JPS6328480Y2 - - Google Patents

Description

[Detailed explanation of the idea] In the audio room, a sound-absorbing layer is attached to the partition wall from other living rooms, other homes, or external spaces for the purpose of preventing noise pollution, and to enhance the effect of playing musical instruments and listening to stereo. Acoustic adjustments will be made.

This acoustic adjustment is performed by selecting the sound absorption capacity per unit area of the sound absorption layer, and at the construction stage, it is adjusted according to the characteristics of the main instrument in the audio room (for example, the piano in a piano room). Therefore, the optimum reverberation time for the principal instrument is obtained.

However, the optimal reverberation time varies depending on the type of instrument (percussion instrument, string instrument, wind instrument), and even within the same type. So,
Depending on the instrument used, it could produce harmful (harsh) reverberations, or the sound could suddenly drop and become hollow, which could not be called desirable.

Therefore, for example, as described in Japanese Utility Model Publication No. 52-56001, a sound absorbing body is constructed by filling a hollow flat cylindrical body with a sound absorbing material and covering this body with a flexible cloth. There are vertical blinds or horizontal blinds that are arranged in parallel and the angles of the individual sound absorbers can be changed to adjust the degree of sound absorption. The louver is made of sound absorbing material, and while the sound absorbing material is pulled out at regular intervals, the total amount of the sound absorbing material that performs the sound absorbing action is changed in proportion to the change in the extension range of the pulled out material.
Since the degree of sound absorption is uniformly adjusted by changing the mounting angle of the stretched sound absorbing material all at once, it is not possible to change the total amount of sound absorbing material without changing the extension range of the drawer. In addition, it is not possible to change the dispersion density of the sound absorber at any position within the drawer extension range, and therefore the adjustable range of the absorption amount is narrow, making it difficult to adjust the sound absorption volume depending on various musical instruments or the arrangement of these instruments. There was a problem in that it was not possible to accurately adjust the acoustics to obtain the optimal reverberation time depending on the situation.

In other words, the dispersion density of the stretched sound absorbing material is constant, so even if there are locations that require more sound absorbing material and locations that require less sound absorbing material depending on the arrangement of the instrument, It is impossible to arrange the sound absorbing materials in this way, and even if you try to solve this problem by changing the mounting angle of the sound absorbing materials, all the mounting angles of the sound absorbing materials will be changed at once. There is a problem in that it is not possible to adjust the amount of absorption partially, making it impossible to make accurate acoustic adjustments.In addition, adjusting the amount of absorption by changing the mounting angle of the sound-absorbing material is a situation in which the sound-absorbing effect is performed on both the front and back sides of the sound-absorbing material. It is possible to adjust only the sound absorbing effect on one side of the sound absorbing material, and it is not possible to change the total amount of the sound absorbing material within a certain range of extension. It is not possible to adjust the amount of absorption to a state where the amount of absorption is greater than the state where the sound absorption effect is performed, or to a state where the amount of absorption is even smaller than the state where the sound absorption action is performed on only one side of the sound absorbing material, and it is difficult to accurately adjust the amount of absorption for various instruments. There was a problem in that it was not possible to adjust the acoustics over a wide range to accommodate the

This invention was made in view of the above practical method, and by devising the connection structure of the sound absorbing body,
We provide an acoustic adjustment device that not only allows you to change the total amount of sound absorbing material in a certain drawer expansion range, but also allows you to change its dispersion density at any position, and allows you to adjust the amount of absorption over a wide range. Alternatively, it is an object of the present invention to enable accurate acoustic adjustment so as to obtain an optimal reverberation time depending on the arrangement of these musical instruments.

The characteristic structure of this invention to achieve the above purpose is as follows:
In the above-mentioned sound adjustment device, a sound absorbing material is loaded into a frame formed into a box shape to constitute a unit sound absorber for sound adjustment, and a plurality of the unit sound absorbers are mounted on a guide rail installed in the room. let me hold it,
The unit sound absorbers are mounted so that they can be changed in position and stopped at that position along the guide rail, and the unit sound absorbers are arranged so that the adjacent unit sound absorbers face each other with a distance from each other, and the adjacent unit sound absorbers The sound-absorbing materials of the body are connected to each other so that the mutual spacing can be changed individually within a certain range between the positions where the sound-absorbing materials face each other and the positions where they are in close contact with each other, and the sound-absorbing materials are equipped so that they can be pulled out and expanded and contracted along the guide rail. This configuration provides the following effects.

In other words, a plurality of sound absorbing units loaded with sound absorbing material are connected together and are installed so that the drawers can be extended and contracted along a guide rail installed in the room. Since a plurality of unit sound absorbers are attached so that the position can be changed and the unit sound absorbers can be stopped at that position, and the mutual spacing position can be changed individually, even if the range of extension and extension of the drawer is constant, it is within the possible range. By changing the mutual spacing position, the total amount of sound-absorbing material can be changed as appropriate, and the dispersion density of sound-absorbing material can also be increased or decreased at any position, making it possible to adjust the arrangement of various musical instruments. Acoustic adjustments can be made accurately to obtain the optimal reverberation time depending on the situation.

Furthermore, when the mutual spacing between adjacent unit sound absorbers is partially changed so that the sound absorbing materials of the unit sound absorbing bodies come into close contact with each other in a posture facing each other, the sound absorbing action of the sound absorbing materials on the opposing surfaces is stopped. For example, if three adjacent unit sound absorbers are placed in close contact with each other, the same sound absorption effect as if one unit sound absorber is attached can be achieved, and many unit sound absorbers can be attached. Even if the unit is pulled out and expanded, adjacent unit sound absorbers are spaced apart and positioned facing each other, and all the sound absorbers perform sound absorption action, resulting in a large amount of absorption. Acoustic adjustments can be made accurately so as to obtain the optimum reverberation time for various musical instruments over a wide range of conditions, including a state in which the amount of absorption is small by bringing a suitable number of unit sound absorbers into close contact with each other.

Therefore, even if the expansion range is constant, the total amount of unit sound absorbers and their dispersion density can be changed arbitrarily, and the amount of absorption at any position can be adjusted over a wide range, so the overall As a result, it has been possible to provide a sound adjustment device that can accurately adjust sound so as to obtain an optimal reverberation time depending on various musical instruments or the arrangement of these musical instruments.

Next, an embodiment of the present invention will be described based on the drawings.A is a unit sound absorbing body (hereinafter referred to as unit body) for sound adjustment, which is constructed by loading a sound absorbing material 2 inside a box-shaped frame 1. A plurality of units a are held by a guide rail 4 laid on the front side of the side wall 8 of the audio room, and mounted so that they can be changed in position along the guide rail 4 and stopped at that position. At the same time, each unit a
The sound absorbing material 2 of the adjacent unit bodies a and the position where the adjacent unit bodies a are separated from each other and face each other.
They are connected in parallel via a flexible string-like body 3 of an appropriate length so that their mutual spacing can be changed individually within a certain range, ranging from a position where they face each other to a position where they are in close contact with each other, and are connected along the front surface of the side wall 8. The drawer is held so that it can be expanded, expanded and contracted in any direction.

More specifically, it is as follows.

The frame 1 is made by combining extruded aluminum materials, and in the case of the plurality of units a... at both ends in the juxtaposed direction, a reflecting plate 1' protects the sound absorbing material 2 from the outside. While the sound absorbing material 2 is integrally formed in a continuous manner so as to cover the sound absorbing material 2, the sound absorbing material 2 is of a both-side open type where both side surfaces of the sound absorbing material 2 are exposed except at both ends.

The sound absorbing material 2 is preferably glass wool, which is compressed to a high density (for example, 45 to 120 kg/m ³ ).

The flexible string-like body 3 that connects the adjacent units a, a may be a chain, a wire, a synthetic fiber rope, or the like. The flexible string-like body 3 has adjacent unit bodies a,
It is preferable to provide them near the upper end and near the lower end of a. However, instead of the flexible string-like body 3, a cloth-like body may be used to connect the adjacent units a, a, or they may be directly connected using hooks or the like.

The guide rail 4 is preferably provided horizontally along the front surface of the side wall 8 at two locations on the ceiling surface 9 and the floor surface 10, and over the entire width of the side wall 8, and the upper rail 4 is provided at each unit a. It is preferable to use a type in which each unit a is suspended and supported by a roller 5 pivotally supported at the upper end thereof being mounted and fitted in a freely rolling manner. It may be of a type in which the shaft-like body 6 protruding from the lower end of the unit body a is simply slidably fitted. Note that the lower rail 4 may be omitted. It is preferable that the vertical length of each unit a is approximately equal to the length between the ceiling surface 9 and the floor surface 10.

Reference numeral 7 denotes a drawer handle attached to the vertically intermediate portion of the leading unit a.

The instructions for use are as follows.

If the reverberation time of the musical instrument you are using is too long and harsh echoes occur due to the sound absorption effect of the sound absorption layer provided on the side wall 8, pull out the parallel connected unit groups a and separate each unit. The sound absorbing material 2 of a is exposed to enhance the sound absorbing effect, and the reverberation time is adjusted to be optimal. If the sound absorption effect becomes too high if all of the units a are spaced apart from each other, the optimum state can be achieved by placing two or three adjacent units a in close contact with each other. Is possible.

This acoustic adjustment device can be implemented relatively easily and economically even in existing buildings, and changes in room size can be dealt with in a wide range of ways by selecting the number of units a to be used.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of drawings]

The drawings show an embodiment of the sound adjustment device according to the present invention, in which FIG. 1 is a partially cutaway vertical side view, FIG. 2 is a partially cutaway vertical front view, and FIG. 3 is a partially cutaway cross-sectional plan view. 1...Frame, 1'...Reflector, 2...Sound absorbing material, 3
...Flexible string-like body, 4...Guide rail, a...Unit sound absorbing body.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A sound adjustment device that is installed at a height range from approximately the floor to the ceiling of the room to adjust the sound generated in the room, and which is a frame formed approximately in the shape of a box. A sound absorbing material 2 is loaded into a unit 1 to form a unit sound absorbing body a for sound adjustment, and a plurality of unit sound absorbing bodies a are held by a guide rail 4 installed in the room, and a plurality of unit sound absorbing bodies a are held along the guide rail 4. The unit sound absorbers a are mounted so that the position can be changed and stopped at that position, and each of the unit sound absorbers a,
mutually separately within a certain range between a position where adjacent unit sound absorbers a are spaced apart from each other and face each other, and a position where sound absorbing materials 2 of adjacent unit sound absorbers a are in close contact with each other in a posture facing each other. A sound adjustment device characterized in that the device is connected so that the interval position can be changed, and is installed along the guide rail 4 so as to be freely extended and contracted. 2. The sound adjustment device according to claim 1, wherein the sound absorbing material 2 is high-density glass wool. 3. The sound adjustment device according to claim 1 or 2, wherein the means for connecting the plurality of unit sound absorbers a is a flexible string-like body 3 having an appropriate length. 4. Scope of Utility Model Registration Claims: Among the plurality of unit sound absorbers a, the unit sound absorber a located at the end in the connection direction has a reflecting plate 1' attached to the surface on the end side in the connection direction. The sound adjustment device according to any one of Items 1 to 3.