Microphone array test equipment

Abstract

The utility model relates to the technical field of microphone array testing, and discloses microphone array testing equipment which comprises a supporting assembly, the supporting assembly comprises four supporting legs, connecting rods and a track, every two supporting legs are connected through the connecting rods, the tops of the two supporting legs are connected with the track, a clamping and fixing assembly is installed between the two supporting legs, and the clamping and fixing assembly is connected with the track. And a test mounting rack is arranged on the outer side of the clamping and fixing assembly. The output end of the motor drives the friction wheel to rotate, friction force is generated between the friction wheel and the upper surface of the track to drive the outer ring body to move, the clamping plate is arranged so that when the outer ring body deflects, the motor and the base do not deflect along with the outer ring body, the motor and the base move along the track, and in the moving process, the friction force is generated between the friction wheel and the track. When the gear is engaged with the teeth, the gear drives the outer ring body to rotate through the circular shaft, and the middle parts of the track and the bent plate protrude upwards to form a height difference, so that the microphone array is tested at different heights.

Description

Technical Field

[0001] The utility model relates to the technical field of microphone array testing equipment, in particular to a microphone array testing equipment. Background Art

[0002] With the continuous development of science and technology and the continuous improvement of people's living standards, smart home products have gradually entered people's lives. As the control entrance of smart homes, the microphone array is an important component of smart speakers for human-computer interaction.

[0003] The application number is 201711474399.7, which discloses a smart speaker and microphone array test equipment. The main board of the smart speaker is provided with multiple connectors, a central processor and an audio processor, each connector is used to connect an external microphone array of a type, the central processor is burned with audio transmission software, and the audio processor is burned with audio processing software; the multiple connectors on the main board are respectively connected to the audio processor, and the audio processor is connected to the central processor; the audio signals collected by the microphone arrays of various types are connected through the multiple connectors and sent to the audio processor, and the audio processor performs audio processing and sends it to the host computer through the central processor, so that the host computer analyzes and processes the audio signals collected by the microphone arrays of various types, thereby determining the microphone array with the best acoustic performance. The utility model can meet the test requirements of microphone arrays of different types and numbers, and can reduce the risks brought by the evaluation scheme.

[0004] Although such a setup can meet the testing requirements of microphone arrays of different types and numbers and can reduce the risks brought by the evaluation scheme, it is sometimes necessary to test the performance of the microphone array under different environmental conditions, such as noisy environments, echo environments or wind noise, etc., and some multi-sound source scenarios. This may require simulating different environmental conditions at different heights and angles for testing. Utility Model Content

[0005] The purpose of the utility model is to provide a microphone array testing device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a microphone array test device, comprising a support assembly, wherein the support assembly comprises legs, a connecting rod and a track, wherein four legs are provided, and every two legs are connected by a connecting rod, and the tops of the two legs are connected with a track;

[0008] A clamping and fixing assembly is installed between the two legs, and a test mounting frame is arranged on the outer side of the clamping and fixing assembly;

[0009] The upper surfaces of the two connecting rods are respectively provided with elastic adjustment frames;

[0010] A track frame is installed on the top of the two legs, and the two sides of the test mounting frame are placed above the track frame, and the track frame limits the placement of the test mounting frame.

[0011] Furthermore, the clamping and fixing assembly includes a motor and a base, the motor is mounted on the upper surface of the base, a clamping plate is fixedly connected to the outer wall of the base, and one end of the clamping plate is clamped inside the track;

[0012] A friction wheel is installed at the output end of the motor, and the friction wheel contacts the upper surface of the track;

[0013] The purpose of this setting is to drive the friction wheel to rotate through the output end of the motor, and the friction wheel generates friction with the upper surface of the track to drive the outer ring body to move. The clamping plate is set so that when the outer ring body deflects, the motor and the base do not deflect with it, and the motor and the base move along the track.

[0014] Furthermore, the clamping and fixing assembly comprises an outer ring body, and circular shafts are connected to both sides of the outer ring body, the circular shafts are slidably connected to the track, and the circular shafts are rotatably connected to the outer wall of the base;

[0015] The purpose of this arrangement is that the two circular shafts support the outer ring body, allowing the outer ring body to move between the two tracks. At the same time, when the outer ring body needs to rotate, the two circular shafts rotate inside the tracks.

[0016] Furthermore, the outer ring body is far away from the motor side of the circular shaft, one end of the circular shaft is fixedly connected to a gear, the outer wall of the track close to the gear is connected to a curved plate, the middle part of the curved plate is provided with teeth, the gear and the teeth are meshed with each other, and the middle parts of the track and the curved plate are both protruding upwards;

[0017] The purpose of this setting is that when the gears are meshing with each other, the gears drive the outer ring to rotate through the circular shaft. The middle parts of the track and the curved plate protrude upward to form a height difference, allowing the microphone array to be tested at different heights.

[0018] Furthermore, an inner ring body is rotatably connected to the inner wall of the outer ring body, two fixing blocks are inserted in the middle of the inner ring body, and a round block is connected between the two fixing blocks;

[0019] The purpose of this arrangement is that the inner ring body can rotate to adjust the angle of the clamped microphone, so as to test it at different angles. The plug-in arrangement is to facilitate the removal of the inner ring body.

[0020] Please refer to the figures and the figures, a movable groove is provided inside the round block, a second spring is installed inside the movable groove, a clamping block is provided outside the round block, one end of the clamping block is slidably connected to the inside of the movable groove, and a clamping groove is provided on the outer wall of the clamping block;

[0021] The clamping block and the second spring form a clamping structure on the round block, and the clamping structure is arranged in a ring shape on one outer wall of the round block and is arranged symmetrically on the outer wall of the other side of the round block;

[0022] The purpose of such arrangement is that the microphone array is mainly divided into a linear array and a circular array, and the above corresponding structural arrangement is used to meet the clamping requirements of the two conventional arrays.

[0023] Furthermore, the clamping and fixing assembly further comprises a position-limiting and fixing structure, an annular groove is provided on the outer wall of the outer ring body, the position-limiting and fixing structure limits and fixes the inner ring body through the annular groove, the position-limiting and fixing structure comprises two circular plates, a third spring and a fixing rod, the fixing rod is connected to the outer sliding block of the inner ring body through the annular groove, one of the circular plates is fixedly connected to the end of the fixing rod away from the sliding block, the other circular plate is slidably connected to the outer wall of the fixing rod, the third spring is sleeved on the outer side of the fixing rod and is located between the two circular plates;

[0024] The purpose of this arrangement is that when the inner ring body needs to be rotated and adjusted, slide two of the circular plates with both hands and squeeze the third spring, and rotate the inner ring body. After adjustment, release both hands, and the third spring supports the circular plate, increasing the friction between the circular plate and the outer wall of the outer ring body, thereby fixing the outer ring body and the inner ring body.

[0025] Further, the track frame includes an inclined slot frame and a fixed column, the inclined slot frame is connected to the top of the two legs, the middle part of the inclined slot frame is raised, the middle part of the inclined slot frame is inclined toward the top of the legs, and a plurality of the fixed columns are fixedly connected to the outer wall of the inclined slot frame;

[0026] The purpose of this setting is to provide a stationary placement for the test mount.

[0027] Furthermore, the test mounting frame between the two track frames comprises a placement block, the placement block is placed in the slot of the inclined slot frame, the top of the placement block is connected to a limit rod, the limit rod is between the two fixed columns, the top of the placement block is rotatably connected to a second connecting rod, a bracket is installed between the two second connecting rods, and test rings are respectively connected to the outer walls of both sides of the bracket, the test rings extend to the outside of the clamping and fixing assembly, and a through hole is opened on the inner wall of the test ring, and the through hole extends to one side of the clamping and fixing assembly;

[0028] The purpose of this setting is that during use, the test module is installed on the test ring, and the microphone is sound tested through the through hole. After the test is completed, the test mounting frame is removed, the microphone is clamped by the clamping fixing assembly, and the surface is cleaned by the elastic adjustment frame. After cleaning, the test mounting frame is placed between the two track frames again, and the microphone is tested again, so as to compare the two sets of data and find out the degree of influence of dust on the microphone surface on the test.

[0029] Furthermore, the elastic adjustment frame includes a sliding groove frame, the sliding groove frame is fixedly connected to the upper surface of the connecting rod, a first spring is installed inside the sliding groove frame, a connecting rod is slidably connected to the inner wall of the sliding groove frame, the connecting rod is above the first spring, an arc-shaped mounting plate is connected between the two connecting rods, a plurality of roller brushes are rotatably connected inside the arc-shaped mounting plate, and the other elastic adjustment frame is installed on the top of the two connecting rods. The purpose of such a setting is that when the gear and the teeth are meshed with each other, the gear drives the outer ring body to rotate through the circular shaft, and when the clamped microphone is rotated, when the middle part of the track and the curved plate both protrude upward to the highest point, the outer ring body, the inner ring body and the clamped microphone are in a horizontal state and are located between the two elastic adjustment frames at the same time. The arc-shaped mounting plate is convenient for the outer ring body, the inner ring body and the clamped microphone to pass through, and a plurality of roller brushes scrape off dust on their surfaces when passing through.

[0030] The utility model has the following beneficial effects:

[0031] (1) The utility model adopts the setting of clamping fixing components and tracks, and the microphone array is mainly divided into a linear array and a circular array. A clamping structure is formed on the circular block by a clamping block and a second spring. The clamping structure is arranged in a ring shape on one of the outer walls of the circular block and symmetrically arranged on the outer wall of the other side of the circular block to meet the clamping requirements of two conventional arrays. When the angle of the inner ring body needs to be adjusted, two circular plates are slid with both hands and the third spring is squeezed, and the inner ring body is rotated. After adjustment, the hands are released, and the third spring supports the circular plate, increasing the friction between the circular plate and the outer wall of the outer ring body, thereby fixing and limiting the outer ring body and the inner ring body;

[0032] The friction wheel is driven to rotate through the output end of the motor, and the friction wheel generates friction with the upper surface of the track to drive the outer ring body to move. The clamping plate is provided so that when the outer ring body deflects, the motor and the base do not deflect with it. The motor and the base move along the track. During the movement, when the gears and teeth engage with each other, the gears drive the outer ring body to rotate through the circular shaft. The middle parts of the track and the curved plate protrude upward to form a height difference, so that the microphone array can be tested at different heights.

[0033] (2) According to the configuration of the utility model, when the gears mesh with the teeth, the gears drive the outer ring body to rotate through the circular shaft, and when the clamped microphone is rotated, when the middle of the track and the curved plate both protrude upward to the highest point, the outer ring body, the inner ring body and the clamped microphone are in a horizontal state and are located between two elastic adjustment frames. The arc-shaped mounting plate facilitates the passage of the outer ring body, the inner ring body and the clamped microphone, and a number of roller brushes scrape off dust on their surfaces when they pass through.

[0034] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0037] Figure 2 This is a schematic diagram of the clamping structure of the utility model;

[0038] Figure 3 This is a schematic diagram of the clamping structure of the utility model;

[0039] Figure 4 This is a schematic diagram of the clamping structure of the utility model;

[0040] Figure 5 This is a schematic diagram of the track frame structure of the utility model;

[0041] Figure 6 This is a schematic diagram of the structure of the test mounting frame of the utility model;

[0042] Figure 7 This is a schematic diagram of the clamping structure of the utility model;

[0043] Figure 8 This is a schematic diagram of the curved plate and tooth structure of the utility model;

[0044] Fig. 9 This is a schematic diagram of the structure of the elastic adjustment frame of the utility model;

[0045] Fig.10 This is a schematic diagram of the structure of the elastic adjustment frame of the utility model;

[0046] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0047] In the figure: 1, support assembly; 101, support leg; 102, connecting rod; 103, track; 2, clamping and fixing assembly; 200, outer ring body; 201, motor; 202, friction wheel; 203, base; 204, round shaft; 205, gear; 206, inner ring body; 207, round block; 208, fixing block; 209, limit fixing structure; 210, second spring; 211, clamping block; 212, slot; 213, snap-in plate; 3, test mounting frame; 301, placement block; 302, second connecting rod; 303, limit rod; 304, bracket; 305, test ring; 4, elastic adjustment frame; 401, sliding slot frame; 402, first spring; 403, connecting rod; 404, arc-shaped mounting plate; 405, roller brush; 5, track frame; 501, inclined slot frame; 502, fixed column; 6, curved plate; 7, teeth. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] See also Figure 1 - Fig.10 As shown, the utility model is a microphone array test device, including a support assembly 1, the support assembly 1 includes a leg 101, a connecting rod 102 and a track 103, four legs 101 are provided, every two legs 101 are connected by a connecting rod 102, and the tops of the two legs 101 are connected with a track 103;

[0050] A clamping and fixing assembly 2 is installed between the two legs 101, and a test mounting frame 3 is arranged outside the clamping and fixing assembly 2;

[0051] The upper surfaces of the two connecting rods 102 are respectively provided with elastic adjustment brackets 4;

[0052] A track frame 5 is installed on the top of the two legs 101 , and two sides of the test mounting frame 3 are placed above the track frame 5 , and the track frame 5 limits the placement of the test mounting frame 3 .

[0053] See also Figure 7 As shown, the clamping and fixing assembly 2 includes a motor 201 and a base 203. The motor 201 is mounted on the upper surface of the base 203. A clamping plate 213 is fixedly connected to the outer wall of the base 203. One end of the clamping plate 213 is clamped inside the track 103.

[0054] The output end of the motor 201 is provided with a friction wheel 202 , and the friction wheel 202 is in contact with the upper surface of the track 103 ;

[0055] The purpose of this arrangement is to drive the friction wheel 202 to rotate through the output end of the motor 201, and the friction wheel 202 generates friction with the upper surface of the track 103, driving the outer ring body 200 to move. The clamping plate 213 is arranged so that when the outer ring body 200 deflects, the motor 201 and the base 203 do not deflect with it, and the motor 201 and the base 203 move along the track 103.

[0056] See also Figure 7 As shown, the clamping and fixing assembly 2 includes an outer ring body 200, and circular shafts 204 are connected to both sides of the outer ring body 200. The circular shafts 204 are slidably connected to the track 103, and the circular shafts 204 are rotatably connected to the outer wall of the base 203;

[0057] The purpose of such arrangement is that the two circular shafts 204 support the outer ring body 200 so that the outer ring body 200 can move between the two tracks 103 . At the same time, when the outer ring body 200 needs to rotate, the two circular shafts 204 rotate inside the track 103 .

[0058] See also Figure 7 and Figure 8 As shown, the outer ring body 200 is far away from the motor 201, and one end of the circular shaft 204 is fixedly connected to a gear 205. A curved plate 6 is connected to the outer wall of the track 103 near the gear 205. The middle of the curved plate 6 is provided with teeth 7. The gear 205 and the teeth 7 are meshed with each other. The middle of the track 103 and the curved plate 6 are both protruding upwards.

[0059] The purpose of this arrangement is that when the gear 205 is meshed with the teeth 7, the gear 205 drives the outer ring body 200 to rotate through the circular shaft 204. The middle parts of the track 103 and the curved plate 6 are protruded upward to form a height difference, allowing the microphone array to be tested at different heights.

[0060] See also Figure 2 and Figure 3 As shown, an inner ring body 206 is rotatably connected to the inner wall of the outer ring body 200, two fixing blocks 208 are inserted in the middle of the inner ring body 206, and a round block 207 is connected between the two fixing blocks 208;

[0061] The purpose of such a setting is that the inner ring body 206 can be rotated to adjust the angle of the clamped microphone, so as to test it at different angles. The plug-in setting is to facilitate the removal of the inner ring body 206.

[0062] See also Figure 2 and Figure 3As shown, a moving groove is provided inside the round block 207, and a second spring 210 is installed inside the moving groove. A clamping block 211 is provided outside the round block 207, and one end of the clamping block 211 is slidably connected to the inside of the moving groove. A clamping groove 212 is provided on the outer wall of the clamping block 211.

[0063] The clamping block 211 and the second spring 210 form a clamping structure on the round block 207. The clamping structure is arranged in a ring shape on one outer wall of the round block 207 and is arranged symmetrically on the outer wall of the other side of the round block 207.

[0064] The purpose of such arrangement is that the microphone array is mainly divided into a linear array and a circular array, and the above corresponding structural arrangement is used to meet the clamping requirements of the two conventional arrays.

[0065] See also Figure 2 and Figure 4 As shown, the clamping and fixing assembly 2 also includes a limiting fixing structure 209, an annular groove is provided on the outer wall of the outer ring body 200, and the limiting fixing structure 209 limits and fixes the inner ring body 206 through the annular groove. The limiting fixing structure 209 includes two circular plates, a third spring and a fixing rod, and the fixing rod is connected to the outer sliding block of the inner ring body 206 through the annular groove, one of the circular plates is fixedly connected to the end of the fixing rod away from the sliding block, and the other circular plate is slidably connected to the outer wall of the fixing rod, and the third spring is sleeved on the outer side of the fixing rod and is located between the two circular plates;

[0066] The purpose of this arrangement is that when the inner ring body 206 needs to be rotated and adjusted, both hands slide two of the circular plates and squeeze the third spring, and rotate the inner ring body 206. After adjustment, release both hands, and the third spring supports the circular plate, increasing the friction between the circular plate and the outer wall of the outer ring body 200, thereby fixing the outer ring body 200 and the inner ring body 206.

[0067] See also Figure 5 As shown, the track frame 5 includes an inclined slot frame 501 and fixed columns 502. The inclined slot frame 501 is connected to the top of the two legs 101. The middle part of the inclined slot frame 501 is raised, and the middle part of the inclined slot frame 501 is inclined toward the top of the legs 101. A plurality of fixed columns 502 are fixedly connected to the outer wall of the inclined slot frame 501.

[0068] The purpose of such arrangement is to provide a stationary placement for the test mounting frame 3 .

[0069] See also Figure 5 and Figure 6As shown, the test mounting frame 3 between the two track frames 5 includes a placement block 301, the placement block 301 is placed in the slot of the inclined slot frame 501, the top of the placement block 301 is connected to a limit rod 303, the limit rod 303 is between the two fixed columns 502, the top of the placement block 301 is rotatably connected to a second connecting rod 302, a bracket 304 is installed between the two second connecting rods 302, and test rings 305 are respectively connected to the outer walls of both sides of the bracket 304, the test ring 305 extends to the outside of the clamping and fixing component 2, and a through hole is opened on the inner wall of the test ring 305, and the through hole extends to one side of the clamping and fixing component 2;

[0070] The purpose of this arrangement is that during use, the test ring 305 is installed with a test module, and the microphone is sound tested through the through hole. After the test is completed, the test mounting frame 3 is removed, the microphone is clamped by the clamping fixing component 2, and the surface is cleaned by the elastic adjustment frame 4. After cleaning, the test mounting frame 3 is placed between the two track frames 5 again, and the microphone is tested again, so as to compare the two sets of data and obtain the degree of influence of dust on the microphone surface on the test.

[0071] See also Figure 1 , Fig. 9 and Fig.10 As shown, the elastic adjustment frame 4 includes a sliding groove frame 401, the sliding groove frame 401 is fixedly connected to the upper surface of the connecting rod 102, a first spring 402 is installed inside the sliding groove frame 401, a connecting rod 403 is slidably connected to the inner wall of the sliding groove frame 401, the connecting rod 403 is above the first spring 402, an arc-shaped mounting plate 404 is connected between the two connecting rods 403, a plurality of roller brushes 405 are rotatably connected inside the arc-shaped mounting plate 404, and another elastic adjustment frame 4 is installed on the top of the two connecting rods 403;

[0072] The purpose of this arrangement is that when the gear 205 is meshed with the teeth 7, the gear 205 drives the outer ring body 200 to rotate through the circular shaft 204, and when the clamped microphone is rotated, when the middle of the track 103 and the curved plate 6 both protrude upward to the highest point, the outer ring body 200, the inner ring body 206 and the clamped microphone are in a horizontal state and are located between the two elastic adjustment frames 4. The arc-shaped mounting plate 404 is convenient for the outer ring body 200, the inner ring body 206 and the clamped microphone to pass through, and a number of roller brushes 405 scrape off the dust on their surfaces when passing through.

[0073] When in use, the microphone array is mainly divided into a linear array and a circular array. A clamping structure is formed on the circular block 207 by the clamping block 211 and the second spring 210. The clamping structure is arranged in a ring shape on one of the outer walls of the circular block 207 and symmetrically arranged on the outer wall of the other side of the circular block 207 to meet the clamping requirements of two conventional arrays. When the inner ring body 206 needs to be adjusted in angle, two of the circular plates are slid with both hands and the third spring is squeezed, and the inner ring body 206 is rotated. After adjustment, both hands are released, and the third spring supports the circular plate, increasing the friction between the circular plate and the outer wall of the outer ring body 200, thereby fixing and limiting the outer ring body 200 and the inner ring body 206.

[0074] The friction wheel 202 is driven to rotate by the output end of the motor 201, and the friction wheel 202 generates friction with the upper surface of the track 103, driving the outer ring body 200 to move. The setting of the clamping plate 213 is to prevent the motor 201 and the base 203 from deflecting with the outer ring body 200 when the outer ring body 200 deflects. The motor 201 and the base 203 move along the track 103. During the movement, when the gear 205 and the teeth 7 are meshed with each other, the gear 205 drives the outer ring body 200 to rotate through the circular shaft 204. The middle parts of the track 103 and the curved plate 6 are both protruding upward to form a height difference, so that the microphone array can be tested at different heights;

[0075] In this process, the test ring 305 is installed with the test module, and the microphone is tested for sound through the through hole. After the test is completed, the test mounting frame 3 is removed, the microphone is clamped by the clamping fixing component 2, and the surface is cleaned by the elastic adjustment frame 4. After cleaning, the test mounting frame 3 is placed between the two track frames 5 again, and the microphone is tested again, so as to compare the difference between the two sets of data and obtain the degree of influence of dust on the microphone surface on the test;

[0076] When the gear 205 is meshed with the teeth 7, the gear 205 drives the outer ring body 200 to rotate through the circular shaft 204. When the clamped microphone is rotated, when the middle of the track 103 and the curved plate 6 both protrude upward to the highest point, the outer ring body 200, the inner ring body 206 and the clamped microphone are in a horizontal state and are located between the two elastic adjustment frames 4. The arc-shaped mounting plate 404 is convenient for the outer ring body 200, the inner ring body 206 and the clamped microphone to pass through, and a number of roller brushes 405 scrape off the dust on their surfaces when passing through.

[0077] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A microphone array test device, characterized in that: include: A support assembly (1), the support assembly (1) comprising a support leg (101), a connecting rod (102) and a track (103), wherein four support legs (101) are provided, and every two support legs (101) are connected by a connecting rod (102), and the tops of the two support legs (101) are connected to the track (103); A clamping and fixing assembly (2) is installed between the two supporting legs (101), and a test mounting frame (3) is arranged on the outer side of the clamping and fixing assembly (2); The upper surfaces of the two connecting rods (102) are respectively provided with elastic adjustment frames (4); A track frame (5) is installed on the top of the two legs (101), and the two sides of the test installation frame (3) are placed above the track frame (5), and the track frame (5) limits the placement of the test installation frame (3).

2. A microphone array testing device according to claim 1, characterized in that: The clamping and fixing assembly (2) comprises a motor (201) and a base (203), wherein the motor (201) is mounted on the upper surface of the base (203), a clamping plate (213) is fixedly connected to the outer wall of the base (203), and one end of the clamping plate (213) is clamped inside the track (103); A friction wheel (202) is installed at the output end of the motor (201), and the friction wheel (202) is in contact with the upper surface of the track (103).

3. A microphone array testing device according to claim 2, characterized in that: The clamping and fixing assembly (2) comprises an outer ring body (200), and circular shafts (204) are connected to both sides of the outer ring body (200). The circular shafts (204) are slidably connected to the track (103), and the circular shafts (204) are rotatably connected to the outer wall of the base (203).

4. A microphone array testing device according to claim 3, characterized in that: The outer ring body (200) is provided with a circular shaft (204) on a side away from the motor (201), one end of the circular shaft (204) is fixedly connected to a gear (205), an outer wall of the track (103) on a side close to the gear (205) is connected to a curved plate (6), a tooth (7) is provided in the middle of the curved plate (6), the gear (205) and the tooth (7) are meshed with each other, and the middle parts of the track (103) and the curved plate (6) are both protruding upwards.

5. A microphone array testing device according to claim 4, characterized in that: An inner ring body (206) is rotatably connected to the inner wall of the outer ring body (200), two fixing blocks (208) are inserted in the middle of the inner ring body (206), and a round block (207) is connected between the two fixing blocks (208).

6. A microphone array testing device according to claim 5, characterized in that: A movable groove is arranged inside the circular block (207), a second spring (210) is installed inside the movable groove, a clamping block (211) is arranged outside the circular block (207), one end of the clamping block (211) is slidably connected inside the movable groove, and a clamping groove (212) is arranged on the outer wall of the clamping block (211); The clamping block (211) and the second spring (210) form a clamping structure on the round block (207). The clamping structure is arranged in a ring shape on one outer wall of the round block (207) and is arranged symmetrically on the outer wall of the other side of the round block (207).

7. A microphone array testing device according to claim 6, characterized in that: The clamping and fixing assembly (2) also includes a limiting and fixing structure (209), wherein an annular groove is provided on the outer wall of the outer ring body (200), and the limiting and fixing structure (209) limits and fixes the inner ring body (206) through the annular groove. The limiting and fixing structure (209) includes two circular plates, a third spring and a fixing rod, and the fixing rod is connected to the outer sliding block of the inner ring body (206) through the annular groove, wherein one of the circular plates is fixedly connected to the end of the fixing rod away from the sliding block, and the other circular plate is slidably connected to the outer wall of the fixing rod, and the third spring is sleeved on the outer side of the fixing rod and is located between the two circular plates.

8. The microphone array testing device according to claim 1, characterized in that: The track frame (5) comprises an inclined slot frame (501) and fixed columns (502); the inclined slot frame (501) is connected to the tops of two supporting legs (101); the middle part of the inclined slot frame (501) is raised; the middle part of the inclined slot frame (501) is inclined toward the tops of the supporting legs (101); and a plurality of fixed columns (502) are fixedly connected to the outer wall of the inclined slot frame (501).

9. The microphone array testing device according to claim 1, characterized in that: The test mounting frame (3) between the two track frames (5) comprises a placement block (301), wherein the placement block (301) is placed in a slot of an inclined slot frame (501), wherein the top of the placement block (301) is connected to a limiting rod (303), wherein the limiting rod (303) is located between two fixed columns (502), wherein the top of the placement block (301) is rotatably connected to a second connecting rod (302), wherein a bracket (304) is installed between the two second connecting rods (302), wherein test rings (305) are respectively connected to the outer walls of both sides of the bracket (304), wherein the test rings (305) extend to the outer side of the clamping and fixing component (2), wherein a through hole is provided on the inner wall of the test ring (305), wherein the through hole extends to one side of the clamping and fixing component (2).

10. The microphone array testing device according to claim 1, characterized in that: The elastic adjustment frame (4) comprises a sliding groove frame (401), the sliding groove frame (401) is fixedly connected to the upper surface of the connecting rod (102), a first spring (402) is installed inside the sliding groove frame (401), a connecting rod (403) is slidably connected to the inner wall of the sliding groove frame (401), the connecting rod (403) is located above the first spring (402), an arc-shaped mounting plate (404) is connected between the two connecting rods (403), a plurality of roller brushes (405) are rotatably connected inside the arc-shaped mounting plate (404), and another elastic adjustment frame (4) is installed on the top of the two connecting rods (403).

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