Microphone and earphone capable of suppressing POP noise

Abstract

The utility model discloses a microphone and an earphone capable of suppressing POP noise, the microphone is provided with a sound receiving channel, and the microphone is arranged at the outlet of the sound receiving channel; the fabric further comprises first screen cloth and second screen cloth, the fabric air permeability of the first screen cloth ranges from 200 mm / s to 600 mm / s, and the fabric air permeability of the second screen cloth ranges from 3000 mm / s to 6000 mm / s. The first screen cloth and the second screen cloth are arranged on a sound receiving channel of the microphone and are used for attenuating ultrahigh frequency sound signals in the sound receiving channel of the microphone; the earphone comprises the microphone, and the sound receiving channel of the microphone is a channel through which the inner cavity of the earphone passes through the shell of the earphone and is communicated with the outside. According to the utility model, the generation of POP noise can be inhibited, and the pickup effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, in particular to a microphone and an earphone capable of suppressing POP noise. Background Art

[0002] TWS (True Wireless Stereo) wireless earphones have a noise reduction function and also design a transparency mode. The transparency mode allows external sounds to enter the earphones, enabling you to hear the surrounding environmental sounds, which is very useful in scenarios where you need to communicate with others or pay attention to safety, such as when walking, working, or communicating with others. However, the transparency design has a drawback. When a metal drops to the ground and makes an impact sound, POP NOISE (hereinafter referred to as POP noise) will appear in the transparency mode. The reason for generating POP noise is that there is a resonance peak in the microphone (MIC) itself. When the frequency of the external forcing force is close to the natural frequency of the microphone vibration system, the vibration of the microphone will become particularly strong, and the amplitude reaches the maximum value, thus generating a resonance phenomenon. This resonance is the reason for generating POP noise.

[0003] Through investigation, POP noise exists in the transparency mode of earphones of major brands on the market under the above circumstances. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a microphone and an earphone capable of suppressing POP noise, which can suppress the generation of POP noise and improve the sound pickup effect.

[0005] To solve the above technical problem, in the first aspect of the utility model, a microphone capable of suppressing POP noise is disclosed. The microphone has a sound collection channel, and the microphone is arranged at the outlet of the sound collection channel;

[0006] It also includes a first mesh cloth and a second mesh cloth. The air permeability of the fabric of the first mesh cloth is 200 - 600 mm / s, and the air permeability of the fabric of the second mesh cloth is 3000 - 6000 mm / s;

[0007] The first mesh cloth and the second mesh cloth are both arranged on the sound collection channel of the microphone to attenuate the ultra-high frequency sound signal in the sound collection channel of the microphone.

[0008] As an optional implementation manner, the first mesh cloth is a waterproof and breathable membrane.

[0009] As another optional implementation manner, the second mesh cloth is a 200-mesh wire mesh.

[0010] As another optional implementation manner, the frequency of the ultra-high frequency sound signal is 20 - 40 KHz.

[0011] The second aspect of the embodiments of the present utility model discloses an earphone, which includes a microphone as described in the first aspect of the embodiments of the present utility model. The sound collection channel of the microphone is a channel that penetrates through the outer shell of the earphone and communicates with the outside in the inner cavity of the earphone.

[0012] As an optional implementation manner, the outlet of the sound collection channel in the inner cavity of the earphone is covered by the PCB board of the earphone, and the PCB board is provided with a through hole at the outlet of the sound collection channel; the microphone is mounted on the PCB board, and the sound collection hole of the microphone communicates with the sound collection channel through the through hole.

[0013] As another optional implementation manner, the second mesh cloth is placed at the outlet of the sound collection channel and is covered by the PCB board.

[0014] As another optional implementation manner, the first mesh cloth is fixed at the inlet of the sound collection channel and covers the inlet of the sound collection channel.

[0015] Compared with the prior art, the embodiments of the present utility model have the following beneficial effects:

[0016] The embodiments of the present utility model reduce the resonance peak sensitivity of the microphone in the ultra-high frequency by setting a double mesh cloth to suppress the generation of POP noise, and at the same time maintain the sensitivity to signals in other frequency ranges, improving the sound pickup effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic structural diagram of an earphone with a microphone disclosed in the embodiments of the present utility model;

[0019] Figure 2 is disclosed in the embodiments of the present utility model Figure 1 an enlarged schematic view of a partial area A in;

[0020] Figure 3 is another schematic structural diagram of an earphone with a microphone disclosed in the embodiments of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0022] Embodiment 1

[0023] See Figures 1 to 2 , Embodiment of the present utility model discloses a microphone 1 that can suppress POP noise. The microphone 1 has a sound receiving channel 2, and the microphone 1 is provided at the outlet of the sound receiving channel 2; it further includes a first mesh cloth 3 and a second mesh cloth 4. The fabric air permeability of the first mesh cloth 3 is 200 - 600 mm / s, and the fabric air permeability of the second mesh cloth 4 is 3000 - 6000 mm / s; both the first mesh cloth 3 and the second mesh cloth 4 are provided on the sound receiving channel 2 of the microphone 1 for attenuating the ultra-high frequency sound signals in the sound receiving channel 2 of the microphone 1.

[0024] Existing earphones usually set a single-layer mesh cloth on the sound receiving channel 2 of the microphone 1, mainly for waterproofing and dustproofing. According to the characteristics of the mesh cloth material, the mesh cloth material has an attenuation effect on audio signals, and the attenuation effect on ultra-high frequency signals is greater than that on low-frequency signals. However, according to the existing investigation and experiments, the single-layer mesh cloth of existing earphones cannot suppress POP noise. Since the sensitivity of the resonance peak of the microphone 1 (MIC) at 27 - 30 KHz is more than 20 dB higher than the sensitivity at 1 KHz, the purpose of the double-mesh cloth design is to reduce the resonance peak sensitivity of the microphone 1 in the ultra-high frequency range (20 - 40 KHz). This can reduce the POP noise problem in the transparent mode. At the same time, this design has relatively little attenuation on the microphone 1 in the frequency range of 20 - 8000 Hz, which means it will not significantly affect the sound pickup effect of the microphone 1 in this frequency range (i.e., the low-frequency range). If a single-layer mesh cloth with a higher density is used, although it can also control the high-frequency resonance peak, it will also cause excessive attenuation of the low-frequency.

[0025] In this regard, the embodiment of the present utility model suppresses the generation of POP noise by setting a double-mesh cloth to reduce the resonance peak sensitivity of the microphone 1 in the ultra-high frequency range, while maintaining the sensitivity to signals in other frequency ranges and improving the sound pickup effect.

[0026] In an optional embodiment, the first mesh cloth 3 is a waterproof and breathable membrane.

[0027] In another optional embodiment, the second mesh cloth 4 is a 200-mesh gauze.

[0028] In yet another alternative embodiment, the frequency of the ultra-high frequency sound signal is 20 - 40 KHz.

[0029] Embodiment Two

[0030] Refer to Figures 1 to 3 , an embodiment of the present utility model discloses an earphone, including a microphone 1 as described in Embodiment One. The sound collection channel 2 of the microphone 1 is a channel that passes through the inner cavity of the earphone and communicates with the outside through the outer shell 5 of the earphone.

[0031] In an alternative embodiment, the outlet of the sound collection channel 2 in the inner cavity of the earphone is covered by the PCB board 6 of the earphone, and the PCB board 6 is provided with a through hole at the outlet of the sound collection channel 2; the microphone 1 is mounted on the PCB board 6, and the sound collection hole of the microphone 1 communicates with the sound collection channel 2 through the through hole.

[0032] In yet another alternative embodiment, the second mesh cloth 4 is placed at the outlet of the sound collection channel 2 and is covered by the PCB board 6.

[0033] In yet another alternative embodiment, the first mesh cloth 3 is fixed at the inlet of the sound collection channel 2 and covers the inlet of the sound collection channel 2.

[0034] What is disclosed in the content disclosed in the embodiments of the present utility model is only the preferred embodiments of the present utility model, and is only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that; they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A microphone capable of suppressing POP noise, the microphone having a sound receiving channel, and the microphone being disposed at an outlet of the sound receiving channel; It is characterized in that It further includes a first mesh cloth and a second mesh cloth, the fabric air permeability of the first mesh cloth is 200 - 600 mm / s, and the fabric air permeability of the second mesh cloth is 3000 - 6000 mm / s; Both the first mesh cloth and the second mesh cloth are disposed on the sound receiving channel of the microphone for attenuating ultra-high frequency sound signals in the sound receiving channel of the microphone.

2. The microphone according to claim 1, wherein, The first mesh cloth is a waterproof and breathable membrane.

3. The microphone according to claim 1, wherein The second mesh cloth is a 200-mesh screen fabric.

4. The microphone according to claim 1, characterized in that, The frequency of the ultra-high frequency sound signal is 20 - 40 KHz.

5. A headset, characterized in that, It includes the microphone according to any one of claims 1 - 4, and the sound receiving channel of the microphone is a channel through which the inner cavity of the earphone passes through the housing of the earphone and communicates with the outside.

6. The earphone according to claim 5, characterized in that, The outlet of the sound receiving channel in the inner cavity of the earphone is covered by the PCB board of the earphone, and the PCB board is provided with a through hole at the outlet of the sound receiving channel; the microphone is mounted on the PCB board, and the sound receiving hole of the microphone communicates with the sound receiving channel through the through hole.

7. The earphone according to claim 6, characterized in that, The second mesh cloth is placed at the outlet of the sound receiving channel and is covered by the PCB board.

8. The earphone according to claim 6, characterized in that, The first mesh cloth is fixed at the inlet of the sound receiving channel and covers the inlet of the sound receiving channel.

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