JPH06229039A - Variable sound device for room - Google Patents

Abstract

(57) [Summary] [Object] To provide a room acoustic variable device that does not require an extra storage space and can be used in a relatively small space. [Structure] A plurality of wall pairs 5 each including a pair of two wall bodies 3 having a sound reflecting function are arranged along the skeleton 1, and both ends of each wall pair 5 and a joint portion A are hinged 4. A wall surface is formed by attaching the wall surface to the guide rail 2 via the guide rail 2, and the joint portion A of each wall body pair 5 is moved along the guide rail 2 to change the surface shape of the wall surface to a shape having a sound diffusion effect. A room acoustic variable device that is freely configured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a room acoustic variable device installed to change a room acoustic effect.

[0002]

2. Description of the Related Art As represented by multipurpose halls, there are many spaces that are designed for various purposes. In such a space, it is desired that the acoustic effect in the room can be changed according to the purpose of use. When listening to music such as a concert, it is desirable to create a space where sound diffuses to some extent and has a lingering sound. Therefore, conventionally, a method is known in which the shape of the wall surface and the sound absorption characteristics are changed to change the acoustic effect in the room. As one of them, there is a method of rotating a part of a wall in which the surface material and the back surface have different types and shapes. This method can be used in large-scale multipurpose halls, but in many cases, it is good to have intermediate performance of the intended use, and it is possible to change the acoustic performance according to the use purpose. Is few. Further, as another method, as shown in Japanese Patent Laid-Open No. 4-258431, by providing a storage groove vertically on the wall surface of a multipurpose hole or the like, and by allowing the reflection plate to be taken in and out of the storage groove,
There is one in which a sound absorbing plate and a reflecting plate can be selectively arranged according to the purpose of use of the room. Further, in many cases, the sound is electrically adjusted by using an electroacoustic apparatus.

[0003]

Of the above-mentioned conventional techniques,
The method of rotating a wall requires a storage space behind the wall and a mechanical device for controlling the rotation, which is difficult to use in a medium or small space. Further, the method of allowing the reflector plate to be put in and taken out from the storage groove requires a storage groove for storing the reflection plate on the back of the wall, and an extra space must be secured.
It is difficult to use in medium and small spaces. In addition, it is troublesome to put the reflector in and out. Further, when the electroacoustic apparatus is used, the characteristics of electroacoustic equipment such as an amplifier and a speaker are reflected, which is not preferable. Another problem is that it is difficult to give a natural feeling.

Therefore, the present invention has been made in view of the above-mentioned problems of the prior art. The purpose of the present invention is not to require an extra storage space but to be usable in a relatively small space. It is to provide a variable device.

[0005]

To achieve the above object, in the present invention, in a room acoustic variable apparatus for changing the acoustic effect in a room, a guide rail is provided on the skeleton of the room and has a sound reflection function. A plurality of wall body pairs each including a pair of wall bodies are arranged along the skeleton body, and a wall surface is formed by attaching both end portions and joint portions of each wall body pair to a guide rail via a hinge, By moving the joint portion of each wall pair perpendicularly to the guide rail, the surface shape of the wall surface can be freely changed to a shape having a sound diffusion effect.

[0006]

In the present invention described above, the guide rail is provided along the skeleton, and the plurality of wall pairs are attached to the guide rail via the hinges. Therefore, if the guide rail is arranged as close as possible to the skeleton and the deformation of the pair of walls is performed forward of the guide rail, the space between the skeleton and the wall is almost unnecessary. Therefore, the acoustic variable device can be installed even in a relatively small room, and the acoustic effect in the room can be appropriately changed.
Further, the surface shape of the wall surface can be easily changed by moving the joint portion of the pair of wall bodies along the guide rail. Specifically, it is performed by pulling the seam portions forward one by one or by pushing the wall bodies arranged on both sides or one side of the wall surface to the center. In particular, pressing both sides or one side of the wall surface is convenient because the shapes of all the wall pairs are changed at once. In this way, by changing the shape of the wall surface, the wall surface has a sound diffusion effect, and in particular, it is possible to provide a space suitable for playing musical instruments.

[0007]

Embodiments of the present invention will be described with reference to the drawings. Figure 1
FIG. 2 is a conceptual plan view of a room acoustic variable device according to the present invention, and FIG. 2 is a perspective view thereof. Guide rails 2 are provided above and below the frame 1 of the building. This guide rail 2
A plurality of wall body pairs 5 each including a pair of wall bodies 3 are attached to each other via a hinge 4. The wall 3 is made of an acoustically reflective material as a surface material. For example, various materials such as stone, concrete, glass, and metal can be used. However, if you want to make a specific surface sound absorbing, use a material that meets the requirements.

The pair of wall bodies 5 are attached to the guide rail 2 via hinges 4 at both ends and the joint portion A. Then, the plurality of wall body pairs 5 are arranged along the body 1 to form a wall surface inside the structural wall. Here, in the figure, the guide rails 2 are respectively arranged at the upper end and the lower end of the wall body 3, but may be arranged at only one end as long as the wall body 3 can be supported.

The height of the wall 3 may or may not match the ceiling height. Further, if the guide rail 2 is arranged close to the skeleton 1, the space between the skeleton 1 and the wall 3 is almost eliminated. In this way, since no extra space is required when installing the room acoustic variable device, it is possible to install even in a relatively small room. On the other hand, in the case of a relatively large-scale room, some space may be provided between the guide rail 2 and the body 1.

Next, the operation of the indoor acoustic variable device of the present invention will be described. First, a case of using for a general purpose such as a lecture will be described with reference to FIGS. 1 (a) and 2 (a). In this case, the shape of all the wall pairs 5 is flat. In this way, the space formed by the wall surfaces composed of the plurality of wall body pairs 5 becomes a rectangle as a whole as shown in FIG.
Next, a case where a space having diffusivity suitable for playing musical instruments is constructed will be described with reference to FIGS. 1B and 2B. In this case, the seam portion A having the hinge 4 of the wall body pair 5 is pulled out forward to form the wall body pair 5 into a triangular prism shape. At this time, if a space is provided between the frame 1 and the wall 3, the wall pair 5 can be formed in a triangular prism shape by retracting the joint portion A rearward.

It is preferable that the triangular prism is shaped so as to protrude from the guide rail 2 forming the bottom side by about 15% of the width (W) of the wall pair 5. When a sound wave is incident on the wall surface formed in this way, when the wavelength λ is W or less, specular reflection occurs and a diffusion effect is obtained. For example, 100Hz
To obtain a diffusion effect for the above sounds, W = 3.
The width of one wall 3 may be about 4 m and about 1.8 m.
If the wall surface is changed to such a surface shape, sound diffuses from the wall surface, and a space with a lingering sound can be constructed. Especially, the space is suitable for listening to music such as concerts.

In order to change the shape of the wall surface in the room, the center (joint portion A) of each wall body pair 5 is pulled forward one by one, or the wall bodies arranged on both sides or one side of the guide rail 2 are arranged. Press 3 to the center. Particularly, it is convenient to press the wall bodies 3 on both sides or one side because the shapes of all the wall body pairs 5 are changed at once. The power at this time may be manual or mechanical.

According to the above embodiment, the acoustic condition in the room can be easily changed by changing the surface shape of the room. As a result, for example, it is possible to appropriately change to a space with a lingering sound, which is suitable for listening to music. Further, since a large-scale mechanical device is not necessary and a storage space is not required, it can be used in a relatively small space.
For example, it can be applied to a listening room such as a house. Furthermore, since it also serves as the interior finish, if it is unitized, the construction period can be shortened and the cost can be reduced.

[0014]

According to the present invention, the acoustic variable device can be installed without taking up an extra space even in a relatively small room. Further, the surface shape of the wall surface can be easily changed by vertically moving the joint portion of the pair of wall bodies. In this way, by changing the shape of the wall surface, the wall surface has a sound diffusion effect, and in particular, a space suitable for playing musical instruments can be provided.

[Brief description of drawings]

FIG. 1 is a conceptual plan view of a room acoustic variable device of the present invention, in which (a) is before shape change and (b) is after shape change.

FIG. 2 is a perspective view of a room acoustic variable device of the present invention,
(A) is before shape change, (b) is after shape change.

[Explanation of symbols]

 1 frame 2 guide rail 3 wall 4 hinge 5 wall pair

Claims (1)

[Claims] 1. A room acoustic variable device for changing a sound effect in a room, wherein a guide rail is provided on a skeleton in the room, and a pair of wall bodies having a pair of wall bodies having a sound reflecting function is constructed as a skeleton body. A plurality of wall units are arranged along the wall, and the wall sections are formed by attaching both ends and joints of each pair of walls to the guide rails via hinges, and the joints of each pair of walls are moved vertically to the guide rails. By so doing, the surface acoustic shape of the wall surface can be freely changed to a shape having a sound diffusion effect.