Sound leakage detection device and sound leakage detection system

Abstract

The invention provides a sound leakage detection device and a sound leakage detection system, and belongs to the technical field of sound detection equipment. The sound leakage detection device comprises a supporting base, a rotary table, a supporting table and a mounting support, and the supporting base comprises a base body and an external expansion support extending in the circumferential direction of the base body; the rotary table is rotationally connected with the base body, at least part of the rotary table is connected with the external expansion support, and the rotary table is configured to rotate relative to the base body in the extending direction of the external expansion support; the supporting table is fixedly arranged on the base body, the height of the supporting table is adjustable, and the supporting table is used for installing a sound source part to be tested; the mounting bracket is arranged at the upper part of the rotary table, a plurality of sound pickups are mounted on the mounting bracket at intervals, and the sound pickups are used for detecting sound pressure signals of the sound source part to be detected. According to the sound leakage detection device provided by the invention, the flexibility and the degree of freedom of the device can be improved, and sound pressure signals in all directions can be conveniently acquired, so that the accuracy of sound leakage detection can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of sound detection equipment, and in particular to a sound leakage detection device and a sound leakage detection system. Background Art

[0002] Wearable products are all equipped with an acoustic system for playing audio, and the acoustic system needs to be tested for sound leakage before leaving the factory.

[0003] In the related art, the equipment used to detect whether a wearable product leaks sound generally has multiple arc-shaped microphone arrays, which use the microphones to detect whether there is sound leakage at a certain position of the sound source. However, the detection position of the microphone relative to the sound source is relatively single, and there are loopholes in the detection of certain specific areas, which has great limitations and affects the detection effect and accuracy of the equipment. Summary of the invention

[0004] The present application provides a sound leakage detection device and a sound leakage detection system, which are used to solve the problem in the related art that the single detection position of the sound leakage detection device affects the precision and accuracy.

[0005] In one aspect, the present application provides a sound leakage detection device, comprising:

[0006] A support base, comprising a base body and an outward expansion bracket extending along the circumference of the base body;

[0007] A turntable, rotatably connected to the base body, at least a portion of the turntable is connected to the outward-expanding bracket, and the turntable is configured to rotate relative to the base body along an extension direction of the outward-expanding bracket;

[0008] A support platform, fixedly mounted on the base body, the height of the support platform is adjustable, and the support platform is used to install the sound source component to be tested;

[0009] The mounting bracket is arranged on the upper part of the turntable. A plurality of pickups are installed on the mounting bracket at intervals. The pickups are used to detect the sound pressure signal of the sound source component to be tested.

[0010] In a possible implementation, the turntable includes a rotating member and a supporting column disposed on the rotating member, the mounting bracket is disposed on the supporting column, one end of the rotating member is rotatably connected to the base body, and the other end is overlapped with the outward extension bracket.

[0011] In a possible implementation manner, the support column is slidably connected to the rotating member, and the support column is configured to be displaced on the rotating member along a radial direction of the outward-expanding stent.

[0012] In a possible implementation, the height of the support column is adjustable, a first rotating disk is provided on the upper portion of the support column, a plane where the rotating disk is located is perpendicular to the axial direction of the rotating member, and the mounting bracket is rotatably connected to the support column via the rotating disk.

[0013] In a possible implementation, the support platform includes a height-adjusting bracket connected to the base body, and a second rotating disk is provided on the height-adjusting bracket. The second rotating disk is used to support the sound source component to be measured.

[0014] In a possible implementation, the bottom of the height-adjusting bracket is slidably connected to the base body, and the height-adjusting bracket is configured to be displaced on the base body along a radial direction of the outward-expanding bracket.

[0015] In a possible implementation manner, the mounting bracket is an arc-shaped bracket, and the plurality of pickups are evenly arranged along the circumferential direction of the mounting bracket;

[0016] A test dummy is fixed on the support platform, the sound source component to be tested is installed on the ear of the test dummy, and the sound source component to be tested is located at the center of the circle of the mounting bracket.

[0017] In a possible implementation, the outward expansion stent is a semicircular arc stent.

[0018] In a possible implementation manner, a reinforcing connecting rod is connected between the base body and the outward-expanding bracket, and supporting feet are circumferentially arranged at the bottom of the base body and the outward-expanding bracket.

[0019] On the other hand, the present application provides a sound leakage detection system, comprising the sound leakage detection device as described in any one of the above items, and further comprising:

[0020] A data collector, used to collect the sound pressure signal of the microphone and the position signal of the test dummy;

[0021] A power amplifier connected to the data collector and used to amplify the data of the data collector;

[0022] A wireless signal generator is connected to the sound source component to be tested to drive the sound source component to be tested to emit sound;

[0023] The testing computer is connected to the power amplifier to process the data amplified by the power amplifier.

[0024] The sound leakage detection device provided in the present application has a turntable that can rotate relative to the base body along the extension direction of the outward expansion bracket. The microphone arranged on the turntable can perform rotation detection around the sound source component to be tested, thereby ensuring that the sound pressure signal of the sound source component to be tested is captured from different angles, thereby improving the comprehensiveness and accuracy of the detection.

[0025] In addition, the height-adjustable design of the support platform can facilitate the adjustment of the overall height of the sound source to be tested, so as to adapt to sound source devices of different sizes and models, thereby improving the adaptation range of the equipment. Multiple pickups can collect data at multiple points, which helps to accurately locate the specific location of the sound leakage and the distribution of the sound leakage intensity, facilitating the subsequent analysis and diagnosis of the sound pressure signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0027] Figure 1 It is a front view of the sound leakage detection device in the embodiment of the present application;

[0028] Figure 2 for Figure 1 Stereoscopic image of

[0029] Figure 3 for Figure 1 Schematic diagram of the connection structure between the middle support base and the turntable;

[0030] Figure 4 This is a schematic diagram of the structure of the support platform in the embodiment of the present application;

[0031] Figure 5 This is a schematic diagram of a sound leakage detection state in which the first rotating disk drives the mounting bracket to rotate to different positions in the embodiment of the present application;

[0032] Figure 6 It is a schematic diagram of the sound leakage detection state in which the mounting bracket rotates to different positions along with the outward expansion bracket in the embodiment of the present application;

[0033] Figure 7 This is a schematic diagram of the sound leakage detection state in which the second rotating disk drives the test dummy to rotate to different positions in the embodiment of the present application;

[0034] Figure 8 This is a schematic diagram of the connection of components of the sound leakage detection system in an embodiment of the present application;

[0035] Fig. 9 This is a flow chart of the steps of the sound leakage detection method in an embodiment of the present application.

[0036] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0037] Description of Reference Numerals

[0038] 100-support base; 101-base body; 102-external bracket; 1021-slide rail; 1022-reinforcement plate;

[0039] 103-reinforced connecting rod; 104-supporting foot;

[0040] 200-turntable; 201-rotating member; 202-supporting column; 203-first rotating disk;

[0041] 300-supporting platform; 301-heightening bracket; 302-second rotating disk; 303-supporting platform;

[0042] 400-mounting bracket; 401-clamp; 402-pickup;

[0043] 500-sound source to be tested; 600-test dummy;

[0044] 700-data acquisition device; 701-power amplifier; 702-wireless signal generator; 703-test computer; 704-anechoic chamber. DETAILED DESCRIPTION

[0045] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0046] As mentioned in the background technology, for wearable products (smart glasses, smart headsets, open headphones, etc.), in addition to meeting excellent in-ear acoustic performance, it is also necessary to consider spatial sound leakage caused by the open acoustic cavity, that is, sound leakage.

[0047] Sound leakage will affect surrounding users to a certain extent, and there is a problem of low privacy.

[0048] In the related art, manufacturers generally design equipment to detect whether wearable products leak sound. For example, the patent application with international publication number WO2023045697A1 proposes a sound leakage test device, which installs an arc bracket on the side of the wearable product to be tested and uses a rotating placement table to perform a sound leakage test on the wearable product to be tested.

[0049] However, due to the different acoustic system designs of different wearable products, the test distance requirements for acoustic performance in space are also inconsistent. In the above-mentioned published patent applications, the rotation angles of the arc bracket and the placement table bracket are small, and it is not possible to test sound leakage at multiple angles and different distances. The test device does not fully detect the actual detection position of the wearable product, and cannot detect sound leakage positions at some specific angles and orientations, which has great limitations.

[0050] Based on the above related description, one or more embodiments of the present application provide a sound leakage detection device and a sound leakage detection system, wherein, in the sound leakage detection device, since the turntable can rotate relative to the base body along the extension direction of the outward expansion bracket, the microphone arranged on the turntable can perform large-angle rotation detection around the sound source to be tested, thereby ensuring that the sound pressure signal of the sound source to be tested is captured from different angles, and improving the comprehensiveness and accuracy of the detection. In addition, the height-adjustable design of the support table can facilitate the adjustment of the overall height of the sound source to be tested, so as to adapt to sound source devices of different sizes and models, thereby improving the adaptation range of the equipment, and multiple microphones can collect data at multiple points, which helps to accurately locate the specific location of the sound leakage and the distribution of the sound leakage intensity, and facilitates the subsequent analysis and diagnosis of the sound pressure signal.

[0051] The embodiments of the present application are described below with reference to the accompanying drawings.

[0052] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a sound leakage detection device, including a support base 100 , a turntable 200 , a support table 300 and a mounting bracket 400 .

[0053] The support base 100 includes a base body 101 and an outward extension bracket 102 extending along the circumference of the base body 101;

[0054] The turntable 200 is rotatably connected to the base body 101, and at least a portion of the turntable 200 is connected to the outward extension bracket 102. The turntable 200 is configured to rotate relative to the base body 101 along the extension direction of the outward extension bracket 102; the support platform 300 is fixedly mounted on the base body 101, and the height of the support platform 300 is adjustable. The support platform 300 is used to install the sound source component 500 to be tested; the mounting bracket 400 is arranged on the upper part of the turntable 200, and a plurality of pickups 402 are installed on the mounting bracket 400 at intervals, and the pickups 402 are used to detect the sound pressure signal of the sound source component 500 to be tested.

[0055] It can be seen from the above description that the sound leakage detection device provided in the embodiment of the present application utilizes the rotation of the turntable 200 to enable the microphone 402 on the turntable 200 to be in different sound leakage test positions. The microphone 402 arranged on the turntable 200 can perform large-angle rotation detection around the sound source component 500 to be tested, thereby ensuring that the sound pressure signal of the sound source component 500 to be tested is captured from different angles, thereby improving the comprehensiveness and accuracy of the detection.

[0056] It should be noted that the directions described in the embodiments of the present application are carried out with reference to the directions shown in the drawings.

[0057] like Figure 3 As shown, in the embodiment of the present application, the outward expansion bracket 102 is an arc-shaped bracket. Further, the outward expansion bracket 102 is in a semicircular shape, and when the turntable 200 moves on the outward expansion bracket 102, it rotates relative to the circumferential direction of the base body 101. This setting can provide the turntable 200 with a rotation range of 0° to 180°, ensuring that the pickup 402 on the mounting bracket 400 can detect sound leakage from more angles.

[0058] In order to ensure the overall structural strength of the support base 100 , a plurality of reinforcing connecting rods 103 are fixedly connected to the base body 101 and the outward expansion bracket 102 .

[0059] like Figure 3 As shown, in some embodiments, the turntable 200 includes a rotating member 201 and a supporting column 202 disposed on the rotating member 201, and the mounting bracket 400 is disposed on the supporting column 202, one end of the rotating member 201 is rotatably connected to the base body 101, and the other end is overlapped with the outward extension bracket 102.

[0060] Exemplarily, the base body 101 and the rotating member 201 are rotatably connected by a pivot member that passes through the two. The rotating member 201 is used to overlap the outward-expanding bracket 102, and a protruding block is constructed on the side facing the ground. The rotating member 201 is constrained on the outward-expanding bracket 102 by the block. Here, the block constitutes a blocking and restraining force of the rotating member 201 in the radial direction of the outward-expanding bracket 102, but does not affect the sliding effect of the rotating member 201 on the outward-expanding bracket 102.

[0061] In order to ensure that the sound leakage detection device is in a stable position and does not shake easily when detecting sound leakage, a detachable clamping component can also be provided between the rotating member 201 and the outward expansion bracket 102. After the external force adjusts the rotating member 201 to rotate to a suitable position, the rotating member 201 is fixed to the outward expansion bracket 102 by means of the clamping component. The clamping component can be an axle pin that passes through the rotating member 201 and the outward expansion bracket 102, or other components that can limit the rotation of the rotating member 201. There is no absolute limitation on this in the embodiments of the present application.

[0062] In addition, the reinforcing plate 1022 provided above can also facilitate fixing the rotating member 201 after adjusting the rotating member 201 to a suitable position, and provide an installation basis for fixing the rotating member 201 and the outward expansion bracket 102 without affecting the sliding effect of the slide rail portion 1021. For example, the rotating member 201 and the reinforcing plate 1022 are clamped by a C-type clamp, or are fixed by bolt fasteners that penetrate the rotating member 201 and the reinforcing plate 1022 together.

[0063] As an alternative implementation, the clamping block in the aforementioned embodiment may be omitted, and the rotating member 201 may be directly overlapped on the outward expansion bracket 102 .

[0064] In addition, the outward-expanding bracket 102 includes a slide rail portion 1021 for sliding displacement with the rotating member 201, and a reinforcing plate 1022 arranged on the outer edge of the slide rail portion 1021. The reinforcing plate 1022 is arranged to protrude outward relative to the slide rail portion 1021. When the turntable 200 displaces on the outward-expanding bracket 102, the reinforcing plate 1022 can provide a more stable supporting force.

[0065] like Figure 3 As shown, the supporting column 202 is slidably connected to the rotating member 201 , and the supporting column 202 is configured to be displaced on the rotating member 201 along the radial direction of the outward expansion bracket 102 .

[0066] In the above embodiment, the sliding connection between the support column 202 and the rotating member 201 bracket can be a manual sliding connection or an electric sliding connection. For example, a linear drive motor is provided, and the driving end of the linear drive motor is fixedly connected to the support column 202, driving the support column 202 to move on the rotating member 201.

[0067] The microphone 402 is arranged on the supporting column 202, and the supporting column 202 is slidably connected to the rotating member 201, which can facilitate the adjustment of the distance between the microphone 402 and the sound source member 500 to be tested, so as to adapt to different test scenarios and improve the versatility of the sound leakage detection device.

[0068] In some embodiments, the height of the support column 202 is adjustable, and the height adjustment method of the support column 202 can adopt the height adjustment component in the related art, for example, through a linear drive motor or hydraulic drive lifting, etc., which is not absolutely limited in the embodiments of the present application. The adjustable height of the support column 202 can facilitate the adjustment of the detection height of the pickup 402, thereby adapting to different test scenarios.

[0069] In the above embodiment, a first rotating disk 203 is provided on the upper portion of the supporting column 202 , and a plane where the rotating disk is located is perpendicular to the axis direction of the rotating member 201 . The mounting bracket 400 is rotatably connected to the supporting column 202 via the rotating disk.

[0070] Depend on Figure 2 and Figure 3 It can be seen that the first rotating disk 203 is arranged toward the direction of the sound source component 500 to be measured, and the first rotating disk 203 and the mounting bracket 400 are fixedly connected by fasteners that penetrate both. The first rotating disk 203 can rotate and stop freely to facilitate adjustment of the rotation angle of the mounting bracket 400.

[0071] Here, the start and stop control method of the first rotating disk 203 can be motor-driven or manually driven. For example, when the start and stop of the first rotating disk 203 is controlled by manual drive, a rotating handle is installed on the first rotating disk 203, and a claw or a pin is installed on the edge of the first rotating disk 203. The operator drives the first rotating disk 203 to rotate by manually turning the rotating handle. After rotating to the appropriate position, the claw or the pin is inserted into the first rotating disk 203 to prevent it from continuing to rotate.

[0072] By means of the first rotating disk 203, the mounting bracket 400 can rotate in the circumferential direction of the side of the sound source component 500 to be tested, and the rotation is performed around the horizontal X-axis direction, so that the sound leakage detection operation can be performed within most angle ranges. Figure 2 In the figure, the Y-axis direction is the height lifting direction of the support column 202, and the Z-axis direction is the extending direction of the reinforcing connecting rod 103.

[0073] like Figure 1 As shown, in some embodiments, the mounting bracket 400 is an arc-shaped bracket, and multiple pickups 402 are evenly arranged along the circumferential direction of the mounting bracket 400; a test dummy 600 is fixed on the support platform 300, and the sound source component 500 to be tested is installed in the ear of the test dummy 600, and the sound source component 500 to be tested is located at the center of the mounting bracket 400.

[0074] In the above embodiment, the mounting bracket 400 is an arc-shaped bracket, and the curvature at any position on the mounting bracket 400 is the same, that is, the mounting bracket 400 is an arc with a constant radius of curvature, and the microphones 402 on the mounting bracket 400 are evenly arranged to ensure that the distances from each microphone 402 to the sound source are equal, that is, the distances shown by the dotted lines in the figure are the same. This setting can improve the detection accuracy of the microphone 402 for the sound source position, so that the microphone 402 can more accurately locate the sound leakage position of the sound source.

[0075] Furthermore, the mounting bracket 400 is a semicircular arc bracket, and the pickups 402 on the mounting bracket 400 are arranged at even intervals. Exemplarily, a plurality of mounting slots are arranged at intervals on the mounting bracket 400, and a clamp 401 is fixed in each mounting slot. The pickup 402 is clamped and fixed on the mounting bracket 400 by the clamp 401. This arrangement can facilitate the removal of the pickup 402, thereby facilitating the adjustment of the number and position of the pickup 402 on the mounting bracket 400.

[0076] Here, the test dummy 600 can refer to the dummy component settings in the relevant technology. The test dummy 600 at least includes an upper body structure and a head structure that simulate the human body shape. The sound source component 500 to be tested is placed inside the auricle of the test dummy 600 to more realistically simulate the usage scenario.

[0077] It should be noted that since the test dummy 600 has both an upper body structure and a head structure, the mounting bracket 400 will interfere with the upper body structure when it rotates to a certain angle on the first rotating disk 203. Therefore, the actual rotation angle range of the mounting bracket 400 is less than 360°. Even so, the mounting bracket 400 can ensure coverage and sound leakage detection in all areas around the test dummy 600. Therefore, this setting can more accurately and realistically simulate the use environment and avoid errors in the sound pressure signal collected by the microphone 402.

[0078] In the related art, the sound leakage test device of the wearable product directly performs detection with the midpoint of the head of the test dummy 600 as the center, rather than the sound source as the center. In this way, the distances from each microphone 402 on the mounting bracket 400 to the sound source are different, resulting in errors in the sound pressure signals collected by the microphones 402 at different positions. In the embodiment of the present application, by taking the sound source part 500 to be tested as the center of the circle of the mounting bracket 400 for detection, it can effectively ensure that the data collection of the microphone 402 is true and accurate, thereby improving the accuracy of sound leakage detection.

[0079] like Figure 4 As shown, in some embodiments, the support platform 300 includes a height-adjusting bracket 301 connected to the base body 101 , and a second rotating disk 302 is disposed on the height-adjusting bracket 301 . The second rotating disk 302 is used to support the sound source component 500 to be tested.

[0080] Exemplarily, the height adjustment method of the height adjustment bracket 301 can be linear motor drive, hydraulic lifting drive, or manual adjustment drive, as long as the height adjustment can be achieved. In order to ensure that the support platform 300 is firmly installed on the sound source component 500 to be tested, a supporting platform 303 is provided on the second rotating disk 302, and the supporting platform 303 rotates synchronously with the second rotating disk 302.

[0081] In the above embodiment, the start and stop control method of the second rotating disk 302 can be motor-driven or manually driven. For example, when the start and stop of the second rotating disk 302 is controlled by manual drive, a rotating handle is installed on the second rotating disk 302, and a claw or a pin is installed on the edge of the second rotating disk 302. The operator drives the second rotating disk 302 to rotate by manually turning the rotating handle. After rotating to the appropriate position, the claw or the pin is inserted into the second rotating disk 302 to prevent it from continuing to rotate.

[0082] In some embodiments, the bottom of the height-adjusting bracket 301 is slidably connected to the base body 101 , and the height-adjusting bracket 301 is configured to be displaced on the base body 101 along the radial direction of the outward-expanding bracket 102 .

[0083] The sliding connection between the height-adjusting bracket 301 and the base body 101 may be a manual sliding connection or an electric sliding connection. For example, a linear drive motor is provided, and the driving end of the linear drive motor is fixedly connected to the height-adjusting bracket 301 to drive the height-adjusting bracket 301 to move on the base body 101.

[0084] Through the above arrangement, the height of the support platform 300 can be adjusted, and the distance between the support platform 300 and the microphone 402 can be adjusted, which further improves the flexibility and freedom of the sound leakage detection device. On the one hand, it can adapt to the sound source components 500 to be tested of different wearable products, and on the other hand, it is also convenient for comprehensive detection of the sound leakage position from all directions.

[0085] It should be noted that, in some embodiments, the sound leakage detection process can be performed synchronously with the position adjustment action of the microphone 402. For example, in the process of the motor driving the support column 202 to move closer to or away from the support platform 300, the microphone 402 synchronously detects the sound leakage position of the sound source component 500 to be tested. This setting can facilitate the sound leakage detection process for different positions and different states of the sound source component 500 to be tested, and facilitates the subsequent analysis and diagnosis of the sound pressure signal of the leakage.

[0086] In some embodiments, the bottom of the base body 101 and the outward expansion bracket 102 are provided with support feet 104. The support feet 104 can separate the support base 100 and the turntable 200 from the ground, thereby reserving space between the sound leakage detection device and the bottom plate of the anechoic chamber 704 to a large extent, ensuring the anechoic effect of the anechoic chamber 704.

[0087] like Figures 5 to 7 As shown, Figure 5 (a) to (d) are respectively the sound leakage detection states in which the first rotating disk 203 drives the mounting bracket 400 to rotate to different positions along the X-axis circumferential direction; Figure 6 (e) to (g) are respectively the sound leakage detection states when the mounting bracket 400 rotates to different positions along with the outward expansion bracket 102; Figure 7(h) to (j) respectively represent the sound leakage detection states in which the second rotating disk 302 drives the test dummy 600 to rotate to different positions. The sound leakage detection in the above-mentioned states can truly simulate different usage scenarios of the wearable product. At the same time, the microphone 402 can also perform sound leakage detection on the sound source component 500 to be tested in various directions and angles, thereby improving the test precision and accuracy of the sound leakage detection device.

[0088] It should be noted that, since the support platform 300 in the embodiment of the present application is provided with a second rotating disk 302, the test dummy 600 can rotate freely. Therefore, the semicircular mounting bracket 400 and the semicircular outward expansion bracket 102 can enable the sound source component 500 to be placed in any auricle of the test dummy 600 to perform approximately 360° sound leakage detection, effectively ensuring a real simulation scene, reducing the debugging process, and helping to improve the efficiency of sound leakage detection.

[0089] Another embodiment of the present application further provides a sound leakage detection system, including the sound leakage detection device as described in any of the above embodiments, further comprising:

[0090] A data collector 700, used for collecting the sound pressure signal of the microphone 402 and the position signal of the test dummy 600;

[0091] A power amplifier 701, connected to the data collector 700, for amplifying the data of the data collector 700;

[0092] A wireless signal generator 702 is connected to the sound source component 500 to drive the sound source component 500 to emit sound;

[0093] The test computer 703 is connected to the power amplifier 701 to process the data amplified by the power amplifier 701 .

[0094] Since the sound leakage detection system provided in the embodiment of the present application includes the above-mentioned sound leakage detection device, it has all the advantages of the sound leakage detection device.

[0095] like Figure 8 As shown, illustratively, the data collector 700 is connected to the microphone 402 and the test dummy 600 to collect the sound pressure signal of the microphone 402 and the position signal of the test dummy 600, the power amplifier 701 is connected to the data collector 700 and the test computer 703 to amplify the data of the data collector 700 so that the test computer 703 can process it; the wireless signal generator 702 drives the sound source component 500 to be tested to emit sound, and the test computer 703 performs data analysis by running the relevant sound leakage evaluation program. Here, the sound leakage evaluation program can adopt the evaluation method in the relevant technology, which will not be repeated in the embodiments of this application.

[0096] like Fig. 9 As shown, the embodiment of the present application also provides a sound leakage detection method, and the exemplary operation steps are as follows:

[0097] The test system is started, and the sound leakage detection device and related components such as the power amplifier 701 and the data acquisition device 700 are calibrated correctly. Then, the normal sound leakage detection process begins. The test computer 703 inputs the test electrical signal to the sound source component 500 to be tested, and the pickup 402 on the mounting bracket 400 collects the sound pressure signal of the sound leakage, which is output to the test computer 703 after passing through the data acquisition device 700 and the power amplifier 701. The evaluation program of the test computer 703 analyzes, evaluates and outputs the test results. The test computer 703 is pre-input with simulation results, and an evaluation report is generated by comparing the simulation results with the output test results to complete this sound leakage detection operation.

[0098] The above simulation results are the sound leakage simulation results of the sound source component 500 to be tested under ideal conditions, and the output test results are the actual sound leakage results. The evaluation report obtained by comparing the two can effectively judge the sound leakage situation of the sound source component 500 to be tested, thereby facilitating designers to modify the design of the sound source component 500 to be tested.

[0099] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0100] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A sound leakage detection device, characterized in that: include: A support base (100) comprises a base body (101) and an outward expansion bracket (102) arranged along the circumference of the base body (101); A turntable (200) is rotatably connected to the base body (101), and a portion of the turntable (200) is connected to the outward-expanding bracket (102). The turntable (200) is configured to rotate relative to the base body (101) along an extension direction of the outward-expanding bracket (102); A support platform (300) is arranged on the base body (101); the height of the support platform (300) is adjustable; the support platform (300) is used to install the sound source component (500) to be tested; A mounting bracket (400) is arranged on the upper part of the turntable (200), and a plurality of pickups (402) are installed at intervals on the mounting bracket (400). The pickups (402) are used to detect the sound pressure signal of the sound source component (500) to be tested.

2. The sound leakage detection device according to claim 1, characterized in that: The turntable (200) comprises a rotating member (201) and a supporting column (202) arranged on the rotating member (201); the mounting bracket (400) is arranged on the supporting column (202); one end of the rotating member (201) is rotatably connected to the base body (101), and the other end is overlapped with the outward extension bracket (102).

3. The sound leakage detection device according to claim 2, characterized in that: The support column (202) is slidably connected to the rotating member (201), and the support column (202) is configured to be displaced on the rotating member (201) along the radial direction of the outward expansion bracket (102).

4. The sound leakage detection device according to claim 2, characterized in that: The height of the support column (202) is adjustable. A first rotating disk (203) is provided on the upper part of the support column (202). The plane where the first rotating disk (203) is located is perpendicular to the axial direction of the rotating member (201). The mounting bracket (400) is rotatably connected to the support column (202) via the first rotating disk (203).

5. The sound leakage detection device according to claim 1, characterized in that: The support platform (300) comprises a height-adjusting bracket (301) connected to the base body (101), and a second rotating disk (302) is provided on the height-adjusting bracket (301), and the second rotating disk (302) is used to support the sound source component (500) to be tested.

6. The sound leakage detection device according to claim 5, characterized in that: The bottom of the height-adjusting bracket (301) is slidably connected to the base body (101), and the height-adjusting bracket (301) is configured to be displaced on the base body (101) along the radial direction of the outward-expanding bracket (102).

7. The sound leakage detection device according to any one of claims 1 to 5, characterized in that: The mounting bracket (400) is an arc-shaped bracket, and the plurality of pickups (402) are evenly spaced along the circumferential direction of the mounting bracket (400); A test dummy (600) is fixed on the support platform (300), the sound source component (500) to be tested is installed on the ear of the test dummy (600), and the sound source component (500) to be tested is located at the center of the circle of the mounting bracket (400).

8. The sound leakage detection device according to any one of claims 1 to 5, characterized in that: The outward expansion bracket (102) is a semicircular arc bracket.

9. The sound leakage detection device according to any one of claims 1 to 5, characterized in that: A reinforcing connecting rod (103) is connected between the base body (101) and the outward-expanding bracket (102), and supporting feet (104) are arranged circumferentially at the bottom of the base body (101) and the outward-expanding bracket (102).

10. A sound leakage detection system, characterized in that: The sound leakage detection device according to any one of claims 1 to 9, further comprising: A data collector (700) for collecting a sound pressure signal of the microphone (402) and a position signal of a test dummy (600); A power amplifier (701), connected to the data collector (700), and used to amplify the data of the data collector (700); A wireless signal generator (702) is connected to the sound source component (500) to be tested, so as to drive the sound source component (500) to be tested to emit sound; The test computer (703) is connected to the power amplifier (701) to process the data amplified by the power amplifier (701).

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