Top net support of condenser microphone and condenser microphone

Abstract

The utility model discloses a top net support of a condenser microphone and the condenser microphone. The top net support comprises a plurality of hollowed-out side plates, and a cylinder is defined by the side plates. According to the capacitor microphone, the hollow top net bracket is arranged, so that the side incoming sound can be improved, the side sound reflection can be reduced, the frequency response characteristic of the capacitor microphone can be improved, the directional characteristic can be optimized, the comb filtering effect and the side lobe phenomenon can be inhibited, and the capacitor microphone has the advantages of simple structure, easiness in assembly, good acoustic performance and the like.

Description

Technical Field

[0001] The utility model relates to the field of acoustic equipment, in particular to a top net support of a condenser microphone and the condenser microphone. Background Art

[0002] Condenser microphones have the characteristics of high sensitivity, wide bandwidth, wide dynamic range, and good transient characteristics, and have been widely used. The directivity of a condenser microphone refers to the characteristic that the sensitivity of the microphone changes with the incident direction of the sound wave. When the directivity of a condenser microphone is weak, there is a problem of howling in the sound reinforcement system, especially handheld condenser microphones are very prone to howling failures in the sound reinforcement environment of live performances.

[0003] The structure of the main components of the existing condenser microphone is as follows: Figure 1 As shown, it mainly includes a housing 010 and a sound head 020. The sound head 020 is located at the center of the cavity inside the housing 010. The cavity can be specifically divided into a front cavity 011, a side cavity 012 and a rear cavity 013 with reference to the upper surface plane and the lower surface plane of the sound head 020. The front cavity 011 of the existing condenser microphone also includes Figure 2 The non-hollow existing top mesh bracket 030 shown in the figure has a solid plate except for the existing snap hole 031, and the sound wave transmittance is low, which will have an adverse effect on the acoustic characteristics of the microphone, causing a certain degree of weakening of directivity, comb filtering effect and side lobe phenomenon, etc. Utility Model Content

[0004] In view of this, the utility model proposes a top mesh bracket of a condenser microphone and a condenser microphone, which can solve the above-mentioned existing technical problems. The utility model provides the following technical solutions:

[0005] A top net support of a condenser microphone comprises a plurality of hollowed-out side plates, wherein the plurality of side plates are surrounded in a cylindrical shape.

[0006] Optionally, the hollowing rate of the top mesh support is 40% to 60%.

[0007] Optionally, the top net support includes four arched side panels of the same shape.

[0008] Optionally, the arched side panel includes: a sound-transmitting hollow window and a buckle hole, the sound-transmitting hollow window is used for sound transmission, and the buckle hole is used for connecting with an external buckle.

[0009] Optionally, the sound-transmitting hollow window is arranged in a lower area of ​​the arched side panel.

[0010] Optionally, the sound-transmitting hollow window includes an even number of symmetrically distributed window units.

[0011] Optionally, the window unit is arc-shaped.

[0012] A condenser microphone comprises a shell, wherein the shell has a front cavity, a side cavity and a rear cavity inside, and is characterized in that the condenser microphone also comprises a top mesh support of the utility model, and the top mesh support is located in the front cavity.

[0013] Optionally, it also includes a sound-conducting back seat, which is located in the back cavity, and includes a cone head, a base, and a connecting part, wherein: the cone head is a rotating body; the base is a hollow cylinder; the cone head and the base have the same central axis of rotation; the first end of the base is connected to the cone head, the second end of the base is connected to the connecting part, and the connecting part is connected to the outer shell.

[0014] Optionally, a surface of at least one of the front cavity, the side cavity and the rear cavity is covered with a sound absorbing material layer; and / or, the rear cavity is filled with a sound absorbing material block.

[0015] According to the technical solution of the utility model, by arranging a hollow top mesh bracket on the side of the sound head, the side sound can be increased and the side sound reflection can be reduced, so that the frequency response characteristics of the condenser microphone can be improved, the directional characteristics can be optimized, the comb filtering effect and the side lobe phenomenon can be suppressed, thereby reducing howling. It has the advantages of simple structure, easy assembly, good acoustic performance, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For the purpose of illustration and not limitation, the present invention will now be described according to its preferred embodiments, particularly with reference to the accompanying drawings, in which:

[0017] Figure 1 It is a structural schematic diagram of an existing condenser microphone;

[0018] Figure 2 A schematic diagram of a top mesh support of an existing condenser microphone;

[0019] Figure 3 It is a schematic diagram of the top mesh support of the condenser microphone of the utility model;

[0020] Figure 4A It is a schematic diagram of a concave sound-conducting rear seat of a condenser microphone of the present utility model;

[0021] Figure 4B The figure is a schematic diagram of the convex sound-conducting rear seat of the condenser microphone of the present invention.

[0022] In the figure:

[0023] 010, housing; 020, sound head; 011, front cavity; 012, side cavity; 013, rear cavity;

[0024] 030, existing top net bracket; 031, existing buckle hole;

[0025] 30. Top net bracket; 310. Arched side panel; 311. Hollow window; 312. Buckle hole;

[0026] 41A, concave cone head; 41B, convex cone head; 42, base; 43, connecting part. DETAILED DESCRIPTION

[0027] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms such as "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The top mesh support of the condenser microphone of the utility model embodiment includes a plurality of hollow side panels, and the plurality of side panels are surrounded into a cylindrical shape. The top mesh support of the condenser microphone is convenient for lateral sound transmission due to the hollow side panels, and can improve the acoustic performance of the condenser microphone.

[0030] The hollowing rate of the top mesh bracket can be 40% to 60%. The hollowing rate is the result of dividing the surface area of ​​the hollow part of the top mesh bracket by the total surface area of ​​the bracket. If the hollowing rate is too small, it will be difficult to improve the side sound and reduce the side sound reflection, and the sound transmission effect will be poor; if the hollowing rate is too large, the mechanical strength is insufficient, and it is easy to be deformed or even damaged by force in the environment.

[0031] Specifically, Figure 3 As shown, the top mesh support 30 of the condenser microphone of the utility model embodiment can include four arched side panels 310 of the same shape. The four arched side panels 310 are connected in pairs and enclosed into a square tube. The design has a regular shape and is easy to open a mold for manufacturing.

[0032] Each arched side panel 310 includes a sound transmission hollow window 311 for transmitting sound, and a buckle hole 312 for connecting with an external buckle.

[0033] The arched side panel 310 is defined as follows: the area close to the straight bottom of the arch is the lower area, and the area close to the top of the arch is the upper area. The sound transmission hollow window 311 can be set in the lower area of ​​the arched side panel 310. The buckle hole 312 can be set in the upper area of ​​the arched side panel 310.

[0034] The sound transmission hollow window 111 may include an even number of symmetrically distributed window units. These window units may be in an arc shape. Figure 3 Four arc-shaped window units are shown in the figure, wherein the two upper window units are slightly larger and the two lower window units are slightly smaller, but this is only for example and not limitation.

[0035] The condenser microphone of the embodiment of the utility model has a shell, and the interior of the shell includes a front cavity, a side cavity and a rear cavity. Among them, the front cavity also includes the top mesh bracket disclosed in the utility model. Therefore, since the top mesh bracket in the front cavity of the condenser microphone head has a hollow side plate, it can improve the side sound and reduce the side sound reflection, so it can improve the frequency response characteristics of the condenser microphone, optimize the directional characteristics, suppress the comb filter effect and the side lobe phenomenon, and thus have better acoustic performance.

[0036] In order to further improve product performance, the condenser microphone of the embodiment of the utility model may also include a sound-conducting back seat, which is located in the back cavity. The sound-conducting back seat may include a cone head, a base, and a connecting portion. The cone head is a rotating body. The base is a hollow cylinder; the cone head and the base have the same central axis of rotation. The first end of the base is connected to the cone head, and the second end of the base is connected to the connecting portion, which is connected to the housing. By setting the sound-conducting back seat, the focus, diffusion degree and direction of the rear sound can be changed, and the acoustic directivity characteristics can be improved, thereby reducing the probability of howling of the condenser microphone.

[0037] The sound guide back seat can be divided into two types: convex and concave. The difference lies in the shape of the cone head. Figure 4A As shown, it includes a concave cone head 41A, a base 42 and a connecting portion 43. The convex sound-conducting rear seat is as shown in FIG. Figure 4B As shown, it includes a convex cone head 41B, a base 42 and a connecting portion 43. The hollow portion of the base 42 is used to pass through some cables. If there are many cables to be passed through, a threading hole can also be opened on the cone head, for example Figure 4A The upper surface of the concave cone head 41A in the figure shows a threading hole at the left position. Figure 4B There is a threading hole at the right position of the lower surface of the convex cone head 41B.

[0038] The surface of at least one of the front cavity, side cavity and rear cavity of the condenser microphone of the embodiment of the utility model can be covered with a sound absorbing material layer. Also, the rear cavity of the condenser microphone can be filled with a block of sound absorbing material. In this way, the sound absorbing capacity of the front cavity, side cavity and rear cavity can be increased, thereby improving the directional characteristics and reducing the probability of howling of the condenser microphone. The sound absorbing material can specifically be a sound absorbing sponge.

[0039] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A top mesh support for a condenser microphone, characterized in that: It comprises a plurality of hollowed-out side plates, the plurality of side plates are enclosed in a cylindrical shape, the hollowing rate of the top net support is 40% to 60%, and the top net support comprises four arched side plates of the same shape.

2. The top mesh support of the condenser microphone according to claim 1, characterized in that: The arched side panel comprises: a sound-transmitting hollow window and a buckle hole, wherein the sound-transmitting hollow window is used for sound transmission, and the buckle hole is used for connecting with an external buckle.

3. The top mesh support of the condenser microphone according to claim 2, characterized in that: The sound-transmitting hollow window is arranged in the lower area of ​​the arched side panel.

4. The top mesh support of the condenser microphone according to claim 3, characterized in that: The sound-transmitting hollow window includes an even number of symmetrically distributed window units.

5. The top mesh support of the condenser microphone according to claim 4, characterized in that: The window unit is in an arc shape.

6. A condenser microphone, comprising a housing, wherein the housing has a front cavity, a side cavity and a rear cavity, wherein: The condenser microphone further comprises a top mesh support according to any one of claims 1 to 5, wherein the top mesh support is located in the front cavity.

7. The condenser microphone according to claim 6, characterized in that: It also includes a sound-conducting rear seat, which is located in the rear cavity and includes a cone head, a base, and a connecting part, wherein: The cone head is a rotating body; The base is a hollow cylinder; The cone head and the base have the same central axis of rotation; The first end of the base is connected to the cone head, the second end of the base is connected to the connecting part, and the connecting part is connected to the shell.

8. The condenser microphone according to claim 6, characterized in that: The surface of at least one of the front cavity, the side cavity and the rear cavity is covered with a sound absorbing material layer; and / or the rear cavity is filled with a sound absorbing material block.

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