Test system

Abstract

The invention belongs to the technical field of audio testing, and particularly relates to a testing system. The test system is used for detecting the sound insulation effect of a protective ear appliance, the protective ear appliance blocks an ear canal, and the test system comprises a sound pickup device detachably connected to the protective ear appliance, a detection sound source used for sending a sound signal to a human ear and a test structure in communication connection with the sound pickup device. The sound pickup device comprises a first microphone and a second microphone, at least part of the second microphone penetrates through the protective ear tool and is communicated with the ear canal, the first microphone is used for measuring the sound pressure level of the sound signal outside the ear canal and generating a first to-be-measured signal, and the second microphone is used for measuring the sound pressure level of the sound signal outside the ear canal and generating a second to-be-measured signal; the second microphone is used for measuring the sound pressure level of the sound signal in the ear canal and generating a second to-be-tested signal, and the test structure is used for detecting the first to-be-tested signal and the second to-be-tested signal. According to the invention, the test accuracy and applicability of the test system can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of audio testing, and in particular relates to a testing system. Background Art

[0002] In industrial and high-noise environments, companies or individuals invest in binaural noise protection earplugs or earmuffs to protect employees' hearing. However, due to the uneven quality of protective eargear or employees' failure to choose the right type of protective eargear, the protective effect of protective eargear is limited, resulting in frequent noise-induced hearing damage. Workers who are exposed to an equivalent sound pressure level of 85dB(A) or above for a long time for 8 hours may face the risk of hearing loss. This loss not only brings many inconveniences to communication, but the most obvious impact is that it hinders language communication and may eventually lead to noise-induced hearing loss. Therefore, when choosing protective eargear, it is necessary to test the noise isolation effect of the protective eargear.

[0003] At present, when testing the sound insulation performance of protective earwear, the protective earwear is usually placed on a special test device for testing. However, due to the differences in each person's ear canal structure and hearing conditions, even if the protective earwear passes the test of the test device, it may not play a sound insulation role when actually worn because it is not suitable for the user. Therefore, the test results of the protective earwear on the existing test device cannot truly reflect the use effect of the protective earwear. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a test system, aiming to solve the problem of how to improve the accuracy and applicability of the test system.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] In a first aspect, a test system is provided for detecting the sound insulation effect of protective ear gear, wherein the protective ear gear blocks the ear canal, the test system comprises a sound pickup device detachably connected to the protective ear gear, a detection sound source for emitting a sound signal to a human ear, and a test structure communicatively connected to the sound pickup device, the sound pickup device comprises a first microphone and a second microphone, the second microphone is communicated with the ear canal, the first microphone is used to measure the sound pressure level of the sound signal outside the ear canal and generate a first signal to be tested, the second microphone is used to measure the sound pressure level of the sound signal in the ear canal and generate a second signal to be tested, and the test structure is used to detect the first signal to be tested and the second signal to be tested.

[0007] In some embodiments, the first microphone and the second microphone are both arranged outside the ear canal, and the testing system includes a probe tube penetrating the protective eargear, one end of the probe tube extends into the ear canal, and the other end of the probe tube is connected to the second microphone, and the probe tube is used to transmit the sound in the ear canal to the second microphone.

[0008] In some embodiments, the sound pickup device includes a packaging shell arranged outside the ear canal, the packaging shell has a closed sealed cavity, the first microphone and the second microphone are encapsulated in the sealed cavity, the packaging shell has a through hole connected to the sealed cavity, and the probe is connected to the second microphone through the through hole.

[0009] In some embodiments, two sound pickup devices are provided, and the two sound pickup devices are respectively provided corresponding to two ears of the human body.

[0010] In some embodiments, the detection sound source includes a detection host, the detection host includes a sound outlet for emitting the sound signal, and the sound outlet is arranged toward the human head.

[0011] In some embodiments, the detection host is also used to send a test audio to the first microphone and the second microphone. After receiving the test audio, the first microphone and the second microphone generate a third signal to be tested. The test structure is used to detect the third signal to be tested to perform a calibration test on the first microphone and the second microphone.

[0012] In some embodiments, the detection host includes a first connection part arranged at the sound outlet, the sound pickup device includes a second connection part adapted to the first connection part, and the first connection part and the second connection part are detachably connected.

[0013] In some embodiments, the detection sound source also includes a base and a height adjustment rod connected to the base, the detection host is connected to the top of the height adjustment rod, and the length of the height adjustment rod is adjustable to move the detection host to a preset height.

[0014] In some embodiments, the test system further comprises two cables, wherein the two cables are respectively connected to the two sound pickup devices, and an end of the cable facing away from the sound pickup device is connected to the detection sound source via an audio connector.

[0015] In some embodiments, the test system further includes test glasses worn on the ears, the test glasses include a glasses frame and a mounting clip arranged on the glasses frame, and the mounting clip is used to fix the sound pickup device to the test glasses.

[0016] The test system provided in the present application can detect the sound insulation effect of the protective eargear only by connecting the sound pickup device to the protective eargear. Therefore, the test can be performed when the protective eargear is worn on the ear. The sound insulation effect of the protective eargear can be detected more realistically, and the influence of individual differences on the accuracy of the test results can be effectively reduced, thereby improving the accuracy and applicability of the test and ensuring that the user can choose and wear the most suitable protective eargear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or exemplary technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the test system provided in the embodiment of the present application;

[0019] Figure 2 is a schematic diagram of the test process of the test system provided in an embodiment of the present application;

[0020] Figure 3 is a structural schematic diagram of a test system provided by another embodiment of the present application;

[0021] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part A.

[0022] Among them, the reference numerals in the figure are:

[0023] 10. Detect sound source; 11. Detect host; 111. First connection part; 12. Base; 13. Height adjustment rod; 131. Screw structure; 20. Sound pickup device; 21. First microphone; 22. Second microphone; 23. Package shell; 24. Second connection part; 30. Probe; 40. Cable; 50. Audio connector; 61. Eyeglass frame; 62. Mounting clip; 200. Protective earwear. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] See also Figures 1 to 4The embodiment of the present application provides a test system for detecting the sound insulation effect of a protective earpiece 200, the protective earpiece 200 blocks the ear canal, the test system includes a sound pickup device 20 connected to the protective earpiece 200, a detection sound source 10 for sending a sound signal to the human ear, and a test structure connected to the sound pickup device 20 for communication, the sound pickup device 20 includes a first microphone 21 and a second microphone 22, the second microphone 22 is connected to the ear canal, the first microphone 21 is used to measure the sound pressure level of the sound signal outside the ear canal and generate a first signal to be tested, the second microphone 22 is used to measure the sound pressure level of the sound signal in the ear canal and generate a second signal to be tested, and the test structure is used to detect the first signal to be tested and the second signal to be tested.

[0029] It should be noted that the protective earwear 200 of the embodiment of the present application can be an earmuff or an earplug, etc. It is understandable that when the protective earwear 200 is worn on the ear, the ear canal is blocked, thereby isolating the outside of the ear canal from the inside of the ear canal. It is understandable that the test system of the embodiment of the present application can be compatible with multiple brands and models of protective equipment (including earplugs, earmuffs, closed helmets, etc.) for hearing protection effect verification.

[0030] It should be noted that sound pressure level is a logarithmic scale that describes the intensity of sound, usually in decibels (dB). The sound pressure level is calculated by taking the common logarithm of the ratio of the measured sound pressure to the reference sound pressure and multiplying it by 20. The sound pressure range that the human ear can hear corresponds to a sound pressure level range of 0dB to 120dB.

[0031] The test structure has the function of analyzing the first test signal and the second test signal generated after the first microphone 21 and the second microphone 22 receive the sound signal, and according to the preset data processing logic, the sound insulation effect test result of the protective earwear 200 can be obtained. The test structure can be any available electronic device with computing power, such as any type of audio analysis instrument and computer.

[0032] Specifically, the test structure can calculate the difference between the sound pressure level of the sound signal outside the ear canal and the sound pressure level of the sound signal inside the ear canal to obtain a personal sound attenuation value, and analyze the sound insulation effect of the protective earwear 200 through the personal sound attenuation value.

[0033] After the test is completed, the system will provide a "pass" or "fail" result; a "pass" result indicates that the hearing protector can provide adequate protection based on the employee's noise exposure; a "fail" result indicates that the hearing protector is not worn correctly, or that the protective earwear 200 is not suitable for the size or shape of the employee's ear canal, and the employee does not get adequate protection. Understandably, one protective earwear 200 is not suitable for everyone, as everyone's ear canal is different and the usage environment is also different. Measuring the personal sound attenuation value of each user can make the test results more accurate and provide each user with a more suitable protective earwear 200.

[0034] The test system provided in the present application can detect the sound insulation effect of the protective earmuffs 200 by simply connecting the sound pickup device 20 to the protective earmuffs 200. Therefore, the test can be performed when the protective earmuffs 200 are worn on the ears. The sound insulation effect of the protective earmuffs 200 can be detected more realistically, and the influence of individual differences on the accuracy of the test results can be effectively reduced, thereby improving the accuracy and applicability of the test and ensuring that the user can choose and wear the most suitable protective earmuffs 200.

[0035] In addition, the present application can conduct testing by simply connecting the sound pickup device 20 to the protective earwear 200, which is convenient and easy to operate; and the test equipment is small in size, light in weight, easy to disassemble and install, and can be stored in a portable suitcase for easy transfer.

[0036] It can be understood that the sound pickup device 20 and the protective earmuff 200 are detachably connected, so as to facilitate the connection and separation of the sound pickup device 20 and the protective earmuff 200, so that the sound pickup device 20 can be connected to multiple protective earmuffs 200 respectively, so as to test the sound insulation effect of multiple protective earmuffs 200.

[0037] In some embodiments, during the test, the detection sound source 10 can send multiple sound signals to the human ear, and the frequencies of the sound signals are different, so that the sound pressure levels of the sound signals outside and inside the ear canal can be measured based on different frequencies, thereby making the test structure more accurate and comprehensive. Specifically, the test system of the embodiment of the present application can measure sound signals of seven standard frequencies within five seconds.

[0038] In some embodiments, the first microphone 21 and the second microphone 22 are both arranged outside the ear canal. The testing system includes a probe tube 30 that passes through the protective eargear 200. One end of the probe tube 30 extends into the ear canal, and the other end of the probe tube 30 is connected to the second microphone 22. The probe tube 30 is used to transmit the sound in the ear canal to the second microphone 22.

[0039] In the embodiment of the present application, the probe 30 is connected to the second microphone 22, and the environment in which the second microphone 22 is located is a pressure field environment, while the environment in which the first microphone 21 is located is a free field environment. It should be noted that the pressure field refers to the situation where the wavelength of the sound wave is larger than the place where the sound is located, that is, when the wavelength of the sound wave is larger than the size of the space in which it is located, the sound pressure distribution in the space is relatively uniform, and there is no obvious standing wave or reflection effect. This environment is called a pressure field. In the pressure field, the sound pressure is evenly distributed, and there is almost no obvious standing wave or sound wave propagation direction. The free field refers to the situation where the wavelength of the sound wave is smaller than the place where the sound is located, that is, when the wavelength of the sound wave is smaller than the size of the space in which it is located, the sound wave propagation is not affected by the boundary and can propagate freely in the space. This environment is called a free field.

[0040] It can be understood that the probe tube 30 is equivalent to an extension of the second microphone 22, and the two are combined to form an integral unit so that the second microphone 22 can collect sound signals in the ear canal. The probe tube 30 includes a first end and a second end, the first end is used to be placed in the ear canal to be able to directionally collect sound; the second end is connected to the second microphone 22 component to transmit sound to the second microphone 22.

[0041] Optionally, the probe tube 30 is made of a soft elastic material, such as silicone or rubber, to ensure that the probe tube 30 can adapt to the physiological structure in the ear, bend and reach a suitable position. It can be understood that the probe tube 30 is small in size and does not occupy too much space. The elastic material and small size can ensure that the probe tube 30 can be worn in the ear together with the protective earpiece 200, and the wall of the probe tube 30 has a certain thickness, so that the wall can provide a certain support performance for the probe tube 30, so as to prevent the probe tube 30 from being squeezed and collapsed by the protective earpiece 200, and ensure that the sound in the tube can be smoothly transmitted.

[0042] In addition, the probe tube 30 is replaceable. When a probe tube 30 of different specifications or materials is needed for testing, the probe tube 30 is separated from the second microphone 22 and the protective earwear 200 and replaced.

[0043] In some embodiments, the sound pickup device 20 includes a packaging shell 23 arranged outside the ear canal, the packaging shell 23 has a closed sealed cavity, the first microphone 21 and the second microphone 22 are encapsulated in the sealed cavity, the packaging shell 23 has a through hole connected to the sealed cavity, and the probe 30 is connected to the second microphone 22 through the through hole.

[0044] Optionally, the packaging shell 23 can be in the shape of an earphone, wherein "earphone" includes any speaker, microphone, and associated structure that is intended to be inserted into the ear canal of a listener or otherwise acoustically coupled to the ear canal, and includes but is not limited to earphones, earplugs, headphones, and other similar devices that can be inserted into or otherwise acoustically coupled to a person's ear canal.

[0045] In some embodiments, two sound pickup devices 20 are provided, and the two sound pickup devices 20 are respectively provided for the two ears of the human body. It can be understood that at this time, both ears of the tester are wearing protective earwear 200. By connecting the two sound pickup devices 20 to the two protective earwear 200 respectively, the protective earwear 200 of the left and right ears can be tested synchronously, thereby further improving the accuracy of the test.

[0046] In some embodiments, the detection sound source 10 includes a detection host 11, which includes a sound outlet for emitting sound signals, and the sound outlet is arranged toward the human head. Specifically, the test structure is a computer, and the detection host 11 is connected to the computer in communication, and the detection host 11 and the computer can be connected via a USB cable.

[0047] Furthermore, the detection host 11 is provided with a speaker, a power amplifier and an acquisition card. The computer is connected to the acquisition card via USB. The acquisition card converts the signal and transmits it to the power amplifier for amplification. The power amplifier is used to amplify the sound signal generated by the computer and transmit it to the speaker, thereby ensuring that the power of the sound signal is sufficient to drive subsequent devices.

[0048] In some embodiments, the detection host 11 is also used to send a test audio to the first microphone 21 and the second microphone 22. After receiving the test audio, the first microphone 21 and the second microphone 22 generate a third test signal. The detection sound source 10 is used to detect the third test signal to perform a calibration test on the first microphone 21 and the second microphone 22.

[0049] Specifically, the detection host 11 sends a test audio to the sound pickup device 20 before the test, thereby calibrating the sound pickup device 20 and confirming whether the factory specification parameters of the sound pickup device 20 are accurate. If there is a slight deviation, the calibration compensation gain is adjusted; if the deviation is too large, it means that the quality of the first microphone 21 and the second microphone 22 in the sound pickup device 20 is problematic, and the sound pickup device 20 needs to be replaced.

[0050] In some embodiments, the detection host 11 includes a first connection portion 111 disposed at the sound outlet, and the sound pickup device 20 includes a second connection portion 24 adapted to the first connection portion 111, and the first connection portion 111 and the second connection portion 24 are detachably connected. Therefore, the sound pickup device 20 can be connected to the detection host 11 through the first connection portion 111 and the second connection portion 24, so that the state of the sound pickup device 20 is stabilized, and the sound pickup device 20 is calibrated, thereby improving the accuracy of the calibration.

[0051] Specifically, the first connection portion 111 may be a hanging hole, and the second connection portion 24 may be a hook adapted to the hanging hole. By hanging the hook on the hanging hole, the state of the sound pickup device 20 is stabilized.

[0052] In some embodiments, the detection sound source 10 also includes a base 12 and a height adjustment rod 13 connected to the base 12, and the detection host 11 is connected to the top of the height adjustment rod 13, and the length of the height adjustment rod 13 is adjustable to move the detection host 11 to a preset height. Specifically, the preset height is the height at which the sound outlet of the detection host 11 is directly opposite to the nose tip of the tester. By moving the detection host 11 to the preset height, the sound pickup device 20 can better receive the sound signal, making the test result more accurate. Optionally, during the test, the distance between the sound outlet of the test host and the nose tip of the tester is 300 mm.

[0053] Specifically, the height adjustment rod 13 may include two rod bodies that are socketed with each other and a screwing structure 131. Through threaded cooperation, the relative positions of the two rod bodies in the height direction can be adjusted by screwing the screwing structure 131, thereby adjusting the length of the height adjustment rod 13 and further adjusting the height of the detection host 11.

[0054] In some embodiments, the test system further includes two cables 40 , the two cables 40 are respectively connected to the two pickup devices 20 , and one end of the cable 40 away from the pickup device 20 is connected to the detection sound source 10 through an audio connector 50 .

[0055] Specifically, the two cables 40 are connected to the detection host 11 through the audio connector 50. During the test, the connection point of the two cables 40 can be placed on the tip of the tester's nose. Since the two ears of the human body are symmetrical with respect to the tip of the nose, the connection point of the two cables 40 is placed on the tip of the tester's nose. The positions of the two sound pickup devices 20 can be adjusted based on the tip of the nose to make the positions of the two sound pickup devices 20 symmetrical, thereby making the test results more accurate.

[0056] In some embodiments, the test system further includes test glasses worn on the ears, the test glasses include a glasses frame 61 and a mounting clip 62 disposed on the glasses frame 61, the mounting clip 62 is used to fix the sound pickup device 20 to the test glasses, so that the position of the sound pickup device 20 is stable during the test process, thereby achieving better sound pickup effect and more accurate test results. Optionally, the mounting clip 62 can also be used in conjunction with the glasses worn by the tester himself, and this application does not make a sole limitation on this.

[0057] The test process of the present application is as follows: first, let the tester wear the protective earwear 200: then, the tester inserts the two sound pickup devices 20 into the probe tubes 30 connected to the protective earwear 200 in the left and right ears respectively, and the connection of the two cables 40 can be placed at the tip of the nose, ensuring that the USB cable of the detection host 11 is connected to the computer and checking that the device has been recognized normally; then send a test signal through the system operation interface, and the speaker starts to play a specific sound signal; click the "Start Test" button on the system interaction interface, and measure the sound pressure level inside and outside the two-ear protective earwear 200 at the same time. The test duration is controlled within 5 seconds to measure the sound signal of 7 standard frequencies; after the test, the system automatically calculates and displays the tester's personal sound attenuation value, and the result of whether the protection test passes or not can be observed on the interface; if "passed", it means that the hearing protector can provide sufficient noise protection. The "failed" result means that the hearing protector is not worn correctly, or the protective earwear 200 that is not suitable for the size or shape of the tester's ear canal is selected, and the tester does not get enough protection.

[0058] In summary, the test system provided in the present application can detect the sound insulation effect of the protective earmuffs 200 by simply connecting the sound pickup device 20 to the protective earmuffs 200. Therefore, the test can be performed when the protective earmuffs 200 are worn on the ears. The sound insulation effect of the protective earmuffs 200 can be detected more realistically, and the influence of individual differences on the accuracy of the test results can be effectively reduced, thereby improving the accuracy and applicability of the test and ensuring that the user can choose and wear the most suitable protective earmuffs 200.

[0059] The above are only optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A testing system for detecting the sound insulation effect of a protective earpiece (200), wherein the protective earpiece (200) blocks the ear canal, characterized in that: The test system comprises a sound pickup device (20) connected to the protective eargear (200), a detection sound source (10) for sending a sound signal to a human ear, and a test structure connected to the sound pickup device (20) in communication, wherein the sound pickup device (20) comprises a first microphone (21) and a second microphone (22), wherein the second microphone (22) is connected to the ear canal, the first microphone (21) is used to measure the sound pressure level of the sound signal outside the ear canal and generate a first signal to be tested, the second microphone (22) is used to measure the sound pressure level of the sound signal inside the ear canal and generate a second signal to be tested, and the test structure is used to detect the first signal to be tested and the second signal to be tested.

2. The test system according to claim 1, characterized in that: The first microphone (21) and the second microphone (22) are both arranged outside the ear canal. The test system comprises a probe tube (30) which is inserted through the protective ear device (200). One end of the probe tube (30) extends into the ear canal, and the other end of the probe tube (30) is connected to the second microphone (22). The probe tube (30) is used to transmit the sound in the ear canal to the second microphone (22).

3. The test system according to claim 2, characterized in that: The sound pickup device (20) comprises a packaging shell (23) arranged outside the ear canal, the packaging shell (23) having a sealed cavity, the first microphone (21) and the second microphone (22) being packaged in the sealed cavity, the packaging shell (23) having a through hole communicating with the sealed cavity, and the probe (30) being connected to the second microphone (22) via the through hole.

4. The test system according to claim 3, characterized in that: Two sound pickup devices (20) are provided, and the two sound pickup devices (20) are respectively provided corresponding to two ears of the human body.

5. The test system according to any one of claims 1 to 4, characterized in that: The detection sound source (10) comprises a detection host (11), and the detection host (11) comprises a sound outlet for emitting the sound signal, wherein the sound outlet is arranged toward the human head.

6. The test system according to claim 5, characterized in that: The detection host (11) is also used to send a test audio to the first microphone (21) and the second microphone (22); the first microphone (21) and the second microphone (22) generate a third signal to be tested after receiving the test audio; and the test structure is used to detect the third signal to be tested, so as to perform a calibration test on the first microphone (21) and the second microphone (22).

7. The test system according to claim 6, characterized in that: The detection host (11) comprises a first connection part (111) arranged at the sound outlet, and the sound pickup device (20) comprises a second connection part (24) adapted to the first connection part (111), and the first connection part (111) and the second connection part (24) are detachably connected.

8. The test system according to claim 5, characterized in that: The detection sound source (10) further comprises a base (12) and a height adjustment rod (13) connected to the base (12); the detection host (11) is connected to the top of the height adjustment rod (13); the length of the height adjustment rod (13) is adjustable so as to move the detection host (11) to a preset height.

9. The test system according to claim 4, characterized in that: The test system further comprises two cables (40), wherein the two cables (40) are respectively connected to the two sound pickup devices (20), and an end of the cable (40) facing away from the sound pickup device (20) is connected to the detection sound source (10) via an audio connector (50).

10. The test system according to any one of claims 1 to 4, characterized in that: The test system also includes test glasses worn on the ears, the test glasses including a glasses frame (61) and a mounting clip (62) arranged on the glasses frame (61), and the mounting clip (62) is used to fix the sound pickup device (20) to the test glasses.

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