KR102109790B1 - Apparatus, method and system for variable reverberation - Google Patents

Abstract

The present invention relates to a reverberation variable device, method, and system, which is installed in a predetermined indoor space, and adjusts sound absorption, reflection, or diffusion through expansion or compression to vary the reverberation time of sound generated within the predetermined space. It is connected to at least one reverberation variable unit and one side of the reverberation variable unit, and the reverberation forming unit includes expansion means for expanding or compressing a predetermined volume, and the variable membrane provided in the reverberation variable unit is powered from the expansion means. It is characterized by expanding when supplied.

Description

{Apparatus, method and system for variable reverberation}

The present invention relates to a reverberation variable device, method, and system, and more particularly, to a reverberation variable device, method, and system that enables variable reverberation time in an indoor space by expanding or compressing the reverberation variable portion located in the indoor space. .

One of the acoustic variables affecting the sound quality of the indoor space of a performance facility such as a concert hall or multi-purpose performance hall is reverberation time, which is a physical indicator of reverberance, a subjective component of indoor sound. An adequate reverberation feeling, that is, reverberation time, is required for an indoor space that is satisfactory to users. The reverberation time is defined as the time required for the amount of sound energy to decay by 60 Hz when the sound generated from the sound source is stopped. In general, a long reverberation time decreases intelligibility in the case of a conversation sound, and a reverberation time longer than a conversation sound in the case of music.

Reverberation time is most closely related to reverberation. The appropriate range of reverberation time varies depending on the size of the indoor space, the number of seats, the genre of the performance, and the composition of the performance range.For example, in a space where classical music is played, the recommended reverberation time is in the range of 1.5 seconds to 2.3 seconds, and voice information The reverberation time of the space where the transmission of is important ranges from 0.6 seconds to 1.0 seconds.

Variable reverberation refers to varying reverberation time according to the purpose of use. Performing reverberation for multiple purposes in a multi-purpose venue can further improve the quality of the performance, and in the lecture more clearly speaking The voice can be delivered to the audience, so it is essential for improving sound quality.

However, in the related art, a plurality of panels installed in an indoor space was manually adjusted for variable reverberation according to the purpose of use, and since the automatic control of the panel takes an expensive cost, versatility was low.

Therefore, there is a need for an apparatus, method, and system for controlling reverberation by controlling a plurality of panels installed in an indoor space while being inexpensive.

Japanese registered patent JP4782193

The present invention is to solve the problems of the prior art as described above, and has an object to control a plurality of panels, a reverberation variable unit or a reverberation variable module so that the reverberation time can be varied to meet the purpose of use.

The reverberation variable device according to the present invention for achieving the above object is installed in a predetermined indoor space, and adjusts sound absorption, reflection or diffusion through expansion or compression to vary the reverberation time of the sound generated inside the predetermined space. At least one reverberation variable unit; And an expansion means connected to one side of the reverberation variable portion to expand or compress the reverberation forming portion to a predetermined volume, wherein the variable membrane provided on the reverberation variable portion expands when power is supplied from the expansion means. It is characterized by.

Here, the reverberation variable portion, having a predetermined size, the support frame for forming a volume or volume with the variable membrane by surrounding the variable membrane; And a sound absorbing material provided inside the volume or volume.

In addition, the variable membrane provided in the reverberation variable portion is characterized in that it is provided with an electroactive polymer (Electroactive polymers) or a ferroelectric material (Ferro-Electric Material).

On the other hand, the reverberation variable device according to the present invention for achieving the above object is installed in a predetermined indoor space, and reverberation time of sound generated inside the predetermined space by adjusting sound absorption, reflection or diffusion through expansion or compression At least one reverberation variable unit for varying the; And an expansion means connected to one side of the reverberation variable portion to expand or compress the reverberation forming portion to a predetermined volume, wherein the reverberation variable portion is subject to acoustic signal or sound energy entering the reverberation variable portion when expanded. It is characterized by forming a diffractive structure.

In addition, the diffractive structure is characterized by being provided with at least one of a lattice structure inside the variable membrane or an inner protrusion of the variable membrane while the variable membrane expands.

In addition, at least one reverberation variable unit is installed in a predetermined indoor space and adjusts sound absorption, reflection, or diffusion through expansion or compression to vary the reverberation time of the sound generated within the predetermined space; And an expansion means connected to one side of the reverberation variable portion to expand or compress the reverberation portion to a predetermined volume, wherein the reverberation variable portion has a plurality of curved portions along a length extending parallel to both sides. It is characterized by being.

In addition, the curved portion is characterized in that it is formed in a corrugated shape or a corrugated pipe shape.

In addition, the curved portion is characterized in that it is formed in an accordion shape.

The reverberation variable device according to the present invention for achieving the above object is respectively installed on one side of a plurality of seats located in a predetermined indoor space, and reverberation time of sound generated in the predetermined indoor space by adjusting sound absorption, reflection or diffusion At least one reverberation variable unit for varying the; And a control unit for controlling sound absorption, reflection, or diffusion by controlling the variable reverberation units, respectively.

Here, the reverberation variable portion is characterized in that it is respectively installed on the back of the plurality of seats.

On the other hand, the reverberation variable method according to the present invention for achieving the above object comprises setting parameters related to the reverberation variable module for a plurality of modes according to a user input; Selecting one of the plurality of modes; And operating a reverberation variable module based on a parameter corresponding to the selected mode, wherein the parameter may include parameters related to expansion or compression of the volume of the reverberation variable module.

In addition, the control unit is provided with at least one deep learning engine, the deep learning engine to learn an algorithm for deriving the parameters based on a plurality of learning data set consisting of input and output variables corresponding to a plurality of modes It is characterized by.

In addition, the plurality of learning data sets are structure-related learning data that are at least one of a volume, width, width, or height of a hole as an input variable, and an acoustic signal that is at least one of amplitude, period, and frequency of a sound wave or sound signal. It is characterized by related learning data.

In addition, the plurality of learning data sets are characterized in that the output variable is the volume of the reverberation variable portion, the slope of the reverberation variable portion, or the distance between the reverberation variable portions provided in plural.

In addition, the deep learning engine learns the learning data set differently depending on the location and mode in which the reverberation variable is installed, and the controller differs from the plurality of reverberation variable parts according to the different learning data sets in one mode. Characterized in that the control.

In addition, the deep learning engine is characterized by learning the genre or pattern of the sound wave or sound signal received in the predetermined space, and determining the mode based on the learned genre or pattern.

In addition, in a state in which control of the reverberation variable unit is performed in response to one mode, the control unit determines a reverberation time based on the received acoustic signal and determines whether the reverberation time is included within a range allowed by the mode. Therefore, the reverberation variable is controlled to increase or decrease the reverberation time.

On the other hand, the reverberation variable system according to the present invention for achieving the above object is installed in a predetermined indoor space, and reverberation time of sound generated inside the predetermined space by adjusting sound absorption, reflection or diffusion through expansion and compression At least one reverberation variable module for varying the; A control device for controlling expansion and compression of the reverberation variable module; And a user terminal that derives a parameter corresponding to a mode according to a user's input variable and provides a control signal to the control device such that the control device expands or compresses the reverberation variable module to a predetermined volume. It is characterized by.

On the other hand, the reverberation variable system according to the present invention for achieving the above object is installed in a predetermined indoor space, and reverberation time of sound generated inside the predetermined space by adjusting sound absorption, reflection or diffusion through expansion and compression A reverberation variable module having at least one reverberation variable for varying the; And a control device that derives a parameter corresponding to a mode according to a user's input variable and controls the reverberation variable to be expanded or compressed to a predetermined volume.

The reverberation variable apparatus, method and system according to the present invention have the following effects.

First, the reverberation time can be adjusted to suit the purpose of use. The reverberation variable apparatus, method, and system according to the present invention have a plurality of reverberation variable units installed in a wall, an audience chair, and a ceiling in one indoor space, and the installed plurality of reverberation variable units are different depending on the reverberation mode set by the user. The reverberation time of the indoor space is adjusted while absorbing, reflecting or diffusing the sound of the indoor space as it expands and compresses. Accordingly, the user may adjust the reverberation time in one indoor space to adjust the reverberation time for various purposes.

Second, it is easy to control the reverberation mode. The reverberation variable apparatus, method and system according to the present invention may control a plurality of reverberation variable units using a deep learning engine. That is, when the deep learning engine learns an algorithm for deriving the optimal parameter based on the input learning data set, when the user sets the reverberation mode according to a specific use purpose, the reverberation variable unit is controlled according to the optimal parameter. Accordingly, the user can easily control the reverberation time by easily controlling the reverberation variable for the reverberation mode.

1 is a view schematically showing a reverberation variable device according to a first embodiment of the present invention.
2 is a perspective view of a reverberation variable unit according to a first embodiment of the present invention.
3 is a cross-sectional view of the reverberation variable portion according to the first embodiment of the present invention.
4 is a diagram schematically showing that sound absorption is performed by absorbing sound energy in the reverberation variable device according to the first embodiment of the present invention.
5 is a view schematically showing reflection of sound energy in the reverberation variable device according to the first embodiment of the present invention.
6 is a cross-sectional view of a reverberation variable unit according to a second embodiment of the present invention.
7 is a view schematically showing that sound absorption is performed by absorbing sound energy in the reverberation variable device according to the second embodiment of the present invention.
8 is a view schematically showing that the reverberation variable device according to the second embodiment of the present invention reflects sound energy to increase ringing.
9 is a perspective view of one reverberation variable unit according to a third embodiment of the present invention.
10 is a plan view of a reverberation variable unit according to a third embodiment of the present invention.
11 is a view schematically showing reflection and diffusion of sound energy in a reverberation variable device according to a third embodiment of the present invention.
12 is a perspective view of one reverberation variable unit according to a fourth embodiment of the present invention.
13 is a cross-sectional view of a reverberation variable unit according to a fourth embodiment of the present invention.
14 is a flowchart illustrating a method for varying reverberation according to an embodiment of the present invention.
15 is a diagram schematically showing deriving an optimal parameter for each mode using deep learning in the reverberation variable method according to the present invention.
16 is a diagram schematically showing that optimal parameters for input variables are differently derived in a specific mode using deep learning in the reverberation variable method according to the present invention.
17 is a diagram schematically showing that a controller determines a mode by using deep learning.
18 is a schematic diagram illustrating finely controlling the reverberation variable unit by determining whether the reverberation time is within an allowable range in one mode.
19 is a view showing a reverberation variable system in the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, some components irrelevant to the subject matter of the invention will be omitted or compressed, but the omitted components are not necessarily necessary in the present invention, and may be used in combination by those skilled in the art to which the present invention pertains. Can be.

<First Example>

1 is a view schematically showing a reverberation variable device according to a first embodiment of the present invention, FIG. 2 is a perspective view of one reverberation variable part according to a first embodiment of the present invention, and FIG. 3 is a first view of the present invention It is a sectional view of a reverberation variable part according to an embodiment.

1 to 3, the reverberation variable device according to the first embodiment of the present invention may include a reverberation variable unit 100 and an expansion means 200.

The reverberation variable portion 100 is expanded or compressed by the expansion means 200 to form a cavity 140 therein, thereby performing sound absorption, reflection, or diffusion of sound generated in the indoor space. to be.

The expansion means 200 is configured to expand or compress the reverberation variable portion 100. The expansion means 200 may be provided with an air blower 210, a power supply (not shown). Therefore, if the expansion means 200 is the air blower 210, the reverberation variable portion 100 is expanded or compressed by injecting or inhaling air into the air blower 210 inside the reverberation variable portion 100, and the expansion means ( If 200) is a power supply unit, the reverberation variable unit 100 may be expanded or compressed by flowing or blocking current to the reverberation variable unit 100. In addition, the expansion means 200 is also possible to expand by applying an external force that the user directly pulls on both sides.

Here, the reverberation variable unit 100 may include a support frame 110, a variable curtain 120 and a sound absorbing material 130.

The support frame 110 is configured to form a skeleton of the reverberation variable portion 100, and is formed in a substantially rectangular frame to support the variable curtain 120. The support frame 110 has a large rigidity and lightness, and may be formed of a material having insulation. For example, it may be provided with stainless steel, plywood, molded plastic material, and the like.

The variable curtain 120 is configured to generate sound absorption, reflection, and diffusion through expansion and compression, and is provided around the support frame 110 in a form surrounding the support frame 110. The variable membrane 120 may be provided with electroactive polymers or ferro-electric material, and expanded or compressed based on the support frame 110 by the expansion means 200. That is, when the expansion means 200 flows a current, the variable membrane 120 formed of electroactive polymers or ferro-electric material swells from the support frame 110 and expands. When the means 200 interrupts the current, the variable curtain 120 is compressed. Electroactive polymers or ferro-electric materials have domains with polarization of different directions and sizes, where regions are created to align with the electric field when an electric field is formed. It will move. Therefore, the shape of a material formed of electroactive polymers or a ferro-electric material changes. Here, polarization means that a region having a (+) pole and a region having a (-) pole are distinguished and exhibit an electric field due to characteristics of a bonding structure between atoms in a compound. At the time of sound absorption, sound energy or sound signals are incident into the variable membrane 120, and the incident sound energy may be absorbed as heat is generated by internal friction.

In addition, the variable membrane 120 may be provided with a material that is expandable by air, rather than electroactive polymers or ferro-electric materials. As this material, for example, a thin and expandable plastic membrane can be used. That is, the variable membrane 120 is provided with a thin and expandable plastic membrane, and when the expansion means 200 injects air into the cavity 140 formed of the variable membrane 120 and the support frame 110, the variable membrane 120 The expansion, and when the expansion means 200 sucks air from the cavity 140, the variable membrane 120 is compressed. At this time, a valve 220 may be provided at a portion where the air blower 210 and the reverberation variable unit 100 are connected to inject air. The valve 220 may be manually controlled, or both electrically and automatically controlled.

The sound absorbing material 130 is provided inside the support frame 110 to increase the efficiency of sound absorption during sound absorption. The sound absorbing material 130 may be attached to a part of the support frame 110 or may be attached to the outer circumferential surface along the skeleton of the support frame 110. As the material of the sound absorbing material 130, porous polyester, polyurethane, glass wool, mineral wool, melamine foam and the like can be used as long as it can be used commonly.

Hereinafter, the sound generated in the indoor space is absorbed, reflected, or diffused by the reverberation variable device according to the first embodiment of the present invention will be described with reference to FIG. 4.

4 is a diagram schematically showing that sound absorption is performed by absorbing sound energy in the reverberation variable device according to the first embodiment of the present invention.

As illustrated in FIG. 4, the reverberation variable unit 100 may adjust the reverberation time by absorbing (absorbing) sound energy generated in the indoor space in a state where the variable curtain 120 is expanded. The variable membrane 120 may be expanded by the air blower 210 injecting air into the variable membrane 120. At this time, a valve 220 is provided between the air blower 210 and the reverberation variable portion 100 to control the amount of air injected from the air blower 210. The method in which the amount of air is adjusted may be finely adjusted by the user manually operating the air blower 210, but may be controlled to be remotely controlled by a control unit (not shown) by an electronic control method to be injected in a required amount. In addition, the variable membrane 120 may be made of electroactive polymers (Electroactive polymers) or ferro-electric material (Ferro-Electric Material) may be expanded when the current flows to the variable membrane 120 by the power supply unit.

After the variable curtain 120 is expanded as described above, sound energy generated inside the indoor space enters the variable curtain 120. That is, sound energy incident into the cavity 140 formed of the variable curtain 120 and the support frame 110 is generated by the friction generated inside the variable curtain 120, so that an acoustic attenuation effect is generated. In addition, the sound absorbing material 130 provided on one side of the support frame 110 absorbs sound energy when the sound energy enters the variable curtain 120 to generate heat by additionally generating friction with the material inside the sound absorbing material 130 In accordance with this, the sound absorbing effect can be increased with the variable membrane 120 expanding.

On the contrary, as shown in FIG. 5, the reverberation variable unit 100 may be compressed to absorb or reflect less sound.

5 is a view schematically showing reflection of sound energy in the reverberation variable device according to the first embodiment of the present invention.

As shown in FIG. 5, when the variable curtain 120 is compressed, the amount of sound energy incident into the variable curtain 120 is reduced, and accordingly, the amount of negative energy frictiond inside the variable curtain 120 is also reduced. Less, the sound absorption effect is reduced. Therefore, when the variable curtain 120 is compressed, the sound is absorbed less, so the reverberation time in the indoor space is increased.

Meanwhile, a plurality of reverberation variable units 100 may be connected to form a matrix.

Specifically, the support frame 110 is divided into a part forming an outer frame in a substantially rectangular shape and a part forming an inner frame in a cross shape to form a cell, and the variable membrane 120 is respectively provided in the formed cell. It is installed to form the reverberation variable portion 100. The air blower 210 or the power supply unit may be connected to each of the reverberation variable units 100, but may also be connected to each other by branching from one supply pipe.

As a result, the reverberation variable unit 100 forms a matrix of the reverberation variable unit 100 by using four as one set, and the reverberation variable unit 100 in the form of a matrix is a variable curtain 120 included in the matrix ) Can be individually controlled to be expanded or compressed to perform sound absorption.

In addition, the matrices of the reverberation variable unit 100 may be composed of one set of six or eight, rather than four, so that sound absorption can be performed by differently adjusting the degree of expansion.

<Second Example>

Hereinafter, a reverberation variable device configured based on a reverberation variable unit according to a second embodiment of the present invention will be described with reference to FIG. 6.

6 is a cross-sectional view of the reverberation variable unit 100 according to the second embodiment of the present invention.

6 (a), the reverberation variable portion 100 according to the second embodiment of the present invention forms the support frame 110, the variable curtain 120, and the inner protrusion 150. Here, since the supporting frame 110 and the variable curtain 120 have the same role as the first embodiment, a detailed description thereof will be omitted.

The inner protrusion 150 is provided inside the variable membrane 120 and extends vertically from the inner surface of the variable membrane 120 toward the cross-section center of the variable membrane 120 when the variable membrane 120 expands. The inner protrusion 150 may absorb, reflect, and diffuse the negative energy when the negative energy is incident into the variable membrane 120. That is, if the inner projection 150 is the same material as the variable membrane 120, the sound absorption performance is enhanced, and if the inner projection 150 is a different material from the variable membrane 120, the reflection and diffusion performance is enhanced. In addition, the inner protrusion 150 may enhance sound absorption performance by delaying and diffracting the movement of sound energy by colliding the sound energy incident into the inside of the variable curtain 120.

In addition, as shown in FIG. 6 (b), the variable curtain 120 has a structure for diffraction, and a lattice structure 160 may be formed in place of the inner protrusion 150. The lattice structure 160 may be formed by being connected to one side from the circumference of the inner cross-sectional area of the variable veil 120 when viewed on the inner cross-sectional area of the variable veil 120.

It will be described with reference to Figure 7 that the sound energy is absorbed or sucked in the reverberation variable device according to the second embodiment of the present invention.

7 is a view schematically showing that sound absorption is performed by absorbing sound energy in the reverberation variable device according to the second embodiment of the present invention.

As shown in FIG. 7, in the reverberation variable portion 100, the support frame 110 is formed to extend substantially in a rectangular shape, and a variable curtain 120 is installed along the edge of the support frame 110. Accordingly, the reverberation variable portion 100 shown in FIGS. 6A and 6B expands in a horizontally extending cylindrical shape when air is injected into the air blower 210.

In addition, the plurality of inner protrusions 150 formed inside the variable curtain 120 may be spaced apart and vertically extended to each inner protrusion 150 depending on the degree of expansion of the variable curtain 120, and the grid structure (160) In addition, depending on the degree of expansion of the variable membrane 120, the complete lattice structure 160 may be gradually formed. Therefore, when the negative energy is incident into the interior of the variable curtain 120, the inner protrusion 150 or the grid structure 160 is formed in the same material as the variable curtain 120, the inner projection 150 or the grid structure 160 By absorbing and diffracting by, sound absorption performance can be enhanced. When the sound energy is absorbed, the reverberation time decreases due to a decrease in the echo of the indoor space.

In addition, it will be described through FIG. 8 that the sound energy is reflected in the reverberation variable device according to the second embodiment of the present invention.

8 is a view schematically showing that the reverberation variable device according to the second embodiment of the present invention reflects sound energy to increase ringing.

 As described above, in the reverberation variable portion 100, the support frame 110 is formed to extend substantially in a rectangular shape, and the variable curtain 120 is installed along the rim of the support frame 110. Accordingly, the reverberation variable portion 100 shown in FIGS. 6A and 6B expands in a horizontally extending cylindrical shape when air is injected into the air blower 210.

In addition, the plurality of inner protrusions 150 formed inside the variable curtain 120 may be spaced apart and vertically extended to each inner protrusion 150 depending on the degree of expansion of the variable curtain 120, and the grid structure (160) In addition, depending on the degree of expansion of the variable membrane 120, the complete lattice structure 160 may be gradually formed. Accordingly, when the material in which the inner projection 150 or the lattice structure 160 is formed is different from the variable membrane 120 when the negative energy enters the inside of the variable curtain 120, the negative energy is the inner projection 150 or the lattice structure ( The performance of diffusing the sound energy may be enhanced by being reflected by the collision by 160). When the sound energy diffuses, the reverberation time increases due to an increase in the resonance of the indoor space.

<Example 3>

Hereinafter, a reverberation variable device configured based on a reverberation variable unit according to a third embodiment of the present invention will be described with reference to FIGS. 9 to 10.

9 is a perspective view of one reverberation variable unit 100 according to the third embodiment of the present invention, and FIG. 10 is a plan view of the reverberation variable unit 100 according to the third embodiment of the present invention.

9 and 10, the reverberation variable device according to the third embodiment of the present invention may include a reverberation variable unit 100 and an expansion means 200.

The reverberation variable unit 100 is configured to have an approximately hexahedral or ellipsoidal shape when inflated, and may absorb, reflect, or diffuse in the same manner as in the above-described embodiment. The reverberation variable portion 100 of the reverberation variable device according to the third embodiment has a plurality of curved portions 170 along a length extending parallel to both sides. That is, both sides on the outer side may be formed in a substantially corrugated shape, a corrugated pipe shape, an accordion shape, or a bellows shape, and may be formed in the same shape on the inner side depending on the shape of the outer side. The material of the variable membrane 120 in the reverberation variable portion 100 is polyester, such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT) or polyethylene naphthalate (PEN), polycarbonate, polyolefin, For example, polyethylene, polypropylene or polybutylene, polyvinyl resin, such as polyvinyl chloride, polyvinylidene chloride or polyvinyl acetal, cellulose ester resin, such as cellulose triacetate or cellulose acetate, can be used in various ways.

The expansion means 200 is configured to expand or compress the reverberation variable portion 100 by being connected to the reverberation variable portion 100, as described above. The expansion means 200 may expand or compress the reverberation variable portion 100 using the air blower 210, but may also expand it by pulling both sides of the reverberation variable portion 100 by motor driving. It is also possible for the user to inflate or compress manually. When expanding or compressing, it may expand or compress in the same direction as the arrow.

11 is a view schematically showing reflection and diffusion of sound energy in a reverberation variable device according to a third embodiment of the present invention.

As illustrated in FIG. 11, the reverberation variable unit 100 may be expanded or compressed by the expansion means 200. When the reverberation variable portion 100 expands by the expansion means 200, as the volume inside the variable curtain 120 increases, a plurality of curved portions 170 also increase in volume. Accordingly, the negative energy incident into the variable curtain 120 may be reflected by colliding with a plurality of curved parts 170, and thus the negative energy may be diffused into the indoor space. Therefore, in the third embodiment, when the reverberation variable unit 100 expands, the amount of sound energy reflected and diffused by the curved portion 170 increases, so that the reverberation time of the indoor space can be increased.

On the other hand, when the reverberation variable portion 100 is compressed by the expansion means 200, the volume inside the variable curtain 120 decreases, and the number of curved portions 170 also decreases. Accordingly, the negative energy incident into the variable curtain 120 is less colliding with the curved portion 170 than when it is expanded, so that the amount of reflected negative energy is reduced, and accordingly, it is diffused into the indoor space. Less. Therefore, in the third embodiment, when the reverberation variable unit 100 is compressed, the reverberation time of the indoor space can be reduced by reducing the aroma in which sound energy is reflected and diffused by the curved portion 170.

<Example 4>

12 is a perspective view of one reverberation variable unit according to a fourth embodiment of the present invention, and FIG. 13 is a cross-sectional view of a reverberation variable unit according to a fourth embodiment of the present invention.

12 to 13, the reverberation variable device according to the fourth embodiment of the present invention may include a reverberation variable unit 100 and a control unit (not shown).

The reverberation variable unit 100 is respectively installed on one side of a plurality of seats located inside an indoor space, for example, a concert hall or a multi-purpose venue, and the sound reverberation time generated in the indoor space is controlled by adjusting sound absorption, reflection, or diffusion. It is a configuration to vary. The reverberation variable portion 100 may be installed on, for example, the front, back, or both sides of the back of the audience chair.

The control unit (not shown) is configured to control sound absorption, reflection, or diffusion by controlling the plurality of reverberation variable units 100, respectively.

Here, the reverberation variable unit 100 may be provided, for example, in a form in which a perforated plate (not shown) and a sound absorbing material (not shown) are stacked. That is, in the reverberation variable portion 100, two perforated plates are successively stacked, and the sound absorbing material is stacked with one perforated plate of the two perforated plates. The negative energy may move to the hole formed in the perforated plate, and the negative energy may move to the sound absorbing material through the hole of the perforated plate. Accordingly, when the holes of the two perforated plates are matched by the control unit, sound energy is absorbed by the sound absorbing material, so that the sound absorbing performance can be enhanced, and accordingly, the reverberation time can be reduced. On the other hand, if the holes of the two perforated plates are inconsistent, the sound energy cannot be absorbed by the sound absorbing material and reflected by the perforated plate may increase the reverberation time. In this way the perforated plate is driven, the perforated plate is connected to the motor so that the control unit controls the motor so that the perforated plate can be controlled.

As a material for the sound absorbing material, any material that absorbs sound energy such as polyester, polyurethane, glass wool, mineral wool, and melamine foam can be used, and perforated plates can also reflect sound energy such as processed wood, metal, and plastic. Ramen can be used.

As a result, in the fourth embodiment, by controlling the reverberation variable unit 100 provided on the back of the seat chair, the reverberation time can be increased or decreased at a distance close to the seat occupant at the seat occupant seated, Accordingly, it is possible to provide rich sound quality to the occupant of the audience.

In addition, an intake surface 131 may be additionally provided on the front surface of the back of the audience chair. By providing the suction surface 131 on the front surface as described above, the audience may sit comfortably when seated, and the effect of sound absorption may be further increased as necessary.

In addition, the reverberation variable portion 100 may be installed on the front surface of the back of the audience chair. In this case, the suction surface 131 which is additionally provided on the front surface of the back of the audience chair may be provided on the back side.

<Control method of reverberation variable part>

Hereinafter, a control method of the reverberation variable unit 100 will be described.

14 is a flowchart illustrating a method for varying reverberation according to an embodiment of the present invention.

As shown in FIG. 14, initially, parameters related to the reverberation variable module for a plurality of modes are set according to a user input. <S141>

The plurality of modes may be set differently according to the purpose of using the indoor space. For example, the first mode can be set to vary the reverberation time by allowing the optimal parameter to be output when the indoor space is used for the concert, and the second mode is the optimal parameter when the indoor space is used for the lecture. The reverberation time can be set to be variable by allowing the to be output, and the third mode can be set to vary the reverberation time by allowing the optimal parameter to be output when the indoor space is used for the musical. That is, in each mode, an output variable corresponding to an input variable or an optimal parameter may be set differently.

Here, the optimal parameter corresponds to the output variable of the reverberation variable unit 100 or the reverberation variable module for the input variable, and may include parameters related to the expansion or compression of the volume of the reverberation variable module.

Then, one of the plurality of modes is selected. <S142> That is, the user selects a plurality of modes according to a specific use purpose of the indoor space. As described above, the plurality of modes include a mode in which an indoor space is used for a concert (first mode), a mode in which an indoor space is used for a lecture (second mode), and a mode in which an indoor space is used for a musical (first mode) 3 modes), and the number of modes may be increased according to various purposes.

Finally, the reverberation variable module is operated based on the parameter corresponding to the selected mode. <S143> The reverberation variable module can be varied by expanding or compressing based on the selected mode to a target time.

<Setting-related deep learning>

Hereinafter, it will be described that the controller derives the optimum parameter according to the user's input variable by learning to set the optimal parameter as the output variable for the input variable for a specific mode.

15 is a diagram schematically showing deriving an optimal parameter for each mode using deep learning in the reverberation variable method according to the present invention.

As shown in FIG. 15, the control unit is provided with at least one deep learning engine, so that the deep learning engine derives optimal parameters based on a plurality of learning data sets composed of input variables and output variables corresponding to a plurality of modes. You can learn algorithms. Accordingly, when a user inputs an input variable for a specific mode in order to use the indoor space for a specific purpose, the controller derives an optimal parameter based on the output variable learned for the input variable, and based on the derived optimal parameter. The reverberation variable unit 100 may be controlled.

For example, the user or the expert may configure the learning data set 1 for the first mode and store it in the deep learning engine. The learning data set 1 may include structure-related learning data such as area, height, and width as input variables, and as output variables for the input variables, the volume of the reverberation variable unit 100 and the slope of the reverberation variable unit 100 Alternatively, optimal parameters for a distance between the reverberation variable units 100 provided in a plurality may be configured. That is, when the area of the indoor space is A1, the height of the indoor space is B1, and the width of the indoor space is C1, the optimal parameter corresponding to the volume of the reverberation variable unit 100 is D1, and the space between the reverberation variable units 100 is The distance is stored as E1.

Therefore, the deep learning engine learns while performing an algorithm that derives an optimal parameter that is an output variable by changing the coefficient values for a plurality of input variables. The number of data X1 to Xn of the training data set 1 stored in the deep learning engine may be at least 100 or more. Some of these are generated for verification and test data.

In this way, the deep learning engine can learn an algorithm for deriving an optimal parameter for the first mode, and learn an algorithm for deriving the optimal parameter for the second mode, and as a result, derive an optimal parameter for the n-mode. To learn the algorithm.

Then, for example, when a user inputs an input variable for the second mode, the deep learning engine derives an optimal parameter for the input variable and delivers the information to the control unit, and the control unit expands the means 200 based on the transmitted information. By controlling the expansion or compression of the reverberation variable unit 100 to achieve a target reverberation time in the second mode.

The set of learning data used in the present invention may be stored in a database, and the database may interwork with a control unit and a deep learning engine.

On the other hand, the deep learning engine learns a set of learning data for a specific mode to derive an optimal parameter for a user's input variable. Signals that are slightly different from each other may be input even within a specific mode. This will be described with reference to FIG. 16.

16 is a diagram schematically showing that optimal parameters for input variables are differently derived in a specific mode using deep learning in the reverberation variable method according to the present invention.

As shown in FIG. 16, the learning data set 1 may include the amplitude, frequency, and period of the signal as input variables, and the output variable for the input variable is the volume of the reverberation variable unit 100, and the reverberation variable unit The optimal parameter for the slope of the 100 or the distance between the reverberation variable units 100 provided in plural may be configured.

If the first mode is a mode related to lecture, different signals may be received because the tone is different when the lecturer is a man and a woman. Therefore, when the lecturer is a man and a woman, when the reverberation variable unit 100 is controlled to vary different reverberation times, effective sound quality can be generated inside the indoor space.

For example, when a man has a low tone, the reverberation time is controlled long, and when a woman has a high tone, the reverberation time is controlled short. Accordingly, the expert can train the deep learning engine to derive the optimal parameter by constructing a learning data set and storing and learning the optimal parameter corresponding to the input variable and the input variable in the deep learning engine.

Therefore, the deep learning engine learns while performing an algorithm that derives an optimal parameter that is an output variable by changing the coefficient values for a plurality of input variables. The number of data V1 to Vn of the training data set 1 stored in the deep learning engine may be at least 100. Some of these are generated for verification and test data.

As a result, when an acoustic signal is received while a specific mode is being performed, the control unit derives an optimal parameter based on the output variable learned for the input variable, and controls the reverberation variable unit 100 based on the derived optimal parameter. Can be. In this process, the signal may proceed based on the signal received in a certain period. That is, after receiving the male instructor's voice signal for 3 to 5 minutes in a specific mode, the control unit may control the reverberation variable unit 100 based on the optimal parameter derived by the deep learning engine using this as an input variable.

Also, the learning of the deep learning engine may be performed in the second mode and the third mode.

In addition, it is also possible to have different modes in the plurality of reverberation variable units 100 having different installed positions. That is, the reverberation variable unit 100 installed on the wall of the indoor space may be controlled in the first mode, and the reverberation variable unit 100 provided on the ceiling may be controlled in the second mode.

In addition, a deep learning engine may derive an optimal parameter by learning a set of learning data for each reverberation variable unit 100 in a specific mode. That is, the reverberation variable portion 100 provided on the wall of the indoor space and the reverberation variable portion 100 provided on the ceiling learn different sets of learning data in a specific mode, and differ from each other in a specific mode for a user's input variable. Is controlled to vary the reverberation time.

Therefore, the reverberation time can be easily changed by controlling the reverberation variable unit 100 according to a value input by a user for a specific mode based on the learned learning data set.

<Determine mode>

Hereinafter, it will be described that the controller determines the mode by using deep learning.

17 is a diagram schematically showing that a controller determines a mode by using deep learning.

As shown in FIG. 17, a deep learning engine learns the characteristics of sound waves or signals received in an indoor space initially. Signal characteristics include information on various genres and patterns such as musicals, voices, and performances. The deep learning engine learns an algorithm for deriving what kind or type of signal for each signal using information about the genre and pattern of these signals as input variables.

Thereafter, when a signal is received in the indoor space, the deep learning engine may analyze the signal to identify a genre and pattern, and determine a mode corresponding to the learned signal based on the identified information.

After the mode is determined, information on the corresponding mode is transmitted to the control unit, and the control unit may control the reverberation variable unit 100 based on the received information on the mode to change the reverberation time for the corresponding mode.

When the deep learning engine receives the signal, the reverberation time can be easily varied according to the purpose of use by controlling the reverberation variable unit 100 as a control unit by automatically deriving a useful mode.

<Mode fine adjustment>

Hereinafter, a process of finely adjusting the reverberation variable unit 100 by determining whether the current reverberation time is within an allowable range in a corresponding mode while controlling the reverberation variable unit 100 in one mode will be described. .

18 is a schematic diagram illustrating finely controlling the reverberation variable unit 100 by determining whether the reverberation time is within an allowable range in one mode.

As shown in FIG. 18, the reverberation time of the indoor space is varied by controlling the reverberation variable unit 100 in a specific mode. In this state, the controller may determine the reverberation time t occurring in the corresponding mode in the indoor space every specific period. That is, the control unit determines t to determine whether the reverberation time is between an allowable range or a reference range t1 to t2 for the reverberation time of the corresponding mode.

If t is less than t1, since the reverberation time has not secured sufficient reverberation time in the corresponding mode, the controller may adjust the reverberation variable unit 100 by increasing the reverberation time. For example, by reducing the volume of the reverberation variable portion 100, the amount of sound energy absorbed by the reverberation variable portion 100 is reduced.

On the other hand, if t is greater than t2, since the reverberation time is unnecessarily increased in the corresponding mode, the control unit may adjust the reverberation variable unit 100 by reducing the reverberation time. For example, by increasing the volume of the reverberation variable portion 100, the amount of sound energy absorbed by the reverberation variable portion 100 is increased.

Here, the values of t1 and t2 are values loaded from the memory, and may be determined according to a mode in which reverberation time is varied.

In addition, if t is included between t1 and t2, the control unit may maintain the current state without controlling the reverberation variable unit 100 to maintain the reverberation time.

As described above, the reverberation time is periodically determined in one specific mode to finely adjust the reverberation variable unit 100 to help maintain the reverberation time in the mode.

<Control of variable reverberation according to the number of seats>

On the other hand, in the present invention, it is also possible to control the reverberation variable portion according to the number of seats.

 The number of seat chairs is the same as the number of seat chairs because the reverberation variable portion provided in the seat chair is provided one by one. Therefore, the control unit generates a measurement sound source that generates a signal to a plurality of speakers, detects sounds generated from a plurality of microphones, and determines the number of seats in the sound field based on the detected sound.

For example, the sound generated from a plurality of speakers may be different from the frequency characteristic of the sound initially generated by being partially absorbed by the reverberation variable unit 100 provided in the audience chair. Accordingly, the control unit may analyze the detected frequency characteristics of the sound to detect the number of seats, and correct the reverberation time according to the range of the number of seats.

That is, it is determined whether the number of seats is large or small according to the range of the number of seats, and the reverberation time is adjusted even in the same mode according to the number of seats. If the number of seats is small, the audience is small, so the reverberation variable is controlled in the direction of reducing the reverberation time. If the number of seats is large, the reverberation time can be controlled in the direction of increasing reverberation time.

In addition, the width of increasing or decreasing the reverberation time can be controlled according to the number of seats. That is, the reverberation variable unit 100 changes the reverberation time in correspondence with the number of seats, such as a decrease of 0.1 second when the number of seats is 100 to 200, and a decrease of 0.3 when the number of seats is 200 to 300. Can be controlled.

The range of the number of such seats and the corresponding reverberation time can be stored in the database.

<Reverberation variable system structure>

Hereinafter, the reverberation variable system will be described.

19 is a view showing a reverberation variable system in the present invention.

19, the reverberation variable system according to the present invention may include a reverberation variable module and a control device.

At least one reverberation variable module is installed in the indoor space, and by adjusting sound absorption, reflection, or diffusion through expansion and compression, the reverberation time of the sound generated inside the predetermined space can be varied.

The control device can control expansion and compression of the reverberation variable module.

In such a reverberation variable system, the control device can perform parallel software control as well as hardware control. For example, the control device hardware-controls the reverberation variable module according to the mode of the software control method based on the data learned by the deep learning engine to change the reverberation time or determines the reverberation time to determine the reverberation variable unit It is to finely adjust (100).

However, when the control device performs both software control and hardware control at the same time, the load on the system may be increased, which may affect the life of the reverberation variable system. Therefore, if necessary, hardware control can be performed by a control device, and software control can be performed by a user terminal.

The user terminal derives a parameter corresponding to the mode according to a user's input variable and may provide a control signal to the control device to control the reverberation variable module to expand or compress to a predetermined volume. It is possible for such a user terminal to communicate with a server and load learning data stored in the server.

The above-described preferred embodiments of the present invention are disclosed for purposes of illustration, and those skilled in the art having ordinary knowledge of the present invention will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. And additions should be considered to fall within the scope of the claims of the present invention.

100: reverberation variable portion
110: support frame
120: variable curtain
130: sound absorbing material
131: sound absorbing surface
140: cavity
150: inner protrusion
160: grid structure
170: curved part
200: expansion means
210: air blower
220: valve

Claims (19)

A reverberation variable unit installed in a predetermined indoor space and adjusting sound absorption, reflection, or diffusion through expansion or compression to vary a reverberation time of sound generated inside the predetermined indoor space; And
Controlling the reverberation variable unit includes a control unit for adjusting sound absorption, reflection or diffusion,
The control unit
A reverberation variable system in which at least one deep learning engine is provided and the deep learning engine derives parameters based on a plurality of learning data sets composed of input and output variables corresponding to a plurality of modes to control the reverberation variable unit .
According to claim 1,
The plurality of training data sets
Structure-related learning data that is at least one of the volume, width, width or height of the indoor space as an input variable,
A reverberation variable system, characterized in that it is learning data related to an acoustic signal that is at least one of an amplitude, a period, and a frequency of an acoustic wave or an acoustic signal.
According to claim 1,
The plurality of training data sets
A reverberation variable system comprising an output variable as a volume of the reverberation variable portion, a slope of the reverberation variable portion, or a distance between the reverberation variable portions provided in plural.
According to claim 1,
The deep learning engine
The learning data set is learned differently according to a location and a mode in which the reverberation variable is installed,
The control unit
A reverberation variable system characterized in that a plurality of reverberation variable units are controlled differently from each other according to the different data sets in one mode.
According to claim 1,
The deep learning engine
Learning the genre or pattern of the sound wave or sound signal received in the predetermined indoor space,
A reverberation variable system characterized by determining the mode based on the learned genre or pattern.
According to claim 1,
The control unit
In a state in which controlling the reverberation variable corresponding to one mode is being performed,
After determining the reverberation time based on the received acoustic signal, the reverberation variable is characterized in that the reverberation variable is controlled to increase or decrease the reverberation time according to whether the reverberation time is included within a range allowed in the mode. system.
According to claim 1,
The reverberation variable system further comprises a user terminal interlocked with the control unit to provide a control signal.
delete delete delete delete delete delete delete delete delete delete delete delete

Images