Test method applied to vehicle machine FM1388 chip

Abstract

The invention relates to the technical field of chip test methods, in particular to a test method applied to a vehicle FM1388 chip. The method comprises the following steps: firstly, installing the vehicle-mounted machine FM1388 chip in a to-be-tested vehicle, establishing a test environment in the vehicle, ensuring the test environment to be relatively stable, completing connection of test equipment, then completing configuration of the vehicle-mounted machine FM1388 chip so that the vehicle-mounted machine FM1388 chip meets test requirements, then testing the vehicle-mounted machine FM1388 chip, and recording test data. According to the method, the vehicle-mounted FM1388 chip can be tested, recorded data are uploaded to an audio analysis tool, finally, the audio analysis tool is used for analyzing and summarizing the data recorded in real time, and testing of the vehicle-mounted FM1388 chip is completed. By means of the method, wind noise, engine noise, tire noise and the like at different speeds can be simulated, so that the actual testing effect can simulate the real vehicle-mounted environment, and the testing efficiency is improved. And the test effect of the MIC noise reduction chip is better.

Description

Technical Field

[0001] The present invention relates to the technical field of chip testing methods, and in particular to a testing method for a vehicle computer FM1388 chip. Background Art

[0002] When driving at high speeds or in city congestion, engine noise, wind noise, tire noise, etc. will interfere with the driver and passengers' auditory experience and even affect driving safety, so the car audio system is usually equipped with a noise reduction function. However, traditional noise reduction technology often uses analog circuits, which has limited noise reduction effects and is easily affected by external factors such as ambient temperature and humidity.

[0003] In order to solve the above problems, the vehicle-mounted MIC noise reduction chip came into being. The vehicle-mounted MIC noise reduction chip is a noise reduction chip specially used in the vehicle environment, which adopts advanced digital signal processing algorithms to achieve efficient noise reduction effects.

[0004] Current MIC noise reduction chips need to be tested in different noise environments. However, the actual test environment is difficult to fully simulate the real vehicle environment, including wind noise, engine noise, and tire noise at different speeds, which may lead to differences between the test results and the actual use effects. Summary of the invention

[0005] The purpose of the present invention is to provide a testing method for the FM1388 chip applied to a vehicle computer, so as to solve the problem that the current MIC noise reduction chip needs to be tested in different noise environments. However, the actual test environment is difficult to fully simulate the real vehicle environment, resulting in a difference between the test results and the actual use effect.

[0006] To achieve the above object, the present invention provides a test method for a vehicle computer FM1388 chip, and the test method for a vehicle computer FM1388 chip comprises the following steps:

[0007] S1: Install the FM1388 chip in the vehicle to be tested, build a test environment in the vehicle, ensure that the test environment is relatively stable, and complete the connection of the test equipment;

[0008] S2: Complete the configuration of the FM1388 chip of the vehicle computer so that the FM1388 chip of the vehicle computer meets the test requirements;

[0009] S3: Test the FM1388 chip of the vehicle computer, record the test data, and upload the recorded data to the audio analysis tool;

[0010] S4: Use audio analysis tools to analyze and summarize the real-time recorded data to complete the test of the car computer FM1388 chip.

[0011] Among them, in step S1, the specific content of building a test environment in the car is: connecting the car FM1388 chip with the car host, the test microphone and the PC, connecting the PC with the test sound card, and connecting the test sound card with multiple NE speakers and multiple Noise speakers.

[0012] Among them, in step S2, the configuration of the vehicle computer FM1388 chip specifically includes: providing a stable power supply for the vehicle computer FM1388 chip to ensure its normal operation;

[0013] Ensure the correct installation and configuration of the driver used to drive the FM1388 chip of the vehicle computer;

[0014] Use the audio management software of the vehicle head unit to set the test microphone as the default audio input device and ensure that the noise reduction function is enabled;

[0015] Configure the parameters of the FM1388 chip of the vehicle computer through the software interface.

[0016] Among them, in step S3, the specific steps of testing the vehicle computer FM1388 chip are:

[0017] Click the recording test on the PC and import it into the database;

[0018] Select the EQ file of the test microphone and set the sensitivity of the test microphone;

[0019] Select the channel according to the test sound card, and select the corresponding NE speaker's EQ file. The corresponding Noise speaker will automatically fill in the EQ file after equalization.

[0020] Connect to the vehicle host and perform self-test;

[0021] After calibration, the recording is performed and the recorded data is uploaded to the audio analysis tool on the PC in real time.

[0022] Among them, in step S3, the test content of the vehicle computer FM1388 chip includes a single sound source test, a background noise test and a directionality test.

[0023] The specific contents of the single sound source test are: conducting a single sound source test to evaluate the performance of the FM1388 chip in the vehicle without background noise;

[0024] The specific content of the background noise test is: testing in a simulated background noise environment to evaluate the noise reduction effect of the vehicle FM1388 chip in actual application;

[0025] The specific content of the directional test is: testing with a mobile test microphone to evaluate the noise reduction effect of the vehicle computer FM1388 chip in different directions.

[0026] Among them, in step S4, the real-time data recorded in the test includes audio waveform, spectrum diagram and noise level, and the content of analyzing the real-time data using the audio analysis tool includes evaluating whether the noise reduction effect, sensitivity and directionality of the vehicle computer FM1388 chip meet the requirements.

[0027] The present invention discloses a test method for a vehicle FM1388 chip. First, the vehicle FM1388 chip is installed in a vehicle to be tested, and a test environment is built in the vehicle to ensure that the test environment is relatively stable. The connection of the test equipment is completed. Then, the configuration of the vehicle FM1388 chip is completed so that the vehicle FM1388 chip meets the test requirements. Then, the vehicle FM1388 chip is tested, and the test data is recorded. The recorded data is uploaded to an audio analysis tool. Finally, the audio analysis tool is used to analyze and summarize the real-time recorded data to complete the test of the vehicle FM1388 chip. The above method can be used to simulate wind noise, engine noise, tire noise, etc. at different speeds, so that the actual test effect can simulate the real vehicle environment, so that the test effect of the MIC noise reduction chip is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a flow chart of the steps of the test method for the vehicle computer FM1388 chip provided by the present invention.

[0030] Figure 2 It is a schematic diagram of the in-vehicle test environment provided by the present invention. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] See also Figure 1 and Figure 2 The present invention provides a test method for a vehicle computer FM1388 chip, and the test method for a vehicle computer FM1388 chip comprises the following steps:

[0033] S1: Install the FM1388 chip in the vehicle to be tested, build a test environment in the vehicle, ensure that the test environment is relatively stable, and complete the connection of the test equipment;

[0034] S2: Complete the configuration of the FM1388 chip of the vehicle computer so that the FM1388 chip of the vehicle computer meets the test requirements;

[0035] S3: Test the FM1388 chip of the vehicle computer, record the test data, and upload the recorded data to the audio analysis tool;

[0036] S4: Use audio analysis tools to analyze and summarize the real-time recorded data to complete the test of the car computer FM1388 chip.

[0037] In this implementation, the vehicle FM1388 chip is first installed in the vehicle to be tested, and a test environment is built in the vehicle to ensure that the test environment is relatively stable and the connection of the test equipment is completed. Then, the configuration of the vehicle FM1388 chip is completed so that the vehicle FM1388 chip meets the test requirements. Then, the vehicle FM1388 chip is tested, and the test data is recorded, and the recorded data is uploaded to the audio analysis tool. Finally, the audio analysis tool is used to analyze and summarize the real-time recorded data to complete the test of the vehicle FM1388 chip. The above method can be used to simulate wind noise, engine noise, tire noise, etc. at different speeds, so that the actual test effect can simulate the real vehicle environment, so that the test effect of the MIC noise reduction chip is better.

[0038] Among them, in step S1, the specific content of building a test environment in the car is: connecting the car FM1388 chip with the car host, the test microphone and the PC, connecting the PC with the test sound card, and connecting the test sound card with multiple NE speakers and multiple Noise speakers.

[0039] In this embodiment, the test environment is set up in the test vehicle by connecting the vehicle FM1388 chip to the vehicle host, the test microphone and the PC, connecting the PC to the test sound card, and connecting the test sound card to multiple NE speakers and multiple Noise speakers.

[0040] Furthermore, in step S2, the configuration of the vehicle computer FM1388 chip specifically includes: providing a stable power supply for the vehicle computer FM1388 chip to ensure its normal operation;

[0041] Ensure the correct installation and configuration of the driver used to drive the FM1388 chip of the vehicle computer;

[0042] Use the audio management software of the vehicle head unit to set the test microphone as the default audio input device and ensure that the noise reduction function is enabled;

[0043] Configure the parameters of the FM1388 chip of the vehicle computer through the software interface.

[0044] In this embodiment, to provide a stable power supply for the FM1388 chip of the vehicle machine and ensure its normal operation, it is necessary to select a suitable power supply voltage and current according to the technical specification of the chip;

[0045] When configuring the parameters of the car computer FM1388 chip through the software interface, the parameters include noise reduction intensity, noise reduction mode (such as mono, stereo, etc.), noise threshold, etc.

[0046] Furthermore, in step S3, the specific steps of testing the vehicle computer FM1388 chip are as follows:

[0047] Click the recording test on the PC and import it into the database;

[0048] Select the EQ file of the test microphone and set the sensitivity of the test microphone;

[0049] Select the channel according to the test sound card, and select the corresponding NE speaker's EQ file. The corresponding Noise speaker will automatically fill in the EQ file after equalization.

[0050] Connect to the vehicle host and perform self-test;

[0051] After calibration, the recording is performed and the recorded data is uploaded to the audio analysis tool on the PC in real time.

[0052] In this embodiment, when testing the FM1388 chip of the vehicle computer, first click the recording test on the PC, import the database, select the EQ file of the test microphone, set the sensitivity of the test microphone, select the channel according to the test sound card, and select the corresponding NE speaker EQ file. The corresponding Noise speaker automatically fills the EQ file after equalization, then connects to the vehicle host, performs self-test, and finally records after calibration, and uploads the recorded data to the audio analysis tool on the PC in real time.

[0053] Furthermore, in step S3, the test contents of the vehicle computer FM1388 chip include a single sound source test, a background noise test and a directionality test.

[0054] The specific contents of the single sound source test are: conducting a single sound source test to evaluate the performance of the FM1388 chip in the vehicle without background noise;

[0055] The specific content of the background noise test is: testing in a simulated background noise environment to evaluate the noise reduction effect of the vehicle FM1388 chip in actual application;

[0056] The specific content of the directional test is: testing with a mobile test microphone to evaluate the noise reduction effect of the vehicle computer FM1388 chip in different directions.

[0057] Furthermore, in step S4, the real-time data recorded in the test includes audio waveform, spectrum diagram and noise level, and the content of analyzing the real-time data using the audio analysis tool includes evaluating whether the noise reduction effect, sensitivity and directionality of the vehicle computer FM1388 chip meet the requirements.

[0058] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A test method for the FM1388 chip used in a vehicle, characterized in that: The steps include: S1: Install the FM1388 chip in the vehicle to be tested, build a test environment in the vehicle, ensure that the test environment is relatively stable, and complete the connection of the test equipment; S2: Complete the configuration of the FM1388 chip of the vehicle computer so that the FM1388 chip of the vehicle computer meets the test requirements; S3: Test the FM1388 chip of the vehicle computer, record the test data, and upload the recorded data to the audio analysis tool; S4: Use audio analysis tools to analyze and summarize the real-time recorded data to complete the test of the car computer FM1388 chip.

2. The test method for the FM1388 chip applied to the vehicle computer as claimed in claim 1 is characterized in that: In step S1, the specific contents of setting up the test environment in the car are: connecting the car FM1388 chip with the car host, the test microphone and the PC, connecting the PC with the test sound card, and connecting the test sound card with multiple NE speakers and multiple Noise speakers.

3. The test method for the FM1388 chip applied to the vehicle computer as claimed in claim 2 is characterized in that: In step S2, the configuration of the vehicle computer FM1388 chip specifically includes: providing a stable power supply for the vehicle computer FM1388 chip to ensure its normal operation; Ensure the correct installation and configuration of the driver used to drive the FM1388 chip of the vehicle computer; Use the audio management software of the vehicle head unit to set the test microphone as the default audio input device and ensure that the noise reduction function is enabled; Configure the parameters of the FM1388 chip of the vehicle computer through the software interface.

4. The test method for the FM1388 chip applied to the vehicle computer as claimed in claim 3 is characterized in that: In step S3, the specific steps of testing the vehicle computer FM1388 chip are as follows: Click the recording test on the PC and import it into the database; Select the EQ file of the test microphone and set the sensitivity of the test microphone; Select the channel according to the test sound card, and select the corresponding NE speaker's EQ file. The corresponding Noise speaker will automatically fill in the EQ file after equalization. Connect to the vehicle host and perform self-test; After calibration, the recording is performed and the recorded data is uploaded to the audio analysis tool on the PC in real time.

5. The test method for the FM1388 chip applied to the vehicle computer as claimed in claim 4 is characterized in that: In step S3, the test contents of the vehicle computer FM1388 chip include single sound source test, background noise test and directionality test.

6. The test method for the FM1388 chip applied to the vehicle computer as claimed in claim 5, characterized in that: The specific contents of the single sound source test are: conducting a single sound source test to evaluate the performance of the vehicle machine FM1388 chip without background noise; The specific content of the background noise test is: testing in a simulated background noise environment to evaluate the noise reduction effect of the vehicle FM1388 chip in actual application; The specific content of the directional test is: testing with a mobile test microphone to evaluate the noise reduction effect of the vehicle computer FM1388 chip in different directions.

7. The test method for the FM1388 chip applied to the vehicle computer as claimed in claim 6, characterized in that: In step S4, the real-time data recorded in the test includes audio waveform, spectrum diagram and noise level. The content of analyzing the real-time data using the audio analysis tool includes evaluating whether the noise reduction effect, sensitivity and directionality of the vehicle computer FM1388 chip meet the requirements.

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