A standing wave elimination device, a speaker and a speaker modification method

Abstract

The present invention relates to a standing wave elimination device, a sound box and a sound box modification method, comprising a transparent plate, which can be extruded and fixed on the hole surface of an opening arranged on a top plate of the sound box and covers the opening, the transparent plate is connected to a metal foil through at least one metal wire, a particle containing groove is arranged at the edge of the metal foil, and a plurality of sound-absorbing particles are placed on the metal foil. The present invention can effectively eliminate standing waves, improve the sound quality of the sound box, and is interesting and entertaining.

Description

Technical Field

[0001] The present invention relates to the technical field of audio equipment, and in particular to a standing wave elimination device, a sound box and a sound box modification method. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Standing waves refer to a distribution state formed along a transmission line by two waves (not necessarily radio waves) with the same frequency and opposite transmission directions. One of the waves is generally a reflection of the other wave. Antinodes appear at the point where the voltages (or currents) of the two waves are added, and nodes are formed at the point where the voltages (or currents) of the two waves are subtracted. On the waveform, the positions of nodes and antinodes are always constant, giving the impression of "standing still", but its instantaneous value changes with time. If the amplitudes of the two waves are equal, the amplitude of the nodes is zero. For example, the standing waves on string instruments will be reflected when the sound waves propagate to the fixed end. The reflected waves propagate in the opposite direction to the incident waves, and have the same amplitude and frequency. Therefore, the superposition of the incident wave and the reflected wave forms a standing wave. The standing waves in wind instruments will also be reflected when the sound waves propagate to the closed end. The superposition of the incident wave and the reflected wave forms a standing wave.

[0004] The inventors found that standing waves can greatly affect the sound quality of the speaker. The so-called "clean and powerful bass" is in contrast to the "muddy" listening experience, and the main reason for the "muddy" bass is the standing wave interference.

[0005] As for speakers alone, in addition to having a pair of good woofers, methods to eliminate standing waves in the box include reasonably designing the box size (the geometric size cannot be an integer multiple), adding sound-absorbing materials, using concave and convex structures in the box to weaken mirror reflections, using a box structure with non-parallel surfaces, and reasonable bass reflex tube hole or resonance cavity design, etc. However, except for adding sound-absorbing materials, the rest of the above measures are finalized from the beginning of speaker design and manufacturing. Once standing wave interference occurs during later use, it is inconvenient to carry out modifications. Therefore, the development of efficient, feasible and simple modification devices and methods to eliminate standing waves and improve speaker sound quality has important theoretical significance and practical application value. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a standing wave elimination device that can effectively absorb the standing waves generated during the operation of the speaker, thereby improving the sound quality of the speaker and also improving the practicality and interest of the speaker.

[0007] To achieve the above object, the present invention adopts the following technical solution:

[0008] In the first aspect, an embodiment of the present invention provides a standing wave elimination device, comprising a transparent plate, which can be extruded and fixed on the hole surface of an opening set on the top plate of a sound box and covers the opening, wherein the transparent plate is connected to a metal foil by at least one silk thread, a particle receiving groove is set at the edge of the metal foil, and a plurality of sound-absorbing particles are placed on the metal foil.

[0009] Furthermore, a silicone edge sleeve is fixed to the edge of the transparent plate, and the transparent plate can be squeezed and fixed on the hole surface of the opening set on the top plate of the sound box through the silicone edge sleeve.

[0010] In the second aspect, an embodiment of the present invention provides a standing wave elimination device, comprising a transparent plate, which can be fixed on the upper surface of a speaker top plate and covers an opening set in the speaker top plate, wherein the transparent plate is connected to a metal foil by at least one silk thread, a particle receiving groove is set at the edge of the metal foil, and a plurality of sound-absorbing particles are placed on the metal foil.

[0011] Furthermore, a mounting hole is provided at the edge of the transparent plate, and the transparent plate can be detachably fixedly connected to the top plate of the sound box through the mounting hole and the fixing piece.

[0012] Furthermore, the transparent plate is made of a tempered glass plate or an acrylic plate.

[0013] Furthermore, the metal foil is aluminum foil or copper foil.

[0014] Furthermore, the silk thread is made of gold thread, silver thread, copper thread or cotton thread.

[0015] Furthermore, the sound-absorbing particles are resin microspheres, wood wool microspheres, or sound-absorbing cotton microspheres.

[0016] In a third aspect, an embodiment of the present invention provides a speaker, including a speaker body, a top plate of the speaker body is provided with an opening, and the standing wave elimination device described in the first aspect or the second aspect is installed at the position of the opening of the top plate.

[0017] In a fourth aspect, an embodiment of the present invention provides a method for modifying a speaker, wherein a transparent plate is connected to one end of a metal wire, a metal foil is fixed to the other end of the metal wire, an opening is opened on the top plate of the speaker, a plurality of attracting particles are placed on the metal foil, and then the transparent plate is fixed to the top plate of the speaker so that the transparent plate covers the opening.

[0018] Beneficial effects of the present invention:

[0019] 1. The standing wave elimination device of the present invention has a simple structure and is easy to install. It has metal foil and sound-absorbing particles. It can effectively eliminate the standing waves of the bass speaker by using the metal foil and sound-absorbing particles. Compared with the existing modification method of filling sound-absorbing cotton and other materials, it has a more obvious standing wave absorption effect and improves the sound quality of the speaker.

[0020] 2. In the standing wave elimination device of the present invention, the sound-absorbing particles can vibrate and displace under the action of standing waves to form different patterns, thereby realizing the graphic visualization of different audio standing waves, and transforming harmful audio standing waves into ornamental variable graphics, thereby improving the practicality and interest of the speaker during use, and making the modified speaker ornamental and entertaining.

[0021] 3. The standing wave elimination device of the present invention uses metal wires, tempered glass plates or acrylic plates, and metal foils. The raw material price is low, the transformation cost is low, and it is environmentally friendly. The standing waves of the bass speaker after the structural transformation are significantly eliminated, and industrialization can be realized.

[0022] 4. The transformation method of the present invention only requires modification of the top plate of the speaker, which is applicable to both the structural design of new speakers and the structural transformation of finished speakers, and has an obvious effect of eliminating bass standing waves for both new speakers and finished speakers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0025] Figure 2 The overall structure of Example 2 of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 3 The overall structure of Example 2 of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 4 The overall structure of Example 2 of the present invention is shown in FIG. Figure 3 ;

[0028] Figure 5 This is a schematic diagram of the structure of a speaker box using the standing wave elimination device of Example 1 in Example 3 of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of a speaker box using the standing wave elimination device of Example 2 in Example 3 of the present invention;

[0030] Among them, 1. tempered glass plate, 2. silicone edge cover, 3. gold wire, 4. glue connection point, 5. aluminum foil, 6. sound-absorbing particles, 7. particle storage slot, 8. acrylic plate, 9. mounting hole, 10. rivet, 11. copper wire, 12. copper foil, 13. speaker body, 14. top plate. DETAILED DESCRIPTION

[0031] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0034] As introduced in the background technology, standing waves will greatly affect the sound quality of the speaker. To address the above problem, the present application proposes a standing wave elimination device.

[0035] In a typical implementation of the present application, Figure 1 As shown, a standing wave elimination device includes a transparent plate. In this embodiment, the transparent plate is a circular plate. It can be understood that the transparent plate can also be a rectangular plate, a triangular plate or a plate of other shapes. The transparent plate is a tempered glass plate 1, and a silicone edge sleeve 2 is installed on its outer edge. The overall size of the transparent plate and the silicone edge sleeve allows the transparent plate to be squeezed and fixed on the hole surface of the opening set on the top plate of the sound box through the silicone edge sleeve.

[0036] The bottom surface of the transparent plate is fixedly connected to one end of at least one silk thread, and the other end of the silk thread is fixedly connected to the metal foil. In the present embodiment, the silk thread is a gold silk thread 3. It can be understood that the silk thread can also be a silver silk thread, a copper silk thread or a cotton silk thread. Those skilled in the art can select according to actual needs. One gold silk thread is used, and one end of the gold silk thread is glued and fixed to the center of the transparent plate by a glue connection point 4, and the other end is glued and fixed to the center of the metal foil by a glue connection point.

[0037] In this embodiment, the metal foil is a circular aluminum foil 5, and a plurality of sound-absorbing particles 6 are distributed on the upper surface of the aluminum foil. In this embodiment, the sound-absorbing particles are resin microspheres or wood wool microspheres or sound-absorbing cotton balls. Sound-absorbing particles of different materials, diameters and colors can be placed on the aluminum foil.

[0038] The edge of the aluminum foil is provided with a particle receiving groove 7, into which the sound-absorbing particles can fall, thereby preventing the sound-absorbing particles from falling outside the aluminum foil.

[0039] The standing wave elimination device of this embodiment can effectively eliminate the standing waves of the subwoofer by using metal foil and sound-absorbing particles. Compared with the existing modification method of filling with sound-absorbing cotton and other materials, the standing wave absorption effect is more obvious, thereby improving the sound quality of the speaker. Moreover, the sound-absorbing particles can vibrate and displace under the action of standing waves to form different patterns, thereby realizing the graphic visualization of different audio standing waves, and transforming harmful audio standing waves into ornamental variable graphics, thereby improving the practicality and interest of the speaker during use, making the modified speaker ornamental and entertaining. In addition, the raw material price is low, the modification cost is low, and it is environmentally friendly. Moreover, the standing waves of the subwoofer after the structural modification are significantly eliminated, and industrialization can be realized.

[0040] Embodiment 2:

[0041] This embodiment discloses a standing wave elimination device, such as Figure 2 As shown, it includes a transparent plate, which is an acrylic plate 8. Mounting holes 9 are set at the four corners of the acrylic plate. The acrylic plate can be fixedly connected to the top plate of the speaker through the mounting holes and fixing bolts, and the acrylic plate covers the rectangular opening on the top plate of the speaker.

[0042] The central part of the acrylic plate is connected to one end of the wire by a rivet 10, and the other end of the wire is connected to the metal foil by a rivet.

[0043] In this embodiment, the wire is a copper wire 11, the metal foil is a rectangular copper foil 12, a plurality of sound-absorbing particles are placed on the upper surface of the copper foil, the sound-absorbing particles are resin microspheres or wood wool microspheres or sound-absorbing cotton balls, and sound-absorbing particles of different materials, diameters and colors can be placed on the aluminum foil.

[0044] The edge of the copper foil is provided with a particle receiving groove 7, into which the sound-absorbing particles can fall, thereby preventing the sound-absorbing particles from falling off the copper foil.

[0045] like Figure 3 As shown, in this embodiment, the acrylic plate can also be connected to the copper foil through three copper wires, and the three copper wires are distributed along a triangle, such as Figure 4 As shown, in another embodiment, the connection points of the three copper wires and the acrylic plate are located at the same point, and there are three connection points with the copper foil, and the three connection points are distributed in a triangle.

[0046] Three copper wires are used to enhance the connection strength between the acrylic plate and the copper foil.

[0047] Embodiment 3:

[0048] This embodiment discloses a speaker, including a speaker body 13, a top plate 14 of the speaker body is provided with an opening, and the standing wave elimination device described in Embodiment 1 or Embodiment 2 is installed at the opening. Figure 5 As shown, when the standing wave elimination device described in Example 1 is installed, the opening is a circular opening, such as Figure 6 As shown, when the standing wave elimination device described in Example 2 is installed, the opening is a rectangular opening. The other structures of the speaker body adopt the structure of the existing speaker, which will not be described in detail here.

[0049] Embodiment 4:

[0050] This embodiment discloses a method for modifying a speaker, which uses the standing wave elimination device described in Embodiment 1 to modify the speaker, including the following steps:

[0051] According to the size of the top plate of the speaker, a circular opening is opened on the top plate while retaining the edge, and the original sound-absorbing material on the inner wall of the top plate of the speaker is removed.

[0052] A silicone edge sleeve is installed on the outer peripheral surface of the tempered glass, so that its overall size is sufficient for the tempered glass to be inserted into the opening formed on the top plate of the speaker.

[0053] Processing a particle receiving groove at the edge of the circular aluminum foil;

[0054] The aluminum foil and the tempered glass are connected by a gold wire, and both ends of the gold wire are connected to the aluminum foil and the tempered glass by gluing.

[0055] The sound-absorbing particles are evenly spread on the aluminum foil, and the tempered glass is inserted into the opening set in the top plate of the speaker box, so that the tempered glass is squeezed and fixed on the hole surface of the opening through the silicone edge sleeve.

[0056] The transformation method of the present invention only requires modification of the top plate of the speaker, and is applicable to both the structural design of new speakers and the structural transformation of finished speakers, and has an obvious effect of eliminating bass standing waves for both new speakers and finished speakers.

[0057] Embodiment 5:

[0058] This embodiment discloses a method for modifying a sound box, which uses the standing wave elimination device described in Embodiment 2 to modify the sound box, including the following steps:

[0059] According to the size of the top plate of the bass speaker, a rectangular opening is opened on the top plate while retaining the edge, and the original attraction material on the inner wall of the top plate of the speaker is removed.

[0060] Mounting holes are processed at the four corners of the acrylic plate so that the acrylic plate can be fixedly connected to the top plate of the speaker by fixing bolts.

[0061] A particle receiving groove is processed at the edge of the rectangular copper foil.

[0062] The two ends of the copper wire are fixedly connected to the acrylic plate and the copper foil by rivets, and the sound-absorbing particles are evenly spread on the copper foil.

[0063] The acrylic plate is fixed to the top plate of the speaker by fixing bolts, and the acrylic plate covers the rectangular opening.

[0064] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A standing wave elimination device, characterized in that: The transparent plate includes a transparent plate, which can be pressed and fixed on the hole surface of the opening set on the top plate of the sound box and covers the opening. The transparent plate is connected to the metal foil through at least one metal wire. The edge of the metal foil is provided with a particle receiving groove. Sound-absorbing particles of different materials, different diameters and different colors are placed on the metal foil. The sound-absorbing particles are resin microspheres, wood wool microspheres or sound-absorbing cotton microspheres. A silicone edge sleeve is fixed at the edge of the transparent plate, and the transparent plate can be squeezed and fixed on the hole surface of the opening arranged on the top plate of the sound box through the silicone edge sleeve.

2. A standing wave elimination device, characterized in that: The invention comprises a transparent plate, which can be fixed on the upper surface of the top plate of the sound box and covers the openings set on the top plate of the sound box, the transparent plate is connected to the metal foil through at least one metal wire, the edge of the metal foil is provided with a particle receiving groove, and sound-absorbing particles of different materials, different diameters and different colors are placed on the metal foil; the sound-absorbing particles are resin microspheres, wood wool microspheres or sound-absorbing cotton microspheres; The edge of the transparent plate is provided with a mounting hole, and the transparent plate can be detachably fixedly connected to the top plate of the sound box through the mounting hole and the fixing piece.

3. A standing wave elimination device as claimed in claim 1 or 2, characterized in that: The transparent plate is made of a tempered glass plate or an acrylic plate.

4. A standing wave elimination device as claimed in claim 1 or 2, characterized in that: The metal foil is aluminum foil or copper foil.

5. A standing wave elimination device as claimed in claim 1 or 2, characterized in that: The metal wire is a gold wire, a silver wire or a copper wire.

6. A sound box, characterized in that: The speaker comprises a sound box body, a top plate of which is provided with an opening, and a standing wave elimination device as claimed in claim 1 or 2 is installed at the opening position of the top plate.

7. A method for modifying a speaker, characterized in that: A transparent plate is connected to one end of a metal wire, a metal foil is fixed to the other end of the metal wire, an opening is made on the top plate of the speaker, a plurality of sound-absorbing particles of different materials, diameters and colors are placed on the metal foil, the sound-absorbing particles are resin microspheres, wood wool microspheres or sound-absorbing cotton microspheres, and the transparent plate is fixed on the hole surface of the opening set on the top plate of the speaker by extrusion through a silicone edge sleeve, so that the transparent plate covers the opening.

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