Pickup module, recording pen and pickup method

Abstract

The invention provides a pickup module, a recording pen and a pickup method, the pickup module comprises a base body, an omnidirectional microphone, a directional microphone assembly and a driving assembly, and the base body is provided with a control unit; the plurality of omnidirectional microphones are dispersedly arranged on the base body and are in signal connection with the control unit so as to transmit sound source information to the control unit; the directional microphone assembly is rotationally arranged on the base body; the driving assembly is arranged on the base body and is in transmission connection with the directional microphone assembly, and the driving assembly is in control connection with the control unit, so that the control unit can control the directional microphone assembly to steer according to the sound source information, and the sound receiving range of the directional microphone assembly is at least partially overlapped with the sound source distribution range; the directional microphone assembly can automatically adjust the sound receiving direction under the assistance of the omnidirectional microphone and the control unit, so that the directional microphone assembly can pick up sounds in different directions, excessive manual assistance is avoided, and the directional microphone assembly is convenient to operate and has a better sound pickup effect.

Description

Technical Field

[0001] The present application relates to the technical field of voice recorders, and in particular to a sound pickup module, a voice recorder and a sound pickup method. Background Art

[0002] As a convenient recording device, voice recorders have been widely used in many fields such as learning, work, and artistic creation. In some scenes where recording is required, such as in meetings, the sound sources come from different directions. However, the voice recorders in the related art are mostly fixed directional microphones or manually adjustable directional microphones. Among them, the voice recorders with fixed directional microphones can only receive sounds from a fixed direction, while the manually adjustable directional microphones need to manually adjust the direction of the directional microphone to receive sounds from different directions, which is very inconvenient to operate. In other words, the voice recorders in the related art have the problem of not being able to simultaneously meet the requirements of easy operation and better sound pickup effect. Summary of the invention

[0003] In view of this, the present application provides a sound pickup module, which, by setting a control unit, and an omnidirectional microphone, a directional microphone assembly, and a driving assembly all connected to the control unit, enables the directional microphone to automatically find the source according to the sound source information provided by the omnidirectional microphone, thereby effectively improving the convenience of operation and the sound pickup effect. In addition, the present application also provides a voice recorder including the above-mentioned sound pickup module, and a sound pickup method applicable to the above-mentioned sound pickup module.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A sound pickup module, comprising:

[0006] A base body provided with a control unit;

[0007] A plurality of omnidirectional microphones are dispersedly arranged on the base and are all connected to the control unit by signal so as to transmit sound source information to the control unit;

[0008] A directional microphone assembly is rotatably disposed on the base;

[0009] A driving assembly is disposed on the base and is transmission-connected to the directional microphone assembly, and the driving assembly is control-connected to the control unit so that the rotation of the directional microphone assembly can be controlled by the control unit;

[0010] Wherein, the control unit can control the steering of the directional microphone assembly according to the sound source information, so that the sound receiving range of the directional microphone assembly at least partially overlaps with the sound source distribution range.

[0011] Optionally, the directional microphone assembly comprises:

[0012] A steering bracket, comprising a first steering bracket and a second steering bracket which are arranged in a mirror image, wherein the first steering bracket and the second steering bracket are both rotatably arranged on the base and are drivingly connected to the driving assembly;

[0013] A plurality of directional microphones are divided into two groups, and the two groups of directional microphones are respectively fixed on the first steering bracket and the second steering bracket.

[0014] Optionally, the control unit can identify the direction of a sound source within a first range through the multiple omnidirectional microphones, and the first range is a range in which the directional microphone assembly can receive sound by adjusting the angle between the first steering bracket and the second steering bracket.

[0015] Optionally, the driving component includes:

[0016] A driving motor is arranged on the base body.

[0017] The transmission gear set is arranged on the base, and includes a first transmission gear and a second transmission gear, both of which are transmission-connected to the driving motor, and the first transmission gear is transmission-connected to the first steering bracket, and the second transmission gear is transmission-connected to the second steering bracket.

[0018] Optionally, the directional microphone assembly rotates within a first plane;

[0019] The driving motor and the transmission gear set are driven by a worm gear, so that the extension direction of the output shaft of the driving motor can be parallel to the first plane.

[0020] Optionally, the first transmission gear is rotatably disposed on the base via a first rotating shaft, the second transmission gear is rotatably disposed on the base via a second rotating shaft and is meshedly connected with the first transmission gear, and the worm gear is disposed on the first rotating shaft or the second rotating shaft to realize the transmission connection between the drive motor and the transmission gear group.

[0021] Optionally, the steering bracket is rotatably arranged at one end of the base and is provided with a tooth portion, and the tooth portion is meshingly connected with both the first transmission gear and the second transmission gear, and the other end is provided with a mesh cover, and the directional microphone is arranged inside the mesh cover.

[0022] Optionally, the connection line of the multiple omnidirectional microphones is U-shaped.

[0023] A voice recorder comprises the sound pickup module.

[0024] A sound pickup method is applicable to the sound pickup module, and the sound pickup method comprises the following steps:

[0025] Omnidirectional microphone picks up sound;

[0026] The control unit determines the distribution range of the sound source according to the size of the sound picked up by the different omnidirectional microphones;

[0027] The control unit controls the steering bracket to rotate according to the sound source distribution range, so that the sound receiving range of the directional microphone assembly at least partially overlaps with the sound source distribution range.

[0028] The present application provides a sound pickup module that, during the sound pickup operation, after the omnidirectional microphone picks up the sound of the surrounding environment, the control unit determines the distribution range of the sound source according to the size of the sound picked up by different omnidirectional microphones, and controls the driving component to drive the directional microphone component to rotate accordingly, so that the sound collection range of the directional microphone component at least partially overlaps with the sound source distribution range, so that the directional microphone component can receive the sound within the sound source range; in this way, the directional microphone component can automatically adjust the sound collection direction with the assistance of the omnidirectional microphone and the control unit, so that the directional microphone component can pick up sounds from different directions while avoiding excessive manual assistance, thereby taking into account both easy operation and better sound pickup effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0030] Figure 1 A front view of a voice recorder provided in an embodiment of the present application;

[0031] Figure 2 for Figure 1 A top view of the voice recorder shown;

[0032] Figure 3 for Figure 2 A partial schematic diagram of the recording pen after being cut along the AA direction;

[0033] Figure 4 A schematic diagram of the relative positions of a voice recorder and a sound source provided in an embodiment of the present application;

[0034] Figure 5 Schematic diagram of the sound receiving angle of the directional microphone when the sound is emitted from the sound source position c;

[0035] Figure 6 This is a schematic diagram of the sound receiving angle of the directional microphone when the sound source positions b, c, and d are sounding;

[0036] Figure 7 Schematic diagram of the sound receiving angle of the directional microphone when the sound source positions are a, b, c, d, and e;

[0037] Figure 8 The figure shows a workflow diagram of adjusting a sound pickup module provided in an embodiment of the present application.

[0038] exist Figure 1-Figure 7 middle:

[0039] 1- omnidirectional microphone, 2- upper cover, 3- lower cover, 4- steering bracket, 5- middle frame, 6- first transmission gear, 7- second transmission gear, 8- worm, 9- worm gear, 10- directional microphone, 11- driving motor, 12- chip, 13- mainboard;

[0040] 401 - first steering bracket, 402 - second steering bracket, 403 - tooth portion, 404 - mesh cover. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] The sound pickup module provided in the embodiment of the present application is suitable for scenarios where a microphone is required to pick up external sounds, such as a voice recorder and a monitoring system.

[0043] like Figure 1-Figure 7 As shown, the sound pickup module in the embodiment of the present application includes a base, an omnidirectional microphone 1, a directional microphone assembly and a driving assembly.

[0044] The base is a carrier for carrying other structural parts in the sound pickup module. For example, in a specific implementation, the base can be the shell of a recording pen, etc. A control unit is provided on the base, which is the control center of the sound pickup module and is used to realize communication coordination and intelligent control of the sound pickup module, etc. In an exemplary embodiment, Figure 3 As shown, the control unit includes a main board 13, and the main board 13 is provided with a chip 12 capable of receiving information and issuing control instructions.

[0045] There are multiple omnidirectional microphones 1, and the multiple omnidirectional microphones 1 are dispersedly arranged on the substrate, and all the omnidirectional microphones 1 are signal-connected to the control unit so that the omnidirectional microphone 1 can transmit sound source information to the control unit. It should be noted that the above-mentioned sound source information specifically refers to the distribution range of the sound source. In the specific implementation process, multiple omnidirectional microphones 1 pick up sounds in the surrounding environment at the same time. Since the omnidirectional microphones 1 are dispersedly distributed, different omnidirectional microphones 1 are at different distances from the sound source, and thus the sizes of sounds picked up by different microphones are different. In this way, the control unit can determine the distribution range of the sound source according to the size of the sound picked up by the omnidirectional microphone 1.

[0046] The directional microphone assembly is rotatably disposed on the base. It should be noted that, compared with the omnidirectional microphone 1 , although the directional microphone 10 has a limited sound pickup range, the sound pickup effect of the directional microphone 10 is better than that of the omnidirectional microphone 1 in a specific direction.

[0047] The driving component is arranged on the base, and the driving component is a structure in the pickup module for driving the directional microphone component to rotate, that is, the driving component is transmission-connected to the directional microphone component, and the driving component is control-connected to the control unit so that the rotation of the directional microphone component can be controlled by the control unit.

[0048] When the above-mentioned sound pickup module is used for sound pickup, after the omnidirectional microphone 1 picks up the sound of the surrounding environment, the control unit determines the distribution range of the sound source according to the size of the sound picked up by different omnidirectional microphones 1, and controls the driving component to drive the directional microphone component to rotate accordingly, so that the sound receiving range of the directional microphone component at least partially overlaps with the sound source distribution range, thereby enabling the directional microphone component to receive the sound within the sound source range, that is, the control unit in the embodiment of the present application can control the rotation of the directional microphone component according to the sound source information provided by the omnidirectional microphone 1, so that the directional microphone component can receive the sound emitted by the sound source.

[0049] As mentioned above, the directional microphone component in the sound pickup module in the present application can automatically adjust the sound pickup direction with the assistance of the omnidirectional microphone 1 and the control unit, so that the directional microphone component can pick up sounds from different directions while avoiding excessive manual assistance, thereby taking into account both easy operation and better sound pickup effect.

[0050] It should be noted that when the distribution range of the sound source in the sound pickup scene is wide, such as in a meeting application scenario, the directional microphone assembly can be continuously adjusted so that the directional microphone assembly is always facing the sound source, thereby effectively picking up the sound.

[0051] Furthermore, the microphone assembly can be provided to include multiple directional microphones 10 that can face different directions. In this way, when the sound source distribution range is wide, different directional microphones 10 can be made to face different directions, so that the sound pickup module can receive sounds from different directions at the same time, thereby ensuring the sound pickup effect; when the sound source distribution range is narrow, multiple different directional microphones 10 are all facing the sound source, so that the sound can be received by multiple different directional microphones 10 at the same time, thereby effectively improving the sound pickup effect.

[0052] Exemplarily, for ease of understanding, the above solution is described in detail below by taking the directional microphone assembly including two groups of directional microphones 10 as an example.

[0053] Specifically, the directional microphone assembly includes a steering bracket 4 and a directional microphone 10, wherein the steering bracket 4 includes a first steering bracket 401 and a second steering bracket 402 that are mirror-arranged, the first steering bracket 401 and the second steering bracket 402 are both rotatably arranged on a base, and the first steering bracket 401 and the second steering bracket 402 are both transmission-connected to the driving assembly; a plurality of directional microphones 10 are arranged and divided into two groups, and the two groups of directional microphones 10 are respectively fixed to the first steering bracket 401 and the second steering bracket 402.

[0054] During the operation of the above-mentioned sound pickup module, the control unit determines the distribution range of the sound source according to the size of the sound received by different omnidirectional microphones 1, and then adjusts the angle between the first steering bracket 401 and the second steering bracket 402 according to the distribution range of the above-mentioned sound source, so that the directional microphone 10 can receive the sound emitted by the above-mentioned sound source and improve the sound reception effect as much as possible.

[0055] The control unit adjusts the angle between the first steering bracket 401 and the second steering bracket 402 according to the distribution range of the sound source. Figure 4-Figure 7 , specifically, Figure 4 The distribution of sound sources is shown as an example. Figure 5-Figure 7 The sound source is shown in Figure 4 The angle between the first steering bracket 401 and the second steering bracket 402 at different positions in the Figure 4 and Figure 5 As shown, when only the sound source position c emits sound, that is, when the sound pickup module is used in the application scenario of a personal interview, the first steering bracket 401 and the second steering bracket 402 both turn to position c. At this time, the directional microphone 10 in the first steering bracket 401 and the directional microphone 10 in the second steering bracket 402 focus on collecting the sound from position c. Figure 4 and Figure 6As shown, when the sound source positions b, c, and d make sounds, that is, when the sound pickup module is used to pick up sounds in the scene of a press conference, the first steering bracket 401 and the second steering bracket 402 face different directions, and because the distribution range of the sound source is relatively small, there is a smaller angle between the first steering bracket 401 and the second steering bracket 402, and the directional microphone 10 in the first steering bracket 401 and the directional microphone 10 in the second steering bracket 402 are both facing the distribution range of the above-mentioned sound source (that is, the directional microphone 10 in the first steering bracket 401 and the directional microphone 10 in the second steering bracket 402 are both facing the arc area formed by the line connecting the sound source positions b, c, and d), to ensure that the sound emitted from the above-mentioned sound source positions can be picked up by the directional microphone 10 in the first steering bracket 401 and / or the directional microphone 10 in the second steering bracket 402, thereby ensuring the sound pickup effect. Figure 4 and Figure 7 As shown, when the sound source positions a, b, c, d, and e make sounds, that is, when the sound pickup module is used to pick up sounds in a meeting scene, the first steering bracket 401 and the second steering bracket 402 face different directions, and since the distribution range of the sound source is relatively large, there is a larger angle between the first steering bracket 401 and the second steering bracket 402, and the directional microphone 10 in the first steering bracket 401 and the directional microphone 10 in the second steering bracket 402 are both facing the distribution range of the above-mentioned sound source (that is, the directional microphone 10 in the first steering bracket 401 and the directional microphone 10 in the second steering bracket 402 are both facing the arc area formed by the connecting line of the sound source positions a, b, c, d, and e) to ensure that the sounds emitted from the above-mentioned sound source positions can be picked up by the directional microphone 10 in the first steering bracket 401 and / or the directional microphone 10 in the second steering bracket 402, thereby ensuring the sound pickup effect.

[0056] On the basis that the directional microphone assembly includes the first steering bracket 401 and the second steering bracket 402, in a preferred embodiment, the control unit can identify the direction of the sound source within a first range through multiple omnidirectional microphones 1, and the first range is the range in which the directional microphone assembly can receive sound by adjusting the angle between the first steering bracket 401 and the second steering bracket 402. In this way, it is avoided to set up invalid omnidirectional microphones 1, which is conducive to reducing costs.

[0057] Regarding the distribution of the omnidirectional microphone 1, in some specific implementations, such as Figure 1 As shown, the connection line of the multiple omnidirectional microphones 1 is in a U shape. Under this setting mode, it is more conducive for the control unit to confirm the location of the sound source or the distribution range of the sound source according to the sound receiving size of the multiple omnidirectional microphones 1. In addition, in other embodiments, the connection line of the multiple omnidirectional microphones 1 can also be in an arc shape.

[0058] In some embodiments, the driving assembly includes a driving motor 11 and a transmission assembly, wherein the transmission assembly is a gear transmission group; specifically, the transmission gear group includes a first transmission gear 6 and a second transmission gear 7 both of which are transmission-connected to the driving motor 11, and the first transmission gear 6 is transmission-connected to the first steering bracket 401, and the second transmission gear 7 is transmission-connected to the second steering bracket 402. After the control unit determines the distribution range of the sound source according to the sound source information provided by the omnidirectional microphone 1, it controls the driving motor 11 to start, and then rotates the first steering bracket 401 and the second steering bracket 402 through the first transmission gear 6 and the second transmission gear 7, respectively, to adjust the angle between the first steering bracket 401 and the second steering bracket 402.

[0059] The driving assembly in the above embodiment can simultaneously drive the first steering bracket 401 and the second steering bracket 402 to rotate using one driving motor 11, thereby effectively simplifying the driving structure of the sound pickup module and further reducing the equipment cost.

[0060] Of course, in a specific implementation, two driving motors 11 may also be provided to respectively drive the first steering bracket 401 and the second steering bracket 402 to rotate.

[0061] In some embodiments, the directional microphone assembly rotates in the first plane, that is, the first steering bracket 401 and the second steering bracket 402 rotate in the first plane; the drive motor 11 and the transmission gear set are driven by the worm gear 9 and the worm 8, so that the extension direction of the output shaft of the drive motor 11 can be parallel to the first plane. Under this arrangement, it is beneficial to reduce the size of the pickup module in the direction perpendicular to the first plane, and further to reduce the thickness of the product using the pickup module.

[0062] More specifically, Figure 2 As shown, the output shaft of the driving motor 11 is connected to the worm 8, the first transmission gear 6 is rotatably arranged on the base through the first rotating shaft, the second transmission gear 7 is rotatably arranged on the base through the second rotating shaft, and is meshed and connected with the first transmission gear 6, the worm wheel 9 is arranged on the first rotating shaft or the second rotating shaft, and the worm wheel 9 is transmission connected to the worm 8, so as to realize the transmission connection between the driving motor 11 and the transmission gear group.

[0063] Furthermore, in some embodiments, the steering bracket 4 is rotatably disposed on one end of the base body and is provided with a tooth portion 403, and the tooth portion 403 is meshedly connected with both the first transmission gear 6 and the second transmission gear 7, and the other end is provided with a mesh cover 404, and the directional microphone 10 is disposed inside the mesh cover 404. The provision of the mesh cover 404 can reduce the probability of the directional microphone 10 being damaged due to factors such as impact, and at the same time, since a plurality of sound receiving holes are provided on the mesh cover 404, it will not affect the sound pickup effect of the directional microphone 10.

[0064] In addition, an embodiment of the present application also provides a voice recorder, which includes the above-mentioned sound pickup module. It should be noted that since the voice recorder includes the above-mentioned sound pickup module, the beneficial effects brought about by the sound pickup module of the voice recorder are discussed in detail above, and this application will not repeat them here.

[0065] Further, in some exemplary embodiments, Figure 2 and Figure 3 As shown, the voice recorder includes a shell, which can serve as a substrate of the above-mentioned pickup module. Specifically, the shell includes an upper cover plate 2, a lower cover plate 3 and a middle frame 5, wherein the upper cover plate 2, the lower cover plate 3 and the middle frame 5 form an installation cavity, and the control unit and the drive motor 11 in the pickup module are both arranged inside the installation cavity, so as to utilize the installation cavity to reduce the probability of damage to the control unit and the drive motor 11; the first steering bracket 401, the second steering bracket 402, the first transmission gear 6 and the second transmission gear 7 are all arranged between the upper cover plate 2 and the lower cover plate 3, and are located on the outside of the above-mentioned installation cavity, so as to avoid the middle frame 5 and other structures limiting the rotation of the first steering bracket 401 and the second steering bracket 402; the output end of the drive motor 11 passes through the middle frame 5 and is transmission-connected to the first transmission gear 6 or the second transmission gear 7, so as to realize the transmission connection between the drive motor 11 and the steering bracket 4.

[0066] In addition, an embodiment of the present application also provides a sound pickup method, which is applicable to the above-mentioned sound pickup module. It should be noted that since the sound pickup method in this embodiment includes the above-mentioned sound pickup module, the beneficial effects brought by the sound pickup module during the implementation of the sound pickup method are detailed in the above discussion, and the present application will not repeat them here.

[0067] The sound pickup method comprises the following steps:

[0068] Omnidirectional microphone 1 picks up sound;

[0069] The control unit determines the distribution range of the sound source according to the size of the sound picked up by different omnidirectional microphones 1; specifically, the chip 12 in the control unit processes the sound signal transmitted by the omnidirectional microphone 1, and then determines the distribution range of the sound source;

[0070] The control unit determines the rotation angle and rotation direction of the steering bracket 4 according to the distribution range of the sound source, so that the sound receiving range of the directional microphone 10 at least partially overlaps with the distribution range of the sound source; exemplarily, the control unit determines the rotation angle of the first steering bracket 401 and the second steering bracket 402 according to the distribution range of the sound source, and transmits the command to the drive motor 11, and the drive motor 11 drives the first steering bracket 401 and the second steering bracket 402 to rotate through the transmission gear set, so that the steering bracket 4 is directed toward the range where the sound source is located.

[0071] Furthermore, in the specific implementation process, the control unit can also adjust the direction of the directional microphone 10 group according to the movement of the sound source, specifically, Figure 8 As shown, when the sound source moves, the components in the sound pickup module repeat the above sound pickup steps under the control of the control unit, so that the direction of the directional microphone 10 is adjusted according to the movement of the sound source position under the control of the control unit, thereby ensuring the sound pickup effect.

[0072] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0073] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0074] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0075] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0076] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0077] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A sound pickup module, characterized in that: include: A base body provided with a control unit; A plurality of omnidirectional microphones are dispersedly arranged on the base and are all connected to the control unit by signal so as to transmit sound source information to the control unit; A directional microphone assembly is rotatably disposed on the base; A driving assembly is disposed on the base and is transmission-connected to the directional microphone assembly, and the driving assembly is control-connected to the control unit so that the rotation of the directional microphone assembly can be controlled by the control unit; Wherein, the control unit can control the steering of the directional microphone assembly according to the sound source information, so that the sound receiving range of the directional microphone assembly at least partially overlaps with the sound source distribution range.

2. The sound pickup module according to claim 1, characterized in that: The directional microphone assembly comprises: A steering bracket, comprising a first steering bracket and a second steering bracket which are arranged in a mirror image, wherein the first steering bracket and the second steering bracket are both rotatably arranged on the base and are drivingly connected to the driving assembly; A plurality of directional microphones are divided into two groups, and the two groups of directional microphones are respectively fixed on the first steering bracket and the second steering bracket.

3. The sound pickup module according to claim 2, characterized in that: The control unit can identify the direction of a sound source within a first range through the plurality of omnidirectional microphones. The first range is a range in which the directional microphone assembly can receive sound by adjusting the angle between the first steering bracket and the second steering bracket.

4. The sound pickup module according to claim 2, characterized in that: The drive assembly comprises: A driving motor is arranged on the base body. The transmission gear set is arranged on the base, and includes a first transmission gear and a second transmission gear, both of which are transmission-connected to the driving motor, and the first transmission gear is transmission-connected to the first steering bracket, and the second transmission gear is transmission-connected to the second steering bracket.

5. The sound pickup module according to claim 4, characterized in that: The directional microphone assembly rotates in a first plane; The driving motor and the transmission gear set are driven by a worm gear, so that the extension direction of the output shaft of the driving motor can be parallel to the first plane.

6. The sound pickup module according to claim 5, characterized in that: The first transmission gear is rotatably disposed on the base via a first rotating shaft, the second transmission gear is rotatably disposed on the base via a second rotating shaft and is meshedly connected with the first transmission gear, and the worm gear is disposed on the first rotating shaft or the second rotating shaft to realize the transmission connection between the drive motor and the transmission gear set.

7. The sound pickup module according to claim 4, characterized in that: The steering bracket is rotatably arranged at one end of the base body and is provided with a toothed portion, and the toothed portion is meshedly connected with both the first transmission gear and the second transmission gear, and the other end is provided with a mesh cover, and the directional microphone is arranged inside the mesh cover.

8. The sound pickup module according to claim 3, characterized in that: The connection line of the multiple omnidirectional microphones is U-shaped.

9. A recording pen, characterized in that: It comprises the sound pickup module as described in any one of claims 1 to 8.

10. A sound pickup method, characterized in that: Applicable to the sound pickup module according to any one of claims 1 to 8, the sound pickup method comprises the following steps: Omnidirectional microphone picks up sound; The control unit determines the distribution range of the sound source according to the size of the sound picked up by the different omnidirectional microphones; The control unit controls the steering bracket to rotate according to the sound source distribution range, so that the sound receiving range of the directional microphone assembly at least partially overlaps with the sound source distribution range.

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