Middle-edge system type double-channel acoustic acquisition front-end device

Abstract

The invention belongs to the technical field of middle-side system type double-channel acoustic acquisition front-end devices, and discloses a middle-side system type double-channel acoustic acquisition front-end device. The middle-side system type double-channel acoustic acquisition front-end device comprises a potentiometer assembly, an adjusting assembly, an acoustic assembly and a control panel, the potentiometer assembly comprises a potentiometer and a support, the potentiometer is fixed to the support, and an eccentric part is eccentrically arranged on a rotating shaft of the potentiometer; the adjusting assembly comprises a first adjusting part, the support is sleeved with the first adjusting part, the first adjusting part can rotate relative to the axis of the support, and when the first adjusting part is rotated, the first adjusting part can abut against the eccentric part and drive the rotating shaft to rotate in the same direction; the acoustic assembly is arranged on the bracket and is in communication connection with the potentiometer; the control panel is in communication connection with the potentiometer. According to the invention, the switching of the radio mode can be realized, the operation convenience and efficiency are obviously improved, the time and labor are saved, the user experience is smooth, the operation state of the potentiometer is conveniently determined, and the requirement on the installation precision is relatively low.

Description

Technical Field

[0001] This invention relates to the field of acoustic acquisition front-end device technology, and in particular to a dual-channel acoustic acquisition front-end device with a mid-range standard. Background Technology

[0002] A microphone is a device used to convert sound into electrical signals, and it is an essential tool for applications such as recording and speech recognition. The microphone's pickup pattern determines its sensitivity and range in capturing sound from different directions, directly affecting the recording quality and its ability to suppress ambient noise.

[0003] Existing shotgun microphones typically feature cardioid, omnidirectional, and figure-eight pickup patterns. These modes are usually switched using a toggle switch, which the operator moves horizontally to achieve this. Furthermore, the toggle switch's location on the side or bottom of the microphone makes operation inconvenient and provides a poor user experience. Therefore, there is an urgent need for a dual-channel acoustic acquisition front-end device with a center-side configuration to solve these technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-channel acoustic acquisition front-end device with a mid-range standard, which can realize the switching of the sound reception mode, significantly improves the ease of operation and efficiency, saves time and effort, provides a smooth user experience, and makes it easy to determine the operating status of the potentiometer, with relatively low requirements for installation accuracy.

[0005] To achieve this objective, the present invention adopts the following technical solution: A dual-channel acoustic acquisition front-end device with a mid-to-side standard includes: A potentiometer assembly, comprising a potentiometer and a bracket, wherein the potentiometer is fixed to the bracket and an eccentric portion is eccentrically provided on the rotating shaft of the potentiometer; An adjustment assembly includes a first adjustment member, which is sleeved on the outside of the bracket and can rotate along the axis of the bracket. When the first adjustment member is rotated, it can abut against the eccentric part and drive the rotating shaft to rotate in the same direction. An acoustic component is disposed on the bracket, and the acoustic component is communicatively connected to the potentiometer; A control board, which is communicatively connected to the potentiometer.

[0006] In some possible implementations, the first adjusting member is provided with an adjusting cavity, the eccentric portion is located in the adjusting cavity, and when the first adjusting member is rotated, the cavity wall of the adjusting cavity can abut against the eccentric portion.

[0007] In some possible implementations, the first adjusting member includes a sleeve portion, an abutment portion, and at least one connecting portion. The sleeve portion is sleeved outside the bracket, the abutment portion is provided with the adjusting cavity, and the two ends of the connecting portion are respectively connected to the sleeve portion and the abutment portion. The bracket is provided with at least two limiting members, and the connecting portion can selectively contact two adjacent limiting members.

[0008] In some possible implementations, the outer wall of the bracket is provided with at least one set of protrusions, each set of protrusions including two protrusions arranged opposite to each other. The inner wall of the first adjusting member is provided with at least two sets of grooves, each set of grooves including two recesses arranged opposite to each other. When the first adjusting member is rotated, the set of protrusions can selectively correspond to one of the sets of grooves, and the protrusions can slide into the corresponding recesses. When the connecting part contacts one of the limiting members, the set of protrusions corresponds to one of the sets of grooves. When the connecting part contacts the other limiting member, the set of protrusions corresponds to the other set of grooves.

[0009] In some possible implementations, the groove group is provided with at least three, and when the connecting portion is located at the middle position of two adjacent limiting members along the circumference of the bracket, the protrusion group corresponds to another groove group.

[0010] In some possible implementations, the slot group has four slots, and eight of the grooves in the four slot groups are distributed at equal intervals along the circumference of the bracket, with the connecting portion disposed at the center position of two adjacent grooves along the circumference of the bracket.

[0011] In some possible implementations, the bracket is provided with at least two first through holes, each corresponding to one of the at least two limiting members. The acoustic component is provided with at least two protrusions, each corresponding to one of the at least two limiting members. Each protrusion is provided with a first connecting hole. The limiting member passes through the first through hole and is detachably connected to the first connecting hole. The connecting part can selectively contact two adjacent protrusions.

[0012] In some possible implementations, the adjustment assembly further includes a second adjustment member disposed on the first adjustment member, the outer wall of the second adjustment member having a concave-convex structure; and / or; A connector is detachably connected to the rotating shaft of the potentiometer. The connector is coaxially arranged with the rotating shaft and has an eccentric portion. The adjustment assembly also includes an abutment. The first adjustment member has a second through hole, which is sleeved on the outside of the connector. The abutment is detachably connected to the connector to abut the first adjustment member against the shaft end face of the connector.

[0013] In some possible implementations, the mid-range dual-channel acoustic acquisition front-end device further includes a first housing, and the acoustic components are disposed within the first housing.

[0014] In some possible implementations, the mid-range dual-channel acoustic acquisition front-end device further includes a second housing, a first fixing member, and a third housing. Part of the control board is located inside the second housing. The first end of the second housing is fixed to the bracket. The first fixing member is detachably connected to the second end of the second housing. The third housing is sleeved outside the second housing. The first end of the third housing axially abuts against the adjustment component, and the second end of the third housing axially abuts against the first fixing member.

[0015] The beneficial effects of this invention are: The present invention provides a dual-channel acoustic acquisition front-end device for both center and edge systems, comprising a potentiometer assembly, an adjustment assembly, an acoustic assembly, and a control board. When switching the reception modes of the dual-channel acoustic acquisition front-end device, the operator rotates the first adjustment component. This first adjustment component abuts against the eccentric portion, causing the rotating shaft to rotate in the same direction, thereby adjusting the resistance value of the potentiometer and switching between different reception modes. When switching reception modes, the operator rotates the first adjustment component along the axis of the bracket. Adjustment of the first adjustment component is convenient and can be done by feel, without needing to shift their gaze, significantly improving operational convenience and efficiency, saving time and effort, and providing a better user experience. Furthermore, the rotation direction of the first adjustment component is the same as the rotation direction of the potentiometer's shaft, facilitating the determination of the potentiometer's operating state and controlling the rotation angle, ensuring that the rotation angle of the first adjustment component matches the rotation angle of the potentiometer's shaft. In addition, during installation, simply abutting the first adjustment component against the eccentric portion is sufficient, requiring relatively low installation precision. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the dual-channel acoustic acquisition front-end device of the middle and side system provided by the present invention; Figure 2 This is an exploded view of the dual-channel acoustic acquisition front-end device of the Chinese side system provided in this invention; Figure 3 This is a schematic diagram of the structure of the potentiometer assembly, adjustment assembly, second housing, and first fixing member involved in the present invention; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 This is an exploded view of the potentiometer assembly, adjustment assembly, second housing, and first fixing member involved in this invention; Figure 6 This is a schematic diagram of the structure of the potentiometer assembly, adjustment assembly, acoustic assembly, and first housing involved in this invention; Figure 7 This is an exploded view of the potentiometer assembly, adjustment assembly, acoustic assembly, and first housing involved in the present invention.

[0017] In the picture: 1. Potentiometer assembly; 11. Potentiometer; 12. Bracket; 121. Annular positioning part; 122. Protrusion group; 1221. Protrusion; 123. First through hole; 13. Connector; 131. Eccentric part; 132. Boss; 14. Limiting part; 2. Adjustment assembly; 21. First adjusting member; 211. Adjustment cavity; 212. Sleeving part; 213. Abutting part; 214. Connecting part; 215. Groove group; 2151. Groove; 216. Second through hole; 217. First anti-rotation plane; 218. Marking groove; 22. Second adjusting member; 221. Concave-convex structure; 222. Second anti-rotation plane; 23. Abutting member; 3. Acoustic component; 31. Protrusion; 311. First connecting hole; 4. First outer shell; 5. Second outer shell; 51. Insertion interface; 6. First fastener; 7. Third outer shell; 8. Second fastener. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 7 As shown, this invention provides a mid-side dual-channel acoustic acquisition front-end device. This device can refer to a stereo microphone using the MS (Mid-Side) standard. The MS (Mid-Side) standard is a stereo sound pickup technology with two independent acoustic units, which are the aforementioned dual channels. It includes a potentiometer assembly 1, an adjustment assembly 2, an acoustic assembly 3, and a control board, as shown... Figure 4 As shown, potentiometer assembly 1 includes a potentiometer 11 and a bracket 12. The potentiometer 11 is fixed to the bracket 12. An eccentric portion 131 is eccentrically provided on the rotating shaft of the potentiometer 11, that is, the center line of the eccentric portion 131 does not coincide with the axis of the rotating shaft of the potentiometer 11. In this embodiment, the eccentric portion 131 is an eccentric shaft. Adjustment assembly 2 includes a first adjustment member 21, which is sleeved on the bracket 12 and can rotate along the axis of the bracket 12. When the first adjustment member 21 is rotated, it can abut against the eccentric portion 131 and drive the rotating shaft to rotate in the same direction, that is, the rotation direction of the rotating shaft is the same as the rotation direction of the first adjustment member 21. Acoustic assembly 3 is disposed on the bracket 12 and is communicatively connected to the potentiometer 11. Control board is communicatively connected to the potentiometer 11. Optionally, the control board includes a circuit board and a main board. The circuit board is communicatively connected to the potentiometer 11, and the main board is communicatively connected to the circuit board. Optionally, the bracket 12 is provided with an annular positioning part 121, and the first adjusting member 21 abuts against one end of the annular positioning part 121. Optionally, the acoustic component 3 and the main board are respectively located at both ends of the potentiometer component 1. Optionally, the rotating shaft of the potentiometer 11 rotates along the center line of the rotating shaft. The potentiometer 11 is a mature technology in related fields, and will not be described in detail in this embodiment.

[0023] When switching the reception modes of the dual-channel acoustic acquisition front-end device, the operator rotates the first adjusting component 21. This allows the first adjusting component 21 to abut against the eccentric part 131, causing the rotating shaft to rotate in the same direction. This adjusts the resistance of the potentiometer 11, thus switching between different reception modes. When switching reception modes, the operator rotates the first adjusting component 21 along the axis of the bracket 12. Adjusting the first adjusting component 21 is convenient and can be done by feel, without needing to shift their gaze, significantly improving operational convenience and efficiency, saving time and effort, and providing a smooth user experience. Furthermore, the rotation direction of the first adjusting component 21 is the same as the rotation direction of the potentiometer 11's shaft, making it easy to determine the operating state of the potentiometer 11 and control the rotation angle, ensuring that the rotation angle of the first adjusting component 21 matches the rotation angle of the potentiometer 11's shaft. In addition, during installation, simply abutting the first adjusting component 21 against the eccentric part 131 is sufficient, requiring relatively low installation precision.

[0024] Optionally, the first adjusting member 21 is provided with an adjusting cavity 211, and the eccentric portion 131 is located in the adjusting cavity 211. When the first adjusting member 21 is rotated, the cavity wall of the adjusting cavity 211 can abut against the eccentric portion 131. This arrangement facilitates processing, avoids interference between the first adjusting member 21 and other internal structures, and during installation, the eccentric portion 131 is simply placed in the adjusting cavity 211, and when the first adjusting member 21 is rotated, the cavity wall of the adjusting cavity 211 abuts against the eccentric portion 131, further reducing the requirements for installation accuracy. In other embodiments, the first adjusting member 21 is provided with an adjusting post. Specifically, the adjusting post is located on the outer peripheral wall of the abutment portion 213, and the adjusting post abuts against the eccentric portion 131, driving the rotating shaft to rotate in the same direction.

[0025] Optionally, in this embodiment, the first adjusting member 21 is provided with an arc-shaped groove, which serves as an adjusting cavity 211. The groove wall can abut against the eccentric portion 131. This arrangement facilitates the processing of the adjusting cavity 211 and ensures the structural strength of the first adjusting member 21. Furthermore, the abutment of the groove wall with one side of the eccentric portion 131 enables the forward rotation of the eccentric portion 131, while the abutment of the groove wall with the other side enables the reverse rotation of the eccentric portion 131, allowing for bidirectional rotation of the eccentric portion 131 and increasing the flexibility of adjusting the radio mode. Optionally, the eccentric portion 131 is cylindrical. In other embodiments, the first adjusting member 21 is provided with a circular hole at its shaft end face, extending axially along the first adjusting member 21. The eccentric portion 131 is inserted into the circular hole, enabling the first adjusting member 21 to drive the rotation of the eccentric portion 131.

[0026] Optionally, in this embodiment, the first adjusting member 21 includes a sleeve portion 212, an abutment portion 213, and at least one connecting portion 214. The sleeve portion 212 is sleeved on the outside of the bracket 12, the abutment portion 213 is provided with an adjusting cavity 211, and the two ends of the connecting portion 214 are respectively connected to the sleeve portion 212 and the abutment portion 213. At least two limiting members 14 are provided on the bracket 12, and the connecting portion 214 can selectively contact two adjacent limiting members 14. Specifically, the arc-shaped groove is located on the outer peripheral wall of the abutment portion 213. When the first adjusting member 21 rotates forward, the connecting part 214 contacts one of the limiting members 14. When the first adjusting member 21 rotates in reverse, the connecting part 214 contacts the other limiting member 14. This arrangement limits the rotation range of the first adjusting member 21. When the connecting part 214 contacts one of the limiting members 14, one radio mode can be matched. When the connecting part 214 contacts the other limiting member 14, another radio mode can be matched, thus enabling the switching of at least two radio modes.

[0027] Optionally, in this embodiment, as Figure 5 As shown, the outer wall of the bracket 12 is provided with at least one protrusion group 122, each protrusion group 122 including two protrusions 1221, which are arranged opposite to each other. The inner wall of the first adjusting member 21 is provided with at least two groove groups 215, each groove group 215 including two recesses 2151, which are arranged opposite to each other. When the first adjusting member 21 is rotated, the protrusion group 122 can selectively correspond to one of the groove groups 215, and the protrusion 1221 can slide into the corresponding recess 2151. When the connecting part 214 contacts one of the limiting members 14, the protrusion group 122 corresponds to one of the groove groups 215; when the connecting part 214 contacts the other limiting member 14, the protrusion group 122 corresponds to the other groove group 215. By matching the protrusion group 122 with the groove group 215, the user's tactile experience can be improved. When the connecting part 214 contacts one of the limiting members 14, the protrusion group 122 corresponds to one of the groove groups 215; when the connecting part 214 contacts the other limiting member 14, the protrusion group 122 corresponds to the other groove group 215. When the center-side dual-channel acoustic acquisition front-end device is in a certain sound reception mode, the protrusion group 122 corresponds to the corresponding groove group 215, and the protrusion 1221 is located in the corresponding groove 2151, which can limit the position of the first adjusting member 21 and keep the center-side dual-channel acoustic acquisition front-end device in that sound reception mode. In addition, setting the groove group 215 on the first adjusting member 21 and setting the protrusion group 122 on the bracket 12 makes it convenient for the operator to rotate the first adjusting member 21. In this embodiment, a protrusion group 122 is provided on the outer wall of the bracket 12. This setting can reduce the resistance when the first adjusting member 21 rotates, making the rotation smoother. In other embodiments, the inner wall of the first adjusting member 21 is provided with a protrusion group 122, and the outer wall of the bracket 12 is provided with a groove group 215.

[0028] Optionally, in this embodiment, at least three slot groups 215 are provided. When the connecting portion 214 is located at the middle position of two adjacent limiting members 14 along the circumference of the bracket 12, the protrusion group 122 corresponds to another slot group 215. Here, the middle position refers to other positions where the connecting portion 214 does not contact either of the two limiting members 14. With this arrangement, the center-side dual-channel acoustic acquisition front-end device can have at least three sound reception modes. When the connecting portion 214 contacts one of the limiting members 14, one sound reception mode can be matched; when the connecting portion 214 contacts another limiting member 14, another sound reception mode can be matched; when the connecting portion 214 is located at multiple positions in the middle of two adjacent limiting members 14 along the circumference of the bracket 12, multiple sound reception modes can be matched accordingly.

[0029] Optionally, in this embodiment, four slot groups 215 are provided, and eight grooves 2151 in the four slot groups 215 are evenly distributed along the circumference of the support 12. The connecting part 214 is located at the center of two adjacent grooves 2151 along the circumference of the support 12. With this configuration, the first adjusting member 21 needs to rotate 45 degrees when switching the radio mode, which can achieve accurate switching of the radio mode. Specifically, the connecting part 214 contacts one of the limiting members 14 to match one radio mode. After rotating 45 degrees, it matches another radio mode. After rotating another 45 degrees, the connecting part 214 contacts another limiting member 14 to match yet another radio mode. It should be noted that the number of slot groups 215 and the angle between two adjacent grooves 2151 can be determined according to the actual requirements for the number of radio modes and the angle that the first adjusting member 21 needs to rotate when switching the radio mode. In this embodiment, two connecting parts 214 are provided, which can improve the structural strength of the first adjusting member 21 and make the rotation smoother. Optionally, the connecting part 214 is a connecting rod.

[0030] Optionally, in this embodiment, the bracket 12 is provided with at least two first through holes 123, and the at least two first through holes 123 are correspondingly provided with at least two limiting members 14, such as... Figure 7As shown, the acoustic component 3 has at least two protrusions 31, each corresponding to at least two limiting members 14. Each protrusion 31 has a first connecting hole 311. The limiting member 14 passes through a first through hole 123 and is detachably connected to the first connecting hole 311. The connecting part 214 can selectively contact two adjacent protrusions 31. This configuration allows the acoustic component 3 to be fixed to the bracket 12, facilitating its disassembly and simplifying the installation structure required for fixing the acoustic component 3 to the bracket 12. This results in a more compact structure and improves the integration of the dual-channel acoustic acquisition front-end device. Optionally, to ensure a reliable connection between the limiting member 14 and the first connecting hole 311, the first connecting hole 311 is an internally threaded hole, and the limiting member 14 is a screw. The screw passes through the first through hole 123 and is threadedly connected to the internally threaded hole.

[0031] To facilitate the operator's rotation of the first adjusting member 21, optionally, in this embodiment, the adjusting assembly 2 further includes a second adjusting member 22, which is disposed on the first adjusting member 21, such as... Figure 5 As shown, the outer wall of the second adjusting member 22 has a concave-convex structure 221. Optionally, the second adjusting member 22 is sleeved on the first adjusting member 21. The outer wall of the first adjusting member 21 has a first anti-rotation plane 217, and the inner wall of the second adjusting member 22 has a second anti-rotation plane 222. The first anti-rotation plane 217 and the second anti-rotation plane 222 are in contact. This arrangement facilitates the disassembly or installation of the second adjusting member 22 onto the first adjusting member 21 and prevents the second adjusting member 22 from rotating relative to the first adjusting member 21. Optionally, there are two first anti-rotation planes 217, which are arranged opposite to each other, and the second anti-rotation plane 222 is arranged in a one-to-one correspondence with the first anti-rotation plane 217.

[0032] Optionally, in this embodiment, as Figure 4 As shown, the first adjusting member 21 is provided with an indicator groove 218, which is directly opposite one of the connecting parts 214. By providing the indicator groove 218, it is convenient to observe the rotational position of the connecting part 214.

[0033] Optionally, in this embodiment, as Figure 4 and Figure 5As shown, a connector 13 is detachably connected to the shaft of potentiometer 11. The connector 13 is coaxially arranged with the shaft and has an eccentric portion 131. This arrangement allows the connector 13 to be disassembled when the eccentric portion 131 is heavily worn, facilitating disassembly, assembly, and replacement of the eccentric portion 131. Optionally, in this embodiment, the adjusting assembly 2 further includes an abutment 23. The first adjusting member 21 has a second through hole 216, which is fitted over the connector 13. The abutment 23 is detachably connected to the connector 13 to abut the first adjusting member 21 against the axial end face of the connector 13. This arrangement restricts the axial position of the first adjusting member 21 on the bracket 12. Optionally, the connector 13 has a boss 132 with a second connecting hole. The second through hole 216 is fitted over the boss 132, and the abutment 23 passes through a portion of the second through hole 216 and is detachably connected to the second connecting hole. This design makes the structure compact. Optionally, the abutment 23 is a screw, which is threaded into the second connecting hole.

[0034] Optionally, in this embodiment, as Figure 2 As shown, the mid-range dual-channel acoustic acquisition front-end device also includes a first housing 4, within which the acoustic component 3 is disposed. The first housing 4 protects the acoustic component 3. Optionally, the first end of the acoustic component 3 is fitted inside the first adjusting member 21, and at least two protrusions 31 are located at the first end of the acoustic component 3. This arrangement facilitates connection between the acoustic component 3 and the potentiometer 11. Furthermore, the first end of the first housing 4 is fitted outside the first adjusting member 21.

[0035] Optionally, in this embodiment, the dual-channel acoustic acquisition front-end device further includes a second housing 5, a first fixing member 6, and a third housing 7. Part of the control board is located inside the second housing 5. Specifically, the main board is located inside the second housing 5. The first end of the second housing 5 is fixed to the bracket 12. The first fixing member 6 is detachably connected to the second end of the second housing 5. The third housing 7 is sleeved outside the second housing 5. The first end of the third housing 7 axially abuts against the adjustment component 2, and the second end of the third housing 7 axially abuts against the first fixing member 6. The third housing 7 provides protection for the second housing 5 and the main board. For example, during installation, the first end of the second housing 5 is fixed to the bracket 12, the third housing 7 is sleeved outside the second housing 5 with its first end axially abutting against the adjustment component 2, and then the first fixing member 6 is detachably connected to the second end of the second housing 5, with the second end of the third housing 7 axially abutting against the first fixing member 6. This arrangement facilitates determining the axial position of the third housing 7 and also facilitates the installation and removal of the third housing 7. Optionally, to ensure a reliable connection, the first fixing member 6 is provided with an internal threaded hole, and the second end of the second housing 5 is provided with an external thread, which is threadedly connected to the internal threaded hole.

[0036] Optionally, the first end of the second housing 5 is fitted inside the bracket 12. This arrangement facilitates connection between the motherboard and the circuit board. Optionally, to ensure a reliable connection, the mid-range dual-channel acoustic acquisition front-end device also includes a second fixing member 8, which is a screw that passes through the outer wall of the bracket 12 and is threadedly connected to the first end of the second housing 5. Optionally, the second end of the second housing 5 is provided with a connector 51 for connecting external devices to transmit audio data.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A dual-channel acoustic acquisition front-end device with a mid-range standard, characterized in that, include: Potentiometer assembly (1), the potentiometer assembly (1) includes a potentiometer (11) and a bracket (12), the potentiometer (11) is fixed to the bracket (12), and the rotating shaft of the potentiometer (11) is eccentrically provided with an eccentric part (131). Adjustment component (2), the adjustment component (2) includes a first adjustment member (21), the first adjustment member (21) is sleeved on the outside of the bracket (12) and can rotate along the axis of the bracket (12). When the first adjustment member (21) is rotated, the first adjustment member (21) can abut against the eccentric part (131) and drive the rotating shaft to rotate in the same direction; An acoustic component (3) is disposed on the bracket (12), and the acoustic component (3) is communicatively connected to the potentiometer (11); The control board is communicatively connected to the potentiometer (11).

2. The dual-channel acoustic acquisition front-end device according to claim 1, characterized in that, The first adjusting member (21) is provided with an adjusting cavity (211), and the eccentric part (131) is located in the adjusting cavity (211). When the first adjusting member (21) is rotated, the cavity wall of the adjusting cavity (211) can abut against the eccentric part (131).

3. The dual-channel acoustic acquisition front-end device according to claim 2, characterized in that, The first adjusting member (21) includes a sleeve portion (212), an abutment portion (213), and at least one connecting portion (214). The sleeve portion (212) is sleeved on the outside of the bracket (12). The abutment portion (213) is provided with the adjusting cavity (211). The two ends of the connecting portion (214) are respectively connected to the sleeve portion (212) and the abutment portion (213). At least two limiting members (14) are provided on the bracket (12). The connecting portion (214) can selectively contact two adjacent limiting members (14).

4. The dual-channel acoustic acquisition front-end device according to claim 3, characterized in that, The outer wall of the bracket (12) is provided with at least one protrusion group (122), each of the protrusion groups (122) includes two protrusions (1221), the two protrusions (1221) are arranged opposite to each other. The inner wall of the first adjusting member (21) is provided with at least two groove groups (215), each of the groove groups (215) includes two grooves (2151), the two grooves (2151) are arranged opposite to each other. When the first adjusting member (21) is rotated, the protrusion group (122) can selectively correspond to one of the groove groups (215), and the protrusion (1221) can slide into the corresponding groove (2151). When the connecting part (214) contacts one of the limiting members (14), the protrusion group (122) corresponds to one of the groove groups (215). When the connecting part (214) contacts the other limiting member (14), the protrusion group (122) corresponds to the other groove group (215).

5. The dual-channel acoustic acquisition front-end device according to claim 4, characterized in that, The groove group (215) is provided with at least three, and when the connecting part (214) is located at the middle position of two adjacent limiting members (14) along the circumference of the bracket (12), the protrusion group (122) corresponds to another groove group (215).

6. The dual-channel acoustic acquisition front-end device according to claim 5, characterized in that, The groove group (215) is provided in four places. Eight grooves (2151) in the four groove groups (215) are distributed at equal intervals along the circumference of the support (12). The connecting part (214) is located at the center of two adjacent grooves (2151) along the circumference of the support (12).

7. The dual-channel acoustic acquisition front-end device according to claim 3, characterized in that, The bracket (12) is provided with at least two first through holes (123), and the at least two first through holes (123) are respectively arranged in correspondence with at least two limiting members (14). The acoustic component (3) is provided with at least two protrusions (31), and the at least two protrusions (31) are respectively arranged in correspondence with at least two limiting members (14). The protrusions (31) are provided with first connecting holes (311). The limiting members (14) pass through the first through holes (123) and are detachably connected to the first connecting holes (311). The connecting part (214) can selectively contact two adjacent protrusions (31).

8. The dual-channel acoustic acquisition front-end device according to claim 1, characterized in that, The adjustment assembly (2) further includes a second adjustment member (22), which is disposed on the first adjustment member (21), and the outer wall of the second adjustment member (22) is provided with a concave-convex structure (221); and / or; A connector (13) is detachably connected to the rotating shaft of the potentiometer (11). The connector (13) is coaxially arranged with the rotating shaft and has an eccentric portion (131). The adjustment assembly (2) also includes an abutment (23). The first adjustment component (21) has a second through hole (216). The second through hole (216) is sleeved on the outside of the connector (13). The abutment (23) is detachably connected to the connector (13) so that the first adjustment component (21) abuts against the shaft end face of the connector (13).

9. The dual-channel acoustic acquisition front-end device according to any one of claims 1-8, characterized in that, The mid-range dual-channel acoustic acquisition front-end device also includes a first housing (4), and the acoustic component (3) is disposed inside the first housing (4).

10. The mid-side dual-channel acoustic acquisition front-end apparatus according to any one of claims 1-8, wherein, The mid-side dual-channel acoustic acquisition front-end device further includes a second housing (5), a first fixing member (6), and a third housing (7). Part of the control board is located inside the second housing (5). The first end of the second housing (5) is fixed to the bracket (12). The first fixing member (6) is detachably connected to the second end of the second housing (5). The third housing (7) is sleeved outside the second housing (5). The first end of the third housing (7) axially abuts against the adjustment component (2), and the second end of the third housing (7) axially abuts against the first fixing member (6).

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