target parameters through the material composition, thickness and surface texture characteristics of the base layer 1, the surface layer 2 and the concave-convex texture 3, respectively, to form a reflection surface or an action surface with different adjustment strengths on a set local area of ​​the wall.

[0070] The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the emphasized joint reflective surface provided in this embodiment are as follows: the average thickness of the wall material structure layer is 3-5mm; the number of lightweight sintered ceramic sand coarse materials 41 contained in the wall material base layer 1 material is 18-30, and the average thickness of the base layer 1 is 1.5-3mm; the number of lightweight sintered ceramic sand fine materials 42 contained in the surface layer 2 material is 10-22, and the average thickness of the surface layer 2 is 1.5-2mm; the surface texture is a staggered three-dimensional tile pattern or brick pattern, and the average relative height of the concave and convex is 0.5-1mm; the surface roughness is Ra400~800 (μm); the color temperature of the surface color is 6500-8500K.

[0071] In this embodiment, the specific components (by weight) of the ceramic sand diatomite coating for indoor audio-visual environment adjustment are: 40 parts of light sintered ceramic sand, including 18-30 parts of coarse ceramic sand and 10-22 parts of fine ceramic sand; 20 parts of diatomite; 10 parts of calcium carbonate; 10 parts of sepiolite; 10 parts of quartz sand; 8 parts of additives; 0.5 parts of mineral pigment; and 100 parts of water. The diatomite is a calcined first-grade diatomite with a mesh size of 300-1500.

[0072] The through-hole light sintered ceramic sand is an elliptical light sintered ceramic sand with through holes running through the interior from front to back, so that the ceramic sand maintains the permeability of the pores. After a layer of diatomaceous earth is coated on the exterior, the entire sand has good sound adjustment, light adjustment, heat insulation and humidity adjustment functions.

[0073] The auxiliary agent includes any one or a combination of alginate, alginate, carrageenan, xanthan gum, organic bentonite, casein, potassium silicate, sodium silicate, polypropylene fiber, attapulgite powder, cellulose ether, glass fiber chopped strands, silicate cement, aluminate cement, calcium sulfate dihydrate, calcium hydroxide, calcium oxide, bentonite, aluminum hydroxide gel, and clay. In each embodiment, it can be selected according to the adjustment requirements.

[0074] The mineral pigment is one or any combination of titanium dioxide, inorganic iron oxide, ultramarine, phthalocyanine blue, phthalocyanine green, etc. In each embodiment, it can be selected according to the adjustment requirements.

[0075] Embodiment 2:

[0076] The ceramic sand diatomaceous earth coating, method and wall material structure for indoor audio-visual environment adjustment provided in this embodiment are basically the same as those in embodiment 1, except that:

[0077] The indoor audio-visual environment adjustment method further includes the following acoustic adjustment step of simulating a large spatial sound field:

[0078] (11) preparing a special ceramic sand diatomaceous earth coating with specific properties, and determining the specific content of lightweight sintered ceramic sand in the material based on the sound reflection, diffusion and absorption rate in the three-dimensional space to be obtained;

[0079] (21) Measure the three-dimensional shape of the interior wall space and the layout of the indoor audio equipment, and thereby determine the local area and parameters for adjusting the sound field performance; 3)

[0080] (31) According to the local areas and parameters of the above-mentioned sound field performance adjustment, select the corresponding special ceramic sand diatomaceous earth coating, and calculate the position, size, wall material structure, overall thickness and surface texture characteristics of the local reflective surface of the wall in the front, back, left, right and upper parts of the auditorium, and formulate a construction plan;

[0081] (41) According to the above construction plan, after drying, the wall material structure layer of the reflective surface of each local area of ​​the wall is obtained;

[0082] (51) The reflective surfaces in local areas of each wall adjust the indoor sound field elements through their location, area size, and wall material structure layer to create a spatial stereo field and obtain the predetermined absorption rate, reflectivity, and scattering rate. Each reflective surface controls the intensity, position, and reverberation delay of sound absorption, reflection, and scattering to jointly simulate the stereo field effect of a large space.

[0083] The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the middle adjustment reflective surface are as follows: the average thickness of the wall material structure layer is 3-4mm, the number of lightweight sintered pottery sand coarse materials contained in the wall material base layer material is 15-18, and the average thickness of the base layer is 2-2.5mm; the number of lightweight sintered pottery sand fine materials contained in the surface layer material is 10-13, and the average thickness of the surface layer is 1-1.5mm; the surface texture is unevenly arranged bark texture and water ripple shape, and the average relative height of the concave and convex is 0.8-1.2mm; the surface roughness is Ra200~400 (μm); the color temperature of the surface color is 5500-6500K.

[0084] In this embodiment, the specific components (in parts by weight) of the ceramic sand diatomaceous earth coating for indoor audio-visual environment adjustment are: 25 parts diatomaceous earth; 12 parts calcium carbonate; 8 parts sepiolite; 28 parts lightweight sintered ceramic sand, including 15-18 parts coarse material and 10-13 parts fine material; 25 parts quartz sand; 10 parts additive; 0.3 parts mineral pigment; and 110 parts water.

[0085] Embodiment 3:

[0086] The ceramic sand diatomaceous earth coating, method and wall material structure for indoor audio-visual environment adjustment provided in this embodiment are basically the same as those in Embodiments 1 and 2, except that:

[0087] The indoor audio-visual environment adjustment method further includes the following optical adjustment steps:

[0088] (12) preparing a special ceramic sand diatomaceous earth coating with specific properties, and determining the content of light sintered ceramic sand and the color temperature of the mineral pigment in the material based on the optical reflection, diffusion and absorption rate in the three-dimensional space to be obtained;

[0089] (22) Measure the three-dimensional shape, structure, ambient color temperature and light intensity of the interior wall space, the layout of the indoor lighting and video display equipment, and thereby determine the target parameters for adjusting the performance of the light field;

[0090] (32) adjusting the target parameters according to the above light field performance, selecting a special ceramic sand diatomaceous earth coating with corresponding parameters, and calculating the wall material structure, overall thickness and surface texture characteristics of the reflective surface of each local area of ​​the wall, and formulating a construction plan;

[0091] (42) According to the above construction plan, after drying, a wall material structure layer of the reflective surface of each local area of ​​the wall is obtained;

[0092] (52) The wall material structure layer of the reflective surface of each local area of ​​the wall interacts with indoor and outdoor environmental factors to perform optical adjustments to obtain the predetermined absorption rate, reflectivity and scattering rate, thereby achieving a viewing effect with distinct color levels and natural transition between movement and stillness.

[0093] The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the low-adjustment reflective surface are as follows: the average thickness of the wall material structure layer is 2.7-3.2mm, the number of lightweight sintered ceramic sand coarse materials contained in the wall material base layer material is 10-12, and the average thickness of the base layer is 1.5-2mm; the number of lightweight sintered ceramic sand fine materials contained in the surface layer material is 6-8, and the average thickness of the surface layer is 0.8-1.2mm; the surface texture is a coarse cloth pattern or fish scale pattern with a nearly uniform arrangement, and the average relative height of the concave and convex is 0.6-1mm; the surface roughness is Ra100~200 (μm); the color temperature of the surface color is 4500-5500K.

[0094] In this embodiment, the specific components (in parts by weight) of the ceramic sand diatomaceous earth coating specially used for indoor audio-visual environment adjustment are: 18 lightweight sintered ceramic sand, including 10-12 coarse material and 6-8 fine material; 30 diatomaceous earth; 15 calcium carbonate; 12 sepiolite; 30 quartz sand; 12 additives; 0.05 mineral pigment; and 130 water.

[0095] Embodiment 4:

[0096] The ceramic sand diatomaceous earth coating, method and wall material structure for indoor audio-visual environment adjustment provided in this embodiment are substantially the same as those in embodiments 1-3, except that:

[0097] The indoor audio-visual environment adjustment method further includes the following temperature and humidity adjustment steps:

[0098] (23) Measure the three-dimensional shape, structure, ambient temperature and humidity of the indoor wall space, and the layout of the indoor temperature and humidity control equipment, and thereby determine the target parameters for temperature and humidity performance adjustment;

[0099] (33) Adjust the target parameters according to the above temperature and humidity performance, select the special ceramic sand diatomaceous earth coating with corresponding parameters, calculate the wall material structure, overall thickness and surface texture characteristics of the local area of ​​each wall, and formulate a construction plan;

[0100] (43) After drying according to the above construction plan, the working surface of each local area of ​​the wall is obtained;

[0101] (53) The wall material structure layer of the local area of ​​each wall interacts with the indoor temperature 35 and humidity control equipment to adjust the temperature and humidity so that the indoor temperature is within the range of 18-25°C and the humidity is within the range of 45-65%RH.

[0102] The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the weakly adjustable reflective surface are as follows: the average thickness of the wall material structure layer is 1.8-2.5mm, the number of portions of lightweight sintered ceramic sand coarse material contained in the wall material base layer material is 6-8, and the average thickness of the base layer is 1.2-1.5mm; the number of portions of lightweight sintered ceramic sand fine material contained in the surface layer material is 2-4, and the average thickness of the surface layer is 0.6-1mm; the surface texture is a nearly uniformly arranged coarse cloth pattern or fish scale pattern, and the average relative height of the concave and convex is 0.4-0.8mm; the surface roughness is Ra50~100 (μm); the color temperature of the surface color is 2500-3500K.

[0103] In this embodiment, the specific components (by weight) of the ceramic sand diatomaceous earth coating for indoor audio-visual environment adjustment are: 35 parts of diatomaceous earth; 8 parts of calcium carbonate; 2 parts of sepiolite; 10 parts of lightweight sintered ceramic sand, including 6-8 parts of coarse material and 2-4 parts of fine material; 10 parts of quartz sand; 5 parts of additives; 0.01 parts of mineral pigment; and 150 parts of water.

[0104] In the above embodiments of the present invention, by adding lightweight sintered ceramic sand of appropriate proportion and particle size as wall material aggregate on the basis of the diatom mud formula, the porosity of the material coating and the surface roughness of the coating can be adjusted; at the same time, it is conducive to forming a concave-convex texture;

[0105] The present invention performs the following acoustic treatment of sound by means of multiple reflecting surfaces arranged on the inner side of the wall: acoustic adjustment such as shock absorption, sound insulation, sound absorption, reflection, diffusion, and sound mixing; the texture and roughness control of the wall material structure of the present invention plays a better regulatory role in the absorption and diffusion of audio.

[0106] The following lighting optical processing is performed: adjusting the regional distribution of light, light absorption, refraction, reflection, diffuse reflection, and light color, color temperature, illumination, contrast, etc.; the texture and roughness of the surface of the wall material structure of the present invention have a good regulating effect on light absorption and diffusion;

[0107] Carry out the following humidity treatment: adjust the water absorption and moisture permeability coefficient to keep the indoor air within the temperature and humidity range, making the human body more comfortable, while making the sound transmission clearer and the light transmission more transparent.

[0108] The following temperature treatment is performed: adjusting the thermal conductivity and the heat storage coefficient, and performing heat insulation and heat preservation treatment; the use of lightweight ceramic sand in the present invention increases the thermal resistance effect of the structural layer, reduces heat transfer, and thus achieves energy saving.

[0109] At the same time, the wall material structure must also meet mechanical strength standards such as compressive strength, flexural strength, and wear resistance.

[0110] The composite material of diatom mud + lightweight ceramic sand provided by the present invention has countless micropores of different sizes that can absorb and block excess sound waves, light waves, moisture and heat, and its effect is equivalent to more than 4 times that of cement mortar and stone slabs of the same thickness; through color and texture structure, it has multiple functions such as decoration, beautification, sound absorption, silencing, and noise reduction.

[0111] The materials, methods and structures provided by the present invention can be improved synchronously to form corresponding reflection surfaces (or action surfaces) in local areas of the wall, thereby achieving a variety of adjustment effects.

[0112] The present invention can also use reflective surfaces of different positions, sizes, thicknesses and surface textures to adjust the degree of acoustic reflection, diffusion and absorption, adjust parameter control in the sound propagation process, and achieve excellent sound balance, thereby creating a grand three-dimensional spatial sound field in an actually relatively limited space; for example, by controlling the reverberation time, echo and delay effects, a strong sense of presence, space and air can be created.

[0113] The invention is easy to construct and can be constructed on the inner side of the entire indoor wall. Through a plurality of reflective surfaces with different positions, angles and areas, the reflective surfaces are specifically arranged on the walls in front, behind, left, right and above the audience, so as to comprehensively improve the acoustic diffusion of the indoor wall surface, improve the sound quality parameters such as sound fullness, clarity, strength and sense of space, obtain a good three-dimensional sound field with a good proportion of depth, width and height, so that the audience feels surrounded by the music and feels as if they are at the scene, and is no longer restricted by the architectural space and layout of the building wall itself.

[0114] In terms of optical adjustment, by setting different reflective surfaces, the existing lighting system can be reasonably adjusted to adapt the internal light and light level to the video performance. If a large-size projection screen is used, a completely dark or nearly dark environment should be created like a movie theater to improve its contrast; if an LCD TV is used, a dim ambient light with a moderate transition from the dark background is required to obtain the best color resolution, which is conducive to improving the appreciation effect of the home theater. Generally, light should not be allowed to directly shine on the video equipment screen, and interference from external light should also be isolated.

[0115] The lighting equipment for the indoor audio-visual environment does not adopt the scattering method, but the projection method. At the same time, the scattered light should be absorbed as much as possible to avoid it interfering with the audience's attention. For example, different numbers of downlights can be set on the edges of the ceiling. The type and color of the light source of the downlights can be customized. Fancy wall lamps can be set at appropriate positions on the surrounding walls. The number can be selected between 1 and 2 according to the size of the room. A movable floor lamp can be set in the corner or appropriate position. In addition, 1 to 2 sets of fluorescent lamps can be set. They can be wall lamps or embedded in the ceiling. Fluorescent light can be directed to the projection screen and the edges of the surrounding walls, and to the wall behind.

[0116] The indoor acoustic environment has a great influence on the indoor sound field created by the multi-channel speakers. Rooms with different architectural space structures will have different spatial acoustic characteristics. The multi-channel sound system uses multiple speakers to express sound image positioning and create surround sound effects. According to existing research results, the early reflected sound that is less than 1ms behind the direct sound in the room will have a significant interference with the direct sound, making the sound more turbid, thereby affecting the sound positioning. The early reflected sound between 1 and 30ms will have less interference with the direct sound. It is combined with the direct sound to help enhance the loudness, but it may change the timbre of the direct sound. For the reflected sound after 30ms, the human ear usually thinks it is a reverberation sound. Therefore, the present invention is to carry out the design and construction of the position, size and texture of the reflecting surface, and comprehensively consider the materials, texture structure, position, area, etc. used, and do a good job of acoustic treatment such as indoor sound absorption, diffusion, and sound insulation to avoid excessive reverberation that will reduce the clarity and coherence of the sound and affect the playback sound effect.

[0117] At present, most consumers use their living rooms as audio-visual rooms, and more and more people can use a separate room as an audio-visual room. The clear area of ​​the room used as an audio-visual room should be more than 10 square meters, and the equipment placement and viewing distance should also be reasonably arranged; the room height should be no less than 2.8m and no more than 4 meters; because the ceiling will also reflect sound, a space that is too high is prone to inaccurate positioning due to the long arrival time of the reflected sound. The present invention also needs to be processed in a targeted manner, and adjustments are made by setting a specific reflection surface or action surface.

[0118] In the prior art, the ideal audio-visual room should be rectangular, and the length, width and height ratio of the room should conform to the golden ratio rule, such as 1:1.25:1.6, 1:1.6:2.5 or 1:2.5:3.2. However, this standard is often difficult to achieve in reality. Therefore, by adopting the present invention, the length, width and height ratio of the audio-visual room can be transformed into an ideal state by setting a reflective surface or an active surface in a local area of ​​the wall.

[0119] The present invention can be used to process various indoor walls and ceilings. The material of the present invention can be used to first construct on all walls to form a base layer, and then set the surface layer and concave-convex texture in the local area that affects the audio and video effects. At present, the four walls of the wall are mostly cement walls or brick walls. Such walls have strong reflections for high, medium and low frequencies, especially high frequencies. Therefore, sound absorption in appropriate proportions and positions becomes a primary task. However, the proportion of sound absorption cannot be too large to avoid affecting the layering and richness of the sound.

[0120] The present invention can carry out targeted and specific treatment on the four walls of front, back, left and right. For the left and right side walls, the reflective surface is mainly set to absorb the first reflected sound emitted from the speaker. To avoid too much first reflected sound, which will lead to unclear positioning and the sound volume will be too loud; at this time, it is necessary to set a strong adjustment reflective surface in the position directly opposite the speaker and in the middle of the speaker and the auditorium to absorb sound. It is not necessary to make the entire wall surface into a reflective surface. The area of ​​the strong adjustment reflective surface for this purpose is generally 1 to 1.5 meters wide and 2 / 3 of the height of the entire wall.

[0121] Regarding the treatment of the wall behind the speaker: the wall behind the speaker should be strong and hard, so as not to absorb the low frequency and double the power of the amplifier. Generally, a 1mX1m local reflection surface is made on the wall behind the speaker, which is generally made into a weak adjustment reflection surface, so that the sound positioning is accurate and the layers are full.

[0122] Regarding the treatment of the corner wall behind the speaker: Any corner is where the standing wave is the strongest. Generally, the walls on the left and right sides of the corner are made into a 0.5mX1m local reflection surface, usually a middle adjustment reflection surface, to absorb excess reflected sound.

[0123] Treatment of the back wall: This wall needs both sound absorption and diffusion. Absorption is used because it is too close to the back wall and the reflected sound is too strong; diffusion is used because it is far from the back wall and diffusion can make the sound more natural. Generally, the entire back wall is made into a low-adjustment reflective surface to absorb excess reflected sound and diffuse other reflected sound and mixed sound to the audience seats, so that the effects of absorption and diffusion are achieved at the same time.

[0124] Ceiling treatment: Generally speaking, the ceiling also needs to have both sound absorption and diffusion properties. Usually the entire back wall is made into a low-adjustment reflective surface or a weakly adjusted reflective surface, so that the sound will be the best.

[0125] Wall treatment in the compensatory treatment area: If there is a smooth cement wall on one side and a large cabinet furniture on the other side, it is necessary to set up a strong adjustment or a medium adjustment reflective surface at the corresponding position on one side of the cement wall for acoustic compensation treatment, so that the acoustic performance of both sides of the main speaker is as close to symmetry as possible. If there is a window or door on one side, it is also necessary to set up a compensatory reflective surface at the corresponding relative position to effectively reduce some of the reflected sound, improve the clarity of the sound, and thus improve the listening effect.

[0126] When arranging furniture in an audio-visual room of the present invention, it is best not to use symmetry to prevent sound coloration; otherwise, sound-absorbing and reflecting surfaces should be set at the corresponding opposite positions.

[0127] The lightweight ceramic sand diatomaceous earth with a specific particle size used in the present invention has a rough surface and through pores. It is combined with diatomaceous earth to form a coating, which has a specific diffusion and absorption effect in acoustics, and can achieve the effect of accurate positioning, absorption and proper reflection of high, medium and low frequency sound waves.

[0128] The sound absorption coefficient of the lightweight ceramic sand diatomaceous earth wall material used in the present invention can reach 0.3-0.6 (different surface textures and frequencies), and the specific performance test is shown in Table 1.

[0129]

[0130] Table 1 Comparison of sound absorption coefficients of the present invention and common materials

[0131] See also Figure 6 , the sound absorption effect of the wall material structure of the present invention is measured:

[0132] The present invention compares the room's sound floor noise before and after the light ceramic sand diatomaceous earth wall material is used to form a reflective surface on the wall of the same room. The sound level meter is used for direct measurement, and the result is that the difference in the floor noise before and after the material is used in the same room is about -10dB, indicating that the present invention has a significant sound absorption and adjustment effect.

[0133] (1) Figure A before use: The average room noise floor is 35dB.

[0134] (2) Figure B after use: The average room noise floor is 24.5dB.

[0135] In other embodiments of the present invention, within the range of the components and their formula ratios recorded in the above embodiments, as well as within the range of the recorded process conditions, specific components and ratios can be selected at will, and the effects recorded in the present invention can all be achieved. Therefore, the present invention will no longer list them one by one.

[0136] The present invention is not limited to the above-mentioned embodiments. Other ceramic sand diatomaceous earth coatings, methods and wall material structures for adjusting indoor audio-visual environments obtained by the same or similar methods, such as selecting specific values ​​or components with similar functions, are all within the protection scope of the present invention.

Claims

1. A method for adjusting an indoor audio-visual environment, characterized in that: It includes the following acoustic adjustment steps: (1) preparing a special ceramic sand diatomaceous earth coating, which includes a through-hole light-weight sintered ceramic sand with a particle size of 1-4 mm as an aggregate; (2) Measure the three-dimensional shape, structure and ambient noise level of the interior wall space, as well as the layout of the indoor audio equipment, and thereby determine the local area and parameters for adjusting the sound field performance; (3) According to the local areas and parameters of the above-mentioned sound field performance adjustment, select the corresponding special ceramic sand diatomaceous earth coating, calculate the wall material structure, overall thickness and surface texture characteristics required to construct the reflective surface of each local area of ​​the wall, and formulate a construction plan; (4) Construction is carried out according to the above construction plan, and after drying, a wall material structure layer of the reflective surface of each local area of ​​the wall is obtained; (5) The reflective surface of each local area of ​​the wall interacts with indoor and outdoor environmental factors to perform acoustic adjustment to obtain the predetermined absorption rate, reflectivity and scattering rate, thereby achieving the indoor sound field effect of sound insulation, clear sound and accurate positioning; The special ceramic sand diatomite paint is a paste prepared from the following components in proportion by weight: 10-40 parts of light sintered ceramic sand; 15-35 parts of diatomite; 8-15 parts of calcium carbonate; 2-12 parts of sepiolite; 10-30 parts of quartz sand; 5-12 parts of additives; 0.01-0.5 parts of mineral pigment; and 100-150 parts of water. After the paint is applied and dried, a specific reflective surface or action surface is formed on the wall.

2. The indoor audio-visual environment adjustment method of the special ceramic sand diatomaceous earth coating according to claim 1 is characterized in that: It also includes the following acoustic adjustment steps to simulate a large spatial sound field: (11) Prepare special ceramic sand diatomaceous earth coatings with specific properties, and determine the specific content of lightweight sintered ceramic sand in the material based on the sound reflection, diffusion and absorption rate in the three-dimensional space to be obtained; (21) Measure the three-dimensional shape, length, width and height of the interior wall space, as well as the layout of the audio equipment, and thereby determine the local area and parameters for adjusting the sound field performance; (31) According to the local area and acoustic parameters of the above-mentioned sound field performance adjustment, select the corresponding special ceramic sand diatomaceous earth coating, calculate the position, size, wall material structure, overall thickness and surface texture characteristics of the local reflective surface of the wall in the front, back, left, right and upper parts of the auditorium, and formulate a construction plan; (41) According to the above construction plan, after drying, the wall material structure layer of the reflective surface of each local area of ​​the wall is obtained; (51) The reflective surfaces in local areas of each wall adjust the indoor sound field elements through their location, area size, and wall material structure to create a spatial stereo field and obtain the predetermined absorption rate, reflectivity, and scattering rate. Each reflective surface controls the intensity, position, and reverberation delay of sound absorption, reflection, and scattering to jointly simulate the stereo field effect of a large space.

3. The indoor audio-visual environment adjustment method according to claim 1, characterized in that: It also includes the following optical adjustment steps: (12) Prepare special ceramic sand diatomaceous earth coatings with specific properties, and determine the content of lightweight sintered ceramic sand and the color temperature of mineral pigments in the material based on the optical reflection, diffusion and absorption rate in the three-dimensional space to be obtained; (22) Measure the three-dimensional shape, structure, ambient color temperature and light intensity of the interior wall space, the layout of indoor lighting and video display equipment, and determine the target parameters for adjusting the performance of the light field; (32) Adjust the target parameters according to the above light field performance, select the special ceramic sand diatomaceous earth coating with corresponding parameters, calculate the wall material structure, overall thickness and surface texture characteristics of the reflective surface of each local area of ​​the wall, and formulate a construction plan; (42) According to the above construction plan, after drying, the wall material structure layer of the reflective surface of each local area of ​​the wall is obtained; (52) The wall material structure layer of the reflective surface of each local area of ​​the wall interacts with indoor and outdoor environmental factors to perform optical adjustments to obtain the predetermined absorption rate, reflectivity and scattering rate, thereby achieving a viewing effect with distinct color levels and natural transition between movement and stillness.

4. The indoor audio-visual environment adjustment method according to claim 1, characterized in that: It also includes the following temperature and humidity adjustment steps: (23) Measure the three-dimensional shape, structure, ambient temperature and humidity of the indoor wall space, and the layout of the indoor temperature and humidity control equipment, and thereby determine the target parameters for temperature and humidity performance adjustment; (33) Adjust the target parameters according to the above temperature and humidity performance, select the special ceramic sand diatomaceous earth coating with corresponding parameters, calculate the wall material structure, overall thickness and surface texture characteristics of the local area of ​​each wall, and formulate a construction plan; (43) Construction is carried out according to the above construction plan, and after drying, the working surface of each local area of ​​the wall is obtained; (53) The wall material structure layer of the local area of ​​each wall interacts with the indoor temperature and humidity control equipment to adjust the temperature and humidity so that the indoor temperature is within the range of 18~25℃ and the humidity is within the range of 45~65% RH.

5. The indoor audio-visual environment adjustment method according to any one of claims 3-4, characterized in that: The performance adjustment target parameters include the following: adjustment intensity grading, material composition, position, shape and area, structural layer thickness, surface texture and roughness, and surface color temperature characteristic parameters of the reflective surface or active surface wall material structure layer.

6. The indoor audio-visual environment adjustment method according to claim 5, characterized in that: The adjustment intensity in the performance adjustment target parameter is divided into four levels of strong, medium, low and weak to design the reflective surface or action surface of the local area. The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the reflective surface or action surface are different. The corresponding change rules from strong to weak are as follows: the content of lightweight sintered ceramic sand contained in the wall material structure layer decreases successively, the thickness of the formed wall material decreases successively, the surface concave-convex height and roughness decrease successively, and the color temperature of the surface color decreases successively.

7. A wall material structure for implementing the indoor audio-visual environment adjustment method according to any one of claims 1 to 6, characterized in that: The wall material structural layer includes a base layer, a surface layer and a concave-convex texture, wherein the base layer is arranged on the inner surface of the wall, the surface layer is arranged on the base layer, and the concave-convex texture is arranged on the surface layer; the wall material structural layer corresponds to different strengths and other performance adjustment target parameters through the material composition, thickness and surface texture characteristics of the base layer, the surface layer and the concave-convex texture, respectively, to form a reflection surface or an action surface with different adjustment intensities on a set local area of ​​the wall; wherein the adjustment intensity in the performance adjustment target parameters is divided into four levels: strong, medium, low and weak.

8. The wall material structure of the indoor audio-visual environment adjustment method according to claim 7, characterized in that: The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the emphasized node reflective surface are as follows: the wall material base layer material contains 18-30 parts of lightweight sintered ceramic sand coarse material, and the average thickness of the base layer is 1.5-3 mm; the surface layer material contains 10-22 parts of lightweight sintered ceramic sand fine material, and the average thickness of the surface layer is 1.5-2 mm; The surface texture is a staggered three-dimensional tile or brick pattern, with an average relative height of 0.5-1mm; the surface roughness is Ra400~800; the color temperature of the surface color is 6500-8500K.

9. The wall material structure of the indoor audio-visual environment adjustment method according to claim 7, characterized in that: The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the middle adjustment reflective surface are as follows: the proportion of lightweight sintered pottery sand coarse material contained in the wall material base layer material is 15-18, and the average thickness of the base layer is 2-2.5mm; the proportion of lightweight sintered pottery sand fine material contained in the surface layer material is 10-13, and the average thickness of the surface layer is 1-1.5mm; the surface texture is unevenly arranged bark texture and water ripple shape, and the average relative height of the concave and convex is 0.8-1.2mm; the surface roughness is Ra200~400; the color temperature of the surface color is 5500-6500K.

10. The wall material structure of the indoor audio-visual environment adjustment method according to claim 7, characterized in that: The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the low-adjustment reflective surface are as follows: the number of lightweight sintered ceramic sand coarse materials contained in the wall material base layer material is 10-12, and the average thickness of the base layer is 1.5-2mm; the number of lightweight sintered ceramic sand fine materials contained in the surface layer material is 6-8, and the average thickness of the surface layer is 0.8-1.2mm; the surface texture is a nearly uniformly arranged coarse cloth pattern or fish scale pattern, and the average relative height of the concave and convex is 0.6-1mm; the surface roughness is Ra100~200; the color temperature of the surface color is 4500-5500K.

11. The wall material structure of the indoor audio-visual environment adjustment method according to claim 7, characterized in that: The material, thickness and surface texture characteristics of the wall material structure layer corresponding to the weakly adjustable reflective surface are as follows: the wall material base layer material contains 6-8 portions of lightweight sintered ceramic sand coarse material, and the average thickness of the base layer is 1.2-1.5 mm; the surface layer material contains 2-4 portions of lightweight sintered ceramic sand fine material, and the average thickness of the surface layer is 0.6-1 mm; the surface texture is a nearly uniformly arranged coarse cloth pattern or fish scale pattern, and the average relative height of the concave and convex is 0.4-0.8 mm; the surface roughness is Ra50~100; the color temperature of the surface color is 2500-3500K.

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