WO2023273963A1

WO2023273963A1 - Microphone assembly and camera

Info

Publication number: WO2023273963A1
Application number: PCT/CN2022/100185
Authority: WO
Inventors: 姜鹏基; 熊峰
Original assignee: 影石创新科技股份有限公司
Priority date: 2021-06-29
Filing date: 2022-06-21
Publication date: 2023-01-05
Also published as: CN215453202U

Abstract

Disclosed in the present utility model is a microphone assembly, comprising a housing and a microphone located in the housing, wherein the housing is provided with a sound inlet hole; the sound inlet hole is provided, on an outer side surface of the housing, with a noise reduction channel; and the noise reduction channel is provided with a noise reduction surface for changing an airflow direction. Compared with the prior art, according to the microphone assembly or a camera disclosed in the present utility model, the sound inlet hole is provided, at one end of an outer side of the housing, with the noise reduction channel having a flared cross section, so that an airflow blown into the sound inlet hole can be effectively evacuated from same, and excess airflow is prevented from rotating at a sound inlet to form a cyclone, thereby reducing a wind whistling noise.

Description

Microphone Assembly and Camera

technical field

The utility model relates to the technical field of microphone products, in particular to a microphone assembly and a camera with low wind noise.

Background technique

With the continuous development of electronic technology, the use of some electronic devices with sound pickup devices such as sports cameras is becoming more and more popular, and microphones as sound pickup devices are inevitably installed in these electronic products.

technical problem

Since sports cameras are mostly used in sports scenes such as walking, mountain climbing, rock climbing, and racing, the impact of wind noise on the sound quality of the microphone is particularly prominent. As shown in Figure 1, the sound inlet hole of the microphone of the existing sports camera is a long and narrow hole arranged on the casing. When the plane of the sound inlet is at an angle of 15°~45°, the airflow will swirl and form a whirlwind after entering the sound inlet, which will easily generate wind whistle noise, which will affect the sound pickup quality of the action camera.

Therefore, it is necessary to improve the existing microphones.

technical solution

The purpose of the utility model is to overcome the defects of the prior art and provide a microphone assembly and a camera with low wind noise, so as to reduce the wind noise in the moving state.

The technical solution of the microphone assembly disclosed in an embodiment of the present invention is as follows:

A microphone assembly, comprising a housing and a microphone located in the housing, the housing is provided with a sound inlet, the sound inlet is provided with a noise reduction channel on the outer surface of the housing, and the noise reduction channel is provided with Noise-reducing surface that redirects airflow.

Further, the cross section of the noise reduction channel in this embodiment is trumpet-shaped or inverted triangle.

Further, the noise reduction surface in this embodiment is a concave surface, an inclined surface or a convex surface, so that the direction of the airflow blowing towards the sound inlet hole is changed, so as to avoid the formation of wind noise in the sound inlet hole.

Further, the sound inlet hole in this embodiment also includes a sound inlet channel, one end of which is in communication with the noise reduction channel, and the other end is in communication with the inner surface of the housing, so that the sound from the outside of the housing can pass through the sound inlet channel From the noise reduction channel to the microphone.

Further, in order to prevent the microphone from entering water, in an optimized solution of this embodiment, a waterproof and breathable membrane may also be provided between the microphone and the sound inlet.

Further, in order to prevent the microphone from shaking and protect the microphone, foam can also be wrapped around the microphone.

An embodiment of the present invention discloses a camera, including a camera housing and a microphone assembly installed on the camera housing, wherein the microphone assembly is any one of the above microphone assemblies.

An embodiment of the present invention also discloses another camera, which includes a camera housing and a microphone installed in the camera housing, wherein the housing is provided with a sound inlet, and the sound inlet is located in the housing. The outer surface of the outer surface is provided with a noise reduction channel, and the noise reduction channel is provided with a noise reduction surface for changing the direction of the airflow.

Further, the surface of the noise reduction channel in this embodiment is concave, inclined or convex, so that the direction of the wind blowing towards the sound inlet can be changed, so as to avoid the formation of wind noise in the sound inlet.

Beneficial effect

Compared with the prior art, the microphone assembly or camera disclosed by the utility model can effectively evacuate the airflow blowing to the sound inlet by providing a horn-shaped noise reduction channel with a cross section at the outer end of the sound inlet of the housing. , avoiding excessive airflow swirling at the sound inlet to form a whirlwind, thereby reducing the noise of the wind whistle.

Description of drawings

FIG. 1 is a schematic diagram of a conventional microphone assembly.

FIG. 2 is a schematic diagram of a microphone assembly in Embodiment 1. FIG.

FIG. 3 is a schematic diagram of a microphone assembly in Embodiment 2. FIG.

FIG. 4 is a schematic diagram of a microphone assembly in Embodiment 3. FIG.

FIG. 5 is a schematic diagram of a camera in Embodiment 4. FIG.

FIG. 6 is a schematic diagram of a camera in Embodiment 5. FIG.

detailed description

In order to make the purpose, technical solutions and beneficial effects of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The scheme of the utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

实施例Example 11

As shown in FIG. 2 , the microphone assembly 10 in this embodiment includes a housing 1 , a microphone 2 , a waterproof and breathable membrane 3 and foam 4 .

The casing 1 is provided with a sound inlet (not marked in the figure), and the sound inlet is composed of a noise reduction channel 11 and a sound inlet channel 12 . The noise reduction passage 11 is arranged on the outer surface of the housing 1, and the noise reduction passage 11 is provided with a noise reduction surface 11a. The noise reduction surface 11a in this embodiment is a concave surface, so that the cross section of the noise reduction passage 11 is roughly bowl-shaped; One end of the sound channel 12 communicates with the noise reduction channel 11 , and the other end communicates with the inner surface of the housing 1 , so that the sound outside the housing 1 can be transmitted from the noise reduction channel 11 to the microphone 2 through the sound inlet channel 12 .

The microphone 2 is located on the inner surface of the casing 1 , near the sound inlet channel 12 , and is used to receive the sound from the outside of the casing 1 .

The waterproof and breathable membrane 3 is located between the sound inlet channel 12 and the microphone 2, and is used to prevent water and water vapor outside the casing 1 from entering the microphone 2, and also has a certain dustproof effect.

The foam 4 is wrapped around the microphone 2 for fixing and protecting the microphone 2 .

As shown by the arrow in Figure 2, when the airflow from the outside is obliquely blowing towards the sound inlet hole, the noise reduction surface 11a can diverge the airflow, so that the airflow flowing to the sound inlet channel 12 is greatly reduced, thereby avoiding or reducing the airflow in the sound inlet channel 12. A cyclone is formed inside, so wind noise can be avoided or reduced.

实施例Example 22

As shown in FIG. 3 , this embodiment discloses another microphone assembly. The microphone assembly 10 in this embodiment is basically the same as that in Embodiment 1, so it will not be repeated. The difference is that the noise reduction surface 11a in this embodiment is an inclined surface, so that the cross section of the noise reduction channel 11 is approximately Inverted triangle.

As shown by the arrow in Figure 3, when the airflow from the outside is obliquely blowing towards the sound inlet hole, the noise reduction surface 11a can make the airflow flow to the outside of the housing 1, thereby avoiding the formation of a whirlwind in the sound inlet passage 12, thus avoiding the generation of wind. noise.

实施例Example 33

As shown in Fig. 4, this embodiment discloses another microphone assembly. The microphone assembly 10 in this embodiment is basically the same as that in Embodiment 1, so it will not be repeated. The difference is that the noise reduction surface 11a in this embodiment is the drawing, so that the cross section of the noise reduction channel 11 is approximately Trumpet.

As shown by the arrow in Figure 4, when the airflow from the outside is blowing obliquely to the sound inlet hole, the noise reduction surface 11a can diverge the airflow, so that the airflow flowing to the sound inlet channel 12 is greatly reduced, thereby avoiding or reducing the airflow in the sound inlet channel 12. Creates a cyclone so wind noise is avoided or reduced.

实施例Example 44

As shown in Fig. 5, a camera 100 is disclosed in this embodiment, including a microphone assembly 10 and a camera housing 20, and the microphone assembly 10 is installed on the camera housing 20, wherein the microphone assembly 10 is the embodiment 1, the embodiment 2 or the microphone assembly described in Embodiment 3. The microphone assembly 10 in this embodiment can be installed or removed from the camera as a whole, which facilitates the maintenance of the camera 100. For example, when the microphone assembly fails, it can be replaced with another microphone assembly without replacing or repairing the camera 100.

Those skilled in the art know that the microphone assembly 10 in this embodiment can transmit the picked-up audio data to the camera 100 via Bluetooth.

实施例Example 55

As shown in Figure 6, this embodiment discloses another camera, the sound inlet channel of the camera 100 in this embodiment is basically the same as the sound inlet channel of the microphone assembly in Embodiment 1, Embodiment 2 or Embodiment 3, That is, the camera housing 1 in this embodiment is the housing of the microphone assembly in Embodiment 1, Embodiment 2 or Embodiment 3.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims

A microphone assembly, comprising a housing and a microphone located in the housing, characterized in that the housing is provided with a sound inlet, the sound inlet is provided with a noise reduction channel on the outer surface of the housing, and the noise reduction channel is provided on the outer surface of the housing. The noise channel features a noise-reducing surface that redirects the airflow.
The microphone assembly according to claim 1, wherein the cross section of the noise reduction channel is bowl-shaped, inverted triangle-shaped or trumpet-shaped.
The microphone assembly according to claim 1, wherein the noise reduction surface is concave, inclined or convex.
The microphone assembly according to claim 1, wherein the sound inlet hole further comprises a sound inlet channel, one end of the sound inlet channel communicates with the noise reduction channel, and the other end communicates with the inner surface of the casing.
The microphone assembly according to claim 1, wherein a waterproof and gas-permeable membrane is provided between the microphone and the sound inlet hole.
The microphone assembly according to claim 1, wherein foam is wrapped around the microphone.
A camera, comprising a camera housing and a microphone assembly mounted on the camera housing, wherein the microphone assembly is the microphone assembly according to any one of claims 1-6.
A camera, comprising a camera housing and a microphone installed in the camera housing, characterized in that the housing is provided with a sound inlet, and the sound inlet is provided with a noise reduction channel on the outer surface of the housing, so The noise reduction channel is provided with a noise reduction surface that changes the direction of the airflow.
The camera according to claim 8, wherein the cross-section of the noise reduction channel is trumpet-shaped.
The camera according to claim 8, wherein the surface of the noise reduction channel is concave, inclined or convex.