CN113556637A

CN113556637A - Microphone device

Info

Publication number: CN113556637A
Application number: CN202110752852.6A
Authority: CN
Inventors: 叶绍勤; 吴忠林; 黄葛玲
Original assignee: Mianyang Erzan Acoustic Technology Co ltd
Current assignee: Mianyang Erzan Acoustic Technology Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-10-26

Abstract

The present invention provides a microphone device, including: the microphone comprises a microphone assembly and a sound production assembly, wherein the microphone assembly comprises a microphone and a circuit board, and the sound production assembly comprises a shell, at least one loudspeaker and at least one special-shaped wave guide plate; the microphone, the circuit board, the loudspeaker and the special-shaped wave guide plate are arranged in the shell; the vibrating surface of the loudspeaker is arranged back to the microphone, the top surface of the special-shaped wave guide plate is arranged opposite to the vibrating surface of the loudspeaker, the top surface of the special-shaped wave guide plate comprises a metal net and a reflecting cavity, and a reflecting gap is formed between the metal net and the reflecting cavity. According to the microphone device provided by the invention, a sound field with a downward loudspeaker is not covered by a dead angle of 360 degrees, a reflection gap is formed between the metal mesh and the reflection cavity, and after primary sound transmission and reflection are carried out on the metal mesh, sound is transmitted to the reflection gap for secondary reflection, so that the technical effect of secondary reflection of the sound is realized, the sound is effectively diffused, the sound effect is improved, the microphone device is not limited by a position scene, and the transmission range of the sound is wider.

Description

Microphone device

Technical Field

The invention relates to the technical field of electroacoustic equipment, in particular to a microphone device.

Background

With the improvement of the life of citizens, personalized personal consumption entertainment products are more and more abundant. The personal integrated karaoke microphone is also successively launched in recent years, and the use scene of the product is more and more accepted by consumers.

The existing product and the technical scheme generally adopt a design that double loudspeakers are oppositely arranged, such as a microphone and sound box integrated device with an authorized bulletin number of CN 205491072U; for example, there is a hand-held microphone speaker (application publication No. CN109275053A) in which a sound baffle is placed between two speakers in a manner of placing the speakers in opposition; however, the above technical solutions are all set by at least sampling two loudspeakers in opposite directions, as shown in fig. 1, the microphone receiver is too close to the loudspeaker box, the sound emitted by the unit loudspeaker directly radiates to the microphone receiver pickup part, which causes the sound emitted by the loudspeaker and the sound circuit collected by the receiver to be repeatedly amplified and to resonate in positive feedback, so that the self-excitation, howling, and mark-flying distortions are easily generated, which causes poor user experience, and cannot be compared with a large loudspeaker box or a traditional KTV, the proportion of direct sound heard by the user is low, the music surrounding sense is poor, and the singing sound of the user are difficult to be merged. The products generally have the problems of small volume, poor use experience, small direct sound proportion, poor sound surrounding sense, poor integral music layering sense, insufficient sound brightness and the like of a microphone and a receiver, and the problems are difficult to solve because the existing digital processing technology adopts a simple frequency attenuation mode.

Disclosure of Invention

The invention provides a microphone device, which adopts the technical scheme that at least one special-shaped wave guide plate is arranged opposite to the vibration surface of at least one loudspeaker, the top surface of the special-shaped wave guide plate comprises a metal net and a reflection cavity, and a reflection gap is formed between the metal net and the reflection cavity, so that after the metal net is subjected to primary sound transmission and reflection, sound is transmitted to the reflection gap for secondary reflection, the technical effect of sound secondary reflection is realized, the sound is effectively diffused, the sound effect is improved, the sound field is free of dead angle and 360-degree coverage, is not limited by a position scene, and the transmission range is wider.

In order to achieve the purpose, the invention provides the following technical scheme:

a microphone apparatus, comprising: the microphone comprises a receiver assembly 1 and a sound production assembly 2, wherein the receiver assembly 1 comprises a microphone 11 and a circuit board 13, and the sound production assembly 2 comprises a shell, at least one loudspeaker and at least one special-shaped wave guide plate 26;

the microphone 11, the circuit board 13, the loudspeaker 25 and the special-shaped wave guide plate 26 are arranged in the shell, and the microphone 11 and the loudspeaker 25 are respectively in signal connection with the circuit board 13;

the vibration plane of the speaker 25 is disposed to face away from the microphone 11, the top surface 261 of the shaped wave guide plate 26 is disposed to face the vibration plane of the speaker 25, the top surface 261 of the shaped wave guide plate 26 includes a metal mesh 2610 and a reflective cavity 2611, and a reflective gap 2612 is formed between the metal mesh 2610 and the reflective cavity 2611.

Preferably, the metal mesh 2610 includes a mesh surface and a support portion, the metal mesh 2610 is disposed in the reflective cavity 2611 through the support portion, and the mesh surface and a bottom surface of the reflective cavity 2611 form a reflective gap 2612.

Preferably, the metal mesh 2610 includes a mesh surface and a support portion, the metal mesh 2610 is disposed outside the reflective cavity 2611 through the support portion, and the mesh surface and the bottom surface of the reflective cavity 2611 form a reflective gap 2612.

Preferably, the shaped wave guide plate 26 further includes a side surface 263 and a bottom edge 264, the side surface 263 connects the top surface 261 and the bottom edge 264, and the side surface 263 is provided with the shaped structure 262.

Preferably, the side surface 263 is an arc surface or a plane surface connecting the top surface 261 and the bottom edge 264.

Preferably, the edge of the bottom edge 264 is an outwardly and upwardly curved edge.

Preferably, one side of the shaped structure 262 is connected to the side surface 263, and the shaped structure 262 is vertically disposed on the side surface 263.

Preferably, the side 263 of the special-shaped wave guide plate 26 is further provided with a mounting hole 267 and an open slot 268.

Preferably, the receiver assembly 1 further comprises a damping means 12, the damping means 12 being arranged between the microphone 11 and the circuit board 13.

Preferably, the sound generating assembly 2 further comprises a sound cavity 24, the sound cavity 24 is between the circuit board 13 and the speaker 25, and the left vibrating plate 22 and the right vibrating plate 23 are respectively disposed on the left side and the right side of the sound cavity 24.

Through implementing above technical scheme, have following technological effect: according to the microphone device, the loudspeaker is covered in a downward sound field by 360 degrees without dead angles, and the technical scheme that the reflecting gap is formed between the metal net and the reflecting cavity is adopted, so that after the metal net is subjected to primary sound transmission and reflection, sound is transmitted to the reflecting gap to be subjected to secondary reflection, the technical effect of sound secondary reflection is realized, the sound is effectively diffused, the sound effect is improved, the microphone device is not limited by a position scene, and the transmission range of the sound is wider.

Drawings

Fig. 1 is a schematic view of a sound wave direction structure of a conventional dual microphone device according to the present invention;

fig. 2 is a schematic structural diagram of a microphone device provided in the present invention;

fig. 3 is a schematic structural diagram (exploded view) of a microphone device provided by the present invention;

fig. 4 is a schematic structural view of a speaker diaphragm vertex of the microphone device provided by the present invention disposed opposite to a top surface of a special-shaped waveguide plate;

fig. 5 is a schematic structural view (exploded view) of a special-shaped wave guide plate of the microphone device according to the present invention;

fig. 6 is a schematic structural view of a special-shaped wave guide plate of the microphone device according to the present invention.

Detailed Description

In order to better understand the technical scheme of the invention, the following detailed description is made on the embodiments provided by the invention in combination with the accompanying drawings.

A microphone assembly, as shown in fig. 2-3, comprising: the microphone comprises a receiver assembly 1 and a sound production assembly 2, wherein the receiver assembly 1 comprises a microphone 11 and a circuit board 13, and the sound production assembly 2 comprises a shell, at least one loudspeaker and at least one special-shaped wave guide plate 26; the microphone 11, the circuit board 13, the loudspeaker 25 and the special-shaped wave guide plate 26 are arranged in the shell, and the microphone 11 and the loudspeaker 25 are respectively in signal connection with the circuit board 13. The microphone is characterized by further comprising a handle arranged below the casing, a power supply device for supplying power to the circuit board and the loudspeaker is arranged in the handle, the casing comprises an upper outer cover 21 and a lower outer cover 27, the upper outer cover 21 and the lower outer cover 27 are provided with sound outlet holes, the upper outer cover 21 is sleeved on the microphone 11, and the lower outer cover 27 is fixedly connected with the handle. The sound voiceprint of the user when singing is picked up through the microphone and transmitted to the DSP circuit board through the wire, the circuit board collects the sound signals of the wire in a digital form through internal audio processing and specific DSP (signal digital processing algorithm), then the sound signals are processed through conversion, filtering, estimation, enhancement, compression, identification and the like to obtain the digital signals meeting the requirements, the problem of label flying and self-excitation caused by the fact that the sound is transmitted to a microphone receiver through the DSP algorithm and matched with a specific sound cavity structure is solved, then the sound signals are transmitted to the loudspeaker through a power amplifier of the circuit board, and the sound signals are transmitted through a vibrating diaphragm of the loudspeaker and then pass through a special-shaped wave guide plate and a lower outer cover to form a sound field without dead angles in 360-degree coverage. In this embodiment, it is preferable that the vibration plane of the speaker 25 is disposed away from the microphone 11, the top surface 261 of the special-shaped wave guide plate 26 is disposed opposite to the vibration plane of the speaker 25, the top surface 261 of the special-shaped wave guide plate 26 includes a metal mesh 2610 and a reflective cavity 2611, and a reflective gap 2612 is formed between the metal mesh 2610 and the reflective cavity 2611. The metal mesh with form the technical scheme in reflection clearance between the reflection chamber, realize that the metal mesh once passes through the sound and reflects the back, sound propagation carries out the secondary reflection to the reflection clearance, realizes the technical effect of sound secondary reflection, and is effectual to sound diffusion, improves the sound effect, does not receive the restriction of position scene, with the transmission range of sound wider.

In addition to the above embodiments, in other embodiments, as shown in fig. 5 to 6, the metal mesh 2610 includes a mesh surface and a supporting portion, the metal mesh 2610 is disposed in or outside the reflective cavity 2611 through the supporting portion, and the mesh surface and the bottom surface of the reflective cavity 2611 form a reflective gap 2612. Specifically, the mesh surface on the upper part of the metal mesh 2610 is provided with a plurality of sound leakage holes, the whole area of the mesh surface is basically the same as that of the bottom surface of the reflection cavity, and the supporting part is a metal frame matched with the shape of the reflection cavity so as to form a reflection gap between the metal mesh 2610 and the bottom surface of the reflection cavity.

On the basis of the above embodiment, in another embodiment, as further shown in fig. 4, the special-shaped wave guide plate 26 further includes a side surface 263 and a bottom edge 264, the side surface 263 connects the top surface 261 and the bottom edge 264, and the side surface 263 is provided with the special-shaped structure 262. The side surface is divided into a plurality of parts by the special-shaped structure 262, so that a plurality of sound channels are generated, and the sound of the loudspeaker is diffused to the periphery more orderly. The side surface 263 is an arc surface or a plane surface connecting the top surface 261 and the bottom edge 264. The side 263 further reflects and diffuses sound emitted by the speaker, and diffuses the sound to the periphery, so that the transmission range of the sound is wider.

In this embodiment, preferably, the edge of the bottom side 264 is an outward and upward arc side, further spreading the sound of the speaker outward. In the present embodiment, the special-shaped structure 262 is a plate or an approximate plate, such as a triangular plate, a quadrangular plate or an arc plate, one side of the special-shaped structure 262 is connected to the side 263, and the special-shaped structure 262 is vertically disposed on the side 263 to realize the separation of the side 263 of the special-shaped wave guide plate 26 into a plurality of sound channels. The side 263 of the special-shaped wave guide plate 26 is further provided with a mounting hole 267 and an open slot 268. The wave guide plate 26 is firmly arranged in the housing through the mounting hole 267. The open slot 268 is specifically disposed at the edge of the side 263 of the special-shaped waveguide plate 26 and aligned with the special-shaped structure 262, and the open slot 262 and the housing form a hole site to further transmit sound and form an audio filtering effect with the auxiliary effect of the sound hole.

On the basis of the above embodiment, in other embodiments, furthermore, the receiver assembly 1 further includes a shock absorbing device 12, and the shock absorbing device 12 is disposed between the microphone 11 and the DSP circuit board 13. The sound production assembly 2 further comprises a sound cavity 24, the sound cavity 24 is arranged between the DSP circuit board 13 and the speaker 25, and the left side and the right side of the sound cavity 24 are respectively provided with a left vibrating plate 22 and a right vibrating plate 23. When the loudspeaker works, the air in the sealed sound cavity is compressed, the left vibrating plate and the right vibrating plate can vibrate simultaneously due to pressure, and the generated low-frequency sound is diffused out through the shell. Meanwhile, the left vibrating plate and the right vibrating plate can be designed to the maximum, the low-frequency submergence can reach about 60Hz, and the multiplication rule of the vibrating area of the loudspeaker is satisfied, so that the low-frequency performance is more plump.

While the embodiments of the present invention have been described in detail, those skilled in the art will appreciate that the various embodiments and applications of the invention are not limited to the details of the embodiments and applications illustrated in the drawings.

Claims

1. A microphone device, characterized by comprising a receiver assembly (1) and a sound production assembly (2), wherein the receiver assembly (1) comprises a microphone (11) and a circuit board (13), and the sound production assembly (2) comprises a shell, at least one loudspeaker and at least one special-shaped wave guide plate (26);

the microphone (11), the circuit board (13), the loudspeaker (25) and the special-shaped wave guide plate (26) are arranged in the shell, and the microphone (11) and the loudspeaker (25) are respectively in signal connection with the circuit board (13);

the vibration surface of the loudspeaker (25) is arranged back to the microphone (11), the top surface (261) of the special-shaped wave guide plate (26) is arranged opposite to the vibration surface of the loudspeaker (25), the top surface (261) of the special-shaped wave guide plate (26) comprises a metal net (2610) and a reflection cavity (2611), and a reflection gap (2612) is formed between the metal net (2610) and the reflection cavity (2611).

2. The microphone device as claimed in claim 1, wherein the metal mesh (2610) includes a mesh surface and a support portion, the metal mesh (2610) is disposed in the reflective cavity (2611) through the support portion, and the mesh surface and a bottom surface of the reflective cavity (2611) form a reflective gap (2612).

3. The microphone device as claimed in claim 1, wherein the metal mesh (2610) includes a mesh surface and a support portion, the metal mesh (2610) is disposed outside the reflective cavity (2611) by the support portion, and the mesh surface and a bottom surface of the reflective cavity (2611) form a reflective gap (2612).

4. The microphone arrangement as claimed in claim 1, characterized in that the shaped wave guide plate (26) further comprises a side surface (263) and a bottom edge (264), the side surface (263) connecting the top surface (261) and the bottom edge (264), the side surface (263) being provided with a shaped structure (262).

5. The microphone apparatus according to claim 4, wherein the side surface (263) is an arc surface or a plane surface connecting the top surface (261) and the bottom edge (264).

6. The microphone apparatus as claimed in claim 4, wherein the edge of the bottom side (264) is an outwardly and upwardly curved side.

7. Microphone arrangement according to claim 4, characterized by the fact that one side of the shaped structure (262) is connected to the side face (263), the shaped structure (262) being arranged vertically on the side face (263).

8. The microphone arrangement as claimed in claim 1, characterized in that the side face (263) of the shaped wave guide plate (26) is further provided with a mounting hole (267) and an open slot (268).

9. The microphone arrangement as claimed in claim 1, characterized in that the receiver assembly (1) further comprises a damping means (12), the damping means (12) being arranged between the microphone (11) and a circuit board (13).

10. The microphone device according to claim 1, wherein the sound emitting module (2) further comprises a sound cavity (24), the sound cavity (24) is between the circuit board (13) and the speaker (25), and a left vibrating plate (22) and a right vibrating plate (23) are respectively provided on the left and right sides of the sound cavity (24).