技术领域technical field
本实用新型涉及音频测试技术领域，尤其涉及一种音频测试转接装置、音频测试中间设备及测试系统。The utility model relates to the technical field of audio testing, in particular to an audio testing switching device, audio testing intermediate equipment and a testing system.
背景技术Background technique
在电子产品实际使用过程中，不同类型的电子类产品有不同类型的音频输出接口，比如扬声器接口，耳机接口，听筒接口，line out接口等；甚至部分类型电子产品还没有现成的音频接口，只有预留的测试点或器件焊盘。此外现有的在测试音频信号质量过程中，并没有统一的连接测试治具接口，这就造成了在测试不同接口形态的音频时，需要配套购买不同的音频测试治具，无形中增加了测试成本。另外如上述所述当对没有现成的音频接口，只有预留的测试点或器件焊盘的设备进行测试时，现有的测试装置需要外部增加测试板或相关测试电路，且无法直接使用，进一步增加了测试难度。In the actual use of electronic products, different types of electronic products have different types of audio output interfaces, such as speaker jacks, headphone jacks, handset jacks, line out jacks, etc.; even some types of electronic products do not have ready-made audio jacks, only reserved test points or device pads. In addition, in the process of testing audio signal quality, there is no unified connection test fixture interface, which results in the need to purchase different audio test fixtures when testing audio with different interface forms, which virtually increases the test cost. In addition, as mentioned above, when testing a device that has no ready-made audio interface but only reserved test points or device pads, the existing test device needs to add a test board or related test circuits externally, and cannot be used directly, which further increases the difficulty of testing.
这些情况都对后续电子产品进行音频相关测试增加了测试难度和测试成本。All of these situations increase the difficulty and cost of testing audio-related testing of subsequent electronic products.
实用新型内容Utility model content
本实用新型提供一种音频测试转接装置、音频测试中间设备及测试系统，可满足多种形态的音频测试需求，拓宽了音频测试的应用场景，降低了多场景下音频测试成本。The utility model provides an audio test switching device, an audio test intermediate device and a test system, which can meet various forms of audio test requirements, broaden the application scenarios of audio tests, and reduce the cost of audio tests in multiple scenarios.
一方面，本实用新型实施例提供一种音频测试转接装置，所述音频测试转接装置包括用于连接音频测试设备的音频测试输出模块，用于连接待测试音频设备的音频测试输入模块，以及用于切换所述音频测试输出模块和所述音频测试输入模块之间连接通路的测试通路切换模块，所述音频测试输出模块通过所述测试通路切换模块与所述音频测试输入模块电连接；On the one hand, the embodiment of the present utility model provides an audio test adapter device, the audio test adapter device includes an audio test output module for connecting to audio test equipment, an audio test input module for connecting to the audio equipment to be tested, and a test path switching module for switching the connection path between the audio test output module and the audio test input module, and the audio test output module is electrically connected to the audio test input module through the test path switching module;
所述音频测试输入模块包括至少两个音频测试输入接口，至少两个所述音频测试输入接口中各音频测试输入接口的接口类型不同。The audio test input module includes 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.
在本实用新型一些实施例中，所述测试通路切换模块包括第一开关子模块和第二开关子模块，所述音频测试输出模块分别通过所述第一开关子模块和第二开关子模块与所述音频测试输入模块电连接。In some embodiments of the present invention, the test path switching module includes a first switch submodule and a second switch submodule, and the audio test output module is electrically connected to the audio test input module through the first switch submodule and the second switch submodule respectively.
在本实用新型一些实施例中，所述第一开关子模块包括第一开关和第二开关，所述第一开关和所述第二开关电连接，所述第一开关与所述音频测试输出模块电连接，所述第二开关与所述音频测试输入模块电连接；In some embodiments of the present utility model, the first switch submodule includes a first switch and a second switch, the first switch is electrically connected to the second switch, the first switch is electrically connected to the audio test output module, and the second switch is electrically connected to the audio test input module;
所述第一开关和所述第二开关的电连接通路包括第一通路和第二通路，所述第一通路中设置有低通滤波电路，所述第一开关在所述第一通路通过所述低通滤波电路与所述第二开关的电连接，所述第二通路为直连通路。The electrical connection path between the first switch and the second switch includes a first path and a second path, the first path is provided with a low-pass filter circuit, the first switch is electrically connected to the second switch through the low-pass filter circuit in the first path, and the second path is a direct connection path.
在本实用新型一些实施例中，所述低通滤波电路包括第一低通滤波子电路和第二低通滤波子电路，所述第一开关在所述第一通路通过所述第一低通滤波子电路和所述第二低通滤波子电路分别与所述第二开关电连接。In some embodiments of the present invention, 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.
在本实用新型一些实施例中，所述第一低通滤波子电路和所述第二低通滤波子电路均为RC滤波电路。In some embodiments of the present invention, the first low-pass filter sub-circuit and the second low-pass filter sub-circuit are both RC filter circuits.
在本实用新型一些实施例中，所述第一开关包括第一开关通路、第二开关通路、第三开关通路和第四开关通路；In some embodiments of the present utility model, the first switch includes a first switch path, a second switch path, a third switch path and a fourth switch path;
所述第一开关还包括第一输入引脚、第二输入引脚、第三输入引脚、第四输入引脚、第一输出引脚和第二输出引脚，所述第一输出引脚通过所述第一开关通路连接所述第一输入引脚，通过所述第三开关通路连接所述第三输入引脚，所述第二输出引脚通过所述第二开关通路连接所述第二输入引脚，通过所述第四开关通路连接所述第四输入引脚，所述第一输入引脚、所述第二输入引脚在所述第一通路通过所述低通滤波电路与所述第二开关的电连接，所述第三输入引脚、所述第四输入引脚分别与所述第二开关电连接，所述第一输出引脚、所述第二输出引脚分别与所述音频测试输出模块电连接。The first switch also includes 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. The first output pin is connected to the first input pin through the first switch path, connected to the third input pin through the third switch path, connected to the second input pin through the second switch path, and connected to the fourth input pin through the fourth switch path. The first input pin and the second input pin are electrically connected to the second switch through the low-pass filter circuit in the first path. The switch is electrically connected, and the first output pin and the second output pin are respectively electrically connected to the audio test output module.
在本实用新型一些实施例中，所述第二开关包括第五开关通路、第六开关通路、第七开关通路、第八开关通路、第九开关通路、第十开关通路、第十一开关通路和第十二开关通路；In some embodiments of the present 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;
所述第二开关还包括第三输出引脚、第四输出引脚、第五输出引脚、第六输出引脚、第五输入引脚、第六输入引脚、第七输入引脚、第八输入引脚、第九输入引脚、第十输入引脚、第十一输入引脚和第十二输入引脚；The second switch further includes 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;
所述第三输出引脚通过所述第五开关通路连接所述第五输入引脚，通过所述第七开关通路连接所述第七输入引脚，通过所述第九开关通路连接所述第九输入引脚，通过所述第十一开关通路连接所述第十一输入引脚，所述第四输出引脚通过所述第六开关通路连接所述第六输入引脚，通过所述第八开关通路连接所述第八输入引脚，通过所述第十开关通路连接所述第十输入引脚，通过所述第十二开关通路连接所述第十二输入引脚，所述第三输出引脚和所述第四输出引脚分别与所述低通滤波电路电连接，所述第五输出引脚和所述第六输出引脚分别与所述第一开关电连接，所述第五输入引脚、所述第六输入引脚、所述第七输入引脚、所述第八输入引脚、所述第九输入引脚、所述第十输入引脚、所述第十一输入引脚和所述第十二输入引脚与所述音频测试输入模块电连接。The third output pin is connected to the fifth input pin through the fifth switch path, connected to the seventh input pin through the seventh switch path, connected to the ninth input pin through the ninth switch path, connected to the eleventh input pin through the eleventh switch path, connected to the sixth input pin through the sixth switch path, connected to the eighth input pin through the eighth switch path, connected to the tenth input pin through the tenth switch path, connected to the twelfth input pin through the twelfth switch path, the third output pin and the fourth output pin are electrically connected to the low-pass filter circuit, respectively, The output pin and the sixth output pin are respectively electrically connected to the first switch, and 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 electrically connected to the audio test input module.
在本实用新型一些实施例中，所述第二开关子模块包括第三开关，所述第三开关分别与所述音频测试输出模块和所述音频测试输入模块电连接。In some embodiments of the present invention, the second switch sub-module includes a third switch, and the third switch is electrically connected to the audio test output module and the audio test input module respectively.
在本实用新型一些实施例中，所述第三开关包括第十三开关通路、第十四开关通路、第十五开关通路、第十六开关通路、第十七开关通路、第十八开关通路、第十九开关通路和第二十开关通路；In some embodiments of the present 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;
所述第三开关还包括第七输出引脚、第八输出引脚、第九输出引脚、第十输出引脚、第十三输入引脚、第十四输入引脚、第十五输入引脚、第十六输入引脚、第十七输入引脚、第十八输入引脚、第十九输入引脚和第二十输入引脚；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;
所述第七输出引脚通过所述第十三开关通路连接所述第十三输入引脚，通过所述第十五开关通路连接所述第十五输入引脚；所述第八输出引脚通过所述十四开关通路连接所述十四输入引脚，通过所述十六开关通路连接所述十六输入引脚；所述第九输出引脚通过所述第十七开关通路连接所述第十七输入引脚，通过所述第十九开关通路连接所述第十九输入引脚；所述第十输出引脚通过所述十八开关通路连接所述十八输入引脚，通过所述二十开关通路连接所述第二十输入引脚；所述第七输出引脚、所述第八输出引脚、所述第九输出引脚、所述第十输出引脚分别与所述音频测试输出模块电连接，所述第十三输入引脚、所述第十四输入引脚、所述第十五输入引脚、所述第十六输入引脚、所述第十七输入引脚、所述第十八输入引脚、所述第十九输入引脚和所述第二十输入引脚与所述音频测试输入模块电连接。The seventh output pin is connected to the thirteenth input pin through the thirteenth switch path, connected to the fifteenth input pin through the fifteenth switch path; the eighth output pin is connected to the fourteenth input pin through the fourteenth switch path, and connected to the sixteenth input pin through the sixteenth switch path; the ninth output pin is connected to the seventeenth input pin through the seventeenth switch path, and connected to the nineteenth input pin through the nineteenth switch path; pin, the ninth output pin, and the tenth output pin are respectively electrically connected to 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 to the audio test input module.
在本实用新型一些实施例中，至少两个所述音频测试输入接口包括第一音频测试输入接口、第二音频测试输入接口、第三音频测试输入接口和第四音频测试输入接口，所述第一音频测试输入接口、所述第二音频测试输入接口、所述第三音频测试输入接口和所述第四音频测试输入接口的接口类型均不相同；In some embodiments of the present utility model, at least two of the 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, and 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 all different;
所述第一音频测试输入接口、所述第二音频测试输入接口、所述第三音频测试输入接口和所述第四音频测试输入接口分别与所述第一开关子模块电连接。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 electrically connected to the first switch sub-module.
在本实用新型一些实施例中，所述第一音频测试输入接口、所述第二音频测试输入接口、所述第三音频测试输入接口和所述第四音频测试输入接口分别为未封装的预留测试点、扬声器接口，听筒接口，line out接口中一种。In some embodiments of the present invention, 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 unpackaged reserved test points, speaker interfaces, earpiece interfaces, and line out interfaces.
另一方面，本实用新型还提供一种音频测试中间设备，所述音频测试中间设备包括如第一方面中所述的音频测试转接装置。On the other hand, the utility model also provides an audio test intermediate device, which includes the audio test transfer device as described in the first aspect.
另一方面，一种音频测试系统，所述音频测试系统包括音频测试转接装置和示波器，所述音频测试转接装置为如第一方面中任一项所述的音频测试转接装置，所述音频测试转接装置与所述示波器电连接。In another aspect, an audio test system includes an audio test adapter and an oscilloscope, the audio test adapter is the audio test adapter according to any one of the first aspect, and the audio test adapter is electrically connected to the oscilloscope.
本实用新型实施例提供一种音频测试转接装置、音频测试中间设备及测试系统，其中音频测试转接装置包括用于连接音频测试设备的音频测试输出模块，用于连接待测试音频设备的音频测试输入模块，以及用于切换音频测试输出接口和音频测试输入接口之间连接通路的测试通路切换模块，音频测试输出模块通过测试通路切换模块与所述音频测试输入模块电连接音频测试输入模块包括至少两个音频测试输入接口，至少两个音频测试输入接口中各音频测试输入接口的接口类型不同。本实用新型实施例中音频测试转接装置作为音频测试辅助工具，支持一对多，即支持一种音频测试转接装置对应至少两种音频测试输入接口形式，可满足多种形态的音频测试需求，拓宽了音频测试的应用场景，降低了多场景下音频测试成本。The embodiment of the utility model provides an audio test adapter device, an audio test intermediate device and a test system, wherein the audio test adapter device includes an audio test output module for connecting the audio test equipment, an audio test input module for connecting the audio equipment to be tested, and a test path switching module for switching the connection path between the audio test output interface and the audio test input interface. The audio test output module is electrically connected to the audio test input module through the test path switching module. The audio test input module includes at least two audio test input interfaces. In the embodiment of the utility model, the audio test adapter device is used as an audio test auxiliary tool and supports one-to-many, that is, one audio test adapter device corresponds to at least two audio test input interface forms, which can meet various forms of audio test requirements, broaden the application scenarios of audio tests, and reduce the cost of audio tests in multiple scenarios.
附图说明Description of drawings
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other accompanying drawings can also be obtained according to these drawings without paying creative work.
图1是本实用新型实施例提供的音频测试转接装置的一个实施例示意图；Fig. 1 is a schematic diagram of an embodiment of the audio test adapter device provided by the embodiment of the present invention;
图2是本实用新型实施例提供的音频测试转接装置的另一个实施例示意图；Fig. 2 is a schematic diagram of another embodiment of the audio test adapter device provided by the embodiment of the present invention;
图3是本实用新型实施例提供的音频测试转接装置的另一个实施例示意图；Fig. 3 is a schematic diagram of another embodiment of the audio test adapter device provided by the embodiment of the present invention;
图4是本实用新型实施例提供的音频测试转接装置的一个具体实施例示意图；Fig. 4 is a schematic diagram of a specific embodiment of the audio test adapter device provided by the embodiment of the present invention;
图5是本实用新型实施例提供的音频测试转接装置的另一个具体实施例示意图。Fig. 5 is a schematic diagram of another specific embodiment of the audio test adapter device provided by the embodiment of the present invention.
其中，1、音频测试转接装置；2、示波器；3、音频测试输出模块；4、音频测试输入模块；5、测试通路切换模块；6、待测试音频设备；51、第一开关子模块；52、第二开关子模块；511、第一低通滤波子电路；512、第二低通滤波子电路；SW1、第一开关；SW2、第二开关；SW3、第三开关。Among them, 1. Audio test adapter device; 2. Oscilloscope; 3. Audio test output module; 4. Audio test input module; 5. Test channel switching module; 6. Audio equipment to be tested; 51. First switch sub-module;
具体实施方式Detailed ways
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present utility model.
除非相反地明确描述，否则词语“包括”及其像“包含”或“含有”这样的变体将被理解为暗含包括所论述的元件，但不一定排除其它元件。进一步，在说明书中，词语“在……上”指放置在对象部分上方或下方，而不一定指基于重力方向放置在对象部分的上侧。Unless expressly stated to the contrary, the word "comprise" and variations thereof such as "comprises" or "comprises" will be understood to imply the inclusion of the elements discussed, but not necessarily to the exclusion of other elements. Further, in the specification, the word "on" means to be placed above or below the object part, not necessarily to be placed on the upper side of the object part based on the direction of gravity.
将理解的是，尽管在本文中可以使用术语“第一”,“第二”等来描述各种组件,但是这些组件不应受到这些术语的限制。这些组件仅用于区分一个组件和另一个组件。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.
本技术领域技术人员可以理解，除非特意声明，这里使用的单数形式“一”、“一个”、“所述”和“该”也可包括复数形式。应该进一步理解的是，本实用新型的说明书中使用的措辞“包括”是指存在所述特征、整数、步骤、操作、元件和/或组件，但是并不排除存在或添加一个或多个其他特征、整数、步骤、操作、元件、组件和/或它们的组。应该理解，当我们称元件被“连接”或“耦接”到另一元件时，它可以直接连接或耦接到其他元件，或者也可以存在中间元件。此外，这里使用的“连接”或“耦接”可以包括无线连接或无线耦接。这里使用的措辞“和/或”包括一个或更多个相关联的列出项的全部或任一单元和全部组合。Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the wording "comprising" used in the description of the present utility model refers to the presence of the features, integers, steps, operations, elements and/or components, but does not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components and/or their groups. 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. Additionally, "connected" or "coupled" as used herein may include wireless connection or wireless coupling. The expression "and/or" used herein includes all or any elements and all combinations of one or more associated listed items.
如图1所示，本实用新型提供一种音频测试转接装置，音频测试转接装置1包括用于连接音频测试设备(如图1中示波器2)的音频测试输出模块3，用于连接待测试音频设备6的音频测试输入模块4，以及用于切换音频测试输出模块3和音频测试输入模块4之间连接通路的测试通路切换模块5，音频测试输出模块3通过测试通路切换模块5与音频测试输入模块4电连接；As shown in Figure 1, the utility model provides a kind of audio test adapter device, audio test adapter device 1 comprises the audio test output module 3 that is used to connect audio test equipment (such as oscilloscope 2 in Figure 1), is used to connect the audio test input module 4 of audio equipment 6 to be tested, and is used to switch the test path switch module 5 of the connection path between the audio test output module 3 and the audio test input module 4, the audio test output module 3 is electrically connected with the audio test input module 4 through the test path switch module 5;
音频测试输入模块4包括至少两个音频测试输入接口，至少两个音频测试输入接口中各音频测试输入接口的接口类型不同。The audio test input module 4 includes 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.
需要说明的，此处的接口类型指的是音频接口类型，例如扬声器接口，耳机接口，听筒接口，line out接口等，图1中所示的示波器仅为音频测试设备的举例，可以理解的是，在本实用新型其他实施例中可以是其它音频测试设备，例如集成示波器类似测试功能(如差分信号测试、左右声道测试)的其它音频测试设备，具体此处不作限定。It should be noted that the interface type here refers to the audio interface type, such as a speaker interface, an earphone interface, a receiver interface, a line out interface, etc. The oscilloscope shown in Figure 1 is only an example of an audio test device. It can be understood that in other embodiments of the present invention, it can be other audio test devices, such as other audio test devices that integrate oscilloscope similar test functions (such as differential signal testing, left and right channel testing), and are specifically not limited here.
本实用新型实施例提供的音频测试转接装置1，包括用于连接音频测试设备的音频测试输出模块3，用于连接待测试音频设备6的音频测试输入模块4，以及用于切换音频测试输出接口和音频测试输入接口之间连接通路的测试通路切换模块5，音频测试输出模块3通过测试通路切换模块5与音频测试输入模块4电连接，音频测试输入模块4包括至少两个音频测试输入接口，至少两个音频测试输入接口中各音频测试输入接口的接口类型不同。本实用新型实施例中音频测试转接装置1作为音频测试辅助工具，支持一对多，即支持一种音频测试转接装置对应至少两种音频测试输入接口形式，可满足多种形态的音频测试需求，拓宽了音频测试的应用场景，降低了多场景下音频测试成本。The audio test adapter device 1 provided by the embodiment of the present utility model includes an audio test output module 3 for connecting to audio test equipment, an audio test input module 4 for connecting to the audio equipment to be tested 6, and a test path switching module 5 for switching the connection path between the audio test output interface and the audio test input interface. The audio test output module 3 is electrically connected to the audio test input module 4 through the test path switching module 5. The audio test input module 4 includes 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 the embodiment of the utility model, the audio test adapter device 1 is used as an audio test auxiliary tool, and supports one-to-many, that is, supports one audio test adapter device corresponding to at least two types of audio test input interface forms, which can meet various forms of audio test requirements, broaden the application scenarios of audio tests, and reduce the cost of audio tests in multiple scenarios.
如图2所示，在本实用新型一些实施例中，测试通路切换模块5可以包括第一开关子模块51和第二开关子模块52，音频测试输出模块3分别通过第一开关子模块51和第二开关子模块52与音频测试输入模块4电连接。As shown in Figure 2, in some embodiments of the present invention, the test path switching module 5 may include a first switch submodule 51 and a second switch submodule 52, and the audio test output module 3 is electrically connected to the audio test input module 4 through the first switch submodule 51 and the second switch submodule 52 respectively.
如图3所示，第一开关子模块51可以包括第一开关SW1和第二开关SW2，第一开关SW1和第二开关SW2电连接，第一开关SW1与音频测试输出3模块电连接，第二开关SW2与音频测试输入模块4电连接。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 are electrically connected, the first switch SW1 is electrically connected to the audio test output 3 module, and the second switch SW2 is electrically connected to the audio test input module 4.
第一开关SW1和第二开关SW2的电连接通路可以包括第一通路和第二通路，第一通路中设置有低通滤波电路，第一开关SW1在第一通路通过低通滤波电路与第二开关SW2电连接，第二通路为直连通路。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 to the second switch SW2 through the low-pass filter circuit in the first path, and the second path is a direct connection path.
其中，低通滤波电路包括第一低通滤波子电路511和第二低通波子电路512，第一开关SW1在第一通路通过第一低通滤波子电路511和第二低通滤波子电路512分别与第二开关SW2电连接。Wherein, 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 respectively in the first path.
目前基于音频设备的不同，音频设备输出的音频信号类型也可能不同，常见的音频信号包括AB类音频信号测试，D类音频信号等，其中，AB类音频信号可以为正弦波信号，D类音频信号可以为方波信号。At present, based on different audio devices, the types of audio signals output by audio devices may also be different. Common audio signals include Class AB audio signal test, Class D audio signal, etc., where the Class AB audio signal can be a sine wave signal, and the Class D audio signal can be a square wave signal.
由于第一开关SW1和第二开关SW2之间有两条通路，一条直连通路，用于测试AB类音频信号、H类音频信号和工作在AB类模式下K类音频信号；一条增加低通滤波器电路，用于将D类音频信号或工作在D类模式下K类音频信号还原为AB类音频信号。由此既可以满足AB类音频信号、H类音频信号测试，也可用于D类音频信号、K类音频信号测试，进一步拓宽了音频测试转接装置的应用场景。Since there are two paths between the first switch SW1 and the second switch SW2, a direct connection path is used to test class AB audio signals, class H audio signals and class K audio signals working in class AB mode; a low-pass filter circuit is added to restore class D audio signals or class K audio signals working in class D mode to class AB audio signals. In this way, it can not only meet the test of class AB audio signal and class H audio signal, but also can be used for the test of class D audio signal and class K audio signal, which further broadens the application scenarios of the audio test adapter device.
在本实用新型一些实施例中，第一低通滤波子电路511和第二低通滤波子电路512可以为RC滤波电路，也可以是其它类型的低通滤波电路，例如，CL、LC、CRC、RCR、LCL、DLC等低通滤波电路，第一低通滤波子电路511和第二低通滤波子电路512可以是相同的低通滤波电路，也可以是不同的低通滤波电路，具体此处不作限定。In some embodiments of the present invention, the first low-pass filter sub-circuit 511 and the second low-pass filter sub-circuit 512 can be RC filter circuits, or other types of low-pass filter circuits, such as CL, LC, CRC, RCR, LCL, DLC and other low-pass filter circuits.
如图4所示，在本实用新型一些具体实施例中，第一开关SW1可以包括第一开关通路、第二开关通路、第三开关通路和第四开关通路。As shown in FIG. 4 , in some specific embodiments of the present invention, the first switch SW1 may include a first switch path, a second switch path, a third switch path and a fourth switch path.
其中，第一开关SW1还可以包括第一输入引脚、第二输入引脚、第三输入引脚、第四输入引脚、第一输出引脚和第二输出引脚，第一输出引脚通过第一开关通路连接第一输入引脚，通过第三开关通路连接第三输入引脚，第二输出引脚通过第二开关通路连接第二输入引脚，通过第四开关通路连接第四输入引脚，第一输入引脚、第二输入引脚在第一通路通过低通滤波电路与第二开关SW2的电连接，第三输入引脚、第四输入引脚分别与第二开关SW2电连接，第一输出引脚、第二输出引脚分别与音频测试输出模块3电连接。Wherein, the first switch SW1 may also 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. The first output pin is connected to the first input pin through the first switch path, connected to the third input pin through the third switch path, the second output pin is connected to the second input pin through the second switch path, and connected to the fourth input pin through the fourth switch path. The first input pin and the second input pin are electrically connected to the second switch SW2 through the low-pass filter circuit in the first path. They are respectively electrically connected to the audio test output module 3 .
在本实用新型另一些实施例中，第二开关SW2可以包括第五开关通路、第六开关通路、第七开关通路、第八开关通路、第九开关通路、第十开关通路、第十一开关通路和第十二开关通路。In other embodiments of the present invention, 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.
其中，第二开关SW2还可以包括第三输出引脚、第四输出引脚、第五输出引脚、第六输出引脚、第五输入引脚、第六输入引脚、第七输入引脚、第八输入引脚、第九输入引脚、第十输入引脚、第十一输入引脚和第十二输入引脚。Wherein, 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.
具体的，第三输出引脚通过第五开关通路连接第五输入引脚，通过第七开关通路连接第七输入引脚，通过第九开关通路连接第九输入引脚，通过第十一开关通路连接第十一输入引脚，第四输出引脚通过第六开关通路连接第六输入引脚，通过第八开关通路连接第八输入引脚，通过第十开关通路连接第十输入引脚，通过第十二开关通路连接第十二输入引脚，第三输出引脚和第四输出引脚分别与低通滤波电路电连接，第五输出引脚和第六输出引脚分别与第一开关SW1电连接，第五输入引脚、第六输入引脚、第七输入引脚、第八输入引脚、第九输入引脚、第十输入引脚、第十一输入引脚和第十二输入引脚与音频测试输入模块4电连接。Specifically, the third output pin is connected to 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, and the eleventh input pin through the eleventh switch path. The input pins, 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 electrically connected to the audio test input module 4 .
如图4、图5所示，在本实用新型实施例中，音频测试输出模块3包括音频测试输出接口，音频测试输出接口可以包括6个输出引脚和6个输入引脚，音频测试输入模块可以包括6个音频测试输入接口。As shown in Fig. 4 and Fig. 5, in the utility model embodiment, audio frequency test output module 3 comprises audio frequency test output interface, and audio frequency test output interface can comprise 6 output pins and 6 input pins, and audio frequency test input module can comprise 6 audio frequency test input interfaces.
具体的，在本实用新型一些实施例中，至少两个音频测试输入接口包括第一音频测试输入接口、第二音频测试输入接口、第三音频测试输入接口和第四音频测试输入接口，第一音频测试输入接口、第二音频测试输入接口、第三音频测试输入接口和第四音频测试输入接口的接口类型均不相同；其中，第一音频测试输入接口、第二音频测试输入接口、第三音频测试输入接口和第四音频测试输入接口分别与第一开关子模块电连接。Specifically, in some embodiments of the present utility model, 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, and 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 all different; 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 respectively electrically connected to the first switch submodule.
本实用新型一些实施例中，第一音频测试输入接口、第二音频测试输入接口、第三音频测试输入接口和第四音频测试输入接口分别为未封装的预留测试点、扬声器接口，听筒接口，line out接口中一种，如图4、图5中所示预留的a、b测试点、B接口、C接口和D接口，通过更多的音频测试接口设置可以兼容更多不同类型的音频测试场景。In some embodiments of the present invention, 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 unpackaged reserved test points, speaker interfaces, earpiece interfaces, and one of the line out interfaces, such as the reserved a, b test points, B interface, C interface, and D interface shown in Figure 4 and Figure 5, and can be compatible with more different types of audio test scenarios through more audio test interface settings.
在本实用新型另一些实施例中，至少两个音频测试输入接口还可以包括第五音频测试输入接口和第六音频测试输入接口，如图5中所示E接口和预留的c、d、e、f测试点，更进一步拓展了音频测试的应用范围。In some other embodiments of the present utility model, at least two audio test input interfaces can also include the fifth audio test input interface and the sixth audio test input interface, as shown in Figure 5, the E interface and the reserved c, d, e, f test points further expand the scope of application of the audio test.
如图4、图5所示，在本实用新型另一些实施例中，第二开关子模块可以包括第三开关SW3，第三开关SW3分别与音频测试输出模块(图5中的A接口)和音频测试输入模块电连接。As shown in Fig. 4 and Fig. 5, in other embodiments of the present invention, the second switch submodule 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.
其中，第三开关SW3可以包括第十三开关通路、第十四开关通路、第十五开关通路、第十六开关通路、第十七开关通路、第十八开关通路、第十九开关通路和第二十开关通路。Wherein, 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.
第三开关SW3还可以包括第七输出引脚、第八输出引脚、第九输出引脚、第十输出引脚、第十三输入引脚、第十四输入引脚、第十五输入引脚、第十六输入引脚、第十七输入引脚、第十八输入引脚、第十九输入引脚和第二十输入引脚；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;
具体的，第七输出引脚通过第十三开关通路连接第十三输入引脚，通过第十五开关通路连接第十五输入引脚；第八输出引脚通过十四开关通路连接十四输入引脚，通过十六开关通路连接十六输入引脚；第九输出引脚通过第十七开关通路连接第十七输入引脚，通过第十九开关通路连接第十九输入引脚；第十输出引脚通过十八开关通路连接十八输入引脚，通过二十开关通路连接第二十输入引脚；第七输出引脚、第八输出引脚、第九输出引脚、第十输出引脚分别与音频测试输出模块电连接，第十三输入引脚、第十四输入引脚、第十五输入引脚、第十六输入引脚、第十七输入引脚、第十八输入引脚、第十九输入引脚和第二十输入引脚与音频测试输入模块电连接。Specifically, the seventh output pin is connected to the thirteenth input pin through the thirteenth switch path, and the fifteenth input pin through the fifteenth switch path; the eighth output pin is connected to the fourteenth input pin through the fourteenth switch path, and connected to the sixteenth input pin through the sixteenth switch path; the ninth output pin is connected to the seventeenth input pin through the seventeenth switch path, and connected to the nineteenth input pin through the nineteenth switch path; The input pins, 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 to the audio test input module.
在本实用新型一些实施例中，第三开关SW3的第七输出引脚与音频测试输出模块的第一个引脚电连接，第三开关SW3的第八输出引脚与音频测试输出模块的第二个引脚电连接，第三开关SW3的第九输出引脚与音频测试输出模块的第三个引脚电连接、第三开关SW3的第十输出引脚与音频测试输出模块的第四个引脚电连接，而第一开关SW1的第一输出引脚、第二输出引脚分别与音频测试输出模块的第五个引脚和第六个引脚电连接。In some embodiments of the present invention, 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 respectively electrically connected to the fifth pin and the sixth pin of the audio test output module.
在本实用新型另一些实施例中，第三开关SW3的第十三输入引脚、第十四输入引脚、第十五输入引脚、第十六输入引脚分别与第五音频测试输入接口(如图5中的E接口)电连接，第三开关SW3的第十七输入引脚、第十八输入引脚、第十九输入引脚和第二十输入引脚分别与音频测试输入模块的第六音频测试输入接口电连接(即分别连接图5中c、d、e、f预留测试点)，而第二开关SW2的第五输入引脚、第六输入引脚分别与音频测试输入模块的第一音频测试输入接口(如图5中的a、b预留测试点)电连接，第二开关SW2的第七输入引脚、第八输入引脚分别与音频测试输入模块的第二音频测试输入接口(如图5中的B接口)电连接，第二开关SW2的第九输入引脚、第十输入引脚分别与音频测试输入模块的第三音频测试输入接口(如图5中的C接口)电连接，第二开关SW2的第十一输入引脚和第十二输入引脚分别与音频测试输入模块的第四音频测试输入接口(如图5中的D接口)电连接。In other embodiments of the present invention, the thirteenth input pin, the fourteenth input pin, the fifteenth input pin, and the sixteenth input pin of the third switch SW3 are respectively electrically connected to the fifth audio test input interface (such as the E interface in FIG. The pins are respectively electrically connected to the first audio test input interface of the audio test input module (such as a and b reserved test points in Figure 5), the seventh input pin and the eighth input pin of the second switch SW2 are respectively electrically connected to the second audio test input interface of the audio test input module (as the B interface in Figure 5), the ninth input pin and the tenth input pin of the second switch SW2 are respectively electrically connected to the third audio test input interface of the audio test input module (such as the C interface in Figure 5), and the eleventh and twelfth input pins of the second switch SW2 are respectively connected to the fourth audio test of the audio test input module. The input interface (such as the D interface in Figure 5) is electrically connected.
下面结合一具体实施例对本实用新型中音频测试转接装置进行描述。The following describes the audio test adapter device of the present invention in conjunction with a specific embodiment.
如图4、图5所示，图5表示的是一个具体实施例中测试示意图，U1表示的是用于测试的示波器设备；用来采集音频信号给到示波器；U2是本实用新型中音频测试转接装置(如音频功率测试板)；B，C，D，E四个接口，具体代表扬声器接口，听筒接口，line out接口、耳机接口等音频接口，用于转接音频输入测试信号；A接口代表最终输出的音频信号。a，b代表差分音频测试点，c，d，e，f代表左右声道音频测试点，这些测试点主要用于测试只预留测试点或器件焊盘的设备。11，12，13，14，15，16分别指使用不同音频接口的待测试音频设备。As shown in Fig. 4 and Fig. 5, what Fig. 5 represented is a test schematic diagram in a specific embodiment, and what U1 represented was the oscilloscope equipment for testing; it was used to collect audio signals and gave to the oscilloscope; U2 was an audio frequency test transfer device (such as an audio power test board) in the present utility model; B, C, D, and E four interfaces specifically represented a speaker interface, a handset interface, a line out interface, an earphone interface and other audio interfaces, and were used to transfer audio input test signals; the A interface represents the audio signal of the final output. a, b represent differential audio test points, c, d, e, f represent left and right channel audio test points, these test points are mainly used to test devices that only reserve test points or device pads. 11, 12, 13, 14, 15, 16 respectively refer to the audio devices to be tested using different audio interfaces.
当前的已有的测试流程是在没有U2的情况下进行测试的，所以不同的测试设备需要不同的音频测试治具，大大的增加了测试的设备成本。使用U2后，可以同时支持将不同音频接口设备转换为同一接口，测试时只需要使用一种音频测试治具即可满足不同接口和情况下的测试需求。并且对于D类输出的音频信号无法直接使用示波器测量，需要外加低通滤波器电路后测试的情况，可以直接使用U2上已兼容设计的低通滤波器电路直接测试。The current existing test process is tested without U2, so different test equipment requires different audio test fixtures, which greatly increases the cost of test equipment. After using U2, it can support the conversion of different audio interface devices to the same interface at the same time. Only one audio test fixture is needed to meet the test requirements of different interfaces and situations during testing. In addition, if the audio signal output by class D cannot be directly measured by an oscilloscope, and it needs to be tested after adding a low-pass filter circuit, it can be directly tested by using the compatible designed low-pass filter circuit on U2.
具体工作流程是：假设现有设备需要进行音频测试，测试人员可根据测试设备输出的音频信号类型，音频接口形式进行灵活接口选择，不需要关心现有的音频测试治具支持什么接口。当测试设备通过功率测试板完成连接后，即可开始测试。通过手动选择测试板上的信号开关，最终将输入信号通过A口输出到音频测试治具。The specific workflow is: assuming that the existing equipment needs to be tested by audio, the tester can choose the interface flexibly according to the type of audio signal output by the test equipment and the form of the audio interface, and does not need to care about what interface the existing audio test fixture supports. After the test equipment is connected through the power test board, the test can be started. By manually selecting the signal switch on the test board, the input signal is finally output to the audio test fixture through the A port.
另外功率测试板还提供了AB类音频信号和D类音频信号分离测试的方法，如4、图5中第一开关SW1和第二开关SW2之间有两条通路，一条直连通路，用于测试AB类音频信号、H类音频信号和工作在AB类模式下K类音频信号；一条增加低通滤波器电路，用于将D类音频信号或工作在D类模式下K类音频信号还原为AB类音频信号。由此既可以满足AB类音频信号、H类音频信号测试，也可用于D类音频信号、K类音频信号测试。In addition, the power test board also provides a separate test method for class AB audio signals and class D audio signals, such as 4. There are two paths between the first switch SW1 and the second switch SW2 in Figure 5, one direct connection path is used to test class AB audio signals, class H audio signals and class K audio signals working in class AB mode; one is added with a low-pass filter circuit to restore class D audio signals or class K audio signals working in class D mode to class AB audio signals. Therefore, it can not only meet the test of class AB audio signal and class H audio signal, but also can be used for the test of class D audio signal and class K audio signal.
为便于更好的实施本实用新型实施例提供的音频测试转接装置，本实用新型实施例还提供一种基于上述音频测试转接装置改进的音频测试中间设备。其中名词的含义与上述音频测试转接装置中相同，具体实现细节可以参考上面实施例中的相关说明。In order to better implement the audio test adapter 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 above audio test adapter device. The meanings of the nouns are the same as those in the above-mentioned audio test adapter, and the specific implementation details can refer to the related descriptions in the above embodiments.
为便于更好的实施本实用新型实施例提供的音频测试转接装置，本实用新型实施例还提供一种基于上述音频测试转接装置改进的音频测试系统，音频测试系统包括音频测试转接装置和示波器，音频测试转接装置为如上面实施例中描述的音频测试转接装置，音频测试转接装置与示波器电连接。其中名词的含义与上述音频测试转接装置中相同，具体实现细节可以参考方法实施例中的说明。In order to facilitate the better implementation of the audio test adapter provided by the embodiment of the present utility model, the embodiment of the present utility model also provides an improved audio test system based on the above-mentioned audio test adapter. The audio test system includes an audio test adapter and an oscilloscope. The audio test adapter is the audio test adapter as described in the above embodiment, and the audio test adapter is electrically connected to the oscilloscope. The meanings of the nouns are the same as those in the audio test adapter described above, and for specific implementation details, please refer to the descriptions in the method embodiments.
以上对本实用新型实施例所提供的一种音频测试转接装置、音频测试中间设备及测试系统进行了详细介绍，本文中应用了具体个例对本实用新型的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本实用新型的方法及其核心思想；同时，对于本领域的技术人员，依据本实用新型的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本实用新型的限制。The above is a detailed introduction of an audio test adapter device, audio test intermediate equipment and test system provided by the embodiment of the present invention. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiment is only used to help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application range. In summary, the contents of this specification should not be understood as limitations on the present invention.
| Application Number | Priority Date | Filing Date | Title |
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| CN202320860580.6UCN219395047U (en) | 2023-04-17 | 2023-04-17 | Audio test adapter, audio test intermediate equipment and test system |
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| CN202320860580.6UCN219395047U (en) | 2023-04-17 | 2023-04-17 | Audio test adapter, audio test intermediate equipment and test system |
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