Open earphone ANC test fixture and system

Abstract

The utility model discloses an open earphone ANC test fixture and system, open earphone ANC test fixture includes: simulation ear, earphone support spare, including first side department and with first side department opposite second side department is set up, simulation ear is towards first side department setting, earphone support spare is equipped with the first sound passage of through first side department and second side department and second sound passage, first sound passage and second sound passage all with the receiving part opposite setting of simulation ear, second side department is used for open earphone to place to make the pronunciation part of open earphone towards first sound passage setting, and make open earphone avoid second sound passage's at least part to make second sound passage away from the one end of first side department is in the exposed state. When using the open earphone ANC test fixture of the utility model in the ACN test process to open earphone, the test environment is more close to the real use scene of user, can improve the reliability of test.

Description

Technical Field

[0001] This utility model relates to the field of headphone testing equipment technology, and in particular to an open-back headphone ANC testing fixture and system. Background Technology

[0002] In related technologies, active noise cancellation (ANC) is incorporated into headphones to improve their noise reduction performance. To verify the effectiveness of active noise cancellation, ANC testing is typically performed, requiring the headphones to be positioned on a fixture during the ANC test.

[0003] For in-ear headphones, in order to improve the reliability of test results, the fixture needs to adopt a sealed design. That is, after the in-ear headphones are positioned by the fixture, the sound-producing part of the in-ear headphones is sealed around, and the simulated ear can only pick up the sound emitted by the speaker in the in-ear headphones.

[0004] Open-back headphones use an in-ear design. When a user wears open-back headphones, the headphones do not completely seal the user's ears, which can reduce the discomfort caused by prolonged wear. Therefore, if the aforementioned fixture is used to position open-back headphones, it will not be able to effectively reproduce the user's real usage scenario, resulting in low reliability of the test results. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an open-back headphone ANC test fixture that can improve the reliability of ANC test results.

[0006] This utility model also proposes an open-type headphone ANC testing system with the above-mentioned open-type headphone ANC testing fixture.

[0007] An open-back headphone ANC testing fixture according to a first aspect of the present invention includes: a simulated ear; a headphone support member, the headphone support member including a first side portion and a second side portion disposed opposite to the first side portion, the simulated ear portion being disposed facing the first side portion, the headphone support member having a first sound port penetrating the first side portion and the second side portion, and a second sound port penetrating the first side portion and the second side portion, the first sound port and the second sound port being disposed opposite to the sound receiving portion of the simulated ear; the second side portion is used for placing an open-back headphone, such that the sound-emitting portion of the open-back headphone is disposed facing the first sound port, and the open-back headphone avoids at least a portion of the second sound port, such that the end of the second sound port away from the first side portion is exposed.

[0008] The open-type headphone ANC test fixture according to the embodiments of this utility model has at least the following beneficial effects:

[0009] When the open-back headphones to be tested are placed on the second side of the headphone support, the sound-emitting part of the open-back headphones faces the first sound port. The sound emitted by the open-back headphones through their speakers can be transmitted to the simulated ear through the first sound port. Furthermore, when the open-back headphones to be tested are placed on the second side of the headphone support, at least a portion of the open-back headphones avoids the second sound port, so that the end of the second sound port away from the first side is exposed. Thus, external sounds can be transmitted to the simulated ear through the second sound port. Therefore, when using the open-back headphones ANC test fixture of this invention during ACN testing of open-back headphones, the simulated ear can receive not only the sound emitted by the open-back headphones themselves but also the sounds of the external environment. This makes the testing environment closer to the user's actual usage scenario, improving the reliability of the test.

[0010] According to some embodiments of the present invention, the second sound port is connected to the first sound port.

[0011] According to some embodiments of the present invention, the second sound port is spaced apart from the first sound port.

[0012] According to some embodiments of the present invention, there are multiple second sound ports, and the multiple second sound ports are arranged at circumferential intervals along the first sound port.

[0013] According to some embodiments of the present invention, the second sound port includes two second sound ports A that are opposite to each other and spaced apart.

[0014] According to some embodiments of the present invention, the second sound port further includes a second sound port B; along the circumference of the first sound port, the second sound port B is disposed between the two second sound ports A.

[0015] According to some embodiments of the present invention, the second side is provided with a positioning groove for positioning the open-back headphones.

[0016] According to some embodiments of the present invention, the open-back headphone ANC test fixture further includes a positioning component, which is used to hold the open-back headphone away from the headphone support on the side away from the headphone support.

[0017] According to some embodiments of the present invention, the positioning component includes an operating handle and a pressure block connected to the operating handle, wherein the operating handle operably drives the pressure block to move toward or away from the second side.

[0018] The open-back headphone ANC testing system according to a second aspect of the present invention includes the open-back headphone ANC testing fixture described in the above embodiment.

[0019] The open-back headphone ANC testing system according to the embodiments of the present invention has at least the following beneficial effects:

[0020] In use, the open-back headphone ANC testing system of this invention allows the following configuration: When the open-back headphone to be tested is placed on the second side of the headphone support, the sound-emitting part of the open-back headphone faces the first sound port. The sound emitted by the open-back headphone through its speaker can be transmitted to the simulated ear through the first sound port. Furthermore, when the open-back headphone is placed on the second side of the headphone support, at least a portion of the open-back headphone avoids the second sound port, leaving the end of the second sound port away from the first side exposed. Thus, external sounds can be transmitted to the simulated ear through the second sound port. Therefore, when using this open-back headphone ANC testing fixture during ANC testing of open-back headphones, the simulated ear can receive not only the sound emitted by the open-back headphone itself but also sounds from the external environment. This makes the testing environment closer to the user's actual usage scenario, improving the reliability of the test.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of an open-type headphone ANC test fixture according to an embodiment of the present invention;

[0024] Figure 2 This is a partial structural schematic diagram of an open-type headphone ANC test fixture according to an embodiment of the present invention;

[0025] Figure 3 for Figure 2 A cross-sectional view of the figure shown.

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a schematic diagram of the structure of an earphone support component according to an embodiment of the present invention.

[0028] Icon labels:

[0029] 100. Simulated ear; 110. Sound receiver;

[0030] 200, Headphone support; 210, First side; 220, Second side; 230, First sound port; 240, Second sound port; 241, Second sound port A; 242, Second sound port B; 250, Positioning groove;

[0031] 300, base; 310, base plate; 320, support rod; 330, support block; 331, clearance hole;

[0032] 400, Positioning component; 410, Operating handle; 420, Pressure block. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Open-back headphones feature an in-ear design, meaning they don't completely seal off the user's ears, reducing discomfort from prolonged wear. These open-back headphones can be Bluetooth headphones or smart headphones.

[0037] like Figure 1 As shown in the figure, an embodiment of this utility model provides an ANC test fixture for open-back headphones, used to position the open-back headphones during ANC testing. The ANC (Active Noise Control) test is an active noise cancellation test that can be used to evaluate the active noise cancellation performance of open-back headphones.

[0038] like Figure 1 As shown, the open-back headphone ANC test fixture includes a simulated ear 100 and a headphone support 200.

[0039] The Simulated Ear 100 is a device that simulates the acoustic characteristics of the human ear and plays a crucial role in headphone ANC testing. When testing headphone characteristics, the Simulated Ear 100 simulates the human ear's response to sound. When sound emitted from the headphones or ambient noise enters the Simulated Ear 100, the microphone inside captures these sound signals and converts them into electrical signals for analysis and processing by the testing equipment. For example, when testing the active noise cancellation (ANC) effect of headphones, the Simulated Ear 100 can measure the difference in noise intensity entering the "inner ear" when the ANC function is turned on and off, thereby evaluating the headphone's noise cancellation performance.

[0040] It should be noted that, as existing technology, the specific structure of the simulated ear 100 will not be described in detail.

[0041] like Figure 1 As shown, the open-back headphone ANC test fixture further includes a base 300, on which a simulated ear 100 is disposed. The base 300 is used to provide support and fixation for the simulated ear 100.

[0042] Specifically, the base 300 includes a base 310, a support rod 320 disposed on the base 310, and a support block 330 disposed on the base 310, with the simulated ear 100 disposed on the support block 330.

[0043] Of course, in other embodiments, the specific structure of the base 300 can also be in other forms, which are not specifically limited here.

[0044] Combination Figure 2 , Figure 3 and Figure 4The headphone support 200 includes a first side portion 210 and a second side portion 220 disposed opposite to the first side portion 210. The headphone support 200 is provided with a first sound port 230 penetrating the first side portion 210 and the second side portion 220, and a second sound port 240 penetrating the first side portion 210 and the second side portion 220.

[0045] Understandably, the first side 210 of the headphone support 200 is its lower side, and the second side 220 of the headphone support 200 is its upper side. The headphone support 200 is disposed on the support block 330 and located above the simulated ear 100, with the simulated ear 100 facing the first side 210 of the headphone support 200. Specifically, the headphone support 200 is used to support the open-back headphone to be tested. The open-back headphone to be tested can be placed on the second side 220 of the headphone support 200 for support.

[0046] It should be noted that, in Figure 1 In the illustrated embodiment, the headphone support 200 and the simulated ear 100 are arranged in a vertical direction. In other embodiments, the headphone support 200 and the simulated ear 100 may also be arranged in a horizontal direction, or even in an inclined direction.

[0047] Combination Figure 3 and Figure 4 Furthermore, both the first sound port 230 and the second sound port 240 are positioned opposite to the sound receiving part 110 of the simulated ear 100; specifically, the end of the first sound port 230 passing through the first side portion 210 and the end of the second sound port 240 passing through the first side portion 210 are positioned opposite to the sound receiving part 110 of the simulated ear 100. The sound receiving part 110 of the simulated ear 100 refers to the part of the simulated ear 100 used to receive external sounds.

[0048] It should be noted that the support block 330 is provided with a clearance hole 331 located between the headphone support 200 and the simulated ear 100. In this way, the support block 330 can be prevented from obstructing the sound from being transmitted to the simulated ear 100 through the first sound port 230 and the second sound port 240.

[0049] When the open-back headphones to be tested are placed on the second side 220 of the headphone support 200, the sound-emitting part of the open-back headphones is positioned facing the first sound port 230. The sound emitted by the open-back headphones through their speaker can be transmitted to the simulated ear 100 through the first sound port 230. Furthermore, when the open-back headphones to be tested are placed on the second side 220 of the headphone support 200, at least a portion of the open-back headphones avoid the second sound port 240, so that the end of the second sound port 240 away from the first side 210 is exposed. Thus, external sounds can be transmitted to the simulated ear 100 through the second sound port 240. Therefore, when using the open-back headphones ANC test fixture of this invention during ACN testing of open-back headphones, the simulated ear 100 can receive not only the sound emitted by the open-back headphones themselves but also the sounds of the external environment. This makes the testing environment closer to the user's actual usage scenario, improving the reliability of the test.

[0050] like Figure 5 As shown, in some embodiments, the second sound port 240 communicates with the first sound port 230; specifically, the second sound port 240 may extend from the first side 210 of the headphone support 200 toward the second side 220 and pass through the side wall of the first sound port 230 to communicate with the first sound port 230. When the open-back headphones under test are placed on the second side 220 of the headphone support 200, the open-back headphones cover the first sound port 230 and make the sound-emitting part face the first sound port 230, while the open-back headphones do not block or completely block the end of the second sound port 240 away from the first side 210.

[0051] In other embodiments, the second sound port 240 is spaced apart from the first sound port 230; specifically, the first sound port 230 and the second sound port 240 are separated from each other and are not connected together.

[0052] like Figure 5 As shown, in some embodiments, there are multiple second sound ports 240, which are spaced apart circumferentially along the first sound port 230. This allows the sound picked up by the simulated ear 100 through each second sound port 240 to be more uniform, making the testing environment closer to the user's actual usage scenario and improving the reliability of the test.

[0053] Specifically, the second sound port 240 includes two second sound ports A241 that are opposite to each other and spaced apart. The two second sound ports A241 are symmetrically arranged.

[0054] Furthermore, the second sound port 240 also includes a second sound port B242; along the circumference of the first sound port 230, the second sound port B242 is disposed between the two second sound ports A241.

[0055] like Figure 5 As shown, in some embodiments, the second side 220 of the headphone support 200 is provided with a positioning groove 250 for positioning the open-back headphones. When the open-back headphones are placed into the positioning groove 250, the headphone support 200 can position the open-back headphones so that the sound-emitting part of the open-back headphones can be accurately positioned toward the sound-receiving part 110 of the simulated ear 100, and so that the open-back headphones avoid at least a portion of the second sound port 240 so that the end of the second sound port 240 away from the first side 210 is exposed, thereby improving testing efficiency and the reliability of test results.

[0056] It should be noted that the positioning slot 250 can adopt a contour-following design, tailored to the specific shape of open-back headphones.

[0057] like Figure 1 As shown, in some embodiments, the open-back headphone ANC test fixture also includes a positioning component 400, which is used to hold the side of the open-back headphone away from the headphone support 200, thereby enabling the open-back headphone to be fixed on the headphone support 200, which can reduce the risk of the open-back headphone shifting during the test and causing unreliable test results.

[0058] Specifically, the positioning component 400 includes an operating handle 410 and a pressure block 420 connected to the operating handle 410. The operating handle 410 can operably drive the pressure block 420 to move toward or away from the second side 220.

[0059] More specifically, the operating handle 410 is rotatably connected to the support block 330. By rotating the operating handle 410, the pressure block 420 can be rotated, thereby causing the pressure block 420 to move toward or away from the second side 220 of the headphone support 200. When the open-back headphones are placed on the second side 220 of the headphone support 200, rotating the operating handle 410 to move the pressure block 420 toward the second side 220 of the headphone support 200 can press the open-back headphones firmly, while rotating the operating handle 410 to move the pressure block 420 away from the second side 220 of the headphone support 200 can release the open-back headphones.

[0060] It should be noted that the side of the pressure block 420 near the second side 220 of the headphone support 200 is an elastic component, such as rubber, which can reduce the risk of open-back headphones being damaged by pressure.

[0061] In some other embodiments, the positioning component 400 may include a linear drive mechanism disposed on the support block 330 and a pressure block 420 connected to the linear drive mechanism. The pressure block 420 is disposed opposite to the second side 220 of the earphone support 200, and the linear drive mechanism can drive the pressure block 420 to move toward or away from the second side 220 of the earphone support 200. The linear drive mechanism may be an electric push rod or a cylinder, etc.

[0062] This utility model also provides an open-back headphone ANC testing system, including the open-back headphone ANC testing fixture described in the above embodiments.

[0063] In use, the open-back headphone ANC testing system of this invention allows the open-back headphone to be tested to be placed on the second side 220 of the headphone support 200, with the sound-emitting part of the open-back headphone facing the first sound port 230. The sound emitted by the open-back headphone through its speaker can be transmitted to the simulated ear 100 through the first sound port 230. Furthermore, when the open-back headphone is placed on the second side 220 of the headphone support 200, at least a portion of the open-back headphone avoids the second sound port 240, leaving the end of the second sound port 240 away from the first side 210 exposed. Thus, external sounds can be transmitted to the simulated ear 100 through the second sound port 240. Therefore, when using the open-back headphone ANC testing fixture of this invention during ANC testing of open-back headphone, the simulated ear 100 can receive not only the sound emitted by the open-back headphone itself but also the sounds of the external environment. This makes the testing environment closer to the user's actual usage scenario, improving the reliability of the test.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An open-back headphone ANC testing fixture, characterized in that, include: Simulated ears; The headphone support includes a first side portion and a second side portion disposed opposite to the first side portion. The simulated ear is disposed facing the first side portion. The headphone support is provided with a first sound port penetrating the first side portion and the second side portion, and a second sound port penetrating the first side portion and the second side portion. Both the first sound port and the second sound port are disposed opposite to the sound receiving portion of the simulated ear. The second side is used for placing open-back headphones, such that the sound-emitting part of the open-back headphones is positioned facing the first sound port, and the open-back headphones are positioned away from at least a portion of the second sound port so that the end of the second sound port away from the first side is exposed.

2. The open-back headphone ANC test fixture according to claim 1, characterized in that, The second sound port is connected to the first sound port.

3. The open-back headphone ANC test fixture according to claim 1, characterized in that, The second sound port is spaced apart from the first sound port.

4. The open-back headphone ANC test fixture according to claim 1, characterized in that, The number of second sound ports is multiple, and the multiple second sound ports are arranged at circumferential intervals along the first sound port.

5. The open-back headphone ANC test fixture according to claim 4, characterized in that, The second sound port includes two second sound ports A that are opposite to each other and spaced apart.

6. The open-back headphone ANC test fixture according to claim 5, characterized in that, The second sound port also includes a second sound port B; along the circumference of the first sound port, the second sound port B is disposed between the two second sound ports A.

7. The open-back headphone ANC test fixture according to claim 1, characterized in that, The second side is provided with a positioning groove for positioning the open-back headphones.

8. The open-back headphone ANC test fixture according to claim 1, characterized in that, It also includes a positioning component for supporting the open-back headphones on the side away from the headphone support.

9. The open-back headphone ANC test fixture according to claim 8, characterized in that, The positioning component includes an operating handle and a pressure block connected to the operating handle, the operating handle being operable to drive the pressure block to move toward or away from the second side.

10. An open-back headphone ANC testing system, characterized in that, Includes the open-back headphone ANC test fixture as described in any one of claims 1 to 9.

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