CN110958556A - System and method for testing microphone performance - Google Patents
System and method for testing microphone performance Download PDFInfo
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- CN110958556A CN110958556A CN201911206358.9A CN201911206358A CN110958556A CN 110958556 A CN110958556 A CN 110958556A CN 201911206358 A CN201911206358 A CN 201911206358A CN 110958556 A CN110958556 A CN 110958556A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention provides a system and a method for testing microphone performance, wherein the testing system calls an acquisition card to test the starting and restarting performance of a microphone to be tested, and comprises the following steps: the excitation signal setting module is used for configuring an excitation signal for testing the starting and restarting performance of the microphone according to the testing requirement of the microphone to be tested; the test module is used for calling the acquisition card to test the power-on state and the power-off and power-on states of the microphone to be tested according to the excitation signal and acquiring a corresponding test result; and the data processing module is used for judging the test result, and exporting and storing the judged test result. The invention can automatically complete the test of the starting and restarting performance of the microphone, and effectively improves the test efficiency.
Description
Technical Field
The invention relates to the technical field of microphone testing, in particular to a testing system and a testing method for realizing microphone starting and restarting performances.
Background
At present, various performances of the microphone, such as Noise, FFT, PSR, etc., can be tested by a testing instrument. The starting performance of the microphone is the key performance of microphone product verification, but at present, the automatic test of the starting performance of the microphone cannot be accurately and efficiently realized, namely, whether the microphone performance is influenced by instantaneous impact of starting and power-off restarting when the microphone is in a power-on state and a power-off state cannot be judged.
Based on the problems existing in the existing microphone testing method, a testing system and a method capable of testing the starting and restarting performance of the microphone are urgently needed.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a system and a method for testing microphone performance, so as to solve the problem that the start-up and restart performance of a microphone cannot be tested at present.
In order to achieve the above object, the present invention provides a microphone performance testing system, which calls an acquisition card to test the start and restart performance of a microphone to be tested, and comprises:
the excitation signal setting module is used for configuring an excitation signal for testing the starting and restarting performance of the microphone according to the testing requirement of the microphone to be tested;
the test module is used for calling the acquisition card to test the power-on state and the power-off and power-on states of the microphone to be tested according to the excitation signal and acquiring a corresponding test result;
and the data processing module is used for judging the test result, and exporting and storing the judged test result.
Further, preferably, the test module includes: an excitation signal execution unit, a response signal collection unit, a response signal analysis unit and a test result display unit, wherein,
the excitation signal execution unit is used for sending an excitation signal and triggering the microphone to be tested to enter a power-on state and a power-off and power-on state; the excitation signals comprise an electrical excitation signal for triggering the microphone to be tested to enter a power-on state and a power-off and power-on state, and an acoustic excitation signal for exciting the microphone to be tested to generate a response signal;
the response signal collecting unit is used for collecting response signals generated by the microphone to be tested in a power-on state and a power-off and power-on state through a collecting card;
the response signal analysis unit is used for analyzing the response signal data collected by the acquisition card to obtain a test result;
and the test result display unit is used for displaying the test result.
Further, it is preferable that the excitation signal execution unit includes:
the acoustic excitation signal subunit is used for sending out an acoustic excitation signal by controlling the sound card;
and the electrical excitation signal subunit is used for triggering the microphone to be tested to enter a power-on state and a power-off and power-on state according to the electrical excitation signal.
Further, preferably, the acquisition card controls the acoustic excitation signal subunit and the electrical excitation signal subunit.
The invention also provides a testing method of microphone performance, which adopts the testing system of microphone performance to test, and the specific testing method is as follows:
s110, configuring an excitation signal for testing the starting and restarting performance of the microphone in an excitation signal setting module according to the testing requirement of the microphone to be tested;
s120, calling an acquisition card to test the power-on state and the power-off and power-on states of the microphone to be tested according to the excitation signal, and acquiring a corresponding test result;
and S130, judging the test result, and exporting and storing the judged test result.
Further, preferably, in the process of calling the acquisition card to test the power-on state and the power-off and power-on states of the microphone to be tested, the method includes:
s210, an excitation signal setting module generates an excitation signal, an excitation signal execution unit sends out an acoustic excitation signal for exciting a microphone to be tested to generate a response signal, and the microphone to be tested is triggered to enter a power-on state and a power-off and power-on state;
s220, calling an acquisition card to collect response signals generated by the microphone to be tested in the power-on state and the power-off and power-on states;
s230, analyzing the response signal data collected by the acquisition card to obtain a test result;
and S240, displaying the test result.
Further, preferably, in the process that the excitation signal execution unit triggers the power-on state and the power-off and power-on states of the microphone to be tested, the acoustic excitation signal subunit controls the sound card to send out an acoustic excitation signal, and the electrical excitation signal subunit triggers the microphone to be tested to enter the power-on state and the power-off and power-on states; the acoustic excitation signal subunit and the electrical excitation signal subunit are controlled by an acquisition card.
According to the technical scheme, the system and the method for testing the performance of the microphone provided by the invention have the advantages that the testing of the power-on state and the power-off and power-on states of the microphone to be tested is automatically completed through the acquisition card, so that the error of manual operation is reduced, and the testing accuracy is improved; therefore, the starting state and the restarting state of the microphone to be tested can be switched at any time, the testing steps are simplified, the whole testing operation can be continuously carried out, and the testing efficiency is further improved.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic logical structure diagram of a system for testing microphone performance according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a logic structure of a test module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a method for testing microphone performance according to an embodiment of the invention;
fig. 4 is a flowchart illustrating a method for testing microphone performance according to an embodiment of the present invention.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
Aiming at the problem that the performance test of the starting and restarting performance of the microphone cannot be automatically completed in the current laboratory, the invention provides a test system and a test method for automatically completing the starting and restarting performance of the microphone.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The method for testing the performance of the microphone can be applied to microphones of mobile terminals such as mobile phones, PADs or notebook computers. The embodiment of the invention can automatically complete the performance test of the microphone at the moment of powering on, powering off and powering on again. The invention generates an excitation signal according to the test requirement, and then completes the test of the power-on state and the power-off and power-on states of the microphone through the excitation signal; the method comprises the following steps that an acquisition card is adopted to control an electrical excitation signal and an acoustic excitation signal, and the conversion of the starting and restarting states of a microphone to be tested is completed through the electrical excitation signal; and through the acoustic excitation signal, the microphone to be tested generates response signal data, and then the test result is obtained by analyzing the response data. Therefore, the testing system of the invention can automatically complete the testing of the starting and restarting performance of the microphone.
In order to illustrate the microphone performance test system provided by the present invention, fig. 1 shows a logical structure of the microphone performance test system according to the embodiment of the present invention.
As shown in fig. 1, in the system for testing the performance of a microphone provided by the present invention, the test system invokes an acquisition card to test the start-up and restart performance of the microphone to be tested, and the test system 100 includes an excitation signal setting module 110, a test module 120, and a data processing module 130.
Specifically, the excitation signal setting module 110 is configured to configure an excitation signal for testing the starting and restarting performance of the microphone according to the testing requirement of the microphone to be tested; in the excitation signal setting module 110, an excitation signal is configured according to a test requirement definition of the microphone to be tested, it should be noted that the test requirement is an electrifying requirement, and the electrifying requirement refers to an electrifying test duration in a specific implementation process.
The excitation signals comprise an electrical excitation signal for triggering the microphone to be tested to enter a power-on state and a power-off and power-on state, and an acoustic excitation signal for exciting the microphone to be tested to generate a response signal.
The test module 120 is configured to invoke the acquisition card to test the power-on state and the power-off-power-on state of the microphone to be tested according to the excitation signal, and acquire a corresponding test result.
To further illustrate the specific structure of the test module 120, FIG. 2 shows the logical structure of the test module according to an embodiment of the present invention.
As shown in fig. 2, the test module 120 includes a stimulus signal execution unit 121, a response signal collection unit 122, a response signal analysis unit 123, and a test result display unit 124. The excitation signal execution unit 121 and the response signal collection unit 122 both realize the functions thereof through an acquisition card; specifically, the acquisition card is mainly divided into a sound card part and an acquisition card part, wherein the sound card part is mainly used for realizing the action of sending out the excitation signal of the excitation signal execution unit 121; the acquisition card is mainly used to collect the response signals from the response signal collecting unit 122.
Specifically, the excitation signal execution unit 121 is configured to send an excitation signal and trigger the microphone to be tested to enter a power-on state and a power-off and power-on state; in a specific embodiment, the excitation signal performing unit 121 includes: an acoustic excitation signal subunit and an electrical excitation signal subunit. The acoustic excitation signal subunit is used for sending an acoustic excitation signal by controlling the sound card; it should be noted that the acoustic excitation signal is emitted through the sound card and the simulated mouth. And the electrical excitation signal subunit is used for triggering the microphone to be tested to enter a power-on state and a power-off and power-on state according to the electrical excitation signal. Here also the electrical excitation signal is emitted via the sound card.
Specifically, the microphone to be tested is triggered to start and restart by an electrical excitation signal.
Further, in another specific embodiment, the acoustic excitation signal subunit and the electrical excitation signal subunit are controlled by an acquisition card. The microphone to be tested is started or automatically restarted within a set time by setting the power-on time interval and the power-off time interval of the electrical excitation signal, so that the performance of the starting or restarting state of the microphone to be tested is detected. The existing starting performance test system generally adopts relays to realize the starting of equipment to be tested, the relays are all in millisecond level, the switching of the relays can cause circuit jitter instantly, and if the relays are adopted, the test result can generate great errors. Different from the existing starting test system, the invention sets the electrical excitation signal containing the power-on and power-off restarting information, the electrical excitation signal is sent out by the excitation signal execution unit 121, and the automatic starting or restarting of the microphone to be tested is realized; the system for testing the performance of the microphone provided by the invention has the advantages that the power state switching delay of the microphone to be tested is only ns level, and the circuit jitter is not caused, so that the accuracy of the performance test is ensured.
In the specific implementation process, the time length of the whole section of excitation signal is editable, but the power-on time length is as long as possible in principle, and 25 seconds is defaulted in the specific implementation process so as to ensure that the state of the product is stable when a reference point of the sensitivity parameter is taken; in addition, during the test process of power-off restart, the time interval of power-off is defaulted to 10 ms.
It should be noted that the device under test described above may be a microphone under test. And the setting parameters are used as reference parameters for the excitation signal setting module 110 to set the excitation signal.
And the response signal collecting unit 122 is used for collecting response signals generated by the microphone to be tested in the power-up state and the power-down and power-up states through the acquisition card.
The response signal analysis unit 123 is configured to analyze the response signal data collected by the acquisition card to obtain a test result; wherein, the data acquisition is completed by an acquisition card of an acquisition card; specifically, a collecting card part of the collecting card is used for collecting a response signal generated after a microphone to be detected receives an acoustic excitation signal sent by a sound card.
And a test result display unit 124 for displaying the test result.
It should be noted that, the response signal analysis unit 123 needs to refer to two thresholds for analyzing the data; wherein the first threshold refers to the interval time, for example, in a specific embodiment the first threshold is selected to be 1 ms; and the second threshold is sensitivity, that is, the sensitivity is analyzed at intervals of 1ms in the response signal analyzing unit 123, and then the difference between the analyzed sensitivity and the reference sensitivity is made to obtain a test curve of the start-up performance. The reference sensitivity is the sensitivity of a stable time point after the power-on is set.
The starting performance of the microphone is obvious only within dozens of milliseconds after the product is powered on. The power-on trigger mechanism of the software system can be accurate to microsecond, and the authenticity of the starting performance of the product at the power-on moment of the product is ensured to the maximum extent. Without the test software system, the starting performance of the product at the power-on moment is difficult to obtain.
In the present embodiment, the reference sensitivity is the sensitivity of the same product after being powered on for about 20s, which is used as a reference value, and it should be noted that, in the existing performance test process, the reference sensitivity needs to be obtained through a reference microphone, and the reference microphone does not need to be used here, because the stability of the microphone sensitivity obtained after the product is powered on for 20s has reached the reference requirement.
Therefore, the test curve of the starting performance is a condition curve between the sensitivity and the time within the specified time period reflecting the first threshold value.
In the testing process, the microphone to be tested can be powered on or powered off again for multiple times by only placing the product once, so that the damage to the product caused by taking and placing the product for multiple times is avoided, the error rate of manually switching the test items is reduced, and the testing efficiency is improved.
In a word, the excitation signal execution unit 121 is used to control the switching of the power-on state and the power-off and power-on state of the microphone to be tested; the response signal collecting unit 122 is used for collecting response signals generated by the microphone to be tested in the power-on state and the power-off and power-on state through the acquisition card, and the response signal analyzing unit 123 is used for analyzing response signal data collected by the acquisition card to obtain a test result; the test result is then displayed using the test result display unit 124.
In a specific embodiment, the response signal can be stored in the test system, and other audio software can be used for analyzing the stored response signal; the saved response signal can be used to see if the test system is stable or, when a fault occurs, to analyze the source of the fault using the response signal.
In the embodiment of the present invention, the data processing module 130 determines the test result, and exports and stores the determined test result.
Specifically, the test result is compared with a set threshold value, and if the test result is within the range of the set threshold value, the test is judged to be qualified; after all the microphone products to be tested are tested, the output button is clicked, and after the test file names are filled in the popped dialog boxes, the test result module 130 outputs and stores the finally tested data into the corresponding test files. In another embodiment, if the test result is outside the set threshold range, the test is determined to be failed; if the test of the microphone to be tested is not qualified, a 'restart' button can be clicked to carry out a new performance test on the microphone to be tested. The microphone to be detected can be repeatedly detected only by one key, and the phenomenon of error detection is avoided by multiple detections.
Fig. 3 illustrates the principle of a test method of microphone performance according to an embodiment of the present invention.
As shown in fig. 3, the test engineer automatically configures the test equipment by selecting the excitation signal of the desired configuration among the configuration options and clicking the "set" button according to the performance of the microphone to be tested. For example: if the system needs to test the performance value of the microphone after being powered on or powered off and then powered on, a tester selects the testing condition of powering on or powering off and then powering on in the configuration options, and after clicking a setting button, the testing system automatically configures the testing equipment.
Then, when the "start" button is clicked, the excitation signal executing unit 121, the response signal collecting unit 122, the response signal analyzing unit 123, and the test result displaying unit 124 of the test module 120 automatically test the start or restart performance test condition of the microphone to be tested, and then obtain the test result.
Specifically, after the test system is started, the sound card sends out an acoustic excitation signal and an electrical excitation signal, the test module 120 controls the microphone to be tested to be powered on or powered off and then powered on, the microphone to be tested generates a response signal after receiving the acoustic excitation signal, the response signal is collected by the collection card and then sent to the response signal analysis unit 123 for analysis, and finally, the test result display unit 124 displays the test result.
Finally, comparing the test result with a set threshold value, and if the test result is within the range of the set threshold value, judging that the test is qualified; and exporting and storing the judged test result. If the test result is out of the set threshold range, determining that the test is unqualified; if the test of the microphone to be tested is not qualified, a 'restart' button can be clicked to carry out a new performance test on the microphone to be tested.
In a word, after the excitation signal is generated in a self-defined mode, the excitation signal is sent out by using the sound card, then the power-on state or the power-off state and the power-on state of the microphone to be tested are triggered, the response signal is collected through the acquisition card, and finally the starting performance of the product is analyzed through the data analysis module of the software. The whole testing process is high in automation degree, and the detection accuracy and the detection efficiency are improved.
Corresponding to the above test system, the present invention further provides a method for testing microphone performance, and fig. 4 shows a flow of the method for testing microphone performance according to the embodiment of the present invention.
As shown in fig. 4, the method for testing the performance of a microphone provided by the present invention uses the above-mentioned system for testing the performance of a microphone to perform a test, and the specific test method includes steps S110 to S130, and the specific test method includes the following steps:
s110, configuring an excitation signal for testing the starting and restarting performance of the microphone in the excitation signal setting module 110 according to the testing requirement of the microphone to be tested;
s120, calling an acquisition card to test the power-on state and the power-off and power-on states of the microphone to be tested according to the excitation signal, and acquiring a corresponding test result;
and S130, judging the test result, and exporting and storing the judged test result.
In one embodiment, the method for testing the power-on state and the power-off and power-on states of the microphone to be tested by calling the acquisition card includes:
s210, an excitation signal setting module generates an excitation signal, an excitation signal execution unit sends out an acoustic excitation signal for exciting a microphone to be tested to generate a response signal, and the microphone to be tested is triggered to enter a power-on state and a power-off and power-on state;
s220, calling an acquisition card to collect response signals generated by the microphone to be tested in the power-on state and the power-off and power-on states;
s230, analyzing the response signal data collected by the acquisition card to obtain a test result;
and S240, displaying the test result.
Specifically, in the process that the excitation signal execution unit triggers the power-on state and the power-off and power-on states of the microphone to be tested, the acoustic excitation signal subunit controls the sound card to send out an acoustic excitation signal, and the electrical excitation signal subunit triggers the microphone to be tested to enter the power-on state and the power-off and power-on states; the acoustic excitation signal subunit and the electrical excitation signal subunit are controlled by an acquisition card.
According to the system and the method for testing the performance of the microphone, provided by the invention, the testing condition of the performance of the microphone is automatically configured through the testing condition configuration module 110, so that the testing of the power-on state and the power-off and power-on state of the microphone to be tested can be automatically completed through the testing module 120, the error of manual operation is reduced, and the testing accuracy is improved; in addition, the starting and restarting states of the microphone to be tested can be switched at any time, the testing steps are simplified, and the whole testing operation can be continuously carried out, so that the testing efficiency is further improved.
The system and method for testing the performance of a microphone proposed according to the present invention is described above by way of example with reference to the accompanying drawings. However, it will be understood by those skilled in the art that various modifications may be made to the system and method for testing microphone performance provided by the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (7)
1. The utility model provides a test system of microphone performance, its characterized in that, test system calls the collection card to test the start-up and restart performance of the microphone that awaits measuring, test system includes:
the excitation signal setting module is used for configuring an excitation signal for testing the starting and restarting performance of the microphone according to the testing requirement of the microphone to be tested;
the test module is used for calling the acquisition card to test the power-on state and the power-off and power-on states of the microphone to be tested according to the excitation signal and acquiring a corresponding test result;
and the data processing module is used for judging the test result, and exporting and storing the judged test result.
2. The microphone performance testing system of claim 1,
the test module includes: an excitation signal execution unit, a response signal collection unit, a response signal analysis unit and a test result display unit, wherein,
the excitation signal execution unit is used for sending the excitation signal and triggering the microphone to be tested to enter a power-on state and a power-off and power-on state; the excitation signals comprise an electrical excitation signal for triggering the microphone to be tested to enter a power-on state and a power-off and power-on state, and an acoustic excitation signal for exciting the microphone to be tested to generate a response signal;
the response signal collecting unit is used for collecting response signals generated by the microphone to be tested in a power-on state and a power-off and power-on state through a collecting card;
the response signal analysis unit is used for analyzing the response signal data collected by the acquisition card to obtain a test result;
and the test result display unit is used for displaying the test result.
3. The microphone performance testing system of claim 2, wherein the excitation signal execution unit comprises:
the acoustic excitation signal subunit is used for sending out an acoustic excitation signal by controlling the sound card;
and the electrical excitation signal subunit is used for triggering the microphone to be tested to enter an electrifying state and an electrifying-after-electrifying state according to the electrical excitation signal.
4. A microphone performance testing system as claimed in claim 3 wherein the acquisition card controls the acoustic excitation signal subunit and the electrical excitation signal subunit.
5. A method for testing the performance of a microphone by using the system for testing the performance of the microphone as claimed in any one of claims 1 to 4 comprises the following steps:
s110, configuring an excitation signal for testing the starting and restarting performance of the microphone in an excitation signal setting module according to the testing requirement of the microphone to be tested;
s120, calling an acquisition card to test the power-on state and the power-off and power-on states of the microphone to be tested according to the excitation signal, and acquiring a corresponding test result;
and S130, judging the test result, and exporting and storing the judged test result.
6. The method for testing the performance of the microphone according to claim 5, wherein the step of calling the acquisition card to test the power-on state and the power-off and power-on states of the microphone to be tested comprises the following steps:
s210, an excitation signal setting module generates an excitation signal, an excitation signal execution unit sends out an acoustic excitation signal for exciting the microphone to be tested to generate a response signal, and the microphone to be tested is triggered to enter a power-on state and a power-off and power-on state;
s220, calling an acquisition card to collect response signals generated by the microphone to be tested in the power-on state and the power-off and power-on states;
s230, analyzing the response signal data collected by the acquisition card to obtain a test result;
and S240, displaying the test result.
7. The method for testing the performance of the microphone according to claim 6, wherein in the process that the excitation signal execution unit triggers the power-up state and the power-down and power-up states of the microphone to be tested, the acoustic excitation signal subunit controls the sound card to send out an acoustic excitation signal, and the electrical excitation signal subunit triggers the microphone to be tested to enter the power-up state and the power-down and power-up states; the acoustic excitation signal subunit and the electrical excitation signal subunit are controlled by an acquisition card.
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