JPH046829B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for adjusting the indoor sound field characteristics of an acoustic studio or the like. By installing a large number of units with the same external appearance on the indoor surface and exposing the front or back sides of the units according to the required sound field characteristics, it is possible to create a unified interior design and improve the aesthetic aesthetics of the room. It is.

[Conventional technology]

Traditionally, in sound studios etc., in order to adjust the sound field characteristics such as sound absorption and reflection properties in the room,
Sound-absorbing materials such as glass wool are installed on the walls and ceilings of rooms, and the amount of sound-absorbing material used is increased or decreased depending on the required characteristics, or sound-absorbing materials and reflective materials are installed in an appropriate ratio. There is.

[Problems to be solved by the invention]

However, in the case of such a sound field adjustment method, it is necessary to adjust the sound field according to the purpose of use of the room, the preferences of users such as listeners and players, and the type of sound source and music.
When attempting to finely adjust the sound field characteristics, it becomes necessary to remove or replace the sound-absorbing material that has been installed, resulting in the inconvenience that the appearance of the room changes each time. Furthermore, when sound-absorbing and reflective materials are used together, there is a problem in that the presence of the sound-absorbing and reflective materials can be clearly distinguished from their appearance, and in any case, this problem tends to spoil the aesthetics of the room. It was happening.

[Means for solving problems]

In this invention, a large number of units are used, each having a sound-absorbing surface and a reflective back surface, and the appearance of the front and back surfaces being the same, and by exposing the front or back surfaces of each of these units depending on the required sound field characteristics. , the sound field characteristics can be adjusted arbitrarily, without changing the appearance of the wall surface, and it is not possible to distinguish between sound-absorbing and reflective materials from the outside, making it possible to finish the room with a unified design. That's what I do.

A detailed description will be given below with reference to the drawings.

FIG. 1 shows an example of a unit used in the sound field adjustment method of the present invention, and reference numeral 1 in the figure is a substrate. This board 1 consists of a base plate 2 made of verticle board, round plywood, gypsum board, wood wool cement board, etc., and a wooden board affixed to one side of this base plate 2 via a backing material 3 as necessary. It is composed of a plate 4. The wood veneer 4 is the back material of this unit, and is made of rotary veneer or sliced veneer with a thickness of about 0.2 to 0.4 mm, and is reinforced with synthetic fiber non-woven fabric or Japanese paper. The base plate 2 is lined with a breathable backing material 3 made of a material such as the like, and is adhered to the base plate 2.

Further, a frame body 5 is attached to the other side of the base plate 2. This frame body 5 is a rectangular frame having the same outer circumference as the outer circumference of the base plate 2, and is usually made of wood such as stainless steel. It is firmly fixed to the plate 2.

The rectangular space formed by the frame 5 and the base plate 2 is lightly filled with a porous sound absorbing material 6 such as Dallas wool, rock wool, felt, or resin foam. The thickness of the sound absorbing material 6 is determined according to the sound absorbing properties required for the unit, and is usually selected from 25 mm, 50 mm, 75 mm, etc.
Further, since the bulk specific gravity of the sound absorbing material 6 is also related to the sound absorbing property, a material that similarly matches the required sound absorbing performance is selected.

Further, a plate-shaped honeycomb material 7 is attached to the frame 5 so as to press down the sound absorbing material 6.
The honeycomb material 7 is made by combining resin-impregnated hardened paper and thin aluminum plates in a nest-like shape, and the honeycomb part 8 in the center and the frame part 9 in the outer periphery are integrated. In addition to matching the opening direction of the honeycomb in the horizontal direction, the frame portion 9 is aligned with the frame body 5.
It is fixed to the frame body 5 by adhering to the frame body 5 by means of adhesive or the like.

Further, a breathable backing material 10 such as a synthetic fiber nonwoven fabric or Japanese paper is integrally attached to the side surface of the Anicum material 7 on the sound absorbing material 6 side, and a wooden veneer 11 is attached to the reflective side surface. have been reattached in the same way. The backing material 10 is used to reinforce the honeycomb shape of the honeycomb material 7 and to prevent the honeycomb material 7 from warping due to adhesion of the wooden veneer 11, and is preferably as thin as possible while ensuring sufficient air permeability. The wood veneer 11 is the surface material of this unit, and from the viewpoint of breathability, it is preferably thin. A material whose back surface is reinforced with an adhesive sheet, non-woven fabric, etc. and whose breathability is ensured by drilling, etc. is used, and it is desirable that the open area ratio is 30% or more, preferably 40% or more. Furthermore, the wooden veneer 11 serving as the front surface material and the wooden veneer 4 serving as the back surface material are made of the same tree species, so that both the front and back surfaces of the unit have the same appearance.

Further, a frame 12 is attached to the outer periphery of the substrate 1, frame 5, honeycomb material 7, etc. so as to cover this. The picture frame 12 is made of wood such as spruce, and is fixed to the frame 5 and the substrate 1 with nails or the like. Moreover, on one side of this picture frame 12,
A protruding strip 13 for attaching the unit to a wall surface is formed in its longitudinal direction, and a picture frame 1 opposite thereto is formed.
2 also has a groove 14 formed in its longitudinal direction for attachment to the wall surface of the unit.

In such a unit A, the surface on the wooden veneer 11 side that is the surface material has a sound absorption coefficient (JIS-A-1409) of 0.7.
The sound absorbing surface B has a sound absorption coefficient of about 1.0 to 1.0, and the surface on the side of the wooden veneer 4 serving as the back material is a reflective surface C having a sound absorption coefficient of about 0 to 0.3. Also, the dimensions of unit A are, for example, 1800
It is said to be a standard size that can be modularized, such as mm x 450 mm, 450 mm x 450 mm, and 1800 mm x 900 mm.

Next, a method for adjusting a sound field using such a unit A will be explained, but first a method for attaching the unit A to a wall will be explained.

FIG. 2 shows an example of how to attach the unit A to the side surface. Reference numeral 21 in the figure indicates studs serving as the base, and the studs 21 are fixed to a concrete wall 22 at intervals of, for example, 900 mm. To these studs 21..., horizontally extending body greens 23... are attached with nails. These torso green 23
The surface of the unit is made of wood veneer 1
A wooden veneer with the same appearance as 1 is attached. Furthermore, a groove 24 that fits into the convex strip 13 of the picture frame 12 of the unit is formed on the lower side surface of each of the body frames 23, and a groove 24 that fits into the convex strip 13 of the frame 12 of the unit is formed on the upper side surface.
A protrusion 25 is formed which fits into 4.

Next, unit A is attached to such a body rim 23...
Install them in order. First, tilt the picture frame 12 of unit A diagonally with the protrusion 13 facing upward, and
3 into the concave groove 24 of the body rim 23, and unit A.
While lifting the entire unit upward, fit the groove 14 of the frame 12 of the unit A into the convex strip 25 of the lower body rim 23, and then lower the entire unit A downward to complete the installation. In this way, units A are sequentially attached to the entire wall surface.

Next, the sound absorbing surface B and the reflecting surface C of the unit A are appropriately selected and exposed so as to obtain the desired sound field characteristics. To do this, while measuring the sound field characteristics, remove any unit A, turn it over, and reinstall it. Unit A
To remove the unit A from the body rim 23, lift the unit A upward, release the engagement between the protrusion 25 of the body rim 23 and the groove 14 of the unit A, and then pull out the lower part of the unit A toward you. can be removed. Reinstallation of unit A is performed in the same manner as before.

By installing a large number of units A attached to the walls and ceilings of the room in this way so that the sound absorbing surfaces B or reflecting surfaces C are exposed as appropriate, the desired sound field characteristics can be finally obtained. It will be done. The ratio of the sound absorbing surface B and the reflecting surface C of the unit A is determined according to the desired sound field characteristics, and the arrangement of the sound absorbing surface B and the reflective surface C is not particularly determined, but depends on the type of sound source, Various variations can be considered depending on the purpose of the room, user preference, etc., but for example, a method may be considered in which the reflective surfaces C are arranged in a concentrated manner and the sound absorbing surfaces B are arranged in a dispersed manner. Furthermore, the larger the area on which these units A are attached, the greater the degree to which the sound absorption and reflection properties can be adjusted, and for this reason, it is preferable to attach them, for example, to the entire wall or ceiling surface of the room.

[Effect]

In this method of adjusting the indoor sound field, the sound field characteristics can be changed in various ways by simply turning over a part of unit A, making it extremely easy to achieve the desired sound field characteristics. can be done. Also, one side of unit A is sound absorbing surface B,
The other surface is reflective surface C, and both sound absorbing surface B and reflective surface C have the same wood grain pattern, so there is no change in appearance even if either sound absorbing surface B or reflective surface C of unit A is exposed. The entire surface of the walls and ceiling is composed of the same wood grain pattern, creating a beautiful and unified design, which has great practical effects.

[Other Examples]

Fig. 3 shows a locking means in place of the protruding strip 13 on the frame 12 of unit A, in which a steel ball 26 is biased against the frame 12 by a coil spring 27 so that it can move freely in and out during installation. The configured locking metal fitting 28 is embedded. If this locking metal fitting 28 is used, it becomes easier to attach and detach the unit A and the furring 23.

〔Effect of the invention〕

As explained above, in the indoor sound field adjustment method of the present invention, the front surface is sound absorbing, the back surface is reflective, and
A large number of units with the same appearance on the front and back sides are installed on the indoor surface, and the front or back sides of the units are exposed depending on the required sound field characteristics, so the sound field characteristics can be adjusted arbitrarily and easily. The interior appearance and design of the room do not change, and the interior can be finished with a uniform design that is rich in aesthetics.

[Brief explanation of drawings]

Fig. 1 is a schematic cross-sectional view showing an example of a unit used in the sound field adjustment method of the present invention, Fig. 2 is a schematic cross-sectional view showing an example of a method for attaching the unit to a wall surface, and Fig. It is a schematic sectional view showing an example of a locking means. A...unit, B...sound absorbing surface, C...reflecting surface.

Claims (1)

[Scope of Claims] 1. A large number of units with sound-absorbing surfaces, reflective surfaces, and the same appearance on the front and back surfaces are installed on indoor surfaces such as walls and ceilings, and are adapted to meet the required indoor sound field characteristics. The front or back side of these units can be
An indoor sound field adjustment method characterized by selective exposure. 2. The indoor sound field adjustment method according to claim 1, wherein the front and back surfaces of the unit are made of wood veneer with the same appearance.