WO2020183689A1 - 音響調整棚 - Google Patents
音響調整棚 Download PDFInfo
- Publication number
- WO2020183689A1 WO2020183689A1 PCT/JP2019/010485 JP2019010485W WO2020183689A1 WO 2020183689 A1 WO2020183689 A1 WO 2020183689A1 JP 2019010485 W JP2019010485 W JP 2019010485W WO 2020183689 A1 WO2020183689 A1 WO 2020183689A1
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- WO
- WIPO (PCT)
- Prior art keywords
- acoustic
- sound absorbing
- shelf
- acoustic adjustment
- compartments
- Prior art date
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/99—Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
Definitions
- the present invention relates to an acoustic adjustment shelf configured to make acoustic characteristics adjustable.
- acoustic rooms such as studios, listening rooms, and halls
- sound absorbers, acoustic reflectors, acoustic diffusers, etc. are used along the wall surfaces of the acoustic rooms, such as side walls and ceilings.
- Acoustic adjustment members may be installed.
- the sound absorbing body has a sound absorbing characteristic that makes it possible to absorb the input sound. Examples of such a sound absorbing body include a sound absorbing cushion made of a porous material such as glass wool or rock wool.
- the acoustic reflector has an acoustic reflection characteristic that reflects each input sound. Examples of the acoustic reflector include an acoustic reflector.
- the acoustic diffuser is configured to have a plurality of columnar portions configured to be able to reflect such sound in order to provide an acoustic diffusion characteristic that diffuses the input sound.
- the acoustic diffuser also has acoustic reflection properties.
- Such an acoustic adjustment member is installed as a single unit so as to be exposed in the acoustic rooms and cover the wall surface.
- the acoustic conditioning member may also be mounted on the wall as a single unit so that it is exposed in the acoustic chambers. (See, for example, Patent Document 1.)
- acoustic adjustment members such as sound absorbers, acoustic reflectors, and acoustic diffusers alone in the acoustic rooms and to cover the wall surface, and to expose the acoustic adjustment members alone in the acoustic rooms.
- Installation work such as wall mounting work is a large scale. Therefore, the work of re-installing the once installed acoustic adjustment member in order to change the acoustic characteristics such as the sound absorption characteristic, the acoustic reflection characteristic, and the acoustic diffusion characteristic becomes troublesome.
- the acoustic adjusting members such as the sound absorber, the acoustic reflector, and the acoustic diffuser are inorganic, the appearance of the acoustic adjusting member is not excellent.
- the acoustics in which the acoustic adjusting member is installed alone are various.
- the aesthetics of the interior will be poor. In particular, this is a problem in consideration of the increasing demand for improving the acoustic characteristics by installing the acoustic adjustment member even in a room of a general household.
- the present invention provides an acoustic adjustment shelf capable of easily adjusting the acoustic characteristics and improving the aesthetics of the space for which the acoustic characteristics are to be adjusted in consideration of such a situation.
- the acoustic adjustment shelf is a shelf member having a plurality of compartments and a characteristic of sound that is detachably installed in at least one of the plurality of compartments and is input. It is provided with an acoustic adjusting member configured to change.
- the acoustic characteristics can be easily adjusted, and the aesthetics of the space for which the acoustic characteristics are to be adjusted can be improved.
- FIG. 1 is a perspective view schematically showing an acoustic adjustment shelf according to the first aspect of the present embodiment.
- FIG. 2 is a front view schematically showing an acoustic adjustment shelf according to the first aspect of the present embodiment.
- FIG. 3 is a cross-sectional view taken along the line AA of FIG.
- FIG. 4 is a cross-sectional view taken along the line BB of FIG.
- FIG. 5 is a front view schematically showing an acoustic adjustment shelf according to a second aspect of the present embodiment.
- FIG. 6 is a front view schematically showing an acoustic adjustment shelf according to a third aspect of the present embodiment.
- FIG. 7 is a front view schematically showing the acoustic adjustment shelf according to the fourth aspect of the present embodiment.
- FIG. 1 is a perspective view schematically showing an acoustic adjustment shelf according to the first aspect of the present embodiment.
- FIG. 2 is a front view schematically showing an acoustic adjustment shelf according to the
- FIG. 8 is a front view schematically showing the acoustic adjustment shelf according to the fifth aspect of the present embodiment.
- FIG. 9 is a front view schematically showing the acoustic adjustment shelf according to the sixth aspect of the present embodiment.
- FIG. 10 is a graph showing the relationship between the acoustic frequency and the sound absorption coefficient in the acoustic adjustment shelf according to the first to fifth embodiments.
- the acoustic adjustment shelf is configured to be installable in a space for which acoustic characteristics are to be adjusted (hereinafter, referred to as "acoustic adjustment space"), and is configured to be able to adjust the acoustic characteristics of the acoustic adjustment space.
- the acoustic adjustment space may be a space defined by a floor surface, a wall surface, or the like of a room or the like.
- the acoustic adjustment space should be a space where people can enter.
- Such an acoustic adjustment space may be a space that is substantially closed from the outside, or a space that is partially open to the outside and partially closed from the outside.
- a room having an acoustic adjustment space includes a studio, a listening room, an acoustic room such as a hall, a conference room, an office room, an entrance hall, a waiting room, and a room of a general house. And so on.
- the acoustic adjustment room may, of course, be other than the one illustrated here.
- the acoustic adjustment space can be a space based on conditions other than the conditions described here.
- the basic configuration of the acoustic adjustment shelf is as follows. As shown in FIGS. 1 to 9, the acoustic adjustment shelf includes a shelf member 10 having a plurality of compartments 11 and 12.
- the posture of the shelf member 10 installed as shown in FIGS. 1 to 8 is defined as the basic posture.
- the posture of the shelf member 10 installed so as to lie down from the basic posture is defined as the sideways posture.
- the depth direction, width direction and height direction of the shelf member 1 are defined based on the basic posture. That is, even when the shelf member 10 is installed in a posture other than the basic posture, for example, in a sideways posture, the depth direction, the width direction, and the height direction defined in the basic posture are used as they are.
- the actual depth direction, width direction, and height direction when the shelf member 10 is installed in the sideways posture are the depth direction, the height direction, and the width direction, respectively, according to the standard of the basic posture. Is called.
- the depth direction, width direction, and height direction of the acoustic adjustment shelf are the same as the depth direction, width direction, and height direction of the shelf member 10, respectively.
- the bottom portion 10a of the shelf member 10 in the height direction faces the floor surface F of the acoustic adjustment chamber R, and the top portion 10b of the shelf member 10 in the height direction is acoustic. It faces the ceiling surface (not shown) of the adjustment room R.
- the shelf member 10 is installed so that its bottom portion 10a is in contact with the floor surface F of the acoustic adjustment chamber R in the basic posture. That is, the shelf member 10 is placed on the floor surface F of the acoustic adjustment chamber R in the basic posture. Further, the shelf member 10 can be arranged along the side wall surface W in the basic posture.
- the present invention is not limited to this, and the shelf members are installed so that the bottom thereof is spaced in the height direction with respect to the floor surface of the acoustic adjustment chamber and the back surface thereof is attached to the side wall surface of the acoustic adjustment chamber. You can also do it.
- the acoustic adjustment shelf includes acoustic adjustment members 20 and 30 configured to change the characteristics of the input sound.
- the acoustic adjusting members 20 and 30 are detachably installed in at least one of the plurality of compartments 11 and 12.
- the acoustic adjusting member 20 can be an acoustic diffuser 20 having a plurality of columnar portions 21 each capable of reflecting the input sound.
- the acoustic adjusting member 30 can also be a sound absorbing cushion 30 configured to be able to absorb sound.
- the section 11 in which the acoustic diffuser 20 is installed is referred to as a diffusion section 11
- the section 12 in which the sound absorbing cushion 30 is installed is referred to as a sound absorbing section 12.
- the acoustic adjusting member is not limited to this.
- the acoustic adjusting member may be a sound absorbing body other than the sound absorbing cushion, an acoustic reflector such as an acoustic reflecting plate, or the like.
- the acoustic adjustment shelf can be provided with an additional acoustic adjustment member 40 configured to change the characteristics of the input sound.
- the additional sound adjusting member 40 is detachably installed on the back side of the shelf member 1 with respect to the sound diffuser 20 in the diffusion section 11.
- the additional sound adjusting member 40 is a sound absorbing cushion (hereinafter, referred to as “additional sound absorbing cushion” if necessary) 4 that is configured to be able to absorb sound.
- additional acoustic adjustment member is not limited to this.
- the additional acoustic adjusting member may be an acoustic diffuser, a sound absorber other than the sound absorbing cushion, an acoustic reflector such as an acoustic reflector, or the like. It is also possible not to install the additional sound adjustment member in the diffusion section. That is, the acoustic adjustment shelf may also have a diffusion section in which only the acoustic adjustment member is installed.
- the acoustic adjustment shelf has at least one of diffusion and sound absorption compartments 11 and 12.
- Such acoustic conditioning shelves can have both diffuse and sound absorbing compartments 11 and 12.
- the acoustic adjustment shelf can have only the diffusion compartment 11.
- the acoustic adjustment shelf may also have only the sound absorbing compartment 12.
- the acoustic adjustment shelf may have at least one of the diffusion and sound absorption compartments as well as a compartment in which no member is placed.
- each of the compartments 11 and 12 of the shelf member 10 is formed so as to extend in the depth direction.
- Each of the compartments 11 and 12 has a front opening 11a, 12a located in front of the shelf member 10, and a back opening 11b located on the back surface of the shelf member 10 so as to face the front opening 11a, 12a in the depth direction. It has 12b and.
- the front openings 11a, 12a of the compartments 11 and 12 are opened toward the space outside the acoustic adjustment shelf or the shelf member 10, particularly toward the space outside the acoustic adjustment shelf or the shelf member 10.
- at least one of the plurality of compartments may be closed at the back of the shelf member.
- the back plate can be arranged on the back side of the shelf member.
- each of the compartments 11 and 12 has storage spaces 11c and 12c extending in the depth direction between the front and the back of the shelf member 10.
- the storage spaces 11c and 12c extend in the depth direction between the front openings 11a and 12a and the back openings 11b and 12b.
- Each of the compartments 11 and 12 has peripheral surfaces 11d and 12d extending in the depth direction so as to surround the storage spaces 11c and 12c of the compartments 11 and 12.
- each of the peripheral surfaces 11d and 12d has bottom surfaces 11e and 12e located closer to the bottom 10a of the shelf member 10 and top surfaces 11f and 12f located closer to the top 10b of the shelf member 10.
- the peripheral surfaces 11d and 12d also have two side surfaces 11g and 12g located closer to both side portions 10c in the width direction of the shelf member 10, respectively.
- the cross-sectional areas of the plurality of compartments 11 and 12 orthogonal to the depth direction can be substantially equal to each other.
- the frontal shapes in the plurality of compartments 11 and 12 can be substantially similar to each other.
- the present invention is not limited to these.
- the area of the cross section in at least one of the plurality of sections may be different from the area of the cross section in the other section.
- the shape of the front view in at least one of the plurality of compartments may be different from the shape of the front view in the other compartments.
- the minimum width of each of the compartments 11 and 12 can be equal to or greater than the maximum depth or the average depth of the compartments 11 and 12.
- the minimum width of each of the compartments 11 and 12 is smaller than the maximum width of the shelf member 10.
- the minimum height of each of the compartments 11 and 12 may be equal to or greater than the maximum depth or the average depth of the compartments 11 and 12.
- the minimum height of each of the compartments 11 and 12 is smaller than the maximum height of the shelf member 10.
- the minimum width of at least one of the plurality of compartments can be made larger than the maximum depth or the average depth of the compartment.
- the minimum height of at least one of the plurality of compartments may be made larger than the maximum depth or the average depth of the compartment.
- each of the sections 11 and 12 can be formed in a substantially square shape when viewed from the front.
- the compartments 11 and 12 can also be formed in a substantially square shape in front view.
- Each of the compartments 11 and 12 can extend between the front and back of the shelf member 10 so as to have a substantially square cross section.
- the compartments 11 and 12 can also extend between the front and back of the shelf member 10 so as to have a substantially square cross section.
- the front view shape of each section is not limited to a substantially square shape or a substantially square shape.
- the front view shape in at least one of the plurality of compartments may be formed so as to have a substantially polygonal shape, a substantially circular shape, a substantially semicircular shape, a substantially fan shape, and other geometric shapes. it can.
- the shelf member 10 has one compartment 11, 12 or a plurality of units 13 having a plurality of compartments 11, 12 arranged in the width direction. , 14, 15 can be included. Further, the plurality of units 13 to 15 can be arranged in the height direction. However, the shelf member may have one compartment or only one unit having a plurality of compartments aligned in the width direction.
- At least one of the plurality of units 13 to 15 can have at least one diffusion compartment 11. At least one of the plurality of units 13 to 15 can have at least one sound absorbing compartment 12. At least one of the plurality of units 13 to 15 can have at least one diffusion compartment 11 and at least one sound absorbing compartment 12.
- the center in the width direction of the compartments 11 and 12 in one of the units 13 to 15 adjacent to each other in the height direction can be arranged so as to be offset in the width direction from the center in the width direction of the compartments 11 and 12 in the other side. ..
- the center in the width direction of the compartment in one of the units adjacent to each other in the height direction may be arranged so as to substantially coincide with the center in the width direction of the compartment in the other side.
- the first unit 13 having three compartments 11 and 12 arranged in the width direction and the two compartments 11 and 12 having two compartments 11 and 12 arranged in the width direction are provided. It has a second unit 14 adjacent to the first unit 13 near the top 10b in the height direction of the shelf member 10, and three compartments 11 and 12 arranged in the width direction, and has a relative to the second unit 14.
- a shelf member 10 including an adjacent third unit 15 near the top 10b in the height direction of the shelf member 10 is shown.
- the first unit 13 has two diffusion compartments 11 and one sound absorbing compartment 12.
- the second unit 14 has one diffusion compartment 11 and one sound absorbing compartment 12.
- the third unit 15 has one diffusion compartment 11 and two sound absorbing compartments 12.
- the shelf member is not limited to the configuration shown as an example in FIGS. 1, 2 and 5 to 9 as described above.
- Each unit 13, 14, 15 is a shelf member 10 so as to be spaced apart from the bottom plates 13a, 14a, 15a located closer to the bottom 10a of the shelf member 10 in the height direction with respect to the bottom plates 13a, 14a, 15a. It has top plates 13b, 14b, 15b located closer to the top 10b.
- the spacing between the bottom plates 13a to 15a and the top plates 13b to 15b of the units 13 to 15 is set so that the compartments 11 and 12 can be formed between them.
- the plurality of compartments 11 and 12 of each unit 13 to 15 are defined by the bottom plates 13a to 15a and the top plates 13b to 15b of the units 13 to 15 in the height direction.
- Each unit 13, 14, 15 extends between the bottom plates 13a, 14a, 15a and the top plates 13b, 14b, 15b of the units 13, 14, 15 and has a plurality of side plates 13c, which are located at intervals in the width direction from each other. It has 14c and 15c.
- the plurality of compartments 11 and 12 of each unit 13 to 15 are defined by a plurality of side plates 13c to 15c of the unit 13 to 15 in the width direction.
- the units 13 to 15 adjacent to each other in the height direction are combined so that the bottom plates 13a to 15a in one of the units 13 to 15 are in contact with the top plates 13b to 15b in the other side.
- one end of the bottom plates 13a to 15a and the top plates 13b to 15b in the plurality of units 13 to 15 may substantially coincide with each other in the width direction.
- the shelf members 10 can be installed so that one end in the width direction thereof abuts on the floor surface F of the acoustic adjustment chamber R in the sideways posture. That is, the shelf member 10 can be placed on the floor surface F of the acoustic adjustment chamber R in the sideways posture. Further, the shelf member 10 can be arranged along the side wall surface W in the sideways posture.
- the bottom plates 13a to 15a and the top plates 13b to 15b of each unit 13 to 15 are configured to be reversible in the width direction.
- the shelf member 10 substantially coincides with each other in the width direction at one end of the bottom plates 13a to 15a and the top plates 13b to 15b in the plurality of units 13 to 15.
- a part of one end of the bottom plates 13a to 15a and the top plate 13b to 15b in the plurality of units 13 to 15 in the width direction is different from these. It can be changed to a state in which it is displaced in the width direction with respect to a part of one end.
- At least one through hole communicating with the outside of the compartments 11 and 12 is formed on the peripheral surfaces 11d and 12d of at least one of the plurality of compartments 11 and 12 of the shelf member 10. be able to.
- the acoustic adjustment shelf can also adjust the acoustic characteristics by appropriately adjusting the number, size, arrangement position, shape, and the like of the through holes.
- the specific configurations of the acoustic adjusting members 20 and 30 may be as follows. As shown in FIGS. 1 to 9, the acoustic adjusting members 20 and 30 occupy a part or all of the storage spaces 11c and 12c in the compartments 11 and 12 where the acoustic adjusting members 20 and 30 are installed. Is placed in.
- each columnar portion 21 of the acoustic diffuser 20 is formed in an elongated shape.
- the plurality of columnar portions 21 may extend in substantially the same direction as each other.
- the direction substantially the same as the depth direction of the shelf member 10 is defined as the thickness direction
- the extending direction of the columnar portion 21 is defined as the vertical direction
- the thickness direction and the vertical direction are defined.
- the direction substantially orthogonal to the direction is defined as the lateral direction.
- the state of the acoustic diffuser 20 installed as shown in FIGS. 1 to 4 is defined as the vertical state.
- FIGS. 1 to 4 and 9 all of the acoustic diffusers 20 are in the vertical installation state, and in FIGS. 5 to 8, some of the acoustic diffusers 20 are among the plurality of acoustic diffusers 20.
- the remaining acoustic diffuser 20 among the plurality of acoustic diffusers 20 is in the vertical installation state, and is in the horizontal installation state described below. That is, the state of the remaining acoustic diffuser 20 installed as shown in FIGS. 5 to 8 is defined as the horizontal state.
- the acoustic diffuser 20 When the acoustic diffuser 20 is placed horizontally, the thickness direction, the vertical direction, and the horizontal direction of the acoustic diffuser 20 substantially coincide with the depth direction, the width direction, and the height direction of the shelf member 10, respectively.
- the acoustic diffuser 20 has two support portions 22 and 23 located at both ends in the vertical direction, that is, a first support portion 22 and a second support portion 23. Both ends of each columnar portion 21 in the extending direction are connected to two support portions 22 respectively. Such a plurality of columnar portions 21 are arranged at intervals from each other. One end of the two support portions 22 and 23 in the lateral direction substantially coincides with each other in the lateral direction. The other lateral ends of the two supports 22, 23 can also be substantially coincident in the lateral direction.
- the first support portion 22 comes into contact with the bottom surface 11e of the diffusion compartment 11.
- the second support portion 23 may be arranged along the top surface 11f of the diffusion section 11.
- one end of the first and second support portions 22 and 23 in the lateral direction comes into contact with the bottom surface 11e of the diffusion compartment 11.
- the first and second support portions 22, 23 may be arranged along the side surfaces 11g of the diffusion compartment 11, respectively.
- the acoustic diffuser 20 can be a columnar diffuser of Acoustic Grove (registered trademark) System (AGS).
- AVS Acoustic Grove
- the acoustic diffuser may also be configured to have a back surface portion located on the back surface side in the thickness direction with respect to the plurality of columnar portions.
- the sound absorbing cushion 30 when the sound absorbing cushion 30 is a sound absorbing cushion 30, the sound absorbing cushion 30 is a cover arranged on the outer surface of the sound absorbing cushion 30 so as to form an internal space thereof. It has a part 31.
- the internal space of the sound absorbing cushion 30 may be a closed space surrounded by the cover portion 31.
- the sound absorbing cushion 30 has a sound absorbing portion 32 arranged in the internal space thereof.
- the sound absorbing cushion is not limited to this.
- the sound absorbing cushion may be composed of only the sound absorbing portion without having the cover portion.
- the sound absorbing cushion 30 substantially the same directions as the depth direction, the height direction, and the width direction of the shelf member 10 are defined as the depth direction, the height direction, and the width direction, respectively.
- the bottom portion 30a of the sound absorbing cushion 30 in the height direction comes into contact with the bottom surface 12e of the sound absorbing compartment 12.
- the sound absorbing cushion 30 can be supported in a state of being sandwiched by the bottom surface 12e and the top surface 12f of the sound absorbing section 12 in the height direction, or sandwiched by both side surfaces 12g of the sound absorbing section 12 in the width direction.
- the top portion 30b of the sound absorbing cushion in the height direction may be arranged along the top surface of the sound absorbing compartment 12.
- the widthwise side portions 30c of the sound absorbing cushion may be arranged along the side surface 12g of the sound absorbing compartment 12, respectively.
- the cover portion 31 of the sound absorbing cushion 30 is preferably flexible.
- the cover portion 31 is preferably acoustically transparent.
- the cover portion 31 is preferably breathable.
- the cover portion 31 may be made of natural leather, synthetic leather, woven fabric, or non-woven fabric.
- the cover portion is not limited to this.
- the sound absorbing portion 32 of the sound absorbing cushion 30 is made of a material having sound absorbing performance.
- the material of the sound absorbing portion 32 can be glass wool.
- the material of the sound absorbing portion is not limited to this.
- the material of the sound absorbing part may be rock wool.
- the material of the sound absorbing portion may be a material made of resin fibers such as polyester fiber, PET (Polyethylene terephthalate) fiber, acrylic (Polymethylmethacrylate, PMMA) fiber, and polyimide (PI) fiber.
- the material of the sound absorbing portion may be a material containing glass wool, rock wool, the above resin fiber, or the like.
- the material of the sound absorbing portion may be a sponge material made of resin or the like.
- the sound absorbing cushion may have an additional member between the cover portion and the sound absorbing portion.
- additional members are formed so as to surround a part or the whole of the sound absorbing portion.
- the additional member can be a corrugated cardboard plate, a rubber plate, an aluminum foil, a film made of polyester, or the like.
- the specific configuration of the additional sound adjusting member 40 may be as follows.
- the additional sound adjusting member 40 is arranged so as to occupy a part of the storage space 11c in the depth direction in the section 11 in which the sound adjusting member 20 is installed.
- the additional sound absorbing cushion 40 has a cover portion 41 arranged on the outer surface of the additional sound absorbing cushion 40 so as to form an internal space thereof.
- the internal space of the additional sound absorbing cushion 40 may be a closed space surrounded by the cover portion 41.
- the additional sound absorbing cushion 40 has a sound absorbing portion 42 arranged in the internal space thereof.
- the additional sound absorbing cushion is not limited to this.
- the additional sound absorbing cushion may be composed of only the sound absorbing portion without having the cover portion.
- the additional sound absorbing cushion 40 substantially the same directions as the thickness direction, the vertical direction, and the horizontal direction of the sound diffuser 20 are defined as the thickness direction, the vertical direction, and the horizontal direction, respectively.
- the additional sound absorbing cushion 40 may come into contact with the acoustic diffuser 20 in the thickness direction. Further, the additional sound absorbing cushion 40 may be detachably attached to the sound diffuser 20.
- the additional sound absorbing cushion is not limited to this.
- the additional sound absorbing cushion can be joined to the acoustic diffuser.
- the additional sound absorbing cushion can also be supported by the peripheral surface of the sound absorbing section.
- the thickness direction, the vertical direction, and the horizontal direction of the additional sound absorbing cushion 40 correspond to the sound diffuser 20, respectively, in the depth direction, the height direction, and the height direction of the shelf member 10. It almost matches in the width direction.
- the thickness direction, the vertical direction, and the horizontal direction of the additional sound absorbing cushion 40 correspond to the sound diffuser 20, respectively, in the depth direction, the width direction, and the height of the shelf member 10. It almost matches the direction.
- cover portion 41 of the additional sound absorbing cushion 40 may have flexibility.
- the cover portion 41 is preferably acoustically transparent.
- the cover portion 41 is preferably breathable.
- the cover portion 41 may be formed of natural leather, synthetic leather, woven fabric, or non-woven fabric.
- the material of the cover portion 41 of the additional sound absorbing cushion 40 may be the same as or different from the material of the cover portion 31 of the sound absorbing cushion 30.
- the cover portion is not limited to this.
- the sound absorbing portion 42 of the additional sound absorbing cushion 40 is made of a material having sound absorbing performance.
- the material of the sound absorbing portion 42 of the additional sound absorbing cushion 40 may be the same as or different from the material of the sound absorbing portion 32 of the sound absorbing cushion 30.
- the material of the sound absorbing portion 42 can be glass wool.
- the material of the sound absorbing portion is not limited to this.
- the material of the sound absorbing part may be rock wool.
- the material of the sound absorbing portion may be a material made of resin fibers such as polyester fiber, PET fiber, acrylic fiber, and polyimide fiber.
- the material of the sound absorbing portion may be a material containing glass wool, rock wool, the above resin fiber, or the like.
- the material of the sound absorbing portion may be a material containing glass wool, rock wool, the above resin fiber, or the like.
- the material of the sound absorbing portion may be a sponge material made of resin or the like.
- the additional sound absorbing cushion may have an additional member between the cover portion and the sound absorbing portion.
- Such additional members are formed so as to surround a part or the whole of the sound absorbing portion.
- the additional member can be a corrugated cardboard plate, a rubber plate, an aluminum foil, a film made of polyester, or the like.
- the acoustic adjustment shelves can be installed in variations shown in the following embodiments. That is, as shown in FIG. 2, in the acoustic adjustment shelf according to the first aspect of the present embodiment, the shelf member 10 can have a plurality of diffusion sections 11 and a plurality of sound absorbing sections 12. In all of the plurality of diffusion compartments 11, the acoustic diffuser 20 can be placed vertically. One end of the bottom plates 13a to 15a and the top plates 13b to 15b of the plurality of units 13 to 15 in the width direction can be substantially aligned with each other in the width direction. The shelf member 10 can be installed in a basic posture so that its bottom portion 10a is in contact with the floor surface F of the acoustic adjustment chamber R.
- the shelf member 10 can have a plurality of diffusion sections 11 and a plurality of sound absorbing sections 12.
- the acoustic diffuser 20 can be placed vertically.
- One end of one end of the bottom plates 13a to 15a and the top plate 13b to 15b of the plurality of units 13 to 15 in the width direction is shifted in the width direction with respect to one end of the other part. be able to.
- the shelf member 10 can be installed in a basic posture so that its bottom portion 10a is in contact with the floor surface F of the acoustic adjustment chamber R.
- the shelf member 10 can have a plurality of diffusion sections 11 and a plurality of sound absorbing sections 12.
- the acoustic diffuser 20 can be placed vertically, and in the remaining diffusion compartments 11, the acoustic diffuser 20 is placed horizontally.
- One end of one end of the bottom plates 13a to 15a and the top plate 13b to 15b of the plurality of units 13 to 15 in the width direction is shifted in the width direction with respect to one end of the other part. be able to.
- the shelf member 10 can be installed in a basic posture so that its bottom portion 10a is in contact with the floor surface F of the acoustic adjustment chamber R.
- the shelf member 10 can have only a plurality of diffusion sections 11. In some of the diffusion compartments 11 of the plurality of diffusion compartments 11, the acoustic diffuser 20 can be placed vertically, and in the remaining diffusion compartments 11, the acoustic diffuser 20 is placed horizontally. Can be. One end of one end of the bottom plates 13a to 15a and the top plate 13b to 15b of the plurality of units 13 to 15 in the width direction is shifted in the width direction with respect to one end of the other part. be able to.
- the shelf member 10 can be installed in a basic posture so that its bottom portion 10a is in contact with the floor surface F of the acoustic adjustment chamber R.
- the shelf member 10 can have only a plurality of sound absorbing sections 12. One end of one end of the bottom plates 13a to 15a and the top plate 13b to 15b of the plurality of units 13 to 15 in the width direction is shifted in the width direction with respect to one end of the other part. be able to.
- the shelf member 10 can be installed in a basic posture so that its bottom portion 10a is in contact with the floor surface F of the acoustic adjustment chamber R.
- the shelf member 10 can have a plurality of diffusion sections 11 and a plurality of sound absorbing sections 12. In all of the plurality of diffusion compartments 11, the acoustic diffuser 20 can be placed vertically. One end of the bottom plates 13a to 15a and the top plates 13b to 15b of the plurality of units 13 to 15 in the width direction can be substantially aligned with each other in the width direction.
- the shelf member 10 can be installed in a sideways posture so that its side portion 10c is in contact with the floor surface F of the acoustic adjustment chamber R.
- each of the acoustic adjustment shelves according to the first to sixth aspects is shown only as an example.
- the acoustic adjustment shelf can be installed in any aspect including the configuration of the present embodiment described so far.
- the acoustic adjustment shelf is detachably installed and input to the shelf member 10 having the plurality of compartments 11 and 12 and at least one of the plurality of compartments 11 and 12.
- the sound adjusting members 20 and 30 are configured to change the characteristics of the sound. Therefore, the acoustic characteristics can be easily adjusted by changing the types of the acoustic adjusting members 20 and 30 installed in the compartments 11 and 12 of the shelf member 10. Further, since the inorganic acoustic adjusting members 20 and 30 are housed in the shelf member 10, the acoustic adjusting shelf has an excellent aesthetic feeling. As a result, the aesthetics of the acoustic adjustment room R in which the acoustic adjustment shelf is installed, that is, the acoustic adjustment space can be improved.
- the acoustic adjustment member 20 can be an acoustic diffuser 20 having a plurality of columnar portions 21 configured to be able to reflect input sounds.
- the acoustic diffuser 20 has a great influence on the acoustic characteristics, particularly the acoustic diffusion characteristics and the acoustic reflection characteristics. Therefore, the acoustic characteristics can be easily adjusted by changing the type of the acoustic diffuser 20 installed in the diffusion compartment 11 of the shelf member 10.
- the aesthetic appearance of the acoustic diffuser 20 is inorganic, since the acoustic diffuser 20 is housed in the shelf member 10, the aesthetic appearance of the acoustic adjustment shelf is not deteriorated. As a result, the aesthetics of the acoustic adjustment room R in which the acoustic adjustment shelf is installed, that is, the acoustic adjustment space can be improved.
- the acoustic adjustment shelf according to the present embodiment is configured to be detachably installed on the back side of the shelf member 10 with respect to the acoustic adjustment member 20 in the diffusion section 11 and to change the characteristics of the input sound.
- the additional sound absorbing member 40 is provided, and the additional sound absorbing member 40 can be an additional sound absorbing cushion 40 configured to be able to absorb sound.
- the combination of the acoustic diffuser 20 and the additional acoustic adjusting member 40 has a great influence on the acoustic characteristics, particularly the acoustic reflection characteristics and the sound absorption characteristics.
- the acoustic characteristics can be easily adjusted by changing at least one of the type of the acoustic diffuser 20 and the type of the additional acoustic adjusting member 40 installed in the diffusion section 11 of the shelf member 10.
- the aesthetics of the acoustic adjustment room R in which the acoustic adjustment shelf is installed that is, the acoustic adjustment space can be improved.
- the sound adjusting member 30 can be a sound absorbing cushion 30 configured to be able to absorb sound.
- the sound absorbing cushion 30 has a great influence on the acoustic characteristics, particularly the sound absorbing characteristics. Therefore, the acoustic characteristics can be easily adjusted by changing the type of the sound absorbing cushion 30 installed in the sound absorbing section 12 of the shelf member 10. Further, since the sound absorbing cushion 30 is housed in the shelf member 10, the aesthetics of the sound adjusting shelf can be improved. As a result, the aesthetics of the acoustic adjustment room R in which the acoustic adjustment shelf is installed, that is, the acoustic adjustment space can be improved.
- the relationship between the acoustic frequency and the sound absorption coefficient in the acoustic adjustment shelf according to Examples 1 to 5 is measured based on JIS A 1409 "Measurement method of the reverberation room method sound absorption coefficient", and the relationship between these acoustic frequencies and the sound absorption coefficient is measured. Contrast. Then, in each measurement, the acoustic adjustment shelf was installed so that the back surface of the shelf member was brought into contact with the wall surface of the reverberation room.
- the acoustic adjustment shelf according to the first embodiment was the same as the acoustic adjustment shelf according to the first aspect of the present embodiment. Further, in the acoustic adjustment shelf according to the first embodiment, the shelf member has eight sections, four of the eight sections of the shelf member are diffusion sections, and the remaining four are sound absorbing sections. In the first unit located near the bottom of the shelf member, a sound absorbing section, a diffusion section, and a sound absorbing section are provided in order from the left when viewed from the front, and the second unit adjacent to the first unit near the top of the shelf member.
- the sound absorbing section and the diffusion section are provided in order from the left in the front view, and in the third unit adjacent to the top of the shelf member with respect to the second unit, the diffusion section and the sound absorbing section are provided in order from the left in the front view.
- a section and a diffusion section were provided. In each diffusion section, an acoustic diffuser in a vertical position and an additional sound absorbing cushion were installed, and in each sound absorbing section, a sound absorbing cushion was installed.
- the acoustic adjustment shelf according to the second embodiment was the same as the acoustic adjustment shelf according to the fourth aspect of the present embodiment except that all the acoustic diffusers were placed vertically. Further, in the acoustic adjustment shelf according to the second embodiment, the shelf member has eight compartments, and all eight compartments of the shelf member are diffusion compartments, and in each diffusion compartment, the acoustic diffusion in the vertical state is performed. The body and additional sound absorbing cushions were installed.
- the acoustic adjustment shelf according to the third embodiment was the same as the acoustic adjustment shelf according to the fifth aspect of the present embodiment. Further, in the acoustic adjustment shelf according to the third embodiment, the shelf member has eight sections, all eight sections of the shelf member are sound absorbing sections, and sound absorbing cushions are installed in each sound absorbing section. ..
- Example 4 The acoustic adjustment shelf according to the fourth embodiment was the same as the acoustic adjustment shelf according to the first embodiment except that only the acoustic diffuser was installed in each diffusion section.
- Example 5 The acoustic adjustment shelf according to the fifth embodiment was the same as the acoustic adjustment shelf according to the second embodiment except that only the acoustic diffuser was installed in each diffusion section.
- the vertical axis Y indicates the sound absorption coefficient
- the vertical axis X indicates the frequency (Hz)
- the solid line L1 indicates the result of Example 1
- the broken line L2 indicates the result of Example 2
- the alternate long and short dash line L4 shows the result of Example 4
- the dotted line L5 shows the result of Example 5.
- the sound absorption coefficient is 0 (zero) at each frequency.
Abstract
Description
図1~図9を参照すると、本実施形態に係る音響調整棚の基本的な構成は次のようになっている。図1~図9に示すように、音響調整棚は、複数の区画11,12を有する棚部材10を備える。
図1~図9を参照すると、棚部材10の具体的な構成は次のようになっているとよい。図3及び図4に示すように、棚部材10の各区画11,12は、奥行方向に延びるように形成されている。各区画11,12は、棚部材10の正面に位置する正面開口11a,12aと、この正面開口11a,12aに対して奥行方向に対向するように棚部材10の背面に位置する背面開口11b,12bとを有する。各区画11,12の正面開口11a,12aは、音響調整棚又は棚部材10の外部の空間、特に、音響調整される音響調整棚又は棚部材10の外部の空間に向かって開放される。しかしながら、複数の区画のうち少なくとも1つの区画が、棚部材の背面で閉鎖されていてもよい。この場合、例えば、棚部材の背面側に背板を配置することができる。
図1~図9を参照すると、音響調整部材20,30の具体的な構成は次のようになっているとよい。図1~図9に示すように、音響調整部材20,30は、この音響調整部材20,30を設置した区画11,12における収納空間11c,12cの奥行方向の一部又は全部を占有するように配置される。
図3及び図4を参照すると、追加音響調整部材40の具体的な構成は次のようになっているとよい。追加音響調整部材40は、音響調整部材20を設置した区画11における収納空間11cの奥行方向の一部を占有するように配置される。追加音響調整部材40が追加吸音クッション40である場合において、追加吸音クッション40は、その内部空間を形成するように追加吸音クッション40の外表面に配置されるカバー部41を有する。なお、追加吸音クッション40の内部空間は、カバー部41によって囲まれた閉空間となっているとよい。
図2及び図5~図9を参照すると、音響調整棚は、次のような態様にて示すバリエーションにて設置することができる。すなわち、図2に示すように、本実施形態の第1態様に係る音響調整棚においては、棚部材10は、複数の拡散区画11及び複数の吸音区画12を有することができる。複数の拡散区画11のすべてにおいては、音響拡散体20を縦置き状態とすることができる。複数のユニット13~15における底板13a~15a及び天板13b~15bの幅方向の一方端を幅方向にて互いに略一致させることができる。棚部材10を、その底部10aを音響調整室Rの床面Fに当接させるように基本姿勢に設置することができる。
実施例1に係る音響調整棚は、本実施形態の第1態様に係る音響調整棚と同様とした。さらに、実施例1に係る音響調整棚においては、棚部材が8つの区画を有し、棚部材の8つの区画のうち4つが拡散区画となっており、残り4つが吸音区画となっており、棚部材の底部寄りに位置する第1ユニットにおいては、正面視にて左から順に吸音区画、拡散区画、吸音区画が設けられ、第1ユニットに対して棚部材の頂部寄りに隣接する第2ユニットにおいては、正面視にて左から順に吸音区画、拡散区画が設けられ、第2ユニットに対して棚部材の頂部寄りに隣接する第3ユニットにおいては、正面視にて左から順に拡散区画、吸音区画、拡散区画が設けられた。各拡散区画においては、縦置き状態の音響拡散体と、追加吸音クッションとが設置され、各吸音区画においては、吸音クッションが設置された。
実施例2に係る音響調整棚は、本実施形態の第4態様に係る音響調整棚と、すべての音響拡散体を縦置き状態とした点を除いて同様とした。さらに、実施例2に係る音響調整棚においては、棚部材が8つの区画を有し、棚部材の8つの区画すべてが拡散区画となっており、各拡散区画においては、縦置き状態の音響拡散体と追加吸音クッションとが設置された。
実施例3に係る音響調整棚は、本実施形態の第5態様に係る音響調整棚と同様とした。さらに、実施例3に係る音響調整棚においては、棚部材が8つの区画を有し、棚部材の8つの区画すべてが吸音区画となっており、各吸音区画においては、吸音クッションが設置された。
実施例4に係る音響調整棚は、実施例1に係る音響調整棚と、各拡散区画において音響拡散体のみを設置した点を除いて同様とした。
実施例5に係る音響調整棚は、実施例2に係る音響調整棚と、各拡散区画において音響拡散体のみを設置した点を除いて同様とした。
20…音響拡散体(音響調整部材)、21…柱状部
30…吸音クッション(音響調整部材)
40…追加吸音クッション(吸音クッション、追加音響調整部材)
Claims (4)
- 複数の区画を有する棚部材と、
前記複数の区画のうち少なくとも1つの区画に離脱可能に設置され、かつ入力される音の特性を変更するように構成される音響調整部材と
を備える音響調整棚。 - 前記音響調整部材が、入力される音をそれぞれ反射可能に構成される複数の柱状部を有する音響拡散体となっている、請求項1に記載の音響調整棚。
- 前記少なくとも1つの区画にて、前記音響調整部材に対して前記棚部材の背面側にて離脱可能に設置され、かつ入力される音の特性を変更するように構成される追加音響調整部材を備え、
前記追加音響調整部材が、吸音可能に構成される吸音クッションとなっている、請求項2に記載の音響調整棚。 - 前記音響調整部材が、吸音可能に構成される吸音クッションとなっている、請求項1に記載の音響調整棚。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19919082.8A EP3940691A4 (en) | 2019-03-14 | 2019-03-14 | ACOUSTIC ADJUSTMENT TABLE |
KR1020217017537A KR20210090224A (ko) | 2019-03-14 | 2019-03-14 | 음향 조정 선반 |
JP2019531482A JP6814884B1 (ja) | 2019-03-14 | 2019-03-14 | 音響調整棚 |
US17/421,970 US20220034085A1 (en) | 2019-03-14 | 2019-03-14 | Acoustic adjustment shelf |
PCT/JP2019/010485 WO2020183689A1 (ja) | 2019-03-14 | 2019-03-14 | 音響調整棚 |
CN201980081060.1A CN113168825A (zh) | 2019-03-14 | 2019-03-14 | 音响调整架 |
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PCT/JP2019/010485 WO2020183689A1 (ja) | 2019-03-14 | 2019-03-14 | 音響調整棚 |
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WO2020183689A1 true WO2020183689A1 (ja) | 2020-09-17 |
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US (1) | US20220034085A1 (ja) |
EP (1) | EP3940691A4 (ja) |
JP (1) | JP6814884B1 (ja) |
KR (1) | KR20210090224A (ja) |
CN (1) | CN113168825A (ja) |
WO (1) | WO2020183689A1 (ja) |
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US11568845B1 (en) * | 2018-08-20 | 2023-01-31 | Board of Regents for the Oklahoma Agricultural & Mechanical Colleges | Method of designing an acoustic liner |
USD1009143S1 (en) * | 2019-03-14 | 2023-12-26 | Nihon Onkyo Engineering Co., Ltd. | Acoustic adjustment shelf |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05197383A (ja) * | 1992-01-22 | 1993-08-06 | Matsushita Electric Ind Co Ltd | 吸音体 |
WO2009142267A1 (ja) | 2008-05-21 | 2009-11-26 | 日東紡音響エンジニアリング株式会社 | 反射体構造物、音場調整方法、柱状反射体構造物、部屋、プログラム、音響諸室設計システム |
JP2011140779A (ja) * | 2010-01-06 | 2011-07-21 | Sumitomo Forestry Co Ltd | 音響を考慮した居室構造 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4821839A (en) * | 1987-04-10 | 1989-04-18 | Rpg Diffusor Systems, Inc. | Sound absorbing diffusor |
US5168129A (en) * | 1991-02-19 | 1992-12-01 | Rpg Diffusor Systems, Inc. | Variable acoustics modular performance shell |
US6371240B1 (en) * | 2000-03-18 | 2002-04-16 | Austin Acoustic Systems, Inc. | Anechoic chamber |
JP3475917B2 (ja) * | 2000-07-13 | 2003-12-10 | ヤマハ株式会社 | 音響放射構造体および音響室 |
US6431312B1 (en) * | 2000-08-15 | 2002-08-13 | Rpg Diffusor Systems, Inc. | Motorized and computer operated variable acoustics treatment |
US7428948B2 (en) * | 2005-08-11 | 2008-09-30 | Rpg Diffusor Systems, Inc. | Hybrid amplitude-phase grating diffusers |
EP1768100A1 (de) * | 2005-09-22 | 2007-03-28 | USM Holding AG | Einrichtungssystem zur Beeinflussung der Raumakustik |
US8573356B1 (en) * | 2013-03-07 | 2013-11-05 | Joab Jay Perdue | Adjustable device for acoustic modification |
DE102014202477A1 (de) * | 2014-02-11 | 2015-08-13 | Leena Rose Wilson | Akustischer Absorber und Verwendung eines derartigen akustischen Absorbers |
DE202014101267U1 (de) * | 2014-03-19 | 2015-07-01 | Rehau Ag + Co | Vorrichtung zur Beeinflussung von Schall bzw. Schallenergie |
DE202015100228U1 (de) * | 2015-01-20 | 2015-03-10 | Viasit Bürositzmöbel Gmbh | Einrichtung zur Schallabsorption |
KR101721437B1 (ko) * | 2016-05-11 | 2017-03-30 | 주식회사 울타리 | 조립식 책꽂이 및 그 시공 방법 |
US10961700B2 (en) * | 2017-02-27 | 2021-03-30 | Knoll, Inc. | Noise reduction apparatus and method of making and using the same |
-
2019
- 2019-03-14 JP JP2019531482A patent/JP6814884B1/ja active Active
- 2019-03-14 CN CN201980081060.1A patent/CN113168825A/zh active Pending
- 2019-03-14 EP EP19919082.8A patent/EP3940691A4/en not_active Withdrawn
- 2019-03-14 US US17/421,970 patent/US20220034085A1/en not_active Abandoned
- 2019-03-14 WO PCT/JP2019/010485 patent/WO2020183689A1/ja active Application Filing
- 2019-03-14 KR KR1020217017537A patent/KR20210090224A/ko not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05197383A (ja) * | 1992-01-22 | 1993-08-06 | Matsushita Electric Ind Co Ltd | 吸音体 |
WO2009142267A1 (ja) | 2008-05-21 | 2009-11-26 | 日東紡音響エンジニアリング株式会社 | 反射体構造物、音場調整方法、柱状反射体構造物、部屋、プログラム、音響諸室設計システム |
JP2011140779A (ja) * | 2010-01-06 | 2011-07-21 | Sumitomo Forestry Co Ltd | 音響を考慮した居室構造 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3940691A4 |
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JP6814884B1 (ja) | 2021-01-20 |
EP3940691A4 (en) | 2022-03-09 |
EP3940691A1 (en) | 2022-01-19 |
JPWO2020183689A1 (ja) | 2021-03-18 |
US20220034085A1 (en) | 2022-02-03 |
KR20210090224A (ko) | 2021-07-19 |
CN113168825A (zh) | 2021-07-23 |
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