Acceleration Sound and Power Response Follow-up Matching Degree Sound Quality Evaluation Method, Electronic Device and Storage Medium

Abstract

The present invention discloses a method for evaluating sound quality by accelerating the matching degree of sound and power response, an electronic device and a computer-readable storage medium. By integrating subjective evaluation factors of humans and objective test factors of dynamic noise, the matching degree is comprehensively obtained as the response matching degree. Using this method can guide the vehicle manufacturer to pay attention to the matching degree of the in-vehicle accelerating sound and the following of the accelerating power response during the sound design and power matching calibration process, and improve the sound quality of the user's driving and riding.

Description

Technical Field

[0001] The present invention belongs to the field of vehicle NVH (Noise, Vibration, Harshness), and specifically relates to the sound quality evaluation of the matching degree between the acceleration sound and the power response in terms of acceleration power sound quality. Background Art

[0002] During the process of driving a vehicle, consumers pay high attention to the matching degree between the in-vehicle acceleration sound and the vehicle power response. For example, when starting to accelerate, stepping on the accelerator pedal, it is found that the acceleration is not obvious, lacking power, while the engine speed soars and the engine sound has a hysterical feeling, which significantly shows that the vehicle acceleration sound does not match the power performance, seriously affecting the acceleration engine sound quality, and even consumers will complain or lodge a complaint about the acceleration power sound quality of this vehicle model.

[0003] Most of the relevant evaluations of the vehicle acceleration power sound quality are carried out from the overall preference degree of the sound quality, or from dimensions such as the dynamic sense and linearity of the sound quality, and rarely pay attention to the problem of the matching between the vehicle acceleration power performance and the sound. Analyzing the acceleration power sound quality separately from the vehicle power response is divorced from the actual user acceleration scenario, and there are limitations in the research on the vehicle power sound quality.

[0004] A method for comprehensively evaluating the vehicle power sound quality with the publication number of CN111898888A evaluates the power sound quality from four dimensions: sound size, sound dynamic sense, sound linearity, and sound insulation satisfaction degree, focusing on the concerns of consumers about the vehicle power sound quality. However, the disadvantage is that it ignores the problems such as slow power response and large acceleration sound during the acceleration process, which will affect the driving mood of users and also affect the quality sense evaluation of the acceleration power sound.

[0005] A method for evaluating and analyzing the user's power sound preference in multiple scenarios and multiple dimensions with the publication number of CN114187031A evaluates from five aspects: the linearity of the acceleration sound, the dynamic sense of the sound, the sound size, the sound enclosure, and the matching degree between the sound and the power and the accelerator pedal. This method mentions the subjective evaluation dimension of the matching degree between the acceleration power performance and the acceleration sound, but the disadvantage is that it is only a subjective evaluation and there is no objective test evaluation method for the matching degree between the acceleration sound and the acceleration power performance.

[0006] A user experience evaluation method for the vehicle power acceleration performance, mainly invented a user experience evaluation method for the vehicle power acceleration performance. This method judges the user experience of the power acceleration performance through the relationship between the power acceleration response time and the power acceleration sound following time under specific vehicle speed conditions. This method takes into account that the change of the engine sound during acceleration will significantly affect the user's judgment and experience of the vehicle's acceleration power. However, the focus of this method is on the evaluation of power performance, and it does not evaluate the matching degree between the acceleration sound and the power performance from the dimension of acceleration sound quality. Summary of the Invention

[0007] The present invention discloses an acoustic quality evaluation method for the matching degree of acceleration sound and power response following, which combines the subjective factors of the tested personnel and the objective factors of the noise source to evaluate the power acoustic quality.

[0008] The present invention also discloses an electronic device, and a program for executing the acoustic quality evaluation method for the matching degree of acceleration sound and power response following is run by a processor.

[0009] The present invention also discloses a computer-readable storage medium, which stores a computer program, and the computer program executes the acoustic quality evaluation method for the matching degree of acceleration sound and power response following.

[0010] The acoustic quality evaluation method for the matching degree of acceleration sound and power response following disclosed by the present invention includes the following steps:

[0011] Step 1: Combine the user's acceleration usage scenario and define the acceleration sub-scenarios commonly used by the user.

[0012] Step 2: Arrange the vehicle working conditions and related signal acquisition devices for the acceleration sub-scenarios in the vehicle state.

[0013] Step 3: Conduct tests for each acceleration sub-scenario respectively, and collect the noise time-domain signals under the corresponding working conditions.

[0014] Step 4: Select the valid data determined for each acceleration sub-scenario in Step 3, and calculate the matching degree M of the acceleration sound and the power response following under the acceleration sub-working conditions i =△P i / △t i , where △P i is the difference between the maximum sound pressure level and the minimum sound pressure level of the in-vehicle acceleration noise, and △t i is the acceleration time.

[0015] Step 5: According to the user's attention to the acoustic quality under the acceleration sub-scenario and the attention to the matching degree of the acceleration sound and the power response following under this scenario, determine the weighting coefficient K of the matching degree of the acceleration sound and the power response following under different acceleration sub-scenarios i .

[0016] Step 6, calculate the matching degree M between the vehicle acceleration sound and the power response follow-up:

[0017]

[0018] Among them, K i is the weighting coefficient under different refined acceleration scenarios, i is the i-th refined acceleration scenario, M i is the matching degree between the acceleration sound and the power response follow-up under the refined acceleration scenario, N is the refined scenario variable; the lower the M value, the better the matching degree between the vehicle acceleration sound and the power response follow-up.

[0019] Furthermore, in Step 2, arrange the vehicle working conditions and related signal acquisition equipment for the refined acceleration scenarios under the vehicle's whole state. Specifically,

[0020] The CAN signal reading device is connected to the fault detection interface of the vehicle's self-diagnosis system OBD to obtain the vehicle speed and throttle opening signals. At the same time, arrange the microphone at the position of the driver's right ear in the vehicle under the vehicle's whole state. Finally, connect the CAN signal reading device, the microphone and the vehicle-mounted data acquisition device.

[0021] Install a vehicle-mounted display device for displaying the throttle opening and vehicle speed in the area observable by the driver, so as to facilitate the driver to pay attention to the throttle opening information during driving.

[0022] Furthermore, divide the acceleration scenarios into a starting acceleration scenario, a low-speed acceleration scenario, a medium-speed acceleration scenario, a high-speed acceleration scenario, a sudden acceleration scenario and a climbing acceleration scenario.

[0023] Furthermore, in Step 3, for the vehicle working conditions corresponding to the starting acceleration scenario, the low-speed acceleration scenario, the medium-speed acceleration scenario and the high-speed acceleration scenario, the specific tests are as follows.

[0024] 1) Starting acceleration scenario, on a flat and smooth asphalt road surface, the vehicle accelerates from idle speed to a vehicle speed of 20 km / h with a throttle opening of 25% ± 2%, and collect the noise time-domain signal under this working condition;

[0025] 2) Low-speed acceleration scenario, on a flat and smooth asphalt road surface, collect the vehicle accelerating from 20 km / h to a vehicle speed of 40 km / h with a throttle opening of 25% ± 2%, and collect the noise time-domain signal and vehicle speed signal under this working condition;

[0026] 3) Medium-speed acceleration scenario, on a flat and smooth asphalt road surface, collect the vehicle accelerating from 40 km / h to a vehicle speed of 80 km / h with a throttle opening of 25% ± 2%, and collect the noise time-domain signal and vehicle speed signal under this working condition;

[0027] 4) High-speed acceleration scenario, on a flat and smooth asphalt road surface, collect the vehicle accelerating from 80 km / h to 120 km / h with a throttle opening of 50% ± 2%, and collect the noise time-domain signal and vehicle speed signal under this working condition.

[0028] Furthermore, in step three, for the vehicle working conditions corresponding to the rapid acceleration scenario, the specific tests are as follows:

[0029] Rapid acceleration scenario, on a flat and smooth asphalt road surface, collect the vehicle accelerating from 1000 rpm to the rated speed with a throttle opening of 75% ± 2%, and collect the noise time-domain signal and engine speed signal under this working condition.

[0030] Furthermore, in step three, for the vehicle working conditions corresponding to the climbing acceleration scenario, the specific tests are as follows:

[0031] Climbing acceleration scenario, on a smooth asphalt road surface without curves with a slope greater than 8 degrees, collect the vehicle accelerating from 1500 rpm to the rated speed with a throttle opening of 75% ± 2%, and collect the noise time-domain signal and engine speed signal under this working condition.

[0032] The present invention also discloses an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor executes the program to implement the acceleration sound and power response following matching degree sound quality evaluation method as described above.

[0033] The present invention also discloses a computer-readable storage medium, on which a computer program is stored, and the program is executed by a processor to be used to implement the acceleration sound and power response following matching degree sound quality evaluation method.

[0034] The beneficial technical effects of the present invention are as follows:

[0035] According to the sound quality evaluation method of the acceleration sound and power response following matching degree in the vehicle, the present invention combines the subjective evaluation factors of people and the objective test factors of dynamic noise into the response matching degree. Using this method can guide the vehicle manufacturer to pay attention to the acceleration sound and acceleration power response following matching degree in the process of sound design and power matching calibration, and improve the sound quality of the user's driving and riding. Description of the Drawings

[0036] Figure 1 Automobile acceleration sound and acceleration power response following matching degree evaluation process. Detailed Embodiments

[0037] The acceleration sound and power response following matching degree sound quality evaluation method disclosed by the present invention includes the following steps:

[0038] Step 1: Combine with the user's acceleration usage scenarios and define six commonly used acceleration sub-scenarios for users: namely, starting acceleration, low-speed acceleration, medium-speed acceleration, high-speed acceleration, sudden acceleration, and climbing acceleration. The detailed description of each scenario is shown in Table 1.

[0039] Table 1

[0040]

[0041] Step 2: Test preparation and connection of acquisition devices. With the vehicle in a complete state, arrange the microphone at the position of the driver's right ear, connect the CAN signal reading device for obtaining vehicle speed and throttle opening through the vehicle OBD fault detection interface, and connect the microphone and the CAN signal reading device to the vehicle-mounted data acquisition device. At the same time, install a vehicle-mounted display device for displaying throttle opening and vehicle speed in the observable area of the driver, so as to facilitate the driver to pay attention to information such as throttle opening during driving.

[0042] Step 3: Conduct tests for each acceleration sub-scenario respectively, and collect the noise time-domain signals under the corresponding working conditions. The specific test requirements are as follows:

[0043] 1) Test for starting acceleration working condition. On a flat and smooth asphalt road surface, the vehicle accelerates from idle speed to a vehicle speed of 20 km / h with a throttle opening of 25% ± 2%, and collect the noise time-domain signals under this working condition, collecting at least three groups of data;

[0044] Under the starting acceleration working condition, the vehicle accelerates from idle speed to a vehicle speed of 20 km / h with a throttle opening of 25% ± 2%. During this period, collect the in-vehicle noise and vehicle speed signals. After selecting and determining valid data, calculate the in-vehicle noise △P i (the difference between the maximum sound pressure level and the minimum sound pressure level) and the acceleration time △t i , and calculate M i =△P i / △t i .

[0045] 2) Test for low-speed acceleration working condition. On a flat and smooth asphalt road surface, collect the vehicle accelerating from 20 km / h to a vehicle speed of 40 km / h with a throttle opening of 25% ± 2%, and collect the noise time-domain signals and vehicle speed signals under this working condition, collecting at least three groups of data;

[0046] 3) Test for medium-speed acceleration working condition. On a flat and smooth asphalt road surface, collect the vehicle accelerating from 40 km / h to a vehicle speed of 80 km / h with a throttle opening of 25% ± 2%, and collect the noise time-domain signals and vehicle speed signals under this working condition, collecting at least three groups of data.

[0047] 4) High-speed acceleration condition test. On a flat, smooth asphalt road surface, collect the vehicle's noise time-domain signal and vehicle speed signal when the vehicle accelerates from 80 km / h to 120 km / h with a throttle opening of 50% ± 2%, and collect at least three groups of data.

[0048] 5) Sudden acceleration condition test. On a flat, smooth asphalt road surface, collect the vehicle's noise time-domain signal and engine speed signal when the vehicle accelerates from 1000 rpm to the rated speed with a throttle opening of 75% ± 2%, and collect at least three groups of data.

[0049] 6) Climbing acceleration condition test. On a smooth asphalt road surface without curves with a slope greater than 8 degrees, collect the vehicle's noise time-domain signal and engine speed signal when the vehicle accelerates from 1500 rpm to the rated speed with a throttle opening of 75% ± 2%, and collect at least three groups of data.

[0050] Step 4: Select the valid data for the six acceleration sub-scenarios in Step 3 respectively, and calculate the in-vehicle acceleration noise △P (or within the corresponding rotational speed range) under the acceleration sub-conditions i (△P i is the difference between the maximum sound pressure level and the minimum sound pressure level of the in-vehicle acceleration noise) and the acceleration time △t.

[0051] In the starting acceleration condition, calculate the in-vehicle noise △P i and the acceleration time △t i , and calculate M i = △P i / △t i .

[0052] In the low-speed acceleration condition, calculate △P i and △t i during the corresponding acceleration time period of 20 km / h to 40 km / h.

[0053] In the medium-speed acceleration condition, calculate the in-vehicle noise △P i and the acceleration time △t i during the vehicle speed range of 40 km / h to 80 km / h, and calculate M i = △P i / △t i .

[0054] In the high-speed acceleration condition, calculate the in-vehicle noise △P i and the acceleration time △t i during the vehicle speed range of 80 km / h to 120 km / h, and calculate M i = △P i / △t i .

[0055] Under the full-throttle acceleration condition, calculate the in-vehicle noise △P within the range from 1000 rpm to the rated speed i and the acceleration time △t i , and calculate M i = △P i / △t i .

[0056] Under the uphill acceleration condition, calculate the in-vehicle noise △P within the range from 1500 rpm to the rated speed i and the acceleration time △t i , and calculate M i = △P i / △t i .

[0057] Finally, calculate the matching degree M of the acceleration sound and the power response following under the refined acceleration condition i = △P i / △t i .

[0058] Step 5: Through research and big data analysis, determine the weighting coefficient K of the matching degree of the acceleration sound and the power response following under different refined acceleration scenarios according to the user's attention to the sound quality under the refined acceleration scenarios and the attention to the matching degree of the acceleration sound and the power response following under this scenario i ; see Table 2 for details

[0059] Table 2 Weighting coefficient K of the matching degree of the acceleration power sound and the power response following under different refined acceleration conditions i

[0060] Accelerated fine division working condition <![CDATA[Acceleration sound and power response follow matching coefficient K i > Starting acceleration 0.20 Low-speed acceleration 0.10 Medium-speed acceleration 0.10 High-speed acceleration 0.15 Sudden acceleration 0.30 Ramp acceleration 0.15

[0061] Step 6: Calculate the matching degree M of the vehicle's acceleration sound and the power response following

[0062]

[0063] where K i is the weighting coefficient under different refined acceleration scenarios, i is 6 refined acceleration scenarios, and M i is the matching degree of the acceleration sound and the power response following under the refined acceleration scenario. In the acceleration condition, the lower the M value, the better the matching degree of the power acceleration sound and the acceleration power response following

Claims

1. An evaluation method for sound quality of accelerating sound and power response following matching degree, characterized in that: It includes the following steps: Step 1: Combine the user's acceleration usage scenarios and define the commonly used acceleration sub-scenarios of the user. Step 2: Arrange the vehicle working conditions and related signal acquisition devices for the acceleration sub-scenarios in the whole vehicle state. Step 3: Conduct tests for each acceleration sub-scenario respectively and collect the noise time-domain signals under the corresponding working conditions. Step 4: Select the valid data for each accelerated sub-scenario in Step 3, and calculate the matching degree M between the acceleration sound and the power response under the accelerated sub-conditions i = ΔP i / Δt i , where ΔP i is the difference between the maximum sound pressure level and the minimum sound pressure level of the in-vehicle acceleration noise, and Δt i is the acceleration time; Step 5: Determine the weighted coefficient K of the matching degree between the power acceleration sound and the power response following in different acceleration sub-scenarios according to the user's attention to the sound quality in the acceleration sub-scenarios and the attention to the matching degree between the acceleration sound and the power response following in this scenario i ; Step 6: Calculate the matching degree M between the vehicle acceleration sound and the power response follow-up. Among them, K i is the weighting coefficient under different acceleration refinement scenarios, i is the i-th acceleration refinement scenario, M i is the matching degree of the acceleration sound and the power response following under the acceleration subdivision scenario, and N is the subdivision scenario variable; the lower the M value, the better the matching degree of the vehicle acceleration sound and the power response following.

2. The method for evaluating sound quality by accelerating the matching degree of sound and power response as described in claim 1, characterized in that: In Step 2, arrange the vehicle working conditions and related signal acquisition devices for the acceleration sub-scenarios in the whole vehicle state. Specifically, The CAN signal reading device is connected to the fault detection interface of the vehicle self-diagnosis system OBD to obtain the vehicle speed and throttle opening signals. At the same time, in the whole vehicle state, the microphone is arranged at the position of the driver's right ear in the vehicle. Finally, the CAN signal reading device, the microphone and the vehicle-mounted data acquisition device are connected. Install a vehicle-mounted display device for displaying the throttle opening and vehicle speed in the area observable by the driver, so that the driver can pay attention to the throttle opening information during driving.

3. The method for evaluating the sound quality of the matching degree of the accelerated sound and the power response as described in claim 1, characterized in that: The acceleration scenarios are subdivided into starting acceleration scenarios, low-speed acceleration scenarios, medium-speed acceleration scenarios, high-speed acceleration scenarios, sudden acceleration scenarios and climbing acceleration scenarios.

4. The method for evaluating sound quality of the matching degree of accelerated sound and power response following as claimed in claim 3, wherein: In Step 3, for the vehicle working conditions corresponding to the starting acceleration scenario, low-speed acceleration scenario, medium-speed acceleration scenario and high-speed acceleration scenario, the specific tests are as follows: 1) Starting acceleration scenario: On a flat and smooth asphalt road surface, the vehicle accelerates from idling speed to a vehicle speed of 20 km / h with a throttle opening of 25% ± 2%, and collect the noise time-domain signal under this working condition. 2) Low-speed acceleration scenario: On a flat and smooth asphalt road surface, collect the vehicle accelerating from 20 km / h to a vehicle speed of 40 km / h with a throttle opening of 25% ± 2%, and collect the noise time-domain signal and vehicle speed signal under this working condition. 3) Medium-speed acceleration scenario: On a flat and smooth asphalt road surface, collect the vehicle accelerating from 40 km / h to a vehicle speed of 80 km / h with a throttle opening of 25% ± 2%, and collect the noise time-domain signal and vehicle speed signal under this working condition. 4) High-speed acceleration scenario: On a flat and smooth asphalt road surface, collect the vehicle accelerating from 80 km / h to a vehicle speed of 120 km / h with a throttle opening of 50% ± 2%, and collect the noise time-domain signal and vehicle speed signal under this working condition.

5. The method for evaluating sound quality of acceleration sound and power response following matching degree according to claim 3, characterized in that: In Step 3, for the vehicle working conditions corresponding to the sudden acceleration scenario, the specific test is as follows: Sudden acceleration scenario, on a flat and smooth asphalt road surface, collect the vehicle accelerating from 1000 rpm to the rated speed with a throttle opening of 75% ± 2%, and collect the noise time-domain signal and engine speed signal under this working condition.

6. The method for evaluating the sound quality of the matching degree of the acceleration sound and the power response as described in claim 3, characterized in that: In Step 3, for the vehicle working conditions corresponding to the climbing acceleration scenario, the specific tests are as follows: Climbing acceleration scenario: On a smooth asphalt road surface without curves with a slope greater than 8 degrees, collect the vehicle accelerating from 1500 rpm to the rated speed with a throttle opening of 75% ± 2%, and collect the noise time-domain signal and engine speed signal under this working condition.

7. An electronic device, characterized in that, It includes: A memory, a processor and a computer program stored on the memory and executable on the processor, and the processor executes the program to implement the acceleration sound and power response follow-up matching degree sound quality evaluation method according to any one of claims 1 to 6.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by a processor to implement the accelerated sound and power response following matching sound quality evaluation method according to any one of claims 1 to 6.

Images