A secondary sound diffusion device for white noise
By designing a secondary sound diffusion device for white noise in the audio device, and using the primary diffusion cone and the secondary diffusion blades to perform two non-directional diffusions, the shortcomings of the existing audio devices in terms of sound uniform distribution and sound quality purity are solved, and a more stable and relaxed listening feeling and a higher sound quality level are achieved.
Patent Information
- Application Number
- CN202421416548.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-20
AI Technical Summary
Existing audio devices have shortcomings in sound diffusion, which is difficult to meet the needs of modern acoustic environments for uniform sound distribution and sound quality purity.
A secondary sound diffusion device for white noise is designed, including an upper cover, a lower cover, a restraint ring and a secondary diffusion blade. The sound first contacts the primary diffusion cone, after diffusion without direction, then contacts the secondary diffusion blades, and performs a second non-directional diffusion.
Through two diffusions, the sound sense becomes more stable and relaxed, improving the sound quality level of the speaker.
Smart Images
Figure CN222736303U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sound, in particular to a secondary sound diffusion device for white noise. Background Art
[0002] In order to improve the sound quality of the speakers, a reflection diffusion area is usually designed in the structure of existing speakers. That is, after the sound waves of white noise pass through this reflection diffusion area, they will diffuse outward without directionality. That is to say, when the sound encounters an uneven surface, it will diffuse in all directions. In this way, the sound loses its clear directionality, making the listening experience of white noise more stable and relaxing.
[0003] In the structure of existing speakers, the above-mentioned reflection diffusion area is generally concentrated on the speaker's bell mouth, that is to say, traditional speakers generally have the function of primary sound diffusion. The traditional primary sound diffusion device can no longer meet the modern acoustic environment's requirements for uniform sound distribution and sound quality purity. For this reason, we propose a secondary sound diffusion device for white noise. Utility Model Content
[0004] In view of the deficiencies of the prior art, the utility model provides a secondary sound diffusion device for white noise, which solves the problems raised by the above-mentioned background technology.
[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: a secondary sound diffusion device for white noise, comprising:
[0006] An upper cover, wherein the outer end surface of the upper cover is provided with a sinking groove, and the inner end surface is provided with a primary diffusion cone;
[0007] The secondary diffusion blades are arc-shaped structures, and there are several of them. The secondary diffusion blades are distributed in a ring shape and connected to the edge of the inner end surface of the upper cover. A sound gap is reserved between each secondary diffusion blade, and the distance of each sound gap is equal.
[0008] Furthermore, the sinking groove is a stepped structure with the edge gradually recessed toward the center.
[0009] Furthermore, the side surface of the primary diffusion cone is set as an arc slope, and the arc slope is a smooth surface, and the protruding direction of the primary diffusion cone is toward the direction of sound input.
[0010] Furthermore, a plurality of connection columns are connected to the edge of the inner end surface of the sinking trough, and the plurality of connection columns are distributed in a staggered manner with a plurality of secondary diffusion blades, and a threaded hole is reserved at one end of each connection column away from the upper cover.
[0011] Furthermore, the ends of the connecting column are commonly connected to the lower cover, and a screw hole is reserved inside the lower cover. By screwing a screw into the screw hole and connecting the screw to the threaded hole, the connecting column is connected and fixed to the lower cover.
[0012] Furthermore, a restraining ring is embedded in the end surface of the lower cover facing the connecting column, and a through hole is reserved inside the restraining ring, and the connecting column passes through the through hole.
[0013] Furthermore, the two ends of the secondary diffusion blade are respectively connected to a first plug-in and a second plug-in, the inner end surface of the upper cover is reserved with a plurality of first plug-ins, and the edge of the constraint ring is reserved with a plurality of second plug-ins, the first plug-in is inserted in the first plug-in, and the second plug-in is inserted in the second plug-in.
[0014] The utility model provides a secondary sound diffusion device for white noise. Compared with the prior art, it has the following beneficial effects:
[0015] The white noise diffusion device is provided with a primary diffusion cone and a plurality of secondary diffusion blades. After the sound is transmitted into the device, the sound wave will first contact the primary diffusion cone, and after the non-directional diffusion reflection of the primary diffusion cone, it will contact the secondary diffusion blades and perform a second non-directional diffusion reflection. After the secondary diffusion, the sound will feel more stable and relaxed, thereby improving the sound quality level of the audio. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the disassembly of the utility model;
[0017] Figure 2 It is a schematic diagram of the assembly of the utility model;
[0018] Figure 3 It is a structural schematic diagram of the upper cover in the utility model;
[0019] Figure 4 It is a structural schematic diagram of the restraining ring in the utility model;
[0020] Figure 5 It is a structural schematic diagram of the secondary diffusion blade in the utility model;
[0021] Figure 6 It is a schematic diagram of the propagation path of sound after entering the utility model.
[0022] In the figure: 1, upper cover; 11, sinking groove; 12, primary diffusion cone; 13, connecting column; 14, threaded hole; 15, first plug hole; 2, lower cover; 21, screw hole; 3, restraining ring; 31, second plug hole; 32, through hole; 4, secondary diffusion blade; 41, first plug piece; 42, second plug piece. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-5 The utility model provides a technical solution: a secondary sound diffusion device for white noise, mainly composed of an upper cover 1, a lower cover 2, a restraining ring 3 and a secondary diffusion blade 4, wherein a plurality of connecting columns 13 are fixedly connected to the inner edge of the upper cover 1, and the ends of the plurality of connecting columns 13 are connected to the lower cover 2 together, and a threaded hole 14 is provided at the end of each connecting column 13, and a screw hole 21 is provided at a position corresponding to the connecting column 13 in the lower cover 2. When the connecting column 13 is connected to the lower cover 2, the threaded hole 14 of the connecting column 13 is aligned with the screw hole 21, and then a screw (the screw is not shown in the figure) is screwed into the screw hole 21;
[0025] In order to facilitate the connection of several secondary diffusion blades 4, several first plug holes 15 are opened on the inner edge of the upper cover 1, and several connecting columns 13 are evenly distributed between the several first plug holes 15, and the inner end surface of the lower cover 2 is embedded with a constraint ring 3, and a through hole 32 is reserved inside the constraint ring 3. The connecting column 13 will pass through the through hole 32 when connected to the lower cover 2. The edge of the constraint ring 3 also opens a second plug hole 31, and the two ends of the secondary diffusion blade 4 are respectively connected to the first plug piece 41 and the second plug piece 42 in one piece. When connecting the secondary diffusion blade 4, the first plug piece 41 is inserted into the first plug hole 15, and the second plug piece 42 is inserted into the second plug hole 31;
[0026] The above description is biased towards how to assemble the parts of the diffusion device, and the following description is that the device has the function of secondary sound diffusion, specifically:
[0027] A sinking groove 11 is pre-opened on the outer end surface of the upper cover 1. The sinking groove 11 adopts a stepped structure with the edge gradually concave toward the center. When the sound is transmitted to the primary diffusion cone 12, it is not only reflected, but also partially absorbed. When the absorbed sound acts on the sinking groove 11, the sound diffuses in all directions without direction. The middle part of the inner end surface of the upper cover 1 is integrally connected to the primary diffusion cone 12. The side surface of the primary diffusion cone 12 is set as an arc slope, and the arc slope is a smooth surface. The protruding direction of the primary diffusion cone 12 is toward the direction of sound input. When the sound wave is input and acts on When the surface of the primary diffusion cone 12 is a circular arc inclined surface and a smooth surface, the sound will diffuse non-directionally with low loss. The above belongs to the first diffusion of the sound, and a plurality of secondary diffusion blades 4 are provided, each of which is an arc-shaped structure, that is, the secondary diffusion blade 4 also has the non-directional diffusion characteristics of the arc surface, and there is a gap between two adjacent secondary diffusion blades 4 for the sound waves to be transmitted, and all the gaps are equal. After the secondary diffusion, the sound will be transmitted from the gap, which belongs to the second diffusion of the sound. For the specific diffusion path of the sound wave, please refer to the attached Figure 6 ;
[0028] After the above-mentioned two diffusions of sound, the listening experience will become more stable and relaxed, improving the sound quality of the audio system.
Claims
1. A secondary sound diffusion device for white noise, characterized in that: include: An upper cover (1), wherein the outer end surface of the upper cover (1) is provided with a sinking groove (11), and the inner end surface is provided with a primary diffusion cone (12); The secondary diffusion blades (4) are of an arc-shaped structure, and a plurality of the secondary diffusion blades (4) are provided in total. The plurality of secondary diffusion blades (4) are distributed in an annular manner and connected to the edge of the inner end surface of the upper cover (1). A sound outlet gap is reserved between each of the secondary diffusion blades (4), and the distance of each sound outlet gap is equal.
2. A secondary sound diffusion device for white noise according to claim 1, characterized in that: The sinking groove (11) is a stepped structure with the edge gradually recessed toward the center.
3. A secondary sound diffusion device for white noise according to claim 1, characterized in that: The side surface of the primary diffusion cone (12) is arranged as an arc slope, and the arc slope is a smooth surface, and the protruding direction of the primary diffusion cone (12) is towards the direction of sound input.
4. A secondary sound diffusion device for white noise according to claim 1, characterized in that: The edge of the inner end surface of the sinking groove (11) is also connected to a plurality of connecting columns (13), and the plurality of connecting columns (13) and the plurality of secondary diffusion blades (4) are distributed in a staggered manner, and a threaded hole (14) is reserved at one end of each connecting column (13) facing away from the upper cover (1).
5. A secondary sound diffusion device for white noise according to claim 4, characterized in that: The ends of the connecting column (13) are connected to the lower cover (2), and a screw hole (21) is reserved inside the lower cover (2). A screw is screwed into the screw hole (21), and after the screw is connected to the threaded hole (14), the connecting column (13) is connected and fixed to the lower cover (2).
6. A secondary sound diffusion device for white noise according to claim 5, characterized in that: A restraining ring (3) is embedded in the end surface of the lower cover (2) facing the connecting column (13), a through hole (32) is reserved inside the restraining ring (3), and the connecting column (13) passes through the through hole (32).
7. A secondary sound diffusion device for white noise according to claim 6, characterized in that: The two ends of the secondary diffusion blade (4) are respectively connected to a first plug-in sheet (41) and a second plug-in sheet (42); a plurality of first plug-in holes (15) are reserved on the inner end surface of the upper cover (1); a plurality of second plug-in holes (31) are reserved on the edge of the restraining ring (3); the first plug-in sheet (41) is inserted into the first plug-in hole (15); and the second plug-in sheet (42) is inserted into the second plug-in hole (31).