KR101289078B1 - Non parallel sound insulation wall for uniformly sound diffusion - Google Patents

Abstract

PURPOSE: A non-equilibrium cutoff wall structure of the indoor for even sound diffusion is provided to reduce the distortion caused by sound absorption of a sound absorbing material by inducing even sound diffusion and blocking transmission of sound noise. CONSTITUTION: A non-equilibrium cutoff wall structure of the indoor for even sound diffusion comprises a wall main body (40), a stud (20), and a soundproof panel (10). The wall main body forms an indoor wall structure of a rectangular plane or a square plane. A stud is fixed to a bottom surface, a ceiling, or the wall main body, and the soundproof panel is fixed. The soundproof panel is installed on one side wall in order to be parallel to a plane, and is installed in order to be inclined on the other side wall so that the walls facing each other are installed in order not to be parallel. [Reference numerals] (AA) Stud installation position difference; (BB) Stud depth difference; (CC) Damping sheet depth difference

Description

Non-Parallel Sound Insulation Wall for Uniformly Sound Diffusion

The present invention induces uniform sound diffusion inside the space in the interior space where the sound insulation is installed to block sound from being transmitted to the neighbor or the outside, so that the original sound of the sound is not distorted and the sound insulation wall of the room can be maintained. It's about structure.

In Korea, more than 60% of people live in apartment houses. In particular, almost 83% of Seoul residents live in multi-family housing, and in most cities, 70-80% live in multi-family housing.

Since apartments share walls and floors, noise from neighbors creates serious complaints. The most representative noises are floor impact sounds and facility noises, but acoustic noises generated by musical instruments such as pianos are also serious complaints. Recently, as the number of music lovers increases due to the improvement of living standards, the number of households with musical instruments as well as acoustics in the house is increasing, and the acoustic noise is increasing accordingly.

A commonly used method to block acoustic noise is to install a sound absorbing material inside the space to complete the soundproof space. The sound absorbing material absorbs the original sound so that the sound transmission is attenuated to the neighbor. Accordingly, related technologies have also been concentrated on the development of sound absorbing materials that can increase the sound absorbing effect. For example, Utility Model Registration No. 20-298648, Utility Model Registration No. 10-2011-0007757, Patent Registration No. 10-0993662, etc. There is this.

However, the installation of the sound absorbing material prevents acoustic noise from being transmitted to the neighbors, but it is difficult to maintain the sound quality of the original sound by causing the original sound of the sound to be distorted by sound absorption or natural vibrations inside the indoor space. The apartments are generally rectangular or square with a ceiling height of about 2.4m and a room size of 3m ~ 4.5m. In this case, the natural sound field distribution is uneven due to the natural vibration of the indoor space caused by standing waves of the indoor sound. . In particular, when playing the piano indoors, the frequency band generated from the piano is widely distributed from 28Hz to 4186Hz, so the sound pressure distribution of the yarn due to the natural vibration of the yarn is very uneven in the low range of 100Hz or less.

The present invention was developed to improve the distortion problem of the original acoustic sound according to the installation of a sound absorbing material, such as to block the transmission of the sound to the neighbor or the outside, while exhibiting sound insulation effect while inducing a uniform diffusion of sound to reduce the distortion of the original sound There is a technical problem in providing a new sound insulation wall structure that can be prevented.

In order to solve the above technical problem, in the building partitioned by a wall so that an indoor space of a square or rectangular plane is formed, a soundproof plate is installed as an interior finishing material for a wall inside the indoor space, but the walls facing each other are not installed in parallel. It provides a non-parallel sound insulation wall structure of the room for uniform sound diffusion, characterized in that the.

According to the present invention, the following effects can be expected.

First, since the walls facing each other in a square or rectangular planar interior space are arranged non-parallel with a sound insulation plate instead of a sound absorbing material, acoustic noise can be prevented from being transmitted to the neighbors, and the original sound of the sound absorbing material is absorbed. Distortion caused by can be eliminated, so you can enjoy the original sound as you play or listen. In particular, the anti-parallel finish of the wall by the sound insulation panel is controlled so that the sound field conditions in the room are diffused so that the natural vibration of the indoor space can be prevented and enjoyed while maintaining the sound quality of the original sound.

Second, since the installation angle of the sound insulation panel as the interior finishing material needs only to be installed, general buildings such as multi-family houses and commercial buildings can be simply made effective sound chambers. As a result, music enthusiasts who want to play musical instruments such as pianos and violins, as well as music lovers who want to be free from neighbor's complaints while maintaining the sound quality of the original music, can comfortably enjoy music in the communal living spaces such as their homes and listening rooms.

1 is a schematic diagram of a non-parallel sound insulation wall structure of a room according to the present invention.
Figure 2 shows a variety of ways for the formation of one non-parallel wall in a non-parallel sound insulation wall structure in the room according to the present invention.
3A to 3C show experimental conditions and experimental results for [Experimental Example 1].
4A to 4B show experimental conditions and experimental results for [Experimental Example 2].
5A to 5B show experimental results of [Experimental Example 3].
6 shows experimental conditions and experimental results for [Experimental Example 4].

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings and preferred embodiments.

1 is a schematic diagram of a non-parallel sound insulation wall structure of a room according to the present invention. As can be seen from the present invention, in a building partitioned with walls to form a square or rectangular planar interior space, the sound insulation panel 10 is installed as interior finishing material for walls in the interior space, but the walls facing each other are not installed in parallel. It is characterized by. The soundproofing material is installed instead of the sound absorbing material as the interior surface finishing material of the wall, but the wall facing each other is installed in the antiparallel composition. This installation is the result according to the following experimental example, in the experimental example it was confirmed that the sound pressure level is uniformly distributed when configured as a non-parallel wall. The uniform sound pressure level distribution in the indoor space eliminates the distortion of the sound so that the sound quality of the original sound is maintained. In the present invention, the sound insulation board 10 may be appropriately selected from boards such as straw boards, plate materials such as wall boards (including paper, synthetic resin, metal plates, etc.), stone materials such as marble finish, and the like. Silver may be finished with a wallpaper made of paper, fabric or the like to give an interior effect.

As shown in FIG. 1, the non-parallel wall composition can be easily solved by adjusting the installation angle of the sound insulation board 10 on one of the walls facing each other. In other words, the sound insulation plate 10 is installed in parallel with a square or rectangular plane on one wall of the walls facing each other, while the sound insulation plate 10 is inclined with a square or rectangular plane on the other wall. Here, the sound insulation plate 10 may be installed in close contact with the wall main body 10 as well as separately separated from the wall main body 10.

Figure 2 shows a preferred embodiment for forming one inclined wall surface in a non-parallel sound insulation wall structure of the room according to the present invention. In particular, in Figure 2 to further double the sound insulation effect to form a hollow layer and a sound absorbing layer 30 inside the sound insulation plate 10, in some cases the hollow layer and the sound absorbing layer 30 can be omitted, of course. to be. Specifically, the wall body 40 to form the interior space wall structure of the square plane; A stud 20 disposed spaced apart from each other and fixed to a floor or a ceiling or a wall body 40 of an indoor space of a square or rectangular plane; A sound insulation board 10 fixed to the stud 20; Sound absorbing layer 30 formed between the wall body 40 and the sound insulating plate 10; and comprises a hollow between the sound insulating plate 10 and the sound absorbing layer 30 by the installation space of the stud 20 A layer is being formed. Here, while adjusting the installation position of the stud 20 (Fig. 2 (a)), or while controlling the dance of the stud 20 (Fig. 2 (b)) it is possible to install the sound insulation plate 10 on one wall inclined. Furthermore, a vibration damper 50 may be further provided between the stud 20 and the sound insulation plate 10 to suppress transmission of vibration noise (FIG. 2C). In this case, the thickness of the vibration damper 50 may be reduced. By adjusting and installing, the sound insulation board 10 can be inclinedly installed. What is necessary is just to apply a normal material to the sound absorption layer 30, the stud 20, and the damping material 50 as it is.

On the other hand, as shown in Figure 2 (d) it is also possible to further install a diffuser (60) on the sound insulating plate 10 surface to induce a uniform distribution of sound pressure level through active diffusion of the sound source. The diffuser 60 is sufficient if its thickness is about 25 mm. In addition, since the shape of the diffuser 60 can be diversified, when the diffuser 60 is provided, the diffuser 60 can function as both the diffuser 60 and the design material.

Furthermore, the present invention proposes to finish the floor and ceiling in a non-parallel composition based on the uniform sound pressure level distribution effect of the non-parallel sound insulation wall. That is, in a building partitioned with walls to form a square or rectangular planar interior space, the wall portion inside the interior space is finished with the non-parallel sound insulation wall structure described above, while the floor portion is finished with a flat sound insulation floor, and the ceiling portion is hardened. It is finished with photo-ceiling ceiling to finish the floor and ceiling in non-parallel structure. Ondol floors, floorboards, floors, etc. have a sound insulation effect, so if you use the conventional floor finish as it is a flat soundproof floor is completed, if the soundproof board is installed inclined soundproof ceiling is completed. The inclined sound insulation ceiling may be implemented in the same manner as the inclined sound insulation wall structure described in FIG. As such, the floor and the ceiling as well as the wall are completed in a non-parallel structure, so that the uniform sound pressure level distribution effect is expected to be further increased.

[Experimental example 1] Sound pressure level distribution in indoor space when ceiling and wall are finished with sound absorbing material

1. Experimental Method

The sound pressure level distribution was investigated through computer simulation under the experimental conditions as shown in [Table 1] and FIG. 3A, and the sound absorption rate of the finishing material used in the experiment is shown in Table 2 below.

Experimental conditions division Example 1 Example 2 Example 3 Example 4 Indoor space standard 3.0m × 3.0m × 2.4m Window size  1.8m × 1.5m Door size 0.9m × 2.0m Sound source location Center point at the position 1m away from the right side wall of the entrance
(Piano Location: Assumed as omnidirectional sound source) Measuring position Assume the microphones are installed on the 1.2m side above the floor with 0.1m spacing floor Carton finish on mortar Pressed Flooring Finish Ceiling and wall Fabric finish on gypsum board Perforated Sound Absorbing Floor 50T Finish Wall-porous sound absorbing layer 50T finish
Ceiling-SKYVIVA 25T (40K) finish

% Sound Absorption of Finishing Material material 125 Hz 250 Hz 500Hz 1000Hz 2000Hz 4000 Hz Cardboard on concrete 0.02 0.02 0.03 0.04 0.04 0.05 Compressed Flooring 0.20 0.15 0.12 0.11 0.09 0.06 duet 0.15 0.05 0.03 0.03 0.02 0.02 Gypsum Board Fabric 0.18 0.10 0.07 0.11 0.18 0.22 door 0.01 0.02 0.02 0.02 0.02 0.02 Perforated Sound Absorbing Floor 50T 0.23 0.52 0.73 0.86 0.77 0.71 Sky Viva 25T (40K) 0.13 0.29 0.70 0.89 0.82 0.66

2. Experimental results

The sound pressure level was confirmed, and as shown in FIGS. 3B and 3C. As can be seen, the better the sound absorption rate, the more uneven the sound pressure distribution in the room. From this, it can be seen that the method of using sound absorbing materials, which is usually applied to block the transmission of musical instrument sounds in an apartment house, makes the sound pressure level of the room uneven and degrades the sound quality of the sound source.

[Experiment 2] Sound pressure level distribution in the indoor space when one side of the wall is inclined and non-parallel

1. Experimental Method

The sound pressure level distribution was investigated through computer simulation under the experimental conditions as shown in [Table 3] and FIG. 4A, and the sound absorption rate of the finishing material used in the experiment was as shown in [Table 2], which was previously seen in [Experimental Example 1].

Experimental conditions division Example 2 Example 5 Example 6 Indoor space standard 3.0m × 3.0m × 2.4m Window size  1.8m × 1.5m Door size 0.9m × 2.0m Sound source location Center point at the position 1m away from the right side wall of the entrance
(Piano Location: Assumed as omnidirectional sound source) Measuring position Assume the microphones are installed on the 1.2m side above the floor with 0.1m spacing floor Pressed Flooring Finish Ceiling and wall Fabric finish on gypsum board Wall Parallel wall Non-parallel wall (A) of FIG. 4A Non-parallel wall (b) of FIG. 4A

2. Experimental results

The sound pressure level was confirmed, and as shown in FIG. 4B. As can be seen, in the case of non-parallel walls, the sound pressure distribution in the room is more uniform. However, there was no significant difference from the parallel wall, because the computer-based simulation examines the sound lines geometrically, ignoring the wave nature. This phenomenon can be seen when compared with the results of the field experiment of [Experimental Example 4] below.

Experimental Example 3 Sound Pressure Level Distribution According to Indoor Space Size

1. Experimental Method

The sound pressure level distribution was examined while varying only the indoor space size under the same conditions (parallel wall) as in Example 2 of [Experimental Example 1, 2]. Specific experimental conditions are shown in [Table 4] below.

Experimental conditions division Example 2 Example 7 Example 8 Example 9 Indoor space standard 3.0 × 3.0 × 2.4m 3.0 × 3.9 × 2.4m 3.9 × 4.2 × 2.4m 4.2 × 4.5 × 2.4m Window size  1.8m × 1.5m Door size 0.9m × 2.0m Sound source location Center point at the position 1m away from the right side wall of the entrance
(Piano Location: Assumed as omnidirectional sound source) Measuring position Assume the microphones are installed on the 1.2m side above the floor with 0.1m spacing floor Pressed Flooring Finish Ceiling and wall Fabric finish on gypsum board

2. Experimental results

As a result of confirming the sound pressure level, it showed like FIG. 5A and 5B. As can be seen, the larger the size of the indoor space, the larger the sound pressure level difference between the sound source and the wall surface. From these results, it can be expected that the uniform distribution effect of sound pressure level according to antiparallel wall treatment will be increased in large case of indoor space.

 Experimental Example 4 Field Experiment

1. Experimental Method

The sound pressure level distribution was examined through field tests under the experimental conditions as shown in [Table 3] and FIG. 4A, and the sound absorption rate of the finishing material used in the experiment was as shown in [Table 2], which was examined in [Experimental Example 1]. The reason for the field experiment is that in the case of the sound field examination by computer simulation, the sound line is examined geometrically (the sound is not wavelike, but the straightness like light). This is because there is a limit that cannot be grasped.

Experimental conditions division Example 10 Example 11 Example 12 Indoor space standard 3.6m × 3.9m × 2.4m Window size  1.8m × 1.5m Door size 0.9m × 2.0m Sound source location Directional sound source facing the wall at the center point 0.5m away from the left wall of the door Measuring position Microphones are installed on the floor 1.2m above the surface, 0.5m apart floor Pressed Flooring Finish Ceiling and wall Fabric finish on gypsum board Attach sky viva 25mm only to the wall with glass windows and two intergenerational walls among the four walls Of the four walls, only the wall with glass windows and the two sides of the interwall are attached with a reflective wall plate with the tip inclined 0.1 m. Wall Parallel wall Parallel wall Nonparallel wall

2. Experimental results

As a result of confirming the sound pressure level, it was shown in FIG. Unlike computer simulation results, the difference in sound pressure level occurs even in the case of parallel wall, and the difference becomes larger when the sound absorbing material is attached. These results are the result of installing the sound absorbing material only on the two walls in the case of the sound absorbing material, the sound pressure level distribution will be more heterogeneous if the sound absorbing material is installed on the four surfaces.

As can be seen, the larger the size of the indoor space, the larger the sound pressure level difference between the sound source and the wall surface. From these results, it can be expected that the uniform distribution effect of sound pressure level according to antiparallel wall treatment will be increased in large case of indoor space.

10: sound insulation board
20: Stud
30: sound absorption layer
40: wall body
50: vibration damper
60: diffuser

Claims (8)

In buildings partitioned by walls to form a square or rectangular planar interior,
The sound insulation panel 10 is installed as a interior finishing material for the walls inside the interior space, but the non-parallel sound insulation wall structure of the room for uniform sound diffusion, characterized in that the walls facing each other are not installed in parallel. In claim 1,
The sound insulation panel 10 is installed in parallel with a square or rectangular plane on one of the wall surfaces facing each other while being inclined with a square or rectangular plane on the other wall surface so that the wall surfaces facing each other are not installed in parallel. Non-parallel sound insulation wall structure for uniform sound diffusion. 3. The method of claim 2,
A wall body 40 forming an indoor space wall structure of a square or a rectangular plane;
A stud 20 disposed spaced apart from each other and fixed to a floor or ceiling of an indoor space of a square or rectangular plane or the wall body 40;
Sound insulation plate 10 fixed to the stud 20; configured to include,
The sound insulation plate 10 is non-parallel for uniform sound diffusion, characterized in that the dance of the stud 20 is adjusted or the installation position of the stud 20 is adjusted to be inclined with a square or rectangular plane. Sound insulation wall structure. 3. The method of claim 2,
A wall body 40 forming an indoor space wall structure of a square or a rectangular plane;
A stud 20 disposed spaced apart from each other and fixed to a floor or ceiling of an indoor space of a square or rectangular plane or the wall body 40;
Sound insulation plate 10 fixed to the stud 20; configured to include,
The vibration damper 50 is further installed between the stud 20 and the sound insulation plate 10 so that the thickness of the vibration damper 50 is adjusted so that the sound insulation plate 10 is inclined with a square or rectangular plane. Non-parallel sound insulation wall structure in the room for uniform sound diffusion. 4. The method according to claim 3 or 4,
Sound absorbing layer (30) formed between the wall body 40 and the sound insulation plate (10); The non-parallel sound insulation wall structure of the room for uniform sound diffusion, characterized in that further comprises. 5. The method according to any one of claims 1 to 4,
The non-parallel sound insulation wall structure of the room for uniform sound diffusion, characterized in that the diffuser (60) is further attached to the surface of the sound insulating plate (10). 5. The method according to any one of claims 1 to 4,
The non-parallel sound insulation wall structure of the room for uniform sound diffusion, characterized in that the wall is further attached to the sound insulating plate (10) surface. In buildings partitioned by walls to form a square or rectangular planar interior,
The wall portion inside the interior space is finished with a non-parallel sound insulation wall structure of the room according to any one of claims 1 to 4,
Non-parallel interior finishing structure, characterized in that the floor portion is finished with a flat sound insulation floor and the ceiling portion is finished with an inclined sound insulation ceiling to finish the floor and ceiling in a non-parallel structure.

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