KR102280302B1 - Listener's height correction system, Standard audiometric booth with a sound field examination system and the sound field examination system, including the listener's height correction system - Google Patents

Abstract

The present invention relates to a sound field inspection technology, and more specifically, a listener key correction system that provides a standard for the height of a large speaker used in a standard soundproof booth and a listener's ear to be located on the same plane, and the auxiliary structure. It relates to a sound field inspection system including a standard sound insulation booth installed with the sound field inspection system.

Description

A listener's height correction system, a sound field inspection system including the listener's key correction system, and a standard sound insulation booth in which the sound field inspection system is installed {Listener's height correction system, Standard audiometric booth with a sound field examination system and the sound field examination system; including the listener's height correction system}

The present invention relates to a sound field inspection technology, and more specifically, a listener key correction system that provides a standard that the height of a large speaker used in a standard soundproof booth and the listener's ear can be located on the same plane, the listener key It relates to a sound field inspection system including a correction system and a standard soundproof booth in which the sound field inspection system is installed.

Currently, millions of people around the world suffer from hearing loss, many of whom are unaware of their hearing loss. Decreased hearing ability can be due to a number of factors including age, health, occupation, injury and illness. Hearing loss can significantly reduce quality of life, damage relationships, and reduce access to employment. Recently, the number of people with hearing loss is increasing due to the use of sound devices, an increase in the proportion of the elderly population, and an increase in the noise environment. Accordingly, the demand for hearing aids is rapidly increasing. Development of high-performance digital hearing aids that can be exposed to various noise environments This is accelerating.

In general, a hearing test refers to a test that measures the sensitivity of hearing, such as whether a sound or voice can be heard well. To perform a hearing test, the operator (doctor, audiologist) uses an audiometer, which is a signal generator that generates pure tones of a size and frequency that can be changed. Hearing is measured and the tester's hearing level is diagnosed based on the measured test results. drop the Usually, hearing tests focus on frequencies in the range of 250 Hz to 8 kHz because this range contains the sounds necessary for effective communication in everyday life. In other words, the hearing tester used in the hearing test generates a loud sound for each frequency and then gradually reduces the size, so that the minimum decibel that a person can hear is recorded on the audiogram, and based on the recorded audiogram, the examiner Diagnose your hearing condition.

As mentioned above, when there is a loss of 25 dB or more in a hearing test, it is generally called hearing loss. According to statistics in various countries, 2-4% of children and about 21% of the nation are reported to have hearing loss symptoms, and the age will increase. As the number of people with hearing loss increases, about 81% of people over the age of 70 will have hearing loss. Hearing loss patients account for about 25% of the patients who visit the otolaryngology department, so it is true that not a few people have hearing problems to varying degrees.

In patients with hearing loss, hearing aids such as general hearing aids, implantable hearing aids, and cochlear implants are expected to improve hearing. A sound field test is required.

Hearing tests using the existing sound field test system usually performed in hospitals are performed by placing a speaker 1 m in front of the subject at an angle of 45 degrees to the left and right of each in a soundproof booth, and presenting a sound (pure tone or speech) using a hearing test device outside the soundproof booth. It is a test to see if the subject detects it. Since the currently used sound field inspection system has to place a fixed large speaker 1m in front of the subject, a standard soundproofing booth with a size of 2 x 2m is mainly used.

However, for accurate sound field inspection, the distance between the speaker and the listener must always be kept constant at the corrected value, and the speaker must be located at the listener's ear height. As shown in FIGS. 1A and 1B, the current sound field inspection In the system, the listener sits on a chair located in the diagonal center of the sound field inspection system and adjusts the height of the speaker to fit the speaker to the listener's ear height. There is a problem in that it is difficult to maintain an accurate distance, which causes an error in the inspection. In addition, in order to conduct a hearing test under noise or conduct a directional test during a sound field hearing test, as shown in 1c, many speakers are positioned around the listener. At this time, the speaker is placed in parallel to the speaker so that the height of the listener's ear is parallel to the speaker. It tends to be too cumbersome to adjust the height of each.

Republic of Korea Patent Publication No. 10-2014-0098615

As a result of a number of studies, the present inventors fixed the height of the speaker at a certain position, and developed a listener key correction system having a structure that can be adjusted so that the listener's ear comes to the same position as the fixed speaker even if the height of the listener is different. was completed.

Therefore, it is an object of the present invention to easily obtain the standard that the speaker required by the ISO8253-2 standard, which is the standard for sound field inspection, must be located at the listener's ear level and that the distance between the speaker and the listener must be kept constant. It is to provide a listener key correction system having a structure that can be easily applied to a standard soundproof booth installed with a sound field inspection system currently used in large hospitals as well as having a structure that can do it.

Another object of the present invention is a sound field including a listener key correction system that not only enables accurate sound field inspection according to the ISO8253-2 standard, which is a standard for sound field inspection, but also increases convenience of sound field inspection by providing a listener key correction system It is to provide an inspection system and a standard soundproof booth in which the system is installed.

The object of the present invention is not limited to the object mentioned above, and even if not explicitly mentioned, the object of the invention that can be recognized by those of ordinary skill in the art from the description of the detailed description of the invention to be described later may also be included. .

In order to achieve the above object of the present invention, the present invention is a flat substrate portion disposed on the bottom surface; a vertical length portion having a length equal to or longer than the distance between the center of the sound field inspection speaker and the ground, and formed in the z-axis direction perpendicular to the substrate portion on the rear surface of the substrate portion; a head reference part installed on the upper end or upper front surface of the vertical length part; and a chair having a structure in which the height is adjustable according to the sitting height of the listener disposed on the substrate portion; and a listener height correction system including a.

In a preferred embodiment, the head reference part is provided with a curved space in which the listener's head can be located, and the portion forming the center of the curved space is installed at a position that coincides with the center of the upper end or upper front surface of the vertical length part. a curved member; Front support members formed on both front sides of the curved member; and a support member for installing a calibrator that is detachably installed in the y-axis direction on the front mounting member.

In a preferred embodiment, the head reference portion is a support member installed in the x-axis direction on the upper end or upper portion of the vertical length; a connecting support member installed in the y-axis direction vertically from the front center of the support member; a curved surface member having a curved space in which the listener's head can be located, the rear surface of the central portion of the curved space and the front surface of the connection support member being coupled to each other to be installed; Front support members formed on both front sides of the support member; and a support member for installing a calibrator that is detachably installed in the y-axis direction on the front mounting member.

In a preferred embodiment, the head reference part further comprises an upper surface holding member formed on the curved member or the support member to which two distance check parts are installed.

In a preferred embodiment, the upper surface mounting member is formed to form a right angle when two straight lines connected to the center of the front portions of the two speakers disposed to face each other in a state in which the two distance check units are installed respectively extend and meet.

In a preferred embodiment, the chair is installed detachably and detachably from the substrate so that the listener's head is positioned on the head reference portion when the listener sits.

In a preferred embodiment, the height of the chair is adjusted so that the center of the listener's ear is located on the head reference portion when the listener sits.

In a preferred embodiment, the support member for installing the calibrator is removed together with the calibrator after correction for the sound emitted from the speaker is finished.

In a preferred embodiment, the substrate portion is flat or on the surface area on which the chair is placed so that the listener's head is positioned at the head reference portion when the listener sits on the chair and adjusts the height in consideration of the position of the vertical portion. It further includes a recognition member for arranging a chair that is formed three-dimensionally.

In addition, the present invention is a speaker unit including two speakers arranged in a straight line at a predetermined distance; any one of the above-described listener key correction systems disposed at the vertex positions of an isosceles triangle having a straight line connecting the two speakers as a base; and two calibrators installed in the head reference unit of the listener key correction system.

In a preferred embodiment, the base of the isosceles triangle is a straight line connecting the centers of the front surfaces of the two speakers and is located on the same plane parallel to the ground, and connects the centers of the front surfaces of the two speakers and the center of the head reference part. The two speakers are arranged such that each straight line is perpendicular to the front surface of each speaker and is located on the same plane parallel to the ground.

In a preferred embodiment, the two speakers and the listener key correction system are arranged so that the angle of the base angle is 45 degrees in the isosceles triangle and the angle of the apex is a right angle.

In a preferred embodiment, it further includes a distance check unit for maintaining a constant distance between the front surface of the speaker and the head reference unit.

In a preferred embodiment, the distance check unit is a laser range finder.

In a preferred embodiment, the height of the listener height correction system is 1.2 m, and the equilateral side of the isosceles triangle is 1 m.

In addition, the present invention provides a standard soundproof booth including the sound field inspection system described above.

The listener key correction system of the present invention as described above requires that the speaker required by the ISO8253-2 standard, which is the standard for sound field inspection, be located at the listener's ear height and that the distance between the speaker and the listener is kept constant. It not only has a structure in which standards can be easily obtained, but also has a structure that is easy to apply to standard soundproof booths equipped with sound field inspection systems currently used in large hospitals.

In addition, the sound field inspection system of the present invention and the standard soundproof booth installed with the system are equipped with a listener key correction system, so that accurate sound field inspection is possible according to the ISO8253-2 standard, which is the standard for sound field inspection, and the convenience of sound field inspection is also provided. can be increased

These technical effects of the present invention are not limited only to the above-mentioned range, and even if not explicitly mentioned, the effects of the invention that can be recognized by those of ordinary skill in the art from the description of the specific content for the implementation of the invention to be described later of course included.

1A to 1C are diagrams illustrating a conventional sound field inspection system.
Figure 2a is a perspective view of the combined arrangement of the listener key correction system according to an embodiment of the present invention, Figure 2b is a perspective view of the separated arrangement.
Figure 3a is a perspective view of the combined arrangement of the listener key correction system according to another embodiment of the present invention, Figure 3b is a perspective view of the separated arrangement.
4A is an enlarged perspective view of the head reference unit of the listener key correction system shown in FIG. 2A, and FIG. 4B is an enlarged perspective view of the head reference unit of the listener key correction system illustrated in FIG. 3A.
5A is a schematic layout diagram of a sound field inspection system including the listener key correction system shown in FIG. 2A, and FIG. 5B is a schematic layout diagram of the sound field inspection system including the listener key correction system shown in FIG. 3A.
6A is a plan view of the sound field inspection system shown in FIG. 5A, and FIG. 6B is a plan view of the sound field inspection system shown in FIG. 5B.

The terms used in the present invention are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the description of the invention exists, but is not limited to one or more other It should be understood that it does not preclude the possibility of addition or presence of features or numbers, steps, operations, components, parts, or combinations thereof.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention. does not

In interpreting the components, it is interpreted as including an error range even if there is no separate explicit description. In particular, when the terms "about", "substantially", etc. of degree are used, they may be construed as being used in a sense at or close to the numerical value when manufacturing and material tolerances inherent in the stated meaning are presented. .

In the case of a description of a temporal relationship, for example, if the temporal relationship is described as 'after', 'following', 'after', 'before', etc., 'immediately' or 'directly' This includes cases that are not continuous unless ' is used.

Hereinafter, the technical configuration of the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Like reference numbers used to describe the invention throughout the specification refer to like elements.

The technical feature of the present invention is that it is possible to easily obtain the standard that the speaker required by the ISO8253-2 standard for sound field inspection should be located at the level of the listener's ear and that the distance between the speaker and the listener should be kept constant. A listener key correction system having a structure that not only has a structure, but also has a structure that is easy to apply to a standard soundproof booth installed with a sound field inspection system currently used in a large hospital, a sound field inspection system including the key correction system, and the sound field inspection system It is in a standard soundproof booth that includes.

That is, as shown in Table 1 below, there is a difference in sitting height between males and females as well as between males and females, even for the same gender, depending on age, there is a difference of 10 cm or more and 30 cm or more. Accordingly, the height of the speaker must be maintained at a certain distance as well. In the conventional sound field inspection system in which the speaker is installed with the structure as shown in FIGS. 1A and 1C, it is clear that it is very difficult to correct the height of the speaker according to the physical characteristics of the listener. , even if a speaker having the same structure as in FIGS. 1A and 1B is used, if the listener key correction system of the present invention is installed, accurate sound field inspection is possible according to the ISO8253-2 standard for sound field inspection, and the convenience of sound field inspection is also because it can be increased.

Accordingly, the listener key correction system of the present invention includes a flat substrate portion disposed on the bottom surface; a vertical length portion having a length equal to or longer than the distance between the center of the sound field inspection speaker and the ground, and formed perpendicular to the substrate portion on the rear surface of the substrate portion; a head reference part installed on the upper end or upper front surface of the vertical length part; and a chair disposed on the substrate and having a structure in which the height can be adjusted according to the sitting height of the listener.

In addition, the sound field inspection system of the present invention includes a speaker unit including two speakers arranged in a straight line at a predetermined distance; the above-described listener key correction system disposed at a vertex position of an isosceles triangle having a straight line connecting the two speakers as a base; and two calibrators installed in the head reference unit of the listener key correction system.

In addition, the standard soundproofing booth of the present invention includes the sound field inspection system described above.

Figure 2a is a perspective view of the combined arrangement of the listener key correction system according to an embodiment of the present invention, Figure 2b is a separate arrangement perspective view, Figure 3a is a perspective view of the combined arrangement of the listener key correction system according to another embodiment of the present invention and Figure 3b is a perspective view of the separated arrangement. 4A is an enlarged perspective view of the head reference unit of the listener key correction system shown in FIG. 2A, and FIG. 4B is an enlarged perspective view of the head reference unit of the listener key correction system illustrated in FIG. 3A. 5A is a schematic layout diagram of a sound field inspection system including the listener key correction system shown in FIG. 2A, FIG. 5B is a schematic layout diagram of the sound field inspection system including the listener key correction system in FIG. 3A, and FIG. 5a is a plan view of the sound field inspection system, and FIG. 6b is a plan view of the sound field inspection system shown in FIG. 5b.

An example of the listener's key correction system according to the first embodiment of the present invention will be described with reference to FIGS. 2A, 2B and 4A.

As shown in FIGS. 2A and 2B , the listener key correction system 100 of the present invention includes a substrate unit 110 , a vertical length unit 120 , a head reference unit 130 , and a chair 140 .

The substrate 110 is a component installed on the ground with a predetermined width, and as long as it has a flat plate shape that can be disposed parallel to the floor, the shape and material are not limited. As shown as an embodiment, a square plate-shaped member having a width of 80 cm and a thickness of 1.5 cm was adopted as the substrate unit 110 .

If necessary, the surface of the substrate unit 110 for chair placement in consideration of the position at which the vertical portion 120 is installed and indicates the portion where the lower surface of the chair 140 will be located in the area where the chair 140 is placed. A recognition member 111 may be formed. The recognition member 111 for chair placement may be formed in a planar shape like a figure or a line drawn on the surface of the substrate 110 , or may be formed in a three-dimensional structure such as an insertion groove matching the lower surface of the chair 140 .

The vertical length portion 120 is a component that is integrally or detachably formed vertically on the substrate portion 110, and as long as it has a length equal to or longer than the distance between the center of the sound field inspection speaker and the ground, the shape and material is not limited As shown as an embodiment, the vertical length portion 120 may be provided with a plate-shaped length member having a predetermined thickness and width adjacent to one edge of the substrate portion 110 .

The head reference unit 130 is a part where the listener's head is located. In particular, when seated for the sound field examination, the head reference unit 130 not only provides a standard so that the listener's ear is positioned in a straight line with the center of the speaker installed for the sound field examination, but also the listener's head , as a component that enables accurate sound field inspection by excluding the possibility of moving back and forth, it may be integrally or detachably installed on the upper end or upper front surface of the vertical length portion 120 .

As shown in FIG. 4A , the head reference unit 130 includes a curved member 131 , a front mounting member 132 , and a support member 133 for installing a calibrator. If necessary, the upper surface mounting member 134 may be further included.

The curved member 131 is a part where the listener's head is located, and as long as it is a member with a curved surface space 131a that does not cover the ears when at least the listener's head is located, the shape and material are not limited, but one implementation As an example, as shown, the horizontal section of the curved space 131a forms a curved surface having a shape of a crescent or a lower moon, and both sides thereof are formed to have a plane perpendicular to the ground so that the front mounting member 132 can be formed. it could be In addition, since the curved member 131 is installed in the vertical portion 120 in which the horizontal cross-section of the curved space 131a is parallel to the ground, the other surface portion opposite to the center of the curved space 131a is the vertical length portion 120 . For example, it may be formed to have a shape that is easy to install on the surface, for example, to form a flat surface having a predetermined area, and to have an upper surface of the upper surface having an area in which the upper surface holding member 134 can be formed.

The front mounting member 132 is a component formed on both front surfaces of the curved member 131 constituting both ends in a state in which the curved member 131 is installed in the vertical length portion 120, and a support member 133 for installing the calibrator. The shape is not limited as long as it can support the .

The calibrator installation support member 133 is a component for supporting the calibrator 300 by being detachably installed in the y-axis direction from the front mounting member 132, and the listener key correction system 100 is standard. After the correction for the sound emitted from the speaker in the state installed in the soundproof booth is finished, it is removed together with the calibrator 200 .

The upper surface holding member 134 is a component formed on both sides of the front surface of the curved surface member 131 constituting both ends in a state in which the curved surface member 131 is installed on the vertical length portion 120, and two distance check units 400 ) as long as it can be installed, its shape is not limited, but as an embodiment, a groove into which the distance check unit 400 can be inserted may be formed on both sides of the front upper portion of the curved member 131 as an embodiment, in particular, two In a state in which the distance check unit 400 is installed, when two straight lines connected to the center of the front portions of the two speakers 210 and 220 arranged to face each other extend and meet, they may be formed to form a right angle.

The chair 140 is a component having a structure that is disposed on the substrate 110 and has a structure in which the height can be adjusted according to the seated height of the listener. When the listener is seated in the state of being placed on the substrate 110, the head reference unit 130. It may be formed in a structure in which the height is adjusted so that the center of the listener's ear is located, and may be implemented as a structure that is integrally or detachably attached to the substrate unit 110 , or may be implemented completely separately from the substrate unit 110 . .

As shown, when the chair 140 is formed in a structure related to the substrate 110, the chair 140 is formed on the pedestal 141 installed on the ground as an embodiment, and is formed on the pedestal to raise the feet. The footrest 142, which is formed on the footrest, and is integrally formed at the center of the seat portion 143 and the pedestal 141 that is formed on the upper portion of the footrest to provide an area where the listener can sit, passes the footrest 142, and the handle 144a for height adjustment It is formed as a center support structure 144 connected to the seat portion 143 in a structure that can be adjusted in height through the seat portion 143, and the recognition member 111 for chair placement formed on the surface of the substrate portion 110 is the pedestal ( 141) can be implemented as a three-dimensional structure forming an insertion groove having a structure consistent with the lower surface).

Next, an implementation example of a listener key correction system according to a second embodiment of the present invention will be described with reference to FIGS. 3A, 3B and 4B .

As shown, in the listener key correction system 100 according to the second embodiment of the present invention, there is a part having a different configuration of the head reference unit 130 and the rest of the configuration is the listener according to the first embodiment described above. Since it is the same as the key correction system, only the technical components that differ among the configurations of the head reference unit 130 will be described in detail.

As shown in FIG. 4b , the head reference unit 130 includes a support member 135 , a connection support member 136 , a curved surface member 131 , a front mounting member 132 , and a support member 133 for calibrator installation. and an upper surface mounting member 134 .

The support member 135 is installed in the x-axis direction on the upper end or upper front surface of the vertical length portion 120 to support or mount the remaining components, and is integrally or detachably installed on the vertical length portion 120 . can be

The connecting support member 136 is a component that fixedly couples the curved member 135 by being spaced apart from the support member 135 by a predetermined distance, and the rear end thereof is vertically fixed to the front center of the support member 135, and the front end thereof is It may be fixed to the rear surface of the curved member 135 and installed in the y-axis direction. Therefore, since the position of the curved member 135 is determined according to the length of the connection support member 136, the connection support member 136 may have a structure in which the length is adjustable if necessary.

The curved member 131 is not directly fixed to the vertical length portion 120, only that it is vertically fixed to the front portion of the connecting support member 136, and the other configuration is the same as the curved member 131 of the first embodiment. can do. However, although the shape and size of the curved space 131a in the curved member 131 are the same, the front holding member 132 is not formed on the front surface thereof, and the upper surface holding member 134 is not formed on the upper surface thereof, so the curved surface Since the front portion of the member 131 does not necessarily have to be flat and the width of the upper surface may also be formed narrower, the curved member 131 may be implemented in a thin and sharp shape as a whole.

The front mounting member 132 is not formed on the curved surface member 131, but only the points formed on both sides of the connecting support member 136 fixedly installed in the front center of the support member 135 as the center of the front mounting member of the first embodiment. (132) and may be different.

The upper surface support member 134 is also not formed on the curved member 131, but only the points formed on both front surfaces of the connection support member 136 installed on the support member 135 as the center of the upper surface support member 134 of the first embodiment. may be different from

In this way, the head reference unit 130 of the second embodiment further includes a support member 135 and a connection support member 136, and the connection support member 136 is fixed to the front center of the support member 135 and installed. and the front support member 132 is formed on both sides of the connection support member 136 as a center, and the other configuration is different except that the upper surface support member 134 is formed on both sides on the upper part of the first embodiment. It may be implemented in the same way as the head reference unit 130 .

On the other hand, if the chair 140 has a structure separate from the substrate 110 in both the listener key correction system according to the first embodiment and the second embodiment, as long as it has a structure capable of height adjustment, a known chair will be used. In this case, a structure without a head part may be adopted even if there is no backrest or a backrest so as not to obstruct the position of the listener's head on the head reference part 130 . In this case, the recognition member 111 for seating arrangement formed on the surface of the substrate 110 may be formed in a planar structure like a figure or a line drawn on the surface of the substrate 110 .

In the listener key correction system 100 according to the first or second embodiment having the components as described above, the head reference unit 130 is installed at a predetermined height on the substrate unit 110 at a predetermined height ( If it is installed at the same height as the center of the speaker unit 200 for sound field inspection on the upper front or upper part of the 120), and is implemented with the chair 140 disposed on the substrate unit 110, even if the listener's sitting height is different, heavy Without the need to adjust the height of the speaker unit 200, using the head reference unit 130 whose height is aligned with the center of the speaker unit 200 as a reference point, the chair 140 allows the listener's head to come to the head reference unit 130. Just by adjusting the height, it is possible to easily and accurately set the position where accurate sound field inspection is possible regardless of the listener's physical characteristics.

Next, the sound field inspection system 1 of the present invention includes a listener key correction system 100 , a speaker unit 200 , and a calibrator 300 . If necessary, it may further include a distance check unit 400 .

The sound field inspection system 1 of the present invention includes a listener key correction system 100, and the speaker unit 200 and the calibrator 300 are arranged around the listener key correction system 100. It has its technical characteristics. In addition, since the listener key correction system 100 has the same structure as described above, the sound field inspection system 1 of the present invention includes the listener key correction system 100 of the structure shown in FIG. 2A as shown in FIGS. 5A and 6A. ) may be implemented, and may be implemented to have a listener key correction system 100 having the same structure as in FIG. 3A as shown in FIGS. 5B and 6B.

First, the speaker unit 200 includes two speakers consisting of a first speaker 210 and a second speaker 220 having the same size and performance. The first speaker 210 and the second speaker 220 are A speaker of a known structure installed in a standard soundproof booth with a width of 2m and a generally large and heavy structure. The first speaker 210 and the second speaker 220 may be installed such that the height from the ground to the center of the front of the speaker is maintained at 1.2 m to meet the standards required by the ISO8253-2 standard. If necessary, the speaker unit 200 may further include a rear speaker located at the rear of the listener key correction system 100 for performing a hearing test under noise.

The first speaker 210 and the second speaker 220 included in the speaker unit 200 are arranged on a straight line at a predetermined distance, and a straight line connecting the first speaker 210 and the second speaker 220 is drawn. The listener key correction system 100 is disposed at the vertex position of the isosceles triangle as the base. In particular, the rear center of the head reference unit 130 of the listener key correction system 100 may be arranged to form a vertex.

As an embodiment, the sound field inspection system 1 of the present invention is arranged such that two speakers are arranged in a straight line at a position spaced a predetermined distance toward the front side where the listener sits and looks at the listener key correction system 100 as the center. The first speaker 210 and the second speaker 220 are arranged so that the ruler height correction system 100 forms a vertex angle to form an isosceles triangle. In particular, the base of the isosceles triangle is the first speaker 210 and the second A straight line connecting the center of the front part of the speaker 220 and located on the same plane parallel to the ground, the front center of each of the first speaker 210 and the second speaker 220 and the center of the head reference part 130 Each of the connected straight lines may be arranged so as to be positioned on the same plane that is perpendicular to the front of each speaker and parallel to the ground. In particular, in an isosceles triangle with the center of the head reference unit 130 of the listener key correction system 100 and the center of the front portions of the first speaker 210 and the second speaker 220 as vertices, the angle of the base angle is 45 degrees. , and the vertex angle may be arranged to be a right angle.

In addition, the calibrator 300 is installed on the support member for calibrator installation installed on the front mounting member 132 of the head reference unit 130 of the listener key correction system 100, respectively, to reduce the sound emitted from the speaker. As a component to calibrate, it includes two calibrators, and a calibrator of a known configuration may be used.

The distance check unit 400 is a component for maintaining a constant distance between the front surface of each of the first speaker 210 and the second speaker 220 and the head reference unit 130, and the length of the equilateral sides of the above-mentioned isosceles triangle. As long as it can confirm that it maintains 1 m required by the ISO8253-2 standard, all known configurations for distance confirmation can be adopted, and a laser range finder may be used as an embodiment. In particular, when a laser range finder is used as the distance check unit 400, the front of the first speaker 210 and the second speaker 220 with respect to the head reference unit 130 of the listener key correction system 100 is the correct angle. It's very easy to check if it's done. That is, when the laser range finder operates in a state in which the head reference unit 130 is installed, and the emitted light is accurately inserted into the front center of the first speaker 210 and the second speaker 220, the speaker unit 200 opens to the listener. This is because it can be confirmed that the key correction system 100 is positioned at an accurate angle.

As an embodiment, when the distance check unit 400 is installed on the head reference unit 130 as a laser distance meter to check the distance and angle of the first speaker 210 and the second speaker 220 The listener height correction system 100 is implemented so that the distance from the ground where the speaker unit 200 is installed to the upper end of the head reference unit 130 is 1.2 m, and the height of the chair 140 is the head reference unit when the listener sits. The height may be adjusted so that the center of the listener's ear is located at the upper end of 130 .

Next, the standard soundproofing booth of the present invention is installed with a sound field inspection system including a listener key correction system having any one of the configurations described above, and the horizontal and vertical length required for the installation of the sound field inspection system is 1.5m or more. Since the soundproof booths installed in most large hospitals currently have a width and length of 2m, there is no need to newly install the standard soundproofing booth of the present invention, and the listener key correction system of the present invention in the already installed soundproof booth. It is possible to provide a standard soundproofing booth capable of accurate sound field inspection by implementing the sound field inspection system of the present invention only by installing a sound field inspection system that satisfies the standards required by the ISO8253-2 standard. If necessary, it is of course that the standard soundproof booth of the present invention can be implemented in a prefabricated manner to facilitate movement.

Therefore, if the listener's key correction system of the present invention and the sound field inspection system including the system are used, not only can the existing soundproof booth be recycled, but also the sound field inspection can be performed in an open place other than the soundproof booth according to the ISO8253-2 standard. It can be performed accurately and conveniently according to the required level, so when it is installed in otolaryngology hospitals, hearing aid shops, as well as other language and hearing related educational institutions, it is possible to determine whether the hearing aids of the hearing aid patients are working well, Hearing aids can be tested for maximum effectiveness.

Although the present invention has been illustrated and described with reference to preferred embodiments as described above, it is not limited to the above-described embodiments, and those of ordinary skill in the art to which the present invention pertains within the scope not departing from the spirit of the present invention Various changes and modifications will be possible.

1: sound field inspection system 100: listener key correction system
110: substrate part 120: vertical length part
130: head reference 131: curved member
131a: curved space 132: front mounting member
133: Calibrator installation support member 134: upper surface mounting member
135: support member 136: connection support member
140: chair
200: speaker unit 210: first speaker
220: second speaker 300; calibrator
400: distance check unit

Claims (16)

a flat substrate portion disposed on the bottom surface;
a vertical length portion having a length equal to or longer than the distance between the center of the sound field inspection speaker and the ground, and formed in the z-axis direction perpendicular to the substrate portion on the rear surface of the substrate portion;
a head reference part installed on the upper end or upper front surface of the vertical length part; and
a chair disposed on the substrate and having a structure in which the height can be adjusted according to the sitting height of the listener; includes, wherein the head reference part
a curved surface member having a curved space in which the listener's head can be located, and a portion constituting the center of the curved space is installed at a position coincident with the center of the upper end or upper front surface of the vertical length part;
Front support members formed on both front sides of the curved member;
a calibrator installation support member detachably installed in the y-axis direction on the front mounting member; and
Including; is formed on the curved member, the upper surface mounting member is installed two distance check parts,
The upper surface mounting member has two straight lines connected to the center of the front part of the two sound field inspection speakers that are disposed separately from the listener key correction system to face each other in a state where the two distance check parts are installed, respectively, to form a right angle when they meet Listener key correction system, characterized in that formed.
delete a flat substrate portion disposed on the bottom surface;
a vertical length portion having a length equal to or longer than the distance between the center of the sound field inspection speaker and the ground, and formed in the z-axis direction perpendicular to the substrate portion on the rear surface of the substrate portion;
a head reference part installed on the upper end or upper front surface of the vertical length part; and
a chair disposed on the substrate and having a structure in which the height can be adjusted according to the sitting height of the listener; includes, wherein the head reference part
a support member installed in the x-axis direction on the upper end or upper part of the vertical length part;
a connecting support member installed in the y-axis direction vertically from the front center of the support member;
a curved surface member having a curved space in which the listener's head can be located, the rear surface of the central portion of the curved space and the front surface of the connection support member being coupled to each other to be installed;
Front support members formed on both front sides of the support member;
a calibrator installation support member detachably installed in the y-axis direction on the front mounting member; and
and an upper surface mounting member formed on the support member and having two distance checking units installed therein;
The upper surface mounting member has two straight lines connected to the center of the front part of the two sound field inspection speakers that are disposed separately from the listener key correction system to face each other in a state where the two distance check parts are installed, respectively, to form a right angle when they meet Listener key correction system, characterized in that formed.
delete delete 4. The method of claim 1 or 3,
The chair is a listener key correction system, characterized in that when the listener sits, the listener's head is fixed to the base unit so that the head is located in the reference portion to be detachably fixed.
7. The method of claim 6,
The height of the chair is adjusted so that the center of the listener's ear is located on the head reference part when the listener sits.
4. The method of claim 1 or 3,
The listener key correction system, characterized in that the support member for installing the calibrator is removed together with the calibrator after correction for the sound emitted from the speaker is finished.
4. The method of claim 1 or 3,
The substrate part is a chair arrangement formed in a plane or three-dimensional shape on the surface area where the chair is placed so that the head of the listener is positioned on the head reference part when the listener adjusts the height while sitting on the chair in consideration of the position of the vertical part Listener key correction system, characterized in that it further comprises a recognition member for.
a speaker unit including two speakers arranged in a straight line at a predetermined distance;
The listener key correction system of claim 1 or 3, which is disposed at a vertex position of an isosceles triangle having a straight line connecting the two speakers as a base; and
Includes; two calibrators installed in the head reference unit of the listener key correction system;
The base of the isosceles triangle is a straight line connecting the centers of the front surfaces of the two speakers and is located on the same plane parallel to the ground, and each straight line connecting the centers of the front surfaces of the two speakers and the center of the head reference part is the The two speakers are arranged so as to be positioned on the same plane perpendicular to the front of each speaker and parallel to the ground,
The sound field inspection system, characterized in that the two speakers and the listener key correction system are arranged so that the angle of the base angle is 45 degrees in the isosceles triangle and the angle of the apex is a right angle.
delete delete 11. The method of claim 10,
The sound field inspection system, characterized in that it further comprises a distance check unit for maintaining a constant distance between the speaker front portion and the head reference unit.
14. The method of claim 13,
The sound field inspection system, characterized in that the distance check unit is a laser distance meter.
11. The method of claim 10,
The height of the listener height correction system is 1.2 m, and the equilateral side of the isosceles triangle is 1 m.
A standard soundproofing booth including the sound field inspection system of claim 10.

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