CN114531639A - Testing system and method of multi-channel audio module - Google Patents
Testing system and method of multi-channel audio module Download PDFInfo
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Abstract
The application discloses test system and method of multichannel audio frequency module, this system includes: host computer and a plurality of test module, every test module all includes: the upper communication interface is used for connecting with an upper computer, receiving a test instruction of the upper computer and sending a test result to the upper computer; the test signal sending ends are used for being connected with the multiple signal receiving ends of the audio module to be tested respectively and sending test signals to the audio module to be tested; the test signal receiving ends are used for being connected with the signal sending ends of the audio module to be tested respectively and receiving the feedback signals sent by the audio module to be tested; and the processing unit is used for outputting a test signal according to the test instruction and generating a test result according to the feedback signal. The test system of this application has extensive range of application, and this test system can all be used to the audio frequency module that awaits measuring of all kinds of configurations, and a plurality of test module can test a plurality of audio frequency modules that await measuring simultaneously in this application, have higher efficiency of software testing.
Description
Technical Field
The invention relates to the field of audio module testing, in particular to a system and a method for testing a multi-channel audio module.
Background
Currently, audio modules with microphone channels and speaker output functions are often embedded in smart homes to provide voice functionality. The audio module comprises a main control chip and related devices, and a series of tests are also needed to meet the design of products as if the chips are delivered from factories. Where audio testing involves testing of the electrical signals of the microphone channel and the loudspeaker output channel.
In the current module audio test, the conventional open-loop test requires that the audio module has certain file storage capacity, and the existing loop test can only test two microphone channels and cannot test multiple microphone channels, so that the existing module audio test can be applied to the test of a few test objects and cannot be compatible with the test of various audio modules with different configurations.
Therefore, how to provide a solution to the above technical problems is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a system and a method for testing a multi-channel audio module compatible with multiple audio modules. The specific scheme is as follows:
a system for testing a multi-channel audio module, comprising: host computer and a plurality of test module, wherein:
each of the test modules includes:
the upper communication interface is used for connecting with an upper computer, receiving a test instruction of the upper computer and sending a test result to the upper computer;
the test signal sending ends are used for being connected with a plurality of signal receiving ends of the audio module to be tested respectively and sending test signals to the audio module to be tested;
the test signal receiving ends are used for being respectively connected with the signal sending ends of the audio module to be tested and receiving the feedback signals sent by the audio module to be tested;
and the processing unit is used for outputting the test signal according to the test instruction and generating the test result according to the feedback signal.
Preferably, the test system further comprises an expansion module, wherein:
the uplink interface of the extension module is connected with the upper computer, and the plurality of downlink interfaces of the extension module are respectively connected with the plurality of test modules.
Preferably, the uplink interface is specifically an interface for converting a USB protocol and a UART protocol;
the downlink interface is specifically an I2C interface.
Preferably, a plurality of the test signal sending ends of each test module are divided into N groups, N is a positive integer, the processing unit sequentially performs N groups of tests according to the test instruction, wherein the ith group of tests includes: outputting the test signal to the ith group of test signal sending terminals, receiving the feedback signal of the test signal receiving terminals, and generating the test result of the ith group according to the test signal and the corresponding feedback signal; i is 1,2, … N.
Preferably, the upper computer is connected with the audio module to be tested, compares whether the test state corresponds to the test instruction when receiving the test state of the audio module to be tested, and judges that the wiring is wrong if not.
Preferably, the upper computer sends a wiring test instruction to the corresponding test module through a serial port address;
each of the test modules further comprises:
an IO output end used for being connected with an IO receiving end of the audio module to be tested and sending a test level to the IO receiving end when receiving the wiring test instruction of the upper computer;
and the upper computer judges whether the test level corresponds to the wiring test instruction or not when receiving the test level of the audio module to be tested, if so, the upper computer judges that the wiring is correct, sends the test instruction to the corresponding test module, and if not, the upper computer judges that the wiring is wrong.
Preferably, the IO output end stops sending the test level to the IO receiving end after the processing unit generates the test result.
Correspondingly, the application also discloses a testing method of the multichannel audio module, which is applied to the upper computer of the testing system of the multichannel audio module, and the testing method comprises the following steps:
sending a test instruction to any test module so that the test module sends a test signal to a corresponding audio module to be tested, receives a feedback signal sent by the audio module to be tested, and generates a test result according to the test signal and the feedback signal;
and receiving the test result sent by the test module.
Correspondingly, the application also discloses a testing method of the multi-channel audio module, which is applied to any testing module of the testing system of the multi-channel audio module, and the testing method comprises the following steps:
when a test instruction of the upper computer is received, sending a test signal to the corresponding audio module to be tested;
receiving a feedback signal sent by the audio module to be tested;
generating a test result according to the test signal and the feedback signal;
and uploading the test result to the upper computer.
The application discloses test system of multichannel audio frequency module includes: host computer and a plurality of test module, wherein: each of the test modules includes: the upper communication interface is used for connecting with an upper computer, receiving a test instruction of the upper computer and sending a test result to the upper computer; the test signal sending ends are used for being connected with a plurality of signal receiving ends of the audio module to be tested respectively and sending test signals to the audio module to be tested; the test signal receiving ends are used for being respectively connected with the signal sending ends of the audio module to be tested and receiving the feedback signals sent by the audio module to be tested; and the processing unit is used for outputting the test signal according to the test instruction and generating the test result according to the feedback signal. The test system of this application, there is not audio frequency module that awaits measuring must be dual input channel or must have the restriction of holding power, and the audio frequency module that awaits measuring of all kinds of configurations all can use this test system to test, has extensive range of application, and a plurality of test module can test a plurality of audio frequency modules that await measuring simultaneously in this application, have higher efficiency of software testing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a block diagram of a testing system for a multi-channel audio module according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the operation of a system for testing a multi-channel audio module according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating steps of a method for testing a multi-channel audio module according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a testing method of a multi-channel audio module according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the current module audio test, the conventional open-loop test requires that the audio module has certain file storage capacity, and the existing loop test can only test two microphone channels and cannot test multiple microphone channels, so that the existing module audio test can be applied to the test of a few test objects and cannot be compatible with the test of various audio modules with different configurations.
The test system of this application, there is not audio frequency module that awaits measuring must be dual input channel or must have the restriction of holding power, and the audio frequency module that awaits measuring of all kinds of configurations all can use this test system to test, has extensive range of application, and a plurality of test module can test a plurality of audio frequency modules that await measuring simultaneously in this application, have higher efficiency of software testing.
The embodiment of the invention discloses a test system of a multi-channel audio module, which is shown in figure 1 and comprises the following components: host computer 1 and a plurality of test module 2, wherein:
each test module 2 comprises:
the upper communication interface is used for being connected with the upper computer 1, receiving a test instruction of the upper computer 1 and sending a test result to the upper computer 1;
the test signal sending ends are used for being connected with the signal receiving ends of the audio module to be tested respectively and sending test signals to the audio module to be tested;
the test signal receiving ends are used for being respectively connected with the signal sending ends of the audio module to be tested and receiving the feedback signals sent by the audio module to be tested;
and the processing unit is used for outputting a test signal according to the test instruction and generating a test result according to the feedback signal.
It can be understood that, in every test module 2, the host communication interface carries out the information interaction with host computer 1, send test instruction to test module 2 including host computer 1, test module 2 sends the test result to host computer 1, host computer 1 generally distinguishes test module 2 with the form of serial port address or serial port number when the different test module 2 of location, the host communication interface direct connection of considering all test module 2 will occupy the more interface of host computer 1 to host computer 1, consequently, can set up extension module 3, realize all test module 2 and host computer 1's interconnect, wherein: an uplink interface of the expansion module 3 is connected with the upper computer 1, and a plurality of downlink interfaces of the expansion module 3 are respectively connected with a plurality of test modules 2. Further, the uplink interface may be specifically selected as an interface for converting a USB protocol and a UART protocol; the downstream interface may be specifically selected as an I2C interface.
Further, the signal receiving terminal of the audio frequency module that awaits measuring is the signal of telecommunication pin of microphone passageway, and the signal sending terminal of the audio frequency module that awaits measuring is the signal of telecommunication pin of loudspeaker passageway, and when arbitrary test module 2 was used for testing the audio frequency module that awaits measuring, at first accomplished test module 2 and awaits measuring the wiring between the audio frequency module, then executed following operation by the processing unit: after receiving the test instruction, the test signal receiving terminal sends a test signal, the test signal receiving terminal receives a feedback signal, a test result is generated according to the feedback signal, and the test result is uploaded to the upper computer 1. The process of generating the test result according to the feedback signal specifically comprises analyzing the audio files of the test signal and the feedback signal, determining the frequency response and/or the harmonic distortion degree and/or the noise of the test signal and the feedback signal, and using the audio files as the test result, the upper computer 1 analyzes whether the test result meets the preset standard or not to obtain a final test conclusion.
However, if the signal receiving end number of audio frequency module that awaits measuring exceeds signal sending end, also microphone passageway quantity exceeds loudspeaker passageway quantity, the test of all passageways can't be accomplished in a test, must test multiunit signal receiving end for a lot, the number of signal sending end that tests at every turn can not be less than the number that gets into the signal receiving end of test, loudspeaker passageway quantity is 2 under the usual condition, consequently the number of signal sending end keeps invariable for 2 when testing at every turn, signal receiving end also microphone passageway quantity is not more than 2, also promptly: a plurality of test signal sending terminals of each test module 2 are divided into N groups, N is a positive integer, and the processing unit carries out N groups of tests in sequence according to the test instruction, wherein the ith group of tests comprises: outputting a test signal to the ith group of test signal sending terminals, receiving a feedback signal of the test signal receiving terminal, and generating a test result of the ith group according to the test signal and the corresponding feedback signal; i is 1,2, … N.
It can be understood that the processing unit can complete all the wiring of the test module 2 and the audio module to be tested before the test according to the wiring related to the N groups of test processes performed by the sequential test instructions, and the processing unit controls whether the test signal of each test signal sending end is sent or not during the test, and can also adjust the wiring state before each group of test, and the former is generally selected to improve the test efficiency.
It can be understood that the number of the microphone passageway of the audio frequency module that awaits measuring in this embodiment exceeds the loudspeaker passageway, consequently divide into N group with the microphone passageway, make every group microphone passageway can with all loudspeaker passageways one-to-one, thereby every microphone passageway has a loudspeaker passageway that corresponds when every group tests, also the number that every group microphone passageway also is not more than the number of loudspeaker passageway, and is further, the number of every group test signal sending terminal is not less than the number of test signal receiving terminal when testing.
As shown in fig. 1, the signal receiving terminals of the audio module to be tested, i.e., the microphone channels, are MIC-1/2 and MIC-3/4 … MIC-M-1/M, each group of test modules 2 has only two test signal sending terminals SPK +/-and the microphone channel tested at that time is marked as MIC +/-and there is communication, and similarly, the signal sending terminal SPK-L/R of the audio module to be tested maintains a state of always communicating with the test signal receiving terminal MIC1/2 of the test module 2. Furthermore, the number of the N sets of tests and the number of the test signal sending ends related to the N sets of tests can be determined according to the number of the microphone channels and the number of the speaker channels of the audio module to be tested, which are actually connected, and the number is not particularly limited herein.
Furthermore, each group of tests have test results uploaded to the upper computer 1, if any group of test results do not meet the preset standard, the audio module to be tested can be considered to be unqualified, the test module 2 can be made to stop testing to save the test time, and the test results of all signal sending ends and signal receiving ends of the audio module to be tested can be obtained by continuing the test, so that the test is accurate and comprehensive.
It can be understood that after the upper computer 1 issues the test instruction, each test module 2 operates independently, and any two test modules 2 do not interfere and affect each other.
Furthermore, considering that the test of the plurality of test modules 2 and the audio module to be tested should ensure that the corresponding connection relation is correct, the upper computer 1 can obtain an electric signal of the audio module to be tested to verify whether the test instruction corresponds or not, so that a foolproof effect is realized, namely, the upper computer 1 is connected with the audio module to be tested, the upper computer 1 compares the test state when receiving the test state of the audio module to be tested whether the test instruction corresponds or not, and if not, the connection error is judged. This prevent slow-witted effect can be accomplished in actual test, and the test state of audio frequency module that awaits measuring that host computer 1 received promptly is that test module 2 carries out the interactive in-process of test signal and feedback signal with the audio frequency module that awaits measuring, also can accomplish before actual test, checks in advance promptly whether have the wiring mistake, avoids finding in the test process that repeated wiring and test consuming time behind the wiring mistake, further improves the efficiency of follow-up test.
Furthermore, because the upper computer 1 sends a wiring test instruction to the corresponding test module 2 through the serial port address, the serial port address can be used for performing fool-proofing in advance; specifically, each test module 2 further includes: an IO output end used for being connected with an IO receiving end of the audio module to be tested and sending a test level to the IO receiving end when receiving a wiring test instruction of the upper computer 1; the upper computer 1 judges whether the test level corresponds to a wiring test instruction or not when receiving the test level of the audio module to be tested, if so, the upper computer judges that the wiring is correct, sends the test instruction to the corresponding test module 2, and if not, the upper computer judges that the wiring is wrong.
It can be understood that the upper computer 1 receives the test level of the audio module to be tested, and judges whether the test level corresponds to the wiring test instruction, if so, the upper computer 1, the corresponding test module 2 and the connected audio module to be tested form a correct and complete closed loop, and the next actual test can be performed.
Further, the IO output end stops sending the test level to the IO receiving end after the processing unit generates the test result. It will be appreciated that ceasing to send the test levels means ending the test, and for each set of tests mentioned above means ending the current set of tests. Host computer 1 to the acquisition of many times test level, can confirm the corresponding relation of audio frequency module and all signals that await measuring at present more accurately, avoid wiring or signal opportunity conflict to lead to the audio frequency module that awaits measuring of difference the condition emergence that the signal was confused when testing simultaneously, it is concrete, if test module 2's IO output has stopped sending the test level to the IO receiving terminal, and host computer 1 has still received the test level from the IO receiving terminal directly, the location of test wiring or corresponding relation the mistake has appeared this moment obviously, suspicious mistake appears in the test result, need further judge or prevent slow-witted and test again.
Specifically, referring to fig. 2, the whole test flow of the test system can be as follows:
firstly, completing the wiring of an upper computer 1, a test module 2 and an audio module to be tested, wherein the number of the test modules 2 is determined according to the number of the audio modules to be tested;
the upper computer 1 initializes the test module 2, the test module 2 completes initialization, and pulls low IO, namely outputs a test level;
the upper computer 1 initializes the audio module to be tested to enter an audio test mode, the audio module to be tested reads IO, if the IO is low, pass is returned to the upper computer 1, namely the upper computer 1 receives a signal corresponding to a test level, the fact that the wiring is correct is proved to pass the fool-proof test, and otherwise fail is returned;
the upper computer 1 sends a test instruction to the test module 2; the test module 2 sends a test signal to the audio module to be tested, receives a feedback signal at the same time, generates a test result, returns the test result to the upper computer 1, and raises IO (input/output) at the same time;
the upper computer 1 reads the IO level of the audio module to be tested, if the IO level is high, the fool-proof verification is passed, and if not, the IO level is not passed.
It can be understood that the test system in this embodiment is composed of an upper computer 1 and a plurality of test modules 2, wherein the action of the upper computer 1 is realized through an internal software tool thereof, the whole test system provides a collaborative closed-loop test environment with the audio module to be tested, and allows a plurality of audio modules to be tested simultaneously, and the test efficiency is obviously improved.
The application discloses test system of multichannel audio frequency module includes: host computer and a plurality of test module, wherein: each of the test modules includes: the upper communication interface is used for connecting with an upper computer, receiving a test instruction of the upper computer and sending a test result to the upper computer; the test signal sending ends are used for being connected with a plurality of signal receiving ends of the audio module to be tested respectively and sending test signals to the audio module to be tested; the test signal receiving ends are used for being respectively connected with the signal sending ends of the audio module to be tested and receiving the feedback signals sent by the audio module to be tested; and the processing unit is used for outputting the test signal according to the test instruction and generating the test result according to the feedback signal. The test system of this application, there is not audio frequency module that awaits measuring must be dual input channel or must have the restriction of holding power, and the audio frequency module that awaits measuring of all kinds of configurations all can use this test system to test, has extensive range of application, and a plurality of test module can test a plurality of audio frequency modules that await measuring simultaneously in this application, have higher efficiency of software testing.
Correspondingly, the present application also discloses a testing method of a multi-channel audio module, which is applied to an upper computer of the testing system of the multi-channel audio module described in any one of the above paragraphs, and as shown in fig. 3, the testing method includes:
s11: sending a test instruction to any test module so that the test module sends a test signal to a corresponding audio module to be tested, receives a feedback signal sent by the audio module to be tested and generates a test result according to the test signal and the feedback signal;
s12: and receiving the test result sent by the test module.
Correspondingly, the present application also discloses a testing method of a multi-channel audio module, which is applied to any testing module of the testing system of the multi-channel audio module described in any one of the above, and as shown in fig. 4, the testing method includes:
s21: when a test instruction of the upper computer is received, sending a test signal to the corresponding audio module to be tested;
s22: receiving a feedback signal sent by the audio module to be tested;
s23: generating a test result according to the test signal and the feedback signal;
s24: and uploading the test result to the upper computer.
The above two testing methods for the multi-channel audio module are described in detail with reference to the related contents of the testing system for the multi-channel audio module, and are not described herein again.
The above two testing methods for the multi-channel audio module have the same technical effects as the testing system for the multi-channel audio module in the above embodiments, and are not described herein again.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above detailed description of the system and method for testing a multi-channel audio module according to the present invention is provided, and the specific examples are used herein to explain the principle and the implementation of the present invention, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. A system for testing a multi-channel audio module, comprising: host computer and a plurality of test module, wherein:
each of the test modules includes:
the upper communication interface is used for connecting with an upper computer, receiving a test instruction of the upper computer and sending a test result to the upper computer;
the test signal sending ends are used for being connected with a plurality of signal receiving ends of the audio module to be tested respectively and sending test signals to the audio module to be tested;
the test signal receiving ends are used for being respectively connected with the signal sending ends of the audio module to be tested and receiving the feedback signals sent by the audio module to be tested;
and the processing unit is used for outputting the test signal according to the test instruction and generating the test result according to the feedback signal.
2. The test system of claim 1, further comprising an expansion module, wherein:
the uplink interface of the extension module is connected with the upper computer, and the plurality of downlink interfaces of the extension module are respectively connected with the plurality of test modules.
3. The test system of claim 2,
the uplink interface is specifically an interface for converting a USB protocol and a UART protocol;
the downlink interface is specifically an I2C interface.
4. The test system according to claim 1, wherein the plurality of test signal transmitting ends of each of the test modules are divided into N groups, N is a positive integer, the processing unit sequentially performs N groups of tests according to the test instruction, wherein the ith group of tests includes: outputting the test signal to the ith group of test signal sending terminals, receiving the feedback signal of the test signal receiving terminals, and generating the test result of the ith group according to the test signal and the corresponding feedback signal; i is 1,2, … N.
5. The test system according to any one of claims 1 to 4, wherein the upper computer is connected to the audio module to be tested, and when receiving the test state of the audio module to be tested, the upper computer compares whether the test state corresponds to the test instruction, and if not, determines that the wiring is wrong.
6. The test system of claim 5,
the upper computer sends a wiring test instruction to the corresponding test module through a serial port address;
each of the test modules further comprises:
an IO output end used for being connected with an IO receiving end of the audio module to be tested and sending a test level to the IO receiving end when receiving the wiring test instruction of the upper computer;
and the upper computer judges whether the test level corresponds to the wiring test instruction or not when receiving the test level of the audio module to be tested, if so, the upper computer judges that the wiring is correct, sends the test instruction to the corresponding test module, and if not, the upper computer judges that the wiring is wrong.
7. The test system of claim 6,
and the IO output end stops sending the test level to the IO receiving end after the processing unit generates the test result.
8. A method for testing a multi-channel audio module, which is applied to an upper computer of a testing system of the multi-channel audio module according to any one of claims 1 to 7, the method comprising:
sending a test instruction to any test module so that the test module sends a test signal to a corresponding audio module to be tested, receives a feedback signal sent by the audio module to be tested, and generates a test result according to the test signal and the feedback signal;
and receiving the test result sent by the test module.
9. A method for testing a multi-channel audio module, which is applied to any one of the test modules of the test system of the multi-channel audio module set according to any one of claims 1 to 7, the method comprising:
when a test instruction of the upper computer is received, sending a test signal to the corresponding audio module to be tested;
receiving a feedback signal sent by the audio module to be tested;
generating a test result according to the test signal and the feedback signal;
and uploading the test result to the upper computer.
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