Overhead sound focusing device for open learning spaces to improve language clarity

Abstract

The utility model discloses a top suspension type sound focusing device for open learning space language clarity promotion, including rectangular frame base, rectangular frame base outside encloses and installs the side panel, and the side panel is inclined to set up, the middle part of rectangular frame base is provided with the baffle, and the baffle is arc, the side of this baffle is connected with the inner wall of the middle part cavity of rectangular frame base, forms the roof effect, is provided with the suspender on the rectangular frame base. Through suspender, top suspension type sound focusing device is hoisted on the roof, and the group crowd is below the area of this top suspension type sound focusing device, when the group crowd sounds, the sound energy that spreads upward is reflected through arc baffle and each side panel, and most sound energy is focused and is reflected back to the area where the group is, improves the language clarity when the inside exchange of group, simultaneously, because the range of sound energy propagation is controlled, makes the irrelevant speech interference of this position that the surrounding other people receive reduces.

Description

Technical Field

[0001] This utility model relates to the field of architectural acoustic construction technology, specifically to a ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces. Background Technology

[0002] Sound focusing is the technique of concentrating sound energy within a specific area. It is typically used in buildings with large interior spaces to reduce background noise and sound interference caused by reverberation time. In open learning spaces, when teaching in groups, teachers and students often deliberately raise their voices because they cannot hear each other clearly. This not only exacerbates sound interference between groups but also negatively impacts the teacher's vocal health and the students' emotions due to prolonged loud conversations.

[0003] Currently, in spaces such as open classrooms and library discussion areas where multiple groups need to communicate simultaneously, teachers and students in one group will inevitably be disturbed by irrelevant speech from other groups when discussing or lecturing. This not only reduces students' learning efficiency because they cannot hear the teacher or classmates clearly, but also causes them to become distracted and irritable due to prolonged exposure to noise. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a ceiling-mounted sound focusing device for improving speech clarity in open learning spaces. This addresses the problem of irrelevant speech interference during group teaching in open learning spaces, as described above.

[0005] This utility model is achieved through the following technical solution:

[0006] A ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces includes a rectangular frame base, with side panels installed around the outer side of the rectangular frame base, and the side panels are inclined.

[0007] A cover plate is installed in the middle of the rectangular frame foundation. The cover plate is arc-shaped and its side is connected to the inner wall of the central cavity of the rectangular frame foundation to form a top cover.

[0008] Hanging rods are installed on the rectangular frame base to suspend the ceiling-mounted sound focusing device on the roof.

[0009] In the above technical solution, the cover plate is made of transparent material, which can effectively ensure the lighting effect of the lower area of ​​the ceiling-mounted sound focusing device.

[0010] In the above technical solution, the preferred number of hangers is four, which are respectively arranged at the four apex positions of the rectangular frame foundation.

[0011] In the above technical solution, the side panel includes a left side panel, a right side panel, a front side panel, and a rear side panel, which are respectively installed on the four sides of the rectangular frame foundation. The adjacent sides of the left side panel, the right side panel, the front side panel, and the rear side panel are connected by connecting strips to form an enclosed structure.

[0012] In the above technical solution, the tilt angle of the side panel is preferably 30-50 degrees.

[0013] In the above technical solution, the rectangular frame base includes a first horizontal rectangular frame, a second horizontal rectangular frame, and a third horizontal rectangular frame arranged sequentially from top to bottom. The first horizontal rectangular frame and the second horizontal rectangular frame are connected by a first vertical rectangular frame, and the second horizontal rectangular frame and the third horizontal rectangular frame are connected by a second vertical rectangular frame.

[0014] In the above technical solution, the suspension rod is vertically and fixedly installed on the first horizontal rectangular frame, the second horizontal rectangular frame, and the third horizontal rectangular frame.

[0015] In the above technical solution, a connecting ear is provided on the inner side of the side panel, and the side panel is fixedly connected to the first horizontal rectangular frame and the second horizontal rectangular frame of the rectangular frame base through the connecting ear.

[0016] In the above technical solution, the cover plate is fixedly installed on the third transverse rectangular frame.

[0017] In the above technical solution, the outer diameter of the second horizontal rectangular frame is larger than the outer diameter of the first horizontal rectangular frame, so that the side panel is tilted after being installed on the first and second horizontal rectangular frames.

[0018] The advantages and beneficial effects of this utility model are as follows:

[0019] This utility model's ceiling-mounted sound focusing device optimizes the listening experience among teachers and students in a teaching group, improves teaching and learning efficiency, improves the indoor sound environment to a certain extent, further reduces sound interference between groups, and has a simple structure with low space occupancy, while also serving a certain decorative purpose. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of the ceiling-mounted sound focusing device provided by this utility model.

[0021] Figure 2 An exploded view of the structure of the ceiling-mounted sound focusing device provided by this utility model.

[0022] Figure 3 This is a cross-sectional structural diagram of a ceiling-mounted sound focusing device provided by this utility model.

[0023] Figure 4 This is a schematic diagram of an open teaching space model.

[0024] Figure 5 This is a graph showing the background noise setting (45.1 dB(A)) of the Odeon acoustic simulation software.

[0025] Figure 6 This is the sound source setting (59.5) diagram from the Odeon acoustic simulation software. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0027] Example 1

[0028] This invention provides a ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces. (See attached diagram) Figure 1 The system includes a rectangular frame base 1, and side panels 2 are installed around the outer side of the rectangular frame base 1. Specifically, the side panels 2 include a left side panel, a right side panel, a front side panel, and a rear side panel, which are respectively installed on the four sides of the rectangular frame base 1. The adjacent sides of the left side panel, right side panel, front side panel, and rear side panel are connected by connecting strips 3 to form an enclosed structure. The side panels 2 are inclined, and the preferred inclination angle is 30-50 degrees (the inclination angle here refers to the angle between the side panel and the horizontal direction).

[0029] A cover plate 4 is provided in the middle of the rectangular frame foundation 1. The side of the cover plate 4 is connected to the inner wall of the central cavity of the rectangular frame foundation 1, thus forming a top cover. Preferably, the cover plate 4 is arc-shaped, which helps the sound to be reflected evenly downwards and outwards. Combined with the function of the enclosing side panel 2, it forms a sound-focusing effect on the lower area of ​​the ceiling-mounted sound focusing device. More preferably, the cover plate 4 is made of a transparent material, such as transparent acrylic, which can effectively ensure the lighting effect of the lower area of ​​the ceiling-mounted sound focusing device.

[0030] Hanging rods 5 are installed on the rectangular frame foundation 1 for suspending the top-mounted sound focusing device of this utility model on the roof. Preferably, there are four hanging rods 5, which are respectively arranged at the four top corners of the rectangular frame foundation 1.

[0031] In practical applications, lighting can be installed on the upper part of the ceiling-mounted sound focusing device in this embodiment to ensure sufficient illumination in the lower area of ​​the device.

[0032] The working principle and usage method of this utility model are as follows: The ceiling-mounted sound focusing device of this utility model is suspended on the roof by the suspension rod 5. Preferably, the ceiling-mounted sound focusing device is 2.5 meters above the ground. When a group of people (such as teachers or students) speaks in the area below the ceiling-mounted sound focusing device, the sound energy that propagates upward is focused and reflected back to the area where the group is located by the reflection of the arc-shaped cover plate 4 and each side panel 2, thereby improving the clarity of speech when communicating within the group. At the same time, since the range of sound energy propagation is controlled, the irrelevant speech interference from other teaching groups at this location is reduced.

[0033] Example 2

[0034] Based on Embodiment 1, this embodiment provides a preferred embodiment of the rectangular frame foundation 1 of the ceiling-mounted sound focusing device, as detailed below:

[0035] See appendix Figure 2 and attached Figure 3 The rectangular frame base 1 includes a first horizontal rectangular frame 11, a second horizontal rectangular frame 12 and a third horizontal rectangular frame 13 arranged sequentially from top to bottom. The first horizontal rectangular frame 11 and the second horizontal rectangular frame 12 are connected by a first vertical rectangular frame 14, and the second horizontal rectangular frame 12 and the third horizontal rectangular frame 13 are connected by a second vertical rectangular frame 15.

[0036] The hanging rod 5 is vertically and fixedly installed on the first horizontal rectangular frame 11, the second horizontal rectangular frame 12, and the third horizontal rectangular frame 13.

[0037] A connecting lug 21 is provided on the inner side of the side panel 2, through which the side panel 2 is fixedly connected to the first horizontal rectangular frame 11 and the second horizontal rectangular frame 12 of the rectangular frame base 1. The cover plate 4 is fixedly installed on the third horizontal rectangular frame 13.

[0038] Furthermore, the outer diameter of the second horizontal rectangular frame 12 is larger than the outer diameter of the first horizontal rectangular frame 11, so that the side panel 2 is tilted after being installed on the first horizontal rectangular frame 11 and the second horizontal rectangular frame 12.

[0039] This utility model patent aims to address the technical challenge of insufficient Speech Intelligibility (STI) during group teaching and discussions in open, large indoor spaces, leading to low teaching and communication efficiency. To objectively verify the effectiveness of this utility model, we used the professional acoustic simulation software Odeon, with an open teaching space model (see attached...) Figure 4This serves as a typical real-world case study. During detailed modeling, the geometric dimensions, boundary conditions, and material properties (such as common teaching space interfaces like PVC flooring and mineral wool ceilings) of the space were accurately imported. The high background noise level measured on-site (45.1 dB(A), see appendix) was also incorporated. Figure 5 The noise was primarily generated by other teaching groups and the ventilation system located at a distance. The sound source was selected based on the octave band sound pressure level and A-weighted sound pressure level (59.5 dB(A)) at a distance of 1 m from the speaker in a free field, according to ISO 3382-3. (See Appendix) Figure 6 The simulation was designed to simulate the normal volume of a teacher's explanation or a student's speech in a real-world setting. The simulation results confirmed that, under the original acoustic conditions without intervention, the STI (Speech Intelligibility Index) of the target teaching group area was only 0.33, indicating poor speech intelligibility.

[0040] Subsequently, we installed the ceiling-mounted sound focusing device, designed according to this invention, above the group study table. The core value of the Odeon simulation lies in its precise calculation of the device's near-field control and directional reflection effects on sound energy propagation. Simulation results show that after the device was installed, the average STI of the three sound sources and receivers immediately and significantly improved, reaching a level of 0.58. This confirms that the ceiling-mounted sound focusing device is an effective and precise acoustic solution to the technical problem of "insufficient intelligibility of teaching language within a small group" in complex, large-space sound fields, ensuring efficient and clear teaching and collaborative communication in open teaching spaces without increasing the volume of teachers' and students' voices.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces, characterized in that: It includes a rectangular frame foundation, and side panels are installed around the outside of the rectangular frame foundation. The side panels are set at an angle. A cover plate with an arc shape is installed in the middle of the rectangular frame foundation. The side of the cover plate is connected to the inner wall of the cavity in the middle of the rectangular frame foundation to form a top cover. Hangers are installed on the rectangular frame foundation.

2. The ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces according to claim 1, characterized in that: The cover plate is made of transparent material.

3. The ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces according to claim 1, characterized in that: There are four hangers, which are respectively placed at the four top corners of the rectangular frame foundation.

4. The ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces according to claim 1, characterized in that: The side panels include a left side panel, a right side panel, a front side panel, and a rear side panel, which are installed on the four sides of the rectangular frame foundation. The adjacent sides of the left side panel, right side panel, front side panel, and rear side panel are connected by connecting strips to form an enclosed structure.

5. The ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces according to claim 1, characterized in that: The side panel is tilted at an angle of 30-50 degrees.

6. The ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces according to claim 1, characterized in that: The rectangular frame base includes a first horizontal rectangular frame, a second horizontal rectangular frame, and a third horizontal rectangular frame arranged sequentially from top to bottom. The first horizontal rectangular frame and the second horizontal rectangular frame are connected by a first vertical rectangular frame, and the second horizontal rectangular frame and the third horizontal rectangular frame are connected by a second vertical rectangular frame.

7. The ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces according to claim 6, characterized in that: The boom is vertically and fixedly installed on the first horizontal rectangular frame, the second horizontal rectangular frame, and the third horizontal rectangular frame.

8. The ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces according to claim 6, characterized in that: Connecting ears are provided on the inner side of the side panel, and the side panel is fixedly connected to the first and second horizontal rectangular frames of the rectangular frame base through the connecting ears.

9. The ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces according to claim 6, characterized in that: The cover plate is fixedly installed on the third horizontal rectangular frame.

10. The ceiling-mounted sound focusing device for improving speech intelligibility in open learning spaces according to claim 6, characterized in that: The outer diameter of the second horizontal rectangular frame is larger than that of the first horizontal rectangular frame. After the side panel is installed on the first and second horizontal rectangular frames, it forms an inclined state.

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