Audio link test method and system, and vehicle

Abstract

The invention discloses an audio link test method and system, and a vehicle. The method comprises the steps that a first electric signal generated by a power amplifier in the process of driving a loudspeaker to play target audio is collected, the target audio is audio corresponding to a first digital signal, and the first digital signal is an audio signal transmitted to the power amplifier by an intelligent terminal through an audio link; converting the first electric signal into a second digital signal; the second digital signal is sent to a power amplifier through an audio link, and the power amplifier is used for sending the second digital signal to the intelligent terminal, so that the intelligent terminal compares the second digital signal with the first digital signal; and determining that the audio link test is successful under the condition that the difference value between the second digital signal and the first digital signal is within a preset error range. According to the audio link test method provided by the embodiment of the invention, the test accuracy can be improved.

Description

Technical Field

[0001] This application belongs to the field of testing technology, and particularly relates to a testing method, system and vehicle for an audio link. Background Art

[0002] An audio link (such as an Automotive Audio Bus, A2B) is used to connect multiple audio devices for signal transmission. The reliability of the audio link can affect the signal transmission effect, and further affect the audio playback effect. Therefore, it is crucial to perform reliability testing on the audio link.

[0003] Currently, the way to test an audio link (such as an A2B bus) is usually that a Microcontroller Unit (MCU) first sends an audio signal to an external A2B power amplifier node, then the power amplifier node drives a speaker to play the audio corresponding to the audio signal, and then an A2B microphone node collects the audio signal corresponding to the audio, and feeds the audio signal back to the MCU through the A2B bus, so that the MCU can compare the input and output audio signals to determine whether the audio link is normal.

[0004] However, since the A2B microphone node usually synchronously collects the noise signal in the test environment when collecting the audio signal corresponding to the audio, the audio signal received by the MCU includes not only the audio signal output from the MCU, but also the noise signal in the test environment. That is to say, the above testing method is easily interfered by the test environment, resulting in low testing accuracy. Summary of the Invention

[0005] Embodiments of this application provide a testing method, system, analog audio receiving device, intelligent terminal, electronic device, storage medium and vehicle for an audio link, which can improve the testing accuracy.

[0006] In a first aspect, embodiments of this application provide a testing method for an audio link, the method includes:

[0007] Collect a first electrical signal generated during the process that a power amplifier drives a speaker to play a target audio, where the target audio is the audio corresponding to a first digital signal, and the first digital signal is an audio signal transmitted by an intelligent terminal to the power amplifier through the audio link;

[0008] Convert the first electrical signal into a second digital signal;

[0009] Send the second digital signal to the power amplifier via the audio link, where the power amplifier is used to send the second digital signal to the smart terminal, so that the smart terminal compares the second digital signal with the first digital signal, and determines that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range.

[0010] In a possible implementation, before converting the first electrical signal into the second digital signal, the method further includes:

[0011] Convert the high level in the first electrical signal into a low level to obtain a second electrical signal;

[0012] The converting the first electrical signal into the second digital signal includes:

[0013] Convert the second electrical signal into the second digital signal.

[0014] In a second aspect, an embodiment of the present application provides a method for testing an audio link, the method includes:

[0015] Send a first digital signal to a power amplifier via an audio link, where the power amplifier is used to drive a speaker to play a target audio corresponding to the first digital signal;

[0016] Receive a second digital signal sent by the power amplifier via the audio link, where the second digital signal is a digital signal obtained by an analog audio receiving device performing analog-to-digital conversion on a first electrical signal and sent to the power amplifier via the audio link, and the first electrical signal is an electrical signal generated by playing the target audio;

[0017] Compare the second digital signal with the first digital signal to determine a difference value between the second digital signal and the first digital signal;

[0018] Determine that the audio link test is successful when the difference value is within a preset error range.

[0019] In a possible implementation, the first digital signal includes a first frequency, and the comparing the second digital signal with the first digital signal to determine a difference value between the second digital signal and the first digital signal includes:

[0020] Perform fast Fourier transform processing on the second digital signal to obtain a second frequency and an amplitude;

[0021] When the amplitude is greater than a preset noise value, compare the second frequency with the first frequency to determine the difference value between the second frequency and the first frequency.

[0022] In a third aspect, an embodiment of the present application provides an analog audio receiving device, including:

[0023] An acquisition module, configured to acquire a first electrical signal generated by a power amplifier during driving a speaker to play a target audio, where the target audio is an audio corresponding to a first digital signal, and the first digital signal is an audio signal transmitted by a smart terminal to the power amplifier through an audio link;

[0024] A first conversion module, configured to convert the first electrical signal into a second digital signal;

[0025] A first sending module, configured to send the second digital signal to the power amplifier through the audio link, and the power amplifier is configured to send the second digital signal to the smart terminal, so that the smart terminal compares the second digital signal with the first digital signal, and determines that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range.

[0026] In a fourth aspect, an embodiment of the present application provides a smart terminal, including:

[0027] A second sending module, configured to send a first digital signal to a power amplifier through an audio link, and the power amplifier is configured to drive a speaker to play a target audio corresponding to the first digital signal;

[0028] A receiving module, configured to receive, through the audio link, a second digital signal sent by the power amplifier, where the second digital signal is a digital signal obtained by an analog audio receiving device through analog-to-digital conversion of a first electrical signal and sent to the power amplifier through the audio link, and the first electrical signal is an electrical signal generated by playing the target audio;

[0029] A comparison module, configured to compare the second digital signal with the first digital signal to determine the difference value between the second digital signal and the first digital signal;

[0030] A determination module, configured to determine that the audio link test is successful when the difference value is within a preset error range.

[0031] In a fifth aspect, an embodiment of the present application provides a test system for an audio link, and the system includes a smart terminal, a power amplifier, a speaker, and an analog audio receiving device;

[0032] The intelligent terminal is connected to the power amplifier through an audio link, and is configured to send a first digital signal corresponding to a target audio to the power amplifier through the audio link, and compare the received second digital signal with the first digital signal, and determine that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range;

[0033] The power amplifier is connected to the speaker and to the analog audio receiving device through the audio link, and is configured to drive the speaker to play the target audio corresponding to the first digital signal, and send the second digital signal to the intelligent terminal through the audio link when receiving the second digital signal sent by the analog audio receiving device through the audio link;

[0034] The analog audio receiving device is connected in parallel with the speaker, and is configured to collect a first electrical signal generated during the process of the power amplifier driving the speaker to play the target audio, convert the high level in the first electrical signal into a low level to obtain a second electrical signal, and convert the second electrical signal into the second digital signal, and send the second digital signal to the power amplifier through the audio link.

[0035] In a possible implementation manner, the analog audio receiving device includes a transformer, an analog-to-digital converter, and an audio link slave node;

[0036] The transformer is connected to the analog-to-digital converter, and is configured to collect the first electrical signal, convert the high level in the first electrical signal into a low level, and obtain and send the second electrical signal to the analog-to-digital converter;

[0037] The analog-to-digital converter is connected to the audio link slave node, and is configured to convert the second electrical signal into the second digital signal, and send the second digital signal to the audio link slave node;

[0038] The audio link slave node is configured to send the second digital signal to the power amplifier through the audio link.

[0039] In a possible implementation manner, the intelligent terminal includes a control module and an audio link master node;

[0040] The control module is connected to the audio link master node, and is configured to send the first digital signal to the audio link master node, and compare the received second digital signal with the first digital signal, and determine that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range;

[0041] The main node of the audio link is connected to the power amplifier through the audio link, and is configured to send the first digital signal to the power amplifier through the audio link, receive the second digital signal sent by the power amplifier through the audio link, and send the second digital signal to the control module.

[0042] In a sixth aspect, an embodiment of the present application provides an electronic device, which includes: a processor and a memory storing computer program instructions;

[0043] When the processor executes the computer program instructions, the method in any possible implementation method of the first aspect or the second aspect above is implemented.

[0044] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, on which computer program instructions are stored, and when the computer program instructions are executed by a processor, the method in any possible implementation method of the first aspect or the second aspect above is implemented.

[0045] In an eighth aspect, an embodiment of the present application provides a vehicle, which includes at least one of the following:

[0046] An analog audio receiving device as in any embodiment of the third aspect;

[0047] An intelligent terminal as in any embodiment of the fourth aspect;

[0048] A test system for an audio link as in any embodiment of the fifth aspect;

[0049] An electronic device as in any embodiment of the sixth aspect;

[0050] A computer-readable storage medium as in any embodiment of the seventh aspect.

[0051] The test method, system, analog audio receiving device, intelligent terminal, electronic device, storage medium and vehicle of the audio link according to the embodiments of the present application collect the first electrical signal generated during the process of the power amplifier driving the speaker to play the target audio, rather than the audio signal, so that the signal collection process can be free from the interference of the test environment. Furthermore, it can be ensured that the first electrical signal does not include the noise signal in the test environment, ensuring the accuracy of the first electrical signal. Based on this, by converting the first electrical signal into a second digital signal and transmitting the second digital signal to the intelligent terminal through the audio link, it can be ensured that the second digital signal received by the intelligent terminal does not include the noise signal in the test environment, and further ensure the accuracy of the second digital signal. In this way, by comparing the second digital signal with the first digital signal by the intelligent terminal and determining that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within the preset error range, the accuracy of the audio link test can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0053] Figure 1 is a schematic structural diagram of a test system for an audio link provided by an embodiment of the present application;

[0054] Figure 2 is a schematic flow chart of a test method for an audio link applied to an analog audio receiving device provided by an embodiment of the present application;

[0055] Figure 3 is a schematic flow chart of a test method for an audio link applied to an intelligent terminal provided by an embodiment of the present application;

[0056] Figure 4 is a schematic flow chart of a test method for an audio link provided by an embodiment of the present application;

[0057] Figure 5 is a schematic structural diagram of an analog audio receiving device provided by an embodiment of the present application;

[0058] Figure 6 is a schematic structural diagram of an intelligent terminal provided by an embodiment of the present application;

[0059] Figure 7 is a schematic structural diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0060] In order to more clearly understand the above-mentioned objects, features, and advantages of the present application, the solution of the present application will be further described below. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0061] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present application, rather than all the embodiments.

[0062] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the existence of additional identical elements in the process, method, article, or device comprising the said element.

[0063] As described in the background art section, currently, when the A2B microphone node collects the audio signal corresponding to the audio, it usually synchronously collects the noise signal in the test environment, so that the audio signal received by the MCU includes not only the audio signal output from the MCU but also the noise signal in the test environment. That is to say, the above test method is easily interfered by the test environment, which in turn leads to a low test accuracy.

[0064] In addition, since the A2B microphone node is used to collect the audio signal corresponding to the audio, in order to ensure the accuracy of the audio signal collected by the A2B microphone node, it is usually required that the playback volume of the audio is greater than the preset volume. In actual situations, there are usually users (such as inspection personnel) to assist in the test. Therefore, the playback volume greater than the preset volume may damage the user's hearing and harm the user's health.

[0065] In addition, in a test site, there are usually multiple test prototypes (i.e., intelligent terminals), and the phenomenon of co-frequency interference usually occurs between different test prototypes. Co-frequency interference will cause the playback volume of the audio to be zero, which in turn affects the collection of the audio signal and results in a high error rate of the test results, affecting the test accuracy. And if only the communication link corresponding to one test prototype is tested in a test site in order to avoid the phenomenon of co-frequency interference, the test efficiency will be severely reduced.

[0066] Thus, to solve the problems in the prior art, the embodiments of the present application provide a method and system for testing an audio link, an analog audio receiving device, a smart terminal, an electronic device, a storage medium, and a vehicle. Among them, the method for testing the audio link can be applied to the scenario of automatically testing the A2B audio link of an in-vehicle smart terminal. The method for testing the audio link can be executed by the testing system of the audio link.

[0067] The following introduces the testing system of the audio link provided by the embodiments of the present application. Among them, the testing system may include a smart terminal, an audio link, and a plurality of auxiliary testing devices. Among them, the plurality of auxiliary testing devices may include a power amplifier, a speaker, and an analog audio receiving device. The smart terminal and the power amplifier can be connected through the audio link.

[0068] Figure 1 FIG. shows a schematic structural diagram of a testing system for an audio link provided by an embodiment of the present application. As Figure 1 shown, the testing system 100 for an audio link provided by an embodiment of the present application may include a smart terminal 11, a power amplifier 12, a speaker 13, and an analog audio receiving device 14.

[0069] The smart terminal 11 can be connected to the power amplifier 12 through the audio link, and is configured to send a first digital signal corresponding to the target audio to the power amplifier 12 through the audio link. Among them, the smart terminal 11 can be any one of an in-vehicle smart terminal, a mobile smart terminal, and a smart wearable device. When the smart terminal is an in-vehicle smart terminal, the audio link can be, for example, an Automotive Audio Bus (A2B). In addition, the first digital signal can be an audio signal generated by the smart terminal corresponding to the target audio.

[0070] Specifically, the smart terminal 11 may include a control module 111 and an audio link main node 112. The control module 111 can be connected to the audio link main node 112, and is configured to send a first digital signal to the audio link main node 112. The audio link main node 112 can be connected to the power amplifier 12 through the audio link, and is configured to send a first digital signal to the power amplifier 12 through the audio link. If the audio link is an A2B bus, the audio link main node 112 can be denoted as an A2B master. In addition, the power amplifier 12 can be used as an audio link slave node (such as A2B slave1) to communicate with the audio link main node 112.

[0071] The power amplifier 12 can be connected to the speaker 13 to drive the speaker 13 to play the target audio corresponding to the first digital signal. Among them, the speaker 13 can be a loudspeaker (SPK), which is used to convert an electrical signal into a sound signal.

[0072] As an example, after receiving the first digital signal, the power amplifier 12 can drive the speaker 13 to play the target audio. The process of the power amplifier 12 driving the speaker 13 to play the target audio may include: first converting the first digital signal into a first electrical signal through the power amplifier 12, and then converting the first electrical signal into a sound signal through the speaker 13.

[0073] The analog audio receiving device 14 can be connected in parallel with the speaker 13, and is used to collect the first electrical signal generated during the process of the power amplifier 12 driving the speaker 13 to play the target audio, convert the high level in the first electrical signal into a low level to obtain a second electrical signal, and convert the second electrical signal into a second digital signal, and send the second digital signal to the power amplifier 12 through the audio link.

[0074] Specifically, the analog audio receiving device 14 may include a transformer 141, an analog-to-digital converter 142, and an audio link slave node 143. Among them, the transformer 141 can be used to collect the first electrical signal generated by playing the target audio. The analog-to-digital converter 142 can be connected to the transformer 141 and is used to convert an electrical signal into a digital signal.

[0075] As an example, after collecting the first electrical signal, the transformer 141 can send the first electrical signal to the analog-to-digital converter 142. The analog-to-digital converter 142 can convert the first electrical signal into a second digital signal.

[0076] In actual situations, the first electrical signal is usually a high-level signal. Therefore, in order to ensure that the analog-to-digital converter 142 can smoothly perform the conversion between the electrical signal and the digital signal, as another example, after collecting the first electrical signal, the transformer 141 can first convert the high level in the first electrical signal into a low level to obtain a second electrical signal, and then send the second electrical signal to the analog-to-digital converter 142. The analog-to-digital converter 142 can convert the second electrical signal into a second digital signal.

[0077] In addition, the analog-to-digital converter 142 can be connected to the audio link slave node 143 for sending a second digital signal to the audio link slave node 143. Wherein, if the audio link is an A2B bus, the audio link slave node 143 can be denoted as A2B slave2. The audio link slave node 143 (such as A2B slave2) and the power amplifier 12 (such as A2B slave1) can communicate through the audio link. Specifically, the audio link slave node 143 can be used to send a second digital signal to the power amplifier 12 through the audio link.

[0078] In addition, the power amplifier 12 can also be connected to the analog audio receiving device 14 for receiving the second digital signal sent by the analog audio receiving device 14 through the audio link and, upon receiving the second digital signal, sending the second digital signal to the smart terminal 11 through the audio link. Specifically, the power amplifier 12 can receive the second digital signal sent by the audio link slave node 143 through the audio link and send the second digital signal to the audio link master node 112 through the audio link. The audio link master node 112 can also be used to send the second digital signal to the control module 111 through the audio link. The control module 111 can also be used to compare the received second digital signal with the first digital signal and determine that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range. That is, the smart terminal 11 can also be used to compare the received second digital signal with the first digital signal and determine that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range. Correspondingly, if the difference value between the second digital signal and the first digital signal is outside the preset error range, it can be determined that the audio link test fails.

[0079] As an example, the first digital signal can include a first frequency, and the second digital signal can include a second frequency and an amplitude. After receiving the second digital signal, the control module 111 can perform a fast Fourier transform process on the second digital signal to obtain the second frequency and the amplitude. The control module 111 can first compare the amplitude with a preset noise value to determine the validity of the second digital signal. Wherein, the preset noise value can be a noise value preset for determining whether the second digital signal is valid. If the amplitude is less than or equal to the preset noise value, it can be determined that the noise in the second digital signal is too large, and thus it can be determined that the second digital signal is invalid. If the amplitude is greater than the preset noise value, it can be determined that the second digital signal is valid, and then the first frequency and the second frequency can be compared to determine the test result. If the difference value between the second frequency and the first frequency is within a preset error range, it can be determined that the audio link test is successful. If the difference value between the second frequency and the first frequency is outside the preset error range, it can be determined that the audio link test fails.

[0080] Thus, the first electrical signal generated by the transformer collecting and playing the target audio is collected instead of the audio signal corresponding to the target audio, so that the signal collection process can be free from the interference of the test environment. Furthermore, it can be ensured that the first electrical signal does not include the noise signal in the test environment, guaranteeing the accuracy of the first electrical signal. Based on this, the first electrical signal is converted into a second electrical signal by the transformer and the second electrical signal is sent to the analog-to-digital converter, and the second electrical signal is converted into a second digital signal by the analog-to-digital converter and the second digital signal is sent to the slave node of the audio link, enabling the slave node of the audio link to transmit the second digital signal to the smart terminal through the audio link, ensuring that the second digital signal received by the smart terminal does not include the noise signal in the test environment, and further guaranteeing the accuracy of the second digital signal. In this way, by comparing the second digital signal with the first digital signal by the smart terminal and determining that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within the preset error range, and determining that the audio link test fails when the difference value between the second digital signal and the first digital signal is outside the preset error range, the accuracy of testing the audio link can be guaranteed.

[0081] In addition, the test system 100 may include multiple smart terminals 11 and power amplifiers 12, speakers 13, and analog audio receiving devices 14 respectively corresponding to the multiple smart terminals 11.

[0082] Since the present application collects the electrical signal generated by playing the audio instead of the sound signal, even if the phenomenon of co-frequency interference occurs between different test prototypes (i.e., smart devices), it will not affect the collection of the electrical signal. In this way, through the embodiments of the present application, multiple test prototypes can be tested in the same time period, improving the test efficiency without affecting the test accuracy.

[0083] Next, the test method for the audio link applied to the analog audio receiving device provided by the embodiments of the present application will be introduced.

[0084] Figure 2 The flowchart of a test method for an audio link applied to an analog audio receiving device provided by an embodiment of the present application is shown. As Figure 2 shown, the test method for the audio link provided by the embodiment of the present application includes the following steps:

[0085] S210. Collect the first electrical signal generated during the process of the power amplifier driving the speaker to play the target audio, where the target audio is the audio corresponding to the first digital signal, and the first digital signal is the audio signal transmitted from the smart terminal to the power amplifier through the audio link;

[0086] S220. Convert the first electrical signal into a second digital signal;

[0087] S230. Send a second digital signal to the power amplifier via the audio link. The power amplifier is used to send the second digital signal to the smart terminal, so that the smart terminal compares the second digital signal with the first digital signal and determines that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range.

[0088] The test method for the audio link according to the embodiments of the present application collects the first electrical signal generated during the process of the power amplifier driving the speaker to play the target audio, rather than the audio signal, so that the signal collection process can be free from the interference of the test environment. Furthermore, it can be ensured that the first electrical signal does not include the noise signal in the test environment, guaranteeing the accuracy of the first electrical signal. Based on this, by converting the first electrical signal into a second digital signal and transmitting the second digital signal to the smart terminal via the audio link, it can be ensured that the second digital signal received by the smart terminal does not include the noise signal in the test environment, and thus the accuracy of the second digital signal can be guaranteed. In this way, by comparing the second digital signal with the first digital signal by the smart terminal and determining that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range, the accuracy of testing the audio link can be guaranteed.

[0089] The following introduces the specific implementation manners of the above steps.

[0090] In some embodiments, in S210, the smart terminal can be any one of a vehicle-mounted smart terminal, a mobile smart terminal, and a smart wearable device. In addition, the audio link can be used to connect multiple audio devices. When the smart terminal is a vehicle-mounted smart terminal, the audio link can be, for example, an Automotive Audio Bus (A2B).

[0091] As an example, the smart terminal can send a first digital signal to the power amplifier (i.e., power amplifier, Amplifier, AMP) via the audio link. The first digital signal can be a digital signal corresponding to the target audio generated by the smart terminal.

[0092] In addition, the intelligent terminal may include a control module and a main node of the audio link. Among them, the control module may be used to generate a first digital signal with a first frequency corresponding to the target audio (such as a 1KHz standard sine wave), and send the first digital signal to the main node of the audio link. The main node of the audio link may send the first digital signal to the auxiliary test device. Specifically, the control module may include, for example, a Microcontroller Unit (MCU) and a System on a Chip (SOC). If the audio link is an A2B bus, the main node of the audio link may be denoted as A2B master. The AMP may serve as a slave node of the audio link (such as A2B slave1) and be connected to the main node of the audio link to receive the first digital signal sent by the main node of the audio link. That is, the power amplifier may receive the first digital signal sent by the intelligent terminal through the main node of the audio link and transmitted through the audio link.

[0093] In addition, the speaker may be a loudspeaker (SPK) for converting an electrical signal into a sound signal.

[0094] As an example, after receiving the first digital signal, the AMP may drive the SPK to play the target audio corresponding to the first digital signal. During the process of the AMP driving the SPK to play the target audio, a first electrical signal corresponding to the target audio may be generated.

[0095] In addition, the analog audio receiving device may be an analog microphone. The analog audio receiving device may be connected in parallel with the speaker to collect the first electrical signal generated during the process of the AMP driving the SPK to play the target audio.

[0096] As an example, the analog audio receiving device may include a transformer, and the transformer may collect the first electrical signal generated during the process of the AMP driving the SPK to play the target audio.

[0097] Based on this, in order to reduce the noise in the test environment, improve the comfort of the test, and ensure the hearing health of users, in some embodiments, the above S210 may specifically include:

[0098] Play the target audio corresponding to the first digital signal at the target volume, where the target volume is not greater than ten percent of the maximum volume that can be output when playing the target audio.

[0099] Here, the power of the AMP can affect the maximum volume at which the target audio can be output. A user (such as a tester) can adjust the playback volume of the target audio by adjusting the AMP or the speaker. In the embodiments of the present application, since the transformer collects electrical signals rather than sound signals, the playback volume of the target audio does not affect the signal collection effect. Therefore, in order to ensure the hearing health of the user, the user can adjust the playback volume to within the comfortable range of their hearing, and the comfortable range of the user's hearing can be less than or equal to 10% of the maximum volume.

[0100] In this way, by playing the target audio corresponding to the first digital signal according to the target volume, the noise in the test environment can be reduced, the comfort level of the test can be improved, and the hearing health of the user can be ensured.

[0101] In some embodiments, in S220, the analog audio receiving device may further include an analog-to-digital converter (ADC). The ADC can convert the first electrical signal into a second digital signal.

[0102] In actual situations, the first electrical signal is usually a high-level signal. Therefore, in order to ensure that the ADC can smoothly perform the conversion between the electrical signal and the digital signal, in some embodiments, before the above S220, it may further include:

[0103] Converting the high level in the first electrical signal into a low level to obtain a second electrical signal.

[0104] Based on this, the above S220 may specifically include:

[0105] Converting the second electrical signal into a second digital signal.

[0106] In some embodiments, in S230, the analog audio receiving device may further include an audio link slave node (such as A2B slave2). The audio link slave node (such as A2B slave2) can be connected to the power amplifier (such as A2B slave1) through an audio link for signal transmission.

[0107] As an example, if the audio link is an A2B bus, the ADC can send the second digital signal to the A2B slave2. The A2B slave2 can send the second digital signal to the AMP (i.e., A2B slave1) via the A2B bus. The AMP can send the second digital signal to the A2B master via the A2B bus. The A2B master can send the second digital signal to the MCU. After receiving the second digital signal, the MCU can compare the second digital signal with the first digital signal, and determine that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within the preset error range, and determine that the audio link test fails when the difference value between the second digital signal and the first digital signal is outside the preset error range.

[0108] The following introduces the test method for the audio link applied to the intelligent device provided by the embodiments of the present application.

[0109] Figure 3 The flowchart of a test method applied to an intelligent device provided by the embodiments of the present application is shown. As Figure 3 shown, the test method for the audio link provided by the embodiments of the present application includes the following steps:

[0110] S310. Send a first digital signal to the power amplifier through the audio link, and the power amplifier is used to drive the speaker to play the target audio corresponding to the first digital signal;

[0111] S320. Receive a second digital signal sent by the power amplifier through the audio link. The second digital signal is a digital signal obtained by the analog audio receiving device through analog-to-digital conversion of the first electrical signal and sent to the power amplifier through the audio link, and the first electrical signal is the electrical signal generated by playing the target audio;

[0112] S330. Compare the second digital signal with the first digital signal to determine the difference value between the second digital signal and the first digital signal;

[0113] S340. Determine that the audio link test is successful when the difference value is within the preset error range.

[0114] In the audio link test method according to the embodiments of the present application, since the second digital signal is a digital signal obtained by performing analog-to-digital conversion on the first electrical signal, and the first electrical signal is an electrical signal generated during the process of the analog audio receiving device collecting and the power amplifier driving the speaker to play the target audio, it is possible to ensure that the first electrical signal does not include the noise signal in the test environment, ensure the accuracy of the first electrical signal, and further ensure that the second digital signal does not include the noise signal in the test environment, and ensure the accuracy of the second digital signal. Thus, by comparing the second digital signal with the first digital signal through the smart terminal and determining that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within the preset error range, it is possible to ensure the accuracy of the audio link test.

[0115] The following introduces the specific implementation manners of the above steps.

[0116] In some embodiments, in S330 and S340, the first digital signal may include a first frequency, and the first frequency may be, for example, 1 KHz. Based on this, the first digital signal may be a 1 KHz standard sine wave, that is, a standard sound source signal. The second digital signal may include a second frequency and an amplitude. Comparing the second digital signal with the first digital signal may specifically be comparing the second frequency with the first frequency. That is, the difference value between the second digital signal and the first digital signal may specifically be the difference value between the second frequency and the first frequency.

[0117] In addition, the amplitude may be used to determine whether the second digital signal is a valid signal.

[0118] As an example, the preset noise value may be a noise value preset for determining whether the second digital signal is valid. If the amplitude is less than or equal to the preset noise value, it may be determined that the noise in the second digital signal is too large, and further it may be determined that the second digital signal is invalid. If the amplitude is greater than the preset noise value, it may be determined that the second digital signal is valid, and further the first frequency and the second frequency may be compared to determine the test result.

[0119] Based on this, in some embodiments, S330 may specifically include:

[0120] Performing fast Fourier transform processing on the second digital signal to obtain the second frequency and the amplitude;

[0121] When the amplitude is greater than the preset noise value, comparing the second frequency with the first frequency to determine the difference value between the second frequency and the first frequency.

[0122] Here, after receiving the second digital signal, the MCU can perform a Fast Fourier Transform (FFT) on the second digital signal to obtain the second frequency and amplitude corresponding to the second digital signal. The MCU can determine whether the amplitude is greater than a preset noise value, and compare the first frequency and the second frequency when the amplitude is greater than the preset noise value. If the difference value between the first frequency and the second frequency is within a preset error range, it can be determined that the test is successful, and the number of successful tests is updated. Otherwise, it can be determined that the test fails, and the number of failed tests is updated.

[0123] In actual situations, after testing the audio link for a period of time, the test can be paused and the cases of test failure can be analyzed to find the reasons for test failure. Based on this, in the embodiments of the present application, since the second digital signal does not include the noise signal in the test environment, the number of times that should have been successfully tested but actually failed can be reduced, and thus the time for finding the reasons for test failure can be reduced. Therefore, within the same test duration, through the embodiments of the present application, the test frequency can be increased, and thus the accuracy of the reliability test of the audio link can be improved.

[0124] In addition, other steps in the embodiments of the present application can be referred to the above description and will not be elaborated here in detail.

[0125] To better describe the entire solution, based on the above embodiments, some specific examples are given.

[0126] For example, as Figure 4 shown, a test method for an audio link provided by an embodiment of the present application may include the following steps:

[0127] S41. The MCU sends a first digital signal (such as a standard sine wave with a first frequency, where the first frequency can be 1 kHz, for example) to the A2B master node;

[0128] S42. The A2B master node transmits the first digital signal to the power amplifier node (i.e., AMP) through the A2B bus;

[0129] S43. The AMP drives the speaker to emit 1 kHz audio;

[0130] S44. The transformer in the analog microphone collects the first electrical signal generated during the process of the AMP driving the speaker to emit 1 kHz audio, and converts the high level in the first electrical signal into a low level to obtain and send a second electrical signal to the ADC;

[0131] S45. The ADC converts the second electrical signal into a second digital signal and sends the second digital signal to the A2B slave node;

[0132] S46. The A2B slave node sends the second digital signal to the AMP via the A2B bus;

[0133] S47. The AMP sends the second digital signal to the A2B master node via the A2B bus;

[0134] S48. The A2B master node sends the second digital signal to the MCU;

[0135] S49. The MCU performs fast Fourier transform processing on the second digital signal to obtain a second frequency and amplitude corresponding to the second digital signal;

[0136] S410. The MCU determines whether the amplitude is greater than a preset noise value, and compares the first frequency and the second frequency when the amplitude is greater than the preset noise value;

[0137] S411. Determine whether the difference value between the first frequency and the second frequency satisfies being within a preset error range. If so, execute S412; if not, execute S413;

[0138] S412. Determine that the test is successful and update the number of successful tests;

[0139] S413. Determine that the test fails and update the number of failed tests;

[0140] S414. Return to execute S41 until the test duration reaches the preset duration.

[0141] Thus, by collecting the first electrical signal generated by the AMP during driving the speaker to emit a 1 kHz audio through the transformer instead of directly collecting the 1 kHz audio, the signal collection process is not interfered by the test environment, which can ensure that the first electrical signal does not include the noise signal in the test environment, and further can ensure the accuracy of the first electrical signal. By converting the first electrical signal into a second electrical signal, then converting the second electrical signal into a second digital signal, and transmitting the second digital signal to the MCU through the audio link, it can ensure that the second digital signal received by the MCU does not include the noise signal in the test environment, and further can ensure the accuracy of the second digital signal. In this way, by determining whether the test is successful according to the difference value between the first digital signal and the second digital signal by the MCU, the accuracy of testing the audio link can be ensured.

[0142] Based on the test method of the audio link provided in the above embodiments, correspondingly, the present application also provides a specific implementation manner of the analog audio receiving device. Please refer to the following embodiments.

[0143] As Figure 5 shown, the analog audio receiving device 500 provided in the embodiment of the present application includes the following modules:

[0144] The acquisition module 510 is configured to acquire a first electrical signal generated during the process that the power amplifier drives the speaker to play a target audio, where the target audio is the audio corresponding to a first digital signal, and the first digital signal is an audio signal transmitted by the smart terminal to the power amplifier through an audio link;

[0145] The first conversion module 520 is configured to convert the first electrical signal into a second digital signal;

[0146] The first sending module 530 is configured to send the second digital signal to the power amplifier through the audio link. The power amplifier is configured to send the second digital signal to the smart terminal, so that the smart terminal compares the second digital signal with the first digital signal, and determines that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range.

[0147] The above analog audio receiving device 500 is described in detail below, as specifically shown below:

[0148] In some embodiments, the analog audio receiving device 500 may further include:

[0149] The second conversion module is configured to convert the high level in the first electrical signal into a low level to obtain a second electrical signal before converting the first electrical signal into a second digital signal.

[0150] Based on this, the first conversion module 430 may specifically include:

[0151] The conversion sub-module is configured to convert the second electrical signal into a second digital signal.

[0152] The analog audio receiving device in the embodiment of the present application acquires the first electrical signal generated during the process that the power amplifier drives the speaker to play the target audio, rather than the audio signal, so that the signal acquisition process can be free from the interference of the test environment. Furthermore, it can be ensured that the first electrical signal does not include the noise signal in the test environment, and the accuracy of the first electrical signal is guaranteed. Based on this, by converting the first electrical signal into a second digital signal and transmitting the second digital signal to the smart terminal through the audio link, it can be ensured that the second digital signal received by the smart terminal does not include the noise signal in the test environment, and further the accuracy of the second digital signal is guaranteed. In this way, by comparing the second digital signal with the first digital signal by the smart terminal and determining that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within the preset error range, the accuracy of the audio link test can be guaranteed.

[0153] Based on the test method of the audio link provided in the above embodiment, correspondingly, the present application further provides a specific implementation manner of the smart terminal. Please refer to the following embodiments.

[0154] As shown Figure 6 in the figure, the intelligent terminal 600 provided by the embodiment of the present application includes the following modules:

[0155] A second sending module 610, configured to send a first digital signal to a power amplifier through an audio link, where the power amplifier is used to drive a speaker to play a target audio corresponding to the first digital signal;

[0156] A receiving module 620, configured to receive a second digital signal sent by the power amplifier through the audio link, where the second digital signal is a digital signal obtained by an analog audio receiving device through analog-to-digital conversion of a first electrical signal and sent to the power amplifier through the audio link, and the first electrical signal is an electrical signal generated during the playback of the target audio;

[0157] A comparison module 630, configured to compare the second digital signal with the first digital signal to determine a difference value between the second digital signal and the first digital signal;

[0158] A determination module 640, configured to determine that the audio link test is successful when the difference value is within a preset error range.

[0159] The above intelligent terminal 600 will be described in detail below, specifically as follows:

[0160] In some embodiments, the first digital signal includes a first frequency. Based on this, the comparison module 630 may include:

[0161] A processing sub-module, configured to perform fast Fourier transform processing on the second digital signal to obtain a second frequency and an amplitude;

[0162] A comparison sub-module, configured to compare the second frequency with the first frequency to determine the difference value between the second frequency and the first frequency when the amplitude is greater than a preset noise value.

[0163] In the intelligent terminal of the embodiment of the present application, since the second digital signal is a digital signal obtained by analog-to-digital conversion of the first electrical signal, and the first electrical signal is an electrical signal collected by an analog audio receiving device during the process of the power amplifier driving the speaker to play the target audio, it is possible to ensure that the first electrical signal does not include noise signals in the test environment, ensure the accuracy of the first electrical signal, and further ensure that the second digital signal does not include noise signals in the test environment, ensure the accuracy of the second digital signal. In this way, by comparing the second digital signal with the first digital signal through the intelligent terminal and determining that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range, it is possible to ensure the accuracy of the audio link test.

[0164] Based on the audio link test method provided in the above embodiments, the embodiments of the present application also provide a specific implementation manner of an electronic device. Figure 7 FIG. shows a schematic diagram of an electronic device 700 provided by an embodiment of the present application.

[0165] The electronic device 700 may include a processor 710 and a memory 720 storing computer program instructions.

[0166] Specifically, the above-mentioned processor 710 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0167] The memory 720 may include a mass storage for data or instructions. By way of example and not limitation, the memory 720 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In a suitable case, the memory 720 may include a removable or non-removable (or fixed) medium. In a suitable case, the memory 720 may be internal or external to the electronic device 700. In a particular embodiment, the memory 720 is a non-volatile solid state memory.

[0168] The memory may include a read only memory (ROM), a random access memory (RAM), a magnetic disk storage media device, an optical storage media device, a flash memory device, an electrical, optical, or other physical / tangible memory storage device. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to the first aspect of the present application.

[0169] The processor 710 reads and executes the computer program instructions stored in the memory 720 to implement any one of the audio link test methods in the above embodiments.

[0170] In one example, the electronic device 700 may further include a communication interface 730 and a bus 740. Among them, as Figure 7 shown, the processor 710, the memory 720, and the communication interface 730 are connected through the bus 740 and complete communication with each other.

[0171] The communication interface 730 is mainly used to implement communication between various modules, devices, units, and / or equipment in the embodiments of the present application.

[0172] The bus 740 includes hardware, software, or both, and couples the components of the electronic device to each other. By way of example and not limitation, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses or a combination of two or more of these. In suitable cases, the bus 740 may include one or more buses. Although the embodiments of the present application describe and illustrate specific buses, the present application contemplates any suitable bus or interconnect.

[0173] Exemplarily, the electronic device 700 may be a mobile phone, a tablet computer, a laptop computer, a handheld computer, an in-vehicle electronic device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc.

[0174] The electronic device can execute the test method of the audio link in the embodiments of the present application, so as to implement the combination of Figures 2 to 4 the described test method of the audio link.

[0175] In addition, in combination with the test method of the audio link in the above embodiments, the embodiments of the present application can be implemented by providing a computer-readable storage medium. Computer program instructions are stored on the computer-readable storage medium; when the computer program instructions are executed by a processor, any one of the test methods of the audio link in the above embodiments is implemented.

[0176] In addition, the embodiments of the present application further provide a vehicle, which may include at least one of the following:

[0177] An analog audio receiving device as in any embodiment of the third aspect;

[0178] An intelligent terminal as in any embodiment of the fourth aspect;

[0179] A test system for an audio link as in any embodiment of the fifth aspect;

[0180] An electronic device as in any embodiment of the sixth aspect;

[0181] A computer-readable storage medium as in any of the embodiments of the seventh aspect. Details are not repeated here.

[0182] It should be clear that the present application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order between steps after understanding the spirit of the present application.

[0183] The functional blocks shown in the above-described structural block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application-specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present application are programs or code segments for performing the required tasks. The program or code segment can be stored in a machine-readable medium or transmitted via a data signal carried in a carrier wave on a transmission medium or a communication link. A "machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical discs, hard disks, fiber optic media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0184] It should also be noted that the exemplary embodiments mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps, that is, the steps can be executed in the order mentioned in the embodiments, or different from the order in the embodiments, or several steps can be executed simultaneously.

[0185] As described above with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present application. It should be understood that each block in the flowchart and / or block diagram, and the combinations of blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine, such that the instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the functions / actions specified in one or more blocks of the flowchart and / or block diagram. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field programmable logic circuit. It is also understood that each block in the block diagram and / or flowchart, and the combinations of blocks in the block diagram and / or flowchart, can also be implemented by dedicated hardware that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0186] As described above, the above is only the specific implementation manner of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present application.

Claims

1. A test method for an audio link, characterized in that Including: Collecting a first electrical signal generated by a power amplifier during driving a speaker to play a target audio, where the target audio is an audio corresponding to a first digital signal, and the first digital signal is an audio signal transmitted by a smart terminal to the power amplifier through an audio link; Converting the first electrical signal into a second digital signal; Sending the second digital signal to the power amplifier through the audio link, where the power amplifier is used to send the second digital signal to the smart terminal, so that the smart terminal compares the second digital signal with the first digital signal, and determines that the audio link test is successful when a difference value between the second digital signal and the first digital signal is within a preset error range.

2. The method according to claim 1, wherein Before converting the first electrical signal into a second digital signal, the method further includes: Converting a high level in the first electrical signal into a low level to obtain a second electrical signal; The converting the first electrical signal into a second digital signal includes: Converting the second electrical signal into the second digital signal.

3. A test method for an audio link, characterized in that Including: Sending a first digital signal to a power amplifier through an audio link, where the power amplifier is used to drive a speaker to play a target audio corresponding to the first digital signal; Receiving, through the audio link, a second digital signal sent by the power amplifier, where the second digital signal is a digital signal obtained by an analog audio receiving device through analog-to-digital conversion of a first electrical signal and sent to the power amplifier through the audio link, and the first electrical signal is an electrical signal generated by playing the target audio; Comparing the second digital signal with the first digital signal to determine a difference value between the second digital signal and the first digital signal; Determining that the audio link test is successful when the difference value is within a preset error range.

4. The method according to claim 3, characterized in that, The first digital signal includes a first frequency. The comparing the second digital signal with the first digital signal to determine a difference value between the second digital signal and the first digital signal includes: Performing a fast Fourier transform process on the second digital signal to obtain a second frequency and an amplitude; When the amplitude is greater than a preset noise value, comparing the second frequency with the first frequency to determine the difference value between the second frequency and the first frequency.

5. An analog audio receiving device, characterized in that, Including: A collecting module, configured to collect a first electrical signal generated by a power amplifier during driving a speaker to play a target audio, where the target audio is an audio corresponding to a first digital signal, and the first digital signal is an audio signal transmitted by a smart terminal to the power amplifier through an audio link; A first conversion module, configured to convert the first electrical signal into a second digital signal; A first transmission module, configured to transmit the second digital signal to the power amplifier via the audio link, where the power amplifier is configured to transmit the second digital signal to the smart terminal, so that the smart terminal compares the second digital signal with the first digital signal, and determines that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range.

6. An intelligent terminal, characterized in that, Comprising: A second transmission module, configured to transmit a first digital signal to the power amplifier via the audio link, where the power amplifier is configured to drive the speaker to play a target audio corresponding to the first digital signal; A receiving module, configured to receive, via the audio link, a second digital signal sent by the power amplifier, where the second digital signal is a digital signal obtained by an analog audio receiving device through analog-to-digital conversion of a first electrical signal and sent to the power amplifier via the audio link, and the first electrical signal is an electrical signal generated by playing the target audio; A comparison module, configured to compare the second digital signal with the first digital signal to determine a difference value between the second digital signal and the first digital signal; A determination module, configured to determine that the audio link test is successful when the difference value is within a preset error range.

7. A test system for an audio link, characterized in that, Including a smart terminal, a power amplifier, a speaker, and an analog audio receiving device; The smart terminal is connected to the power amplifier via the audio link, and is configured to transmit a first digital signal corresponding to a target audio to the power amplifier via the audio link, and compare the received second digital signal with the first digital signal, and determine that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range; The power amplifier is connected to the speaker and is connected to the analog audio receiving device via the audio link, and is configured to drive the speaker to play the target audio corresponding to the first digital signal, and when receiving the second digital signal sent by the analog audio receiving device via the audio link, transmit the second digital signal to the smart terminal via the audio link; The analog audio receiving device is connected in parallel with the speaker, and is configured to collect a first electrical signal generated by the power amplifier during the process of driving the speaker to play the target audio, convert the high level in the first electrical signal to a low level to obtain a second electrical signal, and convert the second electrical signal to the second digital signal, and transmit the second digital signal to the power amplifier via the audio link.

8. The system according to claim 7, characterized in that, The analog audio receiving device includes a transformer, an analog-to-digital converter, and an audio link slave node; The transformer is connected to the analog-to-digital converter, and is configured to collect the first electrical signal, convert the high level in the first electrical signal to a low level, and obtain and transmit the second electrical signal to the analog-to-digital converter; The analog-to-digital converter is connected to the audio link slave node, and is configured to convert the second electrical signal into the second digital signal and send the second digital signal to the audio link slave node; The audio link slave node is configured to send the second digital signal to the power amplifier through the audio link.

9. The system according to claim 7, wherein The intelligent terminal includes a control module and an audio link master node; The control module is connected to the audio link master node, and is configured to send the first digital signal to the audio link master node, compare the received second digital signal with the first digital signal, and determine that the audio link test is successful when the difference value between the second digital signal and the first digital signal is within a preset error range; The audio link master node is connected to the power amplifier through the audio link, and is configured to send the first digital signal to the power amplifier through the audio link, receive the second digital signal sent by the power amplifier through the audio link, and send the second digital signal to the control module.

10. An electronic device, characterized in that, The electronic device includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the test method of the audio link according to any one of claims 1-2 or 3-4 is implemented.

11. A computer-readable storage medium, characterized in that, Computer program instructions are stored on the computer-readable storage medium, and when the computer program instructions are executed by the processor, the test method of the audio link according to any one of claims 1-2 or 3-4 is implemented.

12. A vehicle, characterized in that, Includes at least one of the following: The analog audio receiving device according to claim 5; The intelligent terminal according to claim 6; The test system of the audio link according to any one of claims 7-9; The electronic device according to claim 10; The computer-readable storage medium according to claim 11.

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