CN219395047U - Audio test switching device, audio test intermediate equipment and test system - Google Patents
Audio test switching device, audio test intermediate equipment and test system Download PDFInfo
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- CN219395047U CN219395047U CN202320860580.6U CN202320860580U CN219395047U CN 219395047 U CN219395047 U CN 219395047U CN 202320860580 U CN202320860580 U CN 202320860580U CN 219395047 U CN219395047 U CN 219395047U
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Abstract
The utility model discloses an audio test switching device, an audio test intermediate device and a test system, wherein the audio test switching device comprises an audio test output module used for being connected with audio test equipment, an audio test input module used for being connected with the audio equipment to be tested, and a test path switching module used for switching a connection path between an audio test output interface and the audio test input interface, the audio test output module is electrically connected with the audio test input module through the test path switching module, the audio test input module comprises at least two audio test input interfaces, and the interface types of all the audio test input interfaces in the at least two audio test input interfaces are different. The audio test switching device supports at least two audio test input interface forms corresponding to the audio test switching device, can meet audio test requirements of various forms, widens application scenes of audio test, and reduces audio test cost.
Description
Technical Field
The present utility model relates to the field of audio testing technologies, and in particular, to an audio testing switching device, an audio testing intermediate device, and a testing system.
Background
In the actual use process of the electronic product, different types of electronic products are provided with different types of audio output interfaces, such as a loudspeaker interface, an earphone interface, a receiver interface, a line out interface and the like; even some types of electronic products do not have an off-the-shelf audio interface, only reserved test points or device pads. In addition, the existing test fixture interfaces are not uniformly connected in the process of testing the quality of the audio signals, so that different audio test fixtures are required to be purchased in a matched mode when testing the audio with different interface forms, and the test cost is increased intangibly. In addition, as described above, when testing devices without existing audio interfaces, which have only reserved test points or device pads, the existing test apparatus needs to be externally added with a test board or related test circuits, and cannot be directly used, which further increases the test difficulty.
All of these cases add to the difficulty and cost of testing subsequent audio related tests of the electronic product.
Disclosure of Invention
The utility model provides an audio test switching device, audio test intermediate equipment and a test system, which can meet the audio test requirements of various forms, widen the application scene of audio test and reduce the audio test cost under multiple scenes.
In one aspect, an embodiment of the present utility model provides an audio test switching apparatus, where the audio test switching apparatus includes an audio test output module for connecting with an audio test device, an audio test input module for connecting with an audio device to be tested, and a test path switching module for switching a connection path between the audio test output module and the audio test input module, where the audio test output module is electrically connected with the audio test input module through the test path switching module;
the audio test input module comprises at least two audio test input interfaces, and the interface types of each audio test input interface in the at least two audio test input interfaces are different.
In some embodiments of the present utility model, the test path switching module includes a first switch sub-module and a second switch sub-module, and the audio test output module is electrically connected to the audio test input module through the first switch sub-module and the second switch sub-module, respectively.
In some embodiments of the present utility model, the first switch submodule includes a first switch and a second switch, the first switch and the second switch are electrically connected, the first switch is electrically connected with the audio test output module, and the second switch is electrically connected with the audio test input module;
the electric connection path of the first switch and the second switch comprises a first path and a second path, a low-pass filter circuit is arranged in the first path, the first switch is electrically connected with the second switch through the low-pass filter circuit in the first path, and the second path is a direct communication path.
In some embodiments of the present utility model, the low-pass filter circuit includes a first low-pass filter sub-circuit and a second low-pass filter sub-circuit, and the first switch is electrically connected to the second switch through the first low-pass filter sub-circuit and the second low-pass filter sub-circuit in the first path, respectively.
In some embodiments of the utility model, the first low-pass filter sub-circuit and the second low-pass filter sub-circuit are both RC filter circuits.
In some embodiments of the utility model, the first switch includes a first switch path, a second switch path, a third switch path, and a fourth switch Guan Tonglu;
the first switch further comprises a first input pin, a second input pin, a third input pin, a fourth input pin, a first output pin and a second output pin, wherein the first output pin is connected with the first input pin through a first switch path, the third input pin is connected with the third input pin through a third switch path, the second output pin is connected with the second input pin through a second switch path, the fourth input pin is connected with a fourth switch path, the first input pin and the second input pin are electrically connected with the second switch through a low-pass filter circuit in the first path, the third input pin and the fourth input pin are electrically connected with the second switch respectively, and the first output pin and the second output pin are electrically connected with the audio test output module respectively.
In some embodiments of the utility model, the second switch includes a fifth switch path, a sixth switch path, a seventh switch path, an eighth switch path, a ninth switch path, a tenth switch path, an eleventh switch path, and a twelfth switch path;
the second switch further comprises a third output pin, a fourth output pin, a fifth output pin, a sixth output pin, a fifth input pin, a sixth input pin, a seventh input pin, an eighth input pin, a ninth input pin, a tenth input pin, an eleventh input pin and a twelfth input pin;
the third output pin is connected with the fifth input pin through the fifth switch path, the seventh input pin through the seventh switch path, the ninth input pin through the ninth switch path, the eleventh input pin through the eleventh switch path, the fourth output pin is connected with the sixth input pin through the sixth switch path, the eighth input pin through the eighth switch path, the tenth input pin through the tenth switch path, the twelfth input pin through the twelfth switch path, the third output pin and the fourth output pin are respectively electrically connected with the low-pass filter circuit, the fifth output pin and the sixth output pin are respectively electrically connected with the first switch, the fifth input pin, the sixth input pin, the seventh input pin, the eighth input pin, the ninth input pin, the tenth input pin, the eleventh input pin and the twelfth input pin are respectively electrically connected with the test module.
In some embodiments of the utility model, the second switch sub-module includes a third switch electrically connected to the audio test output module and the audio test input module, respectively.
In some embodiments of the utility model, the third switch includes a thirteenth switch path, a fourteenth switch path, a fifteenth switch path, a sixteenth switch path, a seventeenth switch path, an eighteenth switch path, a nineteenth switch path, and a twentieth switch path;
the third switch further includes a seventh output pin, an eighth output pin, a ninth output pin, a tenth output pin, a thirteenth input pin, a fourteenth input pin, a fifteenth input pin, a sixteenth input pin, a seventeenth input pin, an eighteenth input pin, a nineteenth input pin, and a twentieth input pin;
the seventh output pin is connected with the thirteenth input pin through the thirteenth switching path, and is connected with the fifteenth input pin through the fifteenth switching path; the eighth output pin is connected with the fourteen input pins through the fourteen switching paths and is connected with the sixteen input pins through the sixteen switching paths; the ninth output pin is connected with the seventeenth input pin through the seventeenth switch path, and is connected with the nineteenth input pin through the nineteenth switch path; the tenth output pin is connected with the eighteenth input pin through the eighteenth switch path, and is connected with the twentieth input pin through the twentieth switch path; the seventh output pin, the eighth output pin, the ninth output pin, and the tenth output pin are respectively electrically connected with the audio test output module, and the thirteenth input pin, the fourteenth input pin, the fifteenth input pin, the sixteenth input pin, the seventeenth input pin, the eighteenth input pin, the nineteenth input pin, and the twentieth input pin are electrically connected with the audio test input module.
In some embodiments of the present utility model, the at least two audio test input interfaces include a first audio test input interface, a second audio test input interface, a third audio test input interface, and a fourth audio test input interface, where the interface types of the first audio test input interface, the second audio test input interface, the third audio test input interface, and the fourth audio test input interface are different;
the first audio test input interface, the second audio test input interface, the third audio test input interface and the fourth audio test input interface are respectively and electrically connected with the first switch submodule.
In some embodiments of the present utility model, the first audio test input interface, the second audio test input interface, the third audio test input interface, and the fourth audio test input interface are each one of an unpackaged reserved test point, a speaker interface, a receiver interface, and a line out interface.
In another aspect, the present utility model further provides an audio test intermediate apparatus, where the audio test intermediate apparatus includes the audio test switching device described in the first aspect.
In another aspect, an audio test system includes an audio test adapter and an oscilloscope, the audio test adapter being the audio test adapter of any of the first aspects, the audio test adapter being electrically connected to the oscilloscope.
The embodiment of the utility model provides an audio test switching device, an audio test intermediate device and a test system, wherein the audio test switching device comprises an audio test output module used for being connected with audio test equipment, an audio test input module used for being connected with the audio equipment to be tested, and a test path switching module used for switching a connection path between an audio test output interface and the audio test input interface, the audio test output module is electrically connected with the audio test input module through the test path switching module, the audio test input module comprises at least two audio test input interfaces, and the interface types of all the audio test input interfaces in the at least two audio test input interfaces are different. The audio test switching device in the embodiment of the utility model is used as an audio test auxiliary tool and supports one-to-many, namely, one audio test switching device is supported to correspond to at least two audio test input interface forms, thus meeting the audio test requirements of various forms, widening the application scene of audio test and reducing the audio test cost under multiple scenes.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of an audio test switching apparatus according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of another embodiment of an audio test switching apparatus according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of another embodiment of an audio test switching apparatus according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of an embodiment of an audio test switching apparatus according to an embodiment of the present utility model;
fig. 5 is a schematic diagram of another embodiment of an audio test switching apparatus according to an embodiment of the present utility model.
1, an audio test switching device; 2. an oscilloscope; 3. an audio test output module; 4. an audio test input module; 5. a test path switching module; 6. an audio device to be tested; 51. a first switch sub-module; 52. a second switch sub-module; 511. a first low pass filter sub-circuit; 512. a second low pass filter sub-circuit; SW1, a first switch; SW2, a second switch; SW3, a third switch.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
Unless explicitly described to the contrary, the word "comprise" and variations such as "comprises" or "comprising" will be understood to imply the inclusion of stated elements but not the exclusion of other elements. Further, in the specification, the word "on … …" means placed above or below the object portion, and not necessarily placed on the upper side of the object portion based on the direction of gravity.
It will be understood that, although the terms "first," "second," etc. may be used herein to describe various components, these components should not be limited by these terms. These components are only used to distinguish one component from another.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
As shown in fig. 1, the present utility model provides an audio test switching apparatus, wherein the audio test switching apparatus 1 includes an audio test output module 3 for connecting an audio test device (such as an oscilloscope 2 in fig. 1), an audio test input module 4 for connecting an audio device 6 to be tested, and a test path switching module 5 for switching a connection path between the audio test output module 3 and the audio test input module 4, and the audio test output module 3 is electrically connected with the audio test input module 4 through the test path switching module 5;
the audio test input module 4 comprises at least two audio test input interfaces, and the interface types of the audio test input interfaces in the at least two audio test input interfaces are different.
It should be noted that the interface types herein refer to audio interface types, such as a speaker interface, a headphone interface, a line out interface, etc., and the oscilloscope shown in fig. 1 is only an example of an audio test device, and it should be understood that other audio test devices may be used in other embodiments of the present utility model, such as other audio test devices that integrate similar test functions of the oscilloscope (e.g., differential signal test, left and right channel test), and are not limited herein.
The audio test switching device 1 provided by the embodiment of the utility model comprises an audio test output module 3 for connecting audio test equipment, an audio test input module 4 for connecting audio equipment 6 to be tested, and a test path switching module 5 for switching a connection path between an audio test output interface and the audio test input interface, wherein the audio test output module 3 is electrically connected with the audio test input module 4 through the test path switching module 5, the audio test input module 4 comprises at least two audio test input interfaces, and the interface types of all the audio test input interfaces in the at least two audio test input interfaces are different. According to the embodiment of the utility model, the audio test switching device 1 is used as an audio test auxiliary tool, and one-to-many is supported, namely, one audio test switching device is supported to correspond to at least two audio test input interface forms, so that the audio test requirements of various forms can be met, the application scene of audio test is widened, and the audio test cost under multiple scenes is reduced.
As shown in fig. 2, in some embodiments of the present utility model, the test path switching module 5 may include a first switch sub-module 51 and a second switch sub-module 52, and the audio test output module 3 is electrically connected to the audio test input module 4 through the first switch sub-module 51 and the second switch sub-module 52, respectively.
As shown in fig. 3, the first switch sub-module 51 may include a first switch SW1 and a second switch SW2, the first switch SW1 and the second switch SW2 being electrically connected, the first switch SW1 being electrically connected with the audio test output 3 module, and the second switch SW2 being electrically connected with the audio test input module 4.
The electrical connection path of the first switch SW1 and the second switch SW2 may include a first path and a second path, the first path is provided with a low-pass filter circuit, the first switch SW1 is electrically connected with the second switch SW2 through the low-pass filter circuit, and the second path is a direct connection path.
The low-pass filter circuit includes a first low-pass filter sub-circuit 511 and a second low-pass filter sub-circuit 512, and the first switch SW1 is electrically connected to the second switch SW2 through the first low-pass filter sub-circuit 511 and the second low-pass filter sub-circuit 512 in the first path.
At present, based on different audio devices, the types of audio signals output by the audio devices may be different, and common audio signals include class AB audio signal test, class D audio signal and the like, wherein the class AB audio signal may be a sine wave signal, and the class D audio signal may be a square wave signal.
Because two paths are arranged between the first switch SW1 and the second switch SW2, one direct communication path is used for testing AB class audio signals, H class audio signals and K class audio signals working in an AB class mode; and the added low-pass filter circuit is used for restoring the class D audio signal or the class K audio signal working in the class D mode into the class AB audio signal. Therefore, the method can not only meet the testing of AB audio signals and H audio signals, but also be used for testing D audio signals and K audio signals, and further widen the application scene of the audio test switching device.
In some embodiments of the present utility model, the first low-pass filter sub-circuit 511 and the second low-pass filter sub-circuit 512 may be RC filter circuits, or may be other types of low-pass filter circuits, for example, low-pass filter circuits such as CL, LC, CRC, RCR, LCL, DLC, where the first low-pass filter sub-circuit 511 and the second low-pass filter sub-circuit 512 may be the same low-pass filter circuit, or may be different low-pass filter circuits, and are not limited herein.
As shown in fig. 4, in some embodiments of the present utility model, the first switch SW1 may include a first switch path, a second switch path, a third switch path and a fourth switch path.
The first switch SW1 may further include a first input pin, a second input pin, a third input pin, a fourth input pin, a first output pin and a second output pin, where the first output pin is connected to the first input pin through a first switch path, the third input pin is connected to the second input pin through a third switch path, the second output pin is connected to the second input pin through a second switch path, the fourth input pin is connected to the fourth input pin through a fourth switch path, the first input pin and the second input pin are electrically connected to the second switch SW2 through a low-pass filter circuit in the first path, the third input pin and the fourth input pin are respectively electrically connected to the second switch SW2, and the first output pin and the second output pin are respectively electrically connected to the audio test output module 3.
In other embodiments of the present utility model, the second switch SW2 may include a fifth switch path, a sixth switch path, a seventh switch path, an eighth switch path, a ninth switch path, a tenth switch path, an eleventh switch path and a twelfth switch path.
The second switch SW2 may further include a third output pin, a fourth output pin, a fifth output pin, a sixth output pin, a fifth input pin, a sixth input pin, a seventh input pin, an eighth input pin, a ninth input pin, a tenth input pin, an eleventh input pin, and a twelfth input pin.
Specifically, the third output pin is connected to the fifth input pin through the fifth switch path, is connected to the seventh input pin through the seventh switch path, is connected to the ninth input pin through the ninth switch path, is connected to the eleventh input pin through the eleventh switch path, is connected to the sixth input pin through the sixth switch path, is connected to the eighth input pin through the eighth switch path, is connected to the tenth input pin through the tenth switch path, is electrically connected to the twelfth input pin through the twelfth switch path, is electrically connected to the low-pass filter circuit, and is electrically connected to the first switch SW1, and is electrically connected to the fifth input pin, the sixth input pin, the seventh input pin, the eighth input pin, the ninth input pin, the tenth input pin, the eleventh input pin and the twelfth input pin, respectively.
As shown in fig. 4 and 5, in the embodiment of the present utility model, the audio test output module 3 includes an audio test output interface, and the audio test output interface may include 6 output pins and 6 input pins, and the audio test input module may include 6 audio test input interfaces.
Specifically, in some embodiments of the present utility model, the at least two audio test input interfaces include a first audio test input interface, a second audio test input interface, a third audio test input interface, and a fourth audio test input interface, where the interface types of the first audio test input interface, the second audio test input interface, the third audio test input interface, and the fourth audio test input interface are different; the first audio test input interface, the second audio test input interface, the third audio test input interface and the fourth audio test input interface are respectively and electrically connected with the first switch submodule.
In some embodiments of the present utility model, the first audio test input interface, the second audio test input interface, the third audio test input interface, and the fourth audio test input interface are respectively one of an unpackaged reserved test point, a speaker interface, a receiver interface, and a line out interface, which are reserved as shown in fig. 4 and fig. 5, and are a reserved test point, B interface, C interface, and D interface, so that more different types of audio test scenarios can be compatible through more audio test interface settings.
In other embodiments of the present utility model, the at least two audio test input interfaces may further include a fifth audio test input interface and a sixth audio test input interface, such as the E interface and the reserved c, d, E, f test point shown in fig. 5, which further expands the application range of the audio test.
As shown in fig. 4 and 5, in other embodiments of the present utility model, the second switch sub-module may include a third switch SW3, and the third switch SW3 is electrically connected to the audio test output module (a interface in fig. 5) and the audio test input module, respectively.
The third switch SW3 may include a thirteenth switch path, a fourteenth switch path, a fifteenth switch path, a sixteenth switch path, a seventeenth switch path, an eighteenth switch path, a nineteenth switch path and a twentieth switch path.
The third switch SW3 may further include a seventh output pin, an eighth output pin, a ninth output pin, a tenth output pin, a thirteenth input pin, a fourteenth input pin, a fifteenth input pin, a sixteenth input pin, a seventeenth input pin, an eighteenth input pin, a nineteenth input pin and a twentieth input pin;
specifically, the seventh output pin is connected to the thirteenth input pin through a thirteenth switching path, and is connected to the fifteenth input pin through a fifteenth switching path; the eighth output pin is connected with the fourteen input pins through a fourteen switching path and is connected with the sixteen input pins through a sixteen switching path; the ninth output pin is connected with the seventeenth input pin through a seventeenth switching path, and is connected with the nineteenth input pin through a nineteenth switching path; the tenth output pin is connected with the eighteenth input pin through an eighteenth switch path and is connected with the twentieth input pin through a twentieth switch path; the seventh output pin, the eighth output pin, the ninth output pin and the tenth output pin are respectively and electrically connected with the audio test output module, and the thirteenth input pin, the fourteenth input pin, the fifteenth input pin, the sixteenth input pin, the seventeenth input pin, the eighteenth input pin, the nineteenth input pin and the twenty-first input pin are electrically connected with the audio test input module.
In some embodiments of the present utility model, the seventh output pin of the third switch SW3 is electrically connected to the first pin of the audio test output module, the eighth output pin of the third switch SW3 is electrically connected to the second pin of the audio test output module, the ninth output pin of the third switch SW3 is electrically connected to the third pin of the audio test output module, the tenth output pin of the third switch SW3 is electrically connected to the fourth pin of the audio test output module, and the first output pin and the second output pin of the first switch SW1 are electrically connected to the fifth pin and the sixth pin of the audio test output module, respectively.
In other embodiments of the present utility model, the thirteenth input pin, the fourteenth input pin, the fifteenth input pin, and the sixteenth input pin of the third switch SW3 are electrically connected to the fifth audio test input interface (e.g., the E interface in fig. 5), respectively, the seventeenth input pin, the eighteenth input pin, the nineteenth input pin, and the twentieth input pin of the third switch SW3 are electrically connected to the sixth audio test input interface of the audio test input module (i.e., the reserved test points C, D, E, f in fig. 5, respectively), respectively, while the fifth input pin and the sixth input pin of the second switch SW2 are electrically connected to the first audio test input interface (e.g., the a and B reserved test points in fig. 5), respectively, of the audio test input module, the seventh input pin and the eighth input pin of the second switch SW2 are electrically connected to the second audio test input interface (e.g., the B interface in fig. 5), respectively, the ninth input pin and the tenth input pin of the second switch SW2 are electrically connected to the third audio test input interface (e.g., the C interface in fig. 5), respectively, and the twelfth input pin of the fourth switch SW2 is electrically connected to the fourth audio test input interface (e.g., the D interface in fig. 5).
The audio test switching apparatus of the present utility model will be described with reference to an embodiment.
As shown in fig. 4 and 5, fig. 5 shows a schematic test diagram in a specific embodiment, and U1 shows an oscilloscope apparatus for testing; the system is used for collecting audio signals and sending the audio signals to the oscilloscope; u2 is an audio test switching device (such as an audio power test board) in the utility model; b, C, D, E four interfaces, represent the interface of the loudspeaker specifically, interface of the earphone, line out interface, earphone interface, etc. audio interface, is used for switching the audio frequency to input the test signal; the a interface represents the final output audio signal. a, b represent differential audio test points, c, d, e, f represent left and right channel audio test points, which are mainly used for testing devices with only reserved test points or device pads. 11 12, 13, 14, 15, 16 refer to audio devices to be tested using different audio interfaces, respectively.
The existing test flow is tested under the condition of no U2, so that different audio test jigs are needed for different test equipment, and the equipment cost of the test is greatly increased. After the U2 is used, different audio interface devices can be simultaneously supported to be converted into the same interface, and the test requirements of different interfaces and under the condition can be met by only using one audio test fixture during test. And for the situation that the audio signal output by the class D cannot be measured by directly using an oscilloscope and is required to be tested after a low-pass filter circuit is additionally arranged, the test can be directly performed by directly using the low-pass filter circuit which is compatible with the design on U2.
The specific working flow is as follows: assuming that the existing equipment needs to perform audio test, a tester can perform flexible interface selection according to the type of audio signals output by the test equipment, and the existing audio test fixture does not need to be concerned about what interface is supported. After the test equipment is connected through the power test board, the test can be started. Through the signal switch on the manual selection test board, finally with input signal export audio test tool through A mouth.
In addition, the power test board also provides a method for separating and testing the AB type audio signal and the D type audio signal, for example, two paths are arranged between the first switch SW1 and the second switch SW2 in FIG. 5, and one direct communication path is used for testing the AB type audio signal, the H type audio signal and the K type audio signal working in the AB type mode; and the added low-pass filter circuit is used for restoring the class D audio signal or the class K audio signal working in the class D mode into the class AB audio signal. Therefore, the method can not only meet the testing of AB class audio signals and H class audio signals, but also be used for testing D class audio signals and K class audio signals.
In order to facilitate better implementation of the audio test switching device provided by the embodiment of the utility model, the embodiment of the utility model also provides an improved audio test intermediate device based on the audio test switching device. Where the meaning of the terms is the same as in the above-described audio test transition device, reference may be made to the description of the above embodiments for specific implementation details.
In order to better implement the audio test switching device provided by the embodiment of the utility model, the embodiment of the utility model also provides an improved audio test system based on the audio test switching device, the audio test system comprises an audio test switching device and an oscilloscope, the audio test switching device is the audio test switching device as described in the embodiment, and the audio test switching device is electrically connected with the oscilloscope. The meaning of the term is the same as that in the above-mentioned audio test switching device, and specific implementation details can be referred to in the description of the method embodiment.
The foregoing describes in detail an audio test switching apparatus, an audio test intermediate device and a test system provided by the embodiments of the present utility model, and specific examples are applied to illustrate the principles and embodiments of the present utility model, where the foregoing examples are only used to help understand the method and core idea of the present utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.
Claims (10)
1. The audio test switching device is characterized by comprising an audio test output module used for being connected with audio test equipment, an audio test input module used for being connected with the audio equipment to be tested, and a test path switching module used for switching a connection path between the audio test output module and the audio test input module, wherein the audio test output module is electrically connected with the audio test input module through the test path switching module;
the audio test input module comprises at least two audio test input interfaces, and the interface types of each audio test input interface in the at least two audio test input interfaces are different.
2. The audio test switching device of claim 1, wherein the test path switching module comprises a first switch sub-module and a second switch sub-module, and the audio test output module is electrically connected to the audio test input module through the first switch sub-module and the second switch sub-module, respectively.
3. The audio test switching device of claim 2, wherein the first switch sub-module comprises a first switch and a second switch, the first switch and the second switch are electrically connected, the first switch is electrically connected with the audio test output module, and the second switch is electrically connected with the audio test input module;
the electric connection path of the first switch and the second switch comprises a first path and a second path, a low-pass filter circuit is arranged in the first path, the first switch is electrically connected with the second switch through the low-pass filter circuit in the first path, and the second path is a direct communication path.
4. The audio test switching device of claim 3, wherein the low pass filter circuit comprises a first low pass filter sub-circuit and a second low pass filter sub-circuit, the first switch being electrically connected to the second switch at the first path through the first low pass filter sub-circuit and the second low pass filter sub-circuit, respectively.
5. The audio test switching device of claim 4, wherein the first low pass filter sub-circuit and the second low pass filter sub-circuit are RC filter circuits.
6. The audio test switching device of claim 2, wherein the second switch sub-module includes a third switch electrically connected to the audio test output module and the audio test input module, respectively.
7. The audio test switching apparatus of any of claims 2 to 6 wherein at least two of the audio test input interfaces comprise a first audio test input interface, a second audio test input interface, a third audio test input interface and a fourth audio test input interface, the first audio test input interface, the second audio test input interface, the third audio test input interface and the fourth audio test input interface each being of a different interface type;
the first audio test input interface, the second audio test input interface, the third audio test input interface and the fourth audio test input interface are respectively and electrically connected with the first switch submodule.
8. The audio test switching device of claim 7, wherein the first audio test input interface, the second audio test input interface, the third audio test input interface, and the fourth audio test input interface are each one of an unpackaged reserved test point, a speaker interface, a earpiece interface, and a line out interface.
9. An audio test intermediate device, characterized in that it comprises an audio test switching means according to any of claims 1 to 8.
10. An audio test system comprising an audio test adapter and an oscilloscope, wherein the audio test adapter is an audio test adapter according to any one of claims 1 to 8, and wherein the audio test adapter is electrically connected to the oscilloscope.
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| CN202320860580.6U CN219395047U (en) | 2023-04-17 | 2023-04-17 | Audio test switching device, audio test intermediate equipment and test system |
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| CN202320860580.6U CN219395047U (en) | 2023-04-17 | 2023-04-17 | Audio test switching device, audio test intermediate equipment and test system |
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| CN219395047U true CN219395047U (en) | 2023-07-21 |
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| CN202320860580.6U Active CN219395047U (en) | 2023-04-17 | 2023-04-17 | Audio test switching device, audio test intermediate equipment and test system |
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