Engine power adjusting method, device and equipment, readable storage medium and vehicle
By collecting and processing audio signals in the vehicle, determining the masking threshold and adjusting the engine power, the problem of unsatisfactory noise masking effect in the vehicle cockpit in the prior art is solved, and a more efficient noise reduction effect is achieved.
Patent Information
- Application Number
- CN202311031207.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-16
- Publication Date
- 2025-02-21
AI Technical Summary
The prior art is not ideal in reducing noise in the cabin of a vehicle, especially under different environmental factors, and it is impossible to effectively mask engine noise.
By collecting the initial audio signal in the vehicle cockpit, filtering out the engine noise signal, obtaining the target audio signal, and performing masking effect analysis, determining the masking threshold, and adjusting the engine power based on this to achieve effective masking of noise.
The noise reduction effect in the vehicle cockpit is improved, and the engine power can be adjusted in real time according to changes in ambient noise, ensuring that the engine noise is fully masked and reducing the impact on passengers.
Smart Images
Figure CN119495282A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicle technology, and in particular to an engine power adjustment method, device, equipment, readable storage medium and vehicle. Background Art
[0002] NVH (Noise, Vibration, and Harshness) is a key indicator for measuring vehicle dynamic performance and directly impacts overall ride comfort. As demand for vehicle comfort continues to grow, NVH has become a key performance metric that major automakers are focusing on and actively pursuing.
[0003] During vehicle driving, the noise generated by the engine is an important factor affecting NVH. Therefore, in the prior art, the engine power is usually adjusted in a preset manner to change the engine's operating mode to reduce the noise emitted by the engine.
[0004] However, during the driving process of the vehicle, different environmental factors such as wind speed and road surface will cause differences in environmental noise, resulting in changes in the total noise entering the cabin (including environmental noise and engine noise), making the existing method of reducing noise by controlling engine power still not ideal. Summary of the Invention
[0005] The present application provides an engine power adjustment method, device, equipment, readable storage medium and vehicle to solve the current problem of poor noise reduction effect in the vehicle cabin.
[0006] To solve the above problems, the present application provides, in a first aspect, a method for adjusting engine power, the method comprising:
[0007] Collecting initial audio signals in the vehicle cabin;
[0008] filtering a first noise signal in the initial audio signal to obtain a target audio signal, wherein the first noise signal is a noise signal emitted by an engine of the vehicle;
[0009] Performing a masking effect analysis on the target audio signal as a masking sound to obtain a masking threshold for the noise signal emitted by the engine, wherein the masking threshold represents the minimum sound intensity that can be sensed by the human ear;
[0010] Based on the masking threshold, the power of the engine is adjusted.
[0011] A second aspect of the present application provides an engine power adjustment device, the device comprising:
[0012] An acquisition module, used to acquire initial audio signals in the vehicle cabin;
[0013] a first acquisition module, configured to filter a first noise signal from the initial audio signal to obtain a target audio signal, wherein the first noise signal is a noise signal emitted by an engine of the vehicle;
[0014] a second acquisition module, configured to perform a masking effect analysis on the target audio signal as a masking sound, and obtain a masking threshold for the noise signal emitted by the engine, wherein the masking threshold represents the minimum sound intensity that can be sensed by the human ear;
[0015] An adjustment module is configured to adjust the power of the engine based on the masking threshold.
[0016] A third aspect of the present application provides an electronic device, comprising a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of the engine power adjustment method described in the first aspect are implemented.
[0017] A fourth aspect of the present application provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the engine power adjustment method as described in the first aspect are implemented.
[0018] A fifth aspect of the present application provides a vehicle, comprising a vehicle-mounted system, which, when executed, is used to implement the steps of the engine power adjustment method as described in the first aspect.
[0019] The method provided in the embodiment of the present application collects an initial audio signal in a vehicle cabin; filters out a first noise signal in the initial audio signal to obtain a target audio signal, wherein the first noise signal is the noise signal emitted by the vehicle's engine; performs a masking effect analysis on the target audio signal as a masking sound to obtain a masking threshold for the noise signal emitted by the engine, wherein the masking threshold represents the minimum sound intensity that can be sensed by the human ear; and adjusts the power of the engine based on the masking threshold. In the above steps, since the initial audio signal is related to the current environment in which the vehicle is located, the masking effect of the environmental noise on the noise emitted by the engine is taken into account, and the power of the engine is adjusted based on the initial audio signal, so that the noise emitted by the engine is fully masked by the environmental noise, reducing the impact of the noise emitted by the engine on users in the vehicle cabin, thereby improving the noise reduction effect in the vehicle cabin. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 A schematic diagram of a flow chart of an engine power adjustment method provided in an embodiment of the present application;
[0021] Figure 2 Another schematic flow chart of the engine power adjustment method provided in an embodiment of the present application;
[0022] Figure 3 A structural diagram of an engine power adjustment device provided in an embodiment of the present application;
[0023] Figure 4 This is a structural diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0024] In order to more clearly understand the above-mentioned objectives, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.
[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application can also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present application, not all of the embodiments.
[0026] like Figure 1 As shown, an embodiment of the present application provides an engine power adjustment method, the method comprising the following steps 101 to 104, wherein:
[0027] Step 101: Collect initial audio signals in the vehicle cabin.
[0028] Exemplarily, the initial audio signal can be collected by a microphone arranged in the main driving area of the vehicle. The microphone can be arranged on the main driving seat, or on the steering wheel, or on the roof above the main driving seat, which is not limited here.
[0029] The initial audio signal includes a first audio signal emitted by a sound source in the cabin, and a second audio signal obtained by noise reduction processing of an ambient audio signal. The sound source of the ambient audio signal is located outside the cabin. The first audio signal can be at least one of an audio signal played in the cabin and an audio signal emitted manually. For example, the audio signal emitted manually can be the sound of speaking, the sound of eating, etc.
[0030] The ambient audio signal is an audio signal emitted by a sound source located outside the cabin, such as the roar of vehicles on the road, the noise of vehicle engines, the sounds of pedestrians, thunder, rain, or wind, etc. An in-vehicle spatial audio system is installed in the vehicle to reduce the noise of the ambient audio signal entering the cabin to obtain a second audio signal. The in-vehicle spatial audio system uses FxLMS algorithm technology to analyze and filter the ambient audio signal to obtain a noise-reduced second audio signal. It should be noted that the in-vehicle spatial audio system can also use other noise reduction algorithms to reduce the noise of the ambient audio signal, which is not limited here.
[0031] Step 102 : Filter out a first noise signal in the initial audio signal to obtain a target audio signal, where the first noise signal is a noise signal emitted by the engine of the vehicle.
[0032] The initial audio signal obtained after noise reduction still contains the engine noise signal. In this step, the engine noise signal is filtered out to obtain a target audio signal. The target audio signal includes the first audio signal and the audio signal obtained after filtering out the engine noise signal from the second audio signal.
[0033] Step 103 : performing masking effect analysis on the target audio signal as a masking sound to obtain a masking threshold for the noise signal emitted by the engine. The masking threshold represents the minimum sound intensity that can be sensed by the human ear.
[0034] Masking effects refer to the inability of subjects to fully perceive the full range of stimuli (e.g., sounds or images) due to the presence of multiple stimuli of the same type. In auditory perception, the human ear is only sensitive to the most pronounced sounds, while being less sensitive to less pronounced ones. The threshold for the human ear to detect one sound is raised by the presence of another.
[0035] In this embodiment, the target audio signal is the masking sound, and the engine noise signal is the masked sound. The masking threshold refers to the sound intensity at which the target audio signal, when used as the masking sound, can mask the engine noise signal due to the masking effect. Specifically, when the engine sound intensity is below the masking threshold, the human ear becomes insensitive to the engine sound.
[0036] Step 104: Adjust the power of the engine based on the masking threshold.
[0037] Different engine powers produce different noise signal intensities. In this step, the engine power is adjusted based on the masking threshold. This allows for adjustments to be made based on the ambient noise, thereby adjusting the engine noise intensity to a level less than or equal to the masking threshold. This adjustment method fully accounts for the combined effects of ambient and engine noise on the vehicle cabin. It also continuously adjusts the engine power based on changes in ambient noise, minimizing the impact of engine noise on occupants, thereby enhancing the noise reduction effect within the vehicle cabin.
[0038] In one embodiment of the present application, the specific implementation of step 103 may include the following steps:
[0039] A first frequency range of the target audio signal is determined, and a masking curve corresponding to the target audio signal is calculated. The masking curve represents the masking effect of using the target audio signal as a masking sound. Different masking sounds have different masking curves. The corresponding masking curve can be determined based on the frequency and sound intensity of the masking sound. The masking curve is a curve that represents the corresponding relationship between frequency and sound intensity.
[0040] A masking threshold for the noise signal emitted by the engine is determined according to the masking curve.
[0041] Specifically, the target audio signal is converted into a frequency signal, and the first frequency range is determined according to the frequency signal. When determining the masking curve, the following process may be included:
[0042] Based on the first frequency range, obtaining a first frequency in the first frequency range;
[0043] A masking curve corresponding to the target audio signal is calculated according to the first frequency and the sound intensity corresponding to the first frequency.
[0044] In the above description, the first frequency can be the dominant frequency of the first frequency range, the average frequency of the first frequency range, or the maximum frequency of the first frequency range, without limitation herein. After determining the first frequency, a masking curve corresponding to the target audio signal can be calculated based on the first frequency and the sound intensity corresponding to the first frequency. The masking curve can be calculated using existing calculation methods, without limitation herein.
[0045] Furthermore, determining a masking threshold for the noise signal emitted by the engine according to the masking curve includes:
[0046] determining a second frequency of the noise signal emitted by the engine from a second frequency range of the noise signal emitted by the engine;
[0047] Determine a masking threshold corresponding to the second frequency on the masking curve.
[0048] In the above, the second frequency range can be measured in advance. For example, the sound generated by the engine at all power or speed can be measured in advance to obtain the second frequency range. For engines of the same model, the second frequency range is the same.
[0049] The second frequency may be the main frequency of the second frequency range, the average frequency of the second frequency range, or the maximum frequency of the second frequency range, which is not limited here.
[0050] After the second frequency is determined, the sound intensity corresponding to the second frequency can be obtained from the masking curve. The sound intensity is the masking threshold.
[0051] When the sound intensity of the noise signal emitted by the engine is less than the masking threshold, the sound emitted by the engine can be masked by the target audio signal. In this way, the impact of the noise emitted by the engine can be reduced, thereby improving the noise reduction effect in the vehicle cabin.
[0052] In one embodiment of the present application, step 104, adjusting the power of the engine based on the masking threshold, includes:
[0053] Acquiring a first corresponding relationship, where the first corresponding relationship is a corresponding relationship between power and noise values pre-calibrated for the vehicle;
[0054] Obtaining a target power corresponding to the masking threshold according to the first corresponding relationship;
[0055] determining a second speed and target torque of the engine according to the target power and a pre-acquired second correspondence relationship, wherein the second correspondence relationship is a correspondence relationship between the speed, the torque, and the fuel consumption;
[0056] The speed and torque of the engine are adjusted according to the second speed and target torque.
[0057] In the above embodiment, the engine power is adjusted so that the sound intensity of the engine noise is close to or equal to the masking threshold. Of course, in other embodiments, the engine power can also be adjusted so that the sound intensity of the engine noise is slightly greater than the masking threshold, or, depending on the application scenario, the sound intensity of the engine noise is less than the masking threshold. This embodiment of the present specification is not limited to this.
[0058] In the above, the first correspondence is pre-calibrated, and the first correspondence is the correspondence between the power and noise value of the vehicle. Based on the first correspondence, the target power corresponding to the masking threshold can be obtained. The second correspondence is the correspondence between the speed, torque and fuel consumption. The power of the engine can be calculated based on the speed and torque. The second correspondence can also be called the optimal fuel consumption economy line. According to the second correspondence, the fuel consumption corresponding to different speeds and torques can be obtained. Based on this, the fuel consumption corresponding to the second speed and target torque can be obtained as the minimum fuel consumption corresponding to the target power. According to the second speed and target torque, the speed and torque of the engine are adjusted to minimize the fuel consumption when the engine works at the target power.
[0059] In one embodiment of the present application, filtering the first noise signal in the initial audio signal to obtain the target audio signal includes:
[0060] Converting the initial audio signal into a frequency signal;
[0061] Performing frequency domain order analysis on the engine using the collected CAN signal to obtain sound frequency segments corresponding to the engine at multiple orders, wherein the CAN signal and the initial audio signal are collected at the same time;
[0062] The signals corresponding to the plurality of sound frequency bands in the frequency signal are filtered out to obtain a target audio signal.
[0063] Specifically, a fast Fourier transform can be applied to the initial audio signal to convert the initial audio signal in the time domain into a frequency signal in the frequency domain. When performing frequency domain order analysis on the engine using the collected CAN signal, the following steps can be specifically included:
[0064] Obtaining a first speed of the engine from the CAN signal;
[0065] According to the first rotation speed of the engine, sound frequency segments corresponding to the engine at multiple orders are calculated.
[0066] In the above description, the first engine speed can be obtained from the CAN signal. Based on the first engine speed, the corresponding sound frequency bands of the engine at multiple orders are calculated. For example, the sound frequency bands corresponding to each of the 1st, 2nd, 4th, 6th, and 8th engine orders are calculated. The calculation method can be based on existing methods and is not limited here.
[0067] After obtaining the sound frequency segment corresponding to each order under multiple orders, the signals corresponding to the multiple sound frequency segments in the frequency signal are filtered out to filter out the frequency signal of the engine in the frequency signal to obtain the target audio signal, so as to facilitate the subsequent acquisition of the masking threshold for the noise signal emitted by the engine based on the target audio signal.
[0068] Figure 2 The figure shows a flow chart of the engine power adjustment method provided by the present application, which includes the following steps:
[0069] Install the vehicle's in-car spatial audio system;
[0070] The FxLMS algorithm is set in the in-vehicle spatial audio system to perform preliminary noise reduction on the collected initial audio signal.
[0071] Collecting the initial audio signal (i.e., original audio information) in the vehicle cabin through the microphone in the cabin;
[0072] Perform fast Fourier transform on the initial audio signal to obtain a frequency signal;
[0073] Perform frequency analysis on the frequency signal, filter out the engine noise in the frequency signal, and obtain the separated environmental noise;
[0074] Calculate the masking threshold based on the principle of human ear masking effect;
[0075] According to the relationship between the vehicle's pre-calibrated power and noise value, the target power corresponding to the masking threshold is obtained;
[0076] According to the optimal fuel consumption economy line, the fuel consumption corresponding to the second speed and torque is the minimum fuel consumption corresponding to the target power;
[0077] The second speed and torque are used to control the power of the engine.
[0078] In this application, active noise reduction technology (i.e., noise reduction of ambient audio signals) is used to lower the hearing threshold of engine noise in the cabin, which can further increase the engine's operating power, thereby optimizing the engine's operating efficiency without affecting the passengers' subjective experience;
[0079] By utilizing the principle of sound masking effect, the operating power range of the engine is further improved through masking, thus increasing the engine power and reducing fuel consumption without affecting the subjective experience of passengers on the vehicle.
[0080] The noise separation algorithm is used to achieve online NVH perception of the vehicle, realizing real-time perception of the vehicle engine status without increasing existing equipment and costs;
[0081] The use of sound sensors for intelligent identification and control of NVH enables real-time detection and adjustment of vehicle NVH, reducing the negative driver experience caused by the main noise sources of the vehicle.
[0082] like Figure 3 As shown, the embodiment of the present application further provides an engine power adjustment device 300, the device comprising:
[0083] The acquisition module 301 is used to acquire the initial audio signal in the vehicle cabin;
[0084] a first acquisition module 302 configured to filter a first noise signal from the initial audio signal to obtain a target audio signal, wherein the first noise signal is a noise signal emitted by the engine of the vehicle;
[0085] A second acquisition module 303 is configured to perform a masking effect analysis on the target audio signal as a masking sound to obtain a masking threshold for the noise signal emitted by the engine, where the masking threshold represents the minimum sound intensity that can be sensed by the human ear;
[0086] The adjustment module 304 is configured to adjust the power of the engine based on the masking threshold.
[0087] Optionally, the first acquisition module 302 includes:
[0088] a conversion submodule, configured to convert the initial audio signal into a frequency signal;
[0089] an analysis submodule, configured to perform frequency domain order analysis on the engine using the collected CAN signal to obtain sound frequency segments corresponding to the engine at multiple orders, wherein the CAN signal and the initial audio signal are collected at the same time;
[0090] The first acquisition submodule is configured to filter out signals corresponding to a plurality of the sound frequency bands in the frequency signal to obtain a target audio signal.
[0091] Optionally, the analysis submodule includes:
[0092] an acquiring unit, configured to acquire a first speed of the engine from the CAN signal;
[0093] The calculation unit is used to calculate the sound frequency segments corresponding to the engine at multiple orders according to the first speed of the engine.
[0094] Optionally, the second acquisition module includes:
[0095] a second acquisition submodule, configured to determine a first frequency range of the target audio signal, and calculate a masking curve corresponding to the target audio signal, wherein the masking curve represents a masking effect of using the target audio signal as a masking sound;
[0096] The third acquisition submodule is configured to determine a masking threshold for the noise signal emitted by the engine according to the masking curve.
[0097] Optionally, the second acquisition submodule includes:
[0098] an acquiring unit, configured to acquire a first frequency in the first frequency range based on the first frequency range;
[0099] A calculation unit is configured to calculate a masking curve corresponding to the target audio signal according to the first frequency and the sound intensity corresponding to the first frequency.
[0100] Optionally, the adjustment module 304 includes:
[0101] a fourth acquisition submodule, configured to acquire a first corresponding relationship, where the first corresponding relationship is a corresponding relationship between power and noise values pre-calibrated for the vehicle;
[0102] a fifth acquisition submodule, configured to obtain a target power corresponding to the masking threshold according to the first corresponding relationship;
[0103] a determination submodule, configured to determine a second speed and a target torque of the engine according to the target power and a pre-acquired second correspondence relationship, wherein the second correspondence relationship is a correspondence relationship between the speed, the torque, and the fuel consumption;
[0104] The adjustment submodule is configured to adjust the speed and torque of the engine according to the second speed and target torque.
[0105] Optionally, the initial audio signal includes a first audio signal emitted by a sound source in the cabin, and a second audio signal obtained by performing noise reduction processing on an ambient audio signal, wherein the sound source of the ambient audio signal is located outside the cabin.
[0106] Optionally, the initial audio signal is collected by a microphone arranged in the main driving area of the vehicle.
[0107] The engine power adjustment device 300 provided in the embodiment of the present application can achieve the above Figure 1 Each process implemented in the illustrated method embodiment can also achieve the same technical effect, and will not be described again here to avoid repetition.
[0108] like Figure 4As shown, the present application further provides an electronic device 400, the electronic device 400 including a processor 401, a memory 402 and a communication interface 403, the memory 402 storing programs or instructions that can be run on the processor 401,
[0109] The program or instruction is implemented when the processor 401 executes it Figure 1 Each process implemented in the illustrated method embodiment can also achieve the same technical effect, and will not be described again here to avoid repetition.
[0110] The present application also provides a readable storage medium on which a program or instruction is stored, which is executed by a processor to implement the following Figure 1 Steps of the engine power adjustment method in the illustrated embodiment.
[0111] The present application also provides a vehicle, which includes a vehicle-mounted system, which is implemented when the vehicle-mounted system is executed. Figure 1 Each process implemented in the illustrated method embodiment can also achieve the same technical effect, and will not be described again here to avoid repetition.
[0112] It should be understood that the above-described specific embodiments of the present invention are merely illustrative or illustrative of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included within the scope of protection of the present invention. In addition, the appended claims are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.
[0113] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.
[0114] It should also be noted that the exemplary embodiments described herein describe methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the steps described above. In other words, the steps may be performed in the order described in the embodiments, or in a different order, or several steps may be performed simultaneously.
[0115] Aspects of the present application have been described above with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine so that these instructions executed via the processor of the computer or other programmable data processing device enable the implementation of the function / action specified in one or more boxes of the flowchart and / or block diagram. This 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 box in the block diagram and / or the flowchart and the combination of the boxes in the block diagram and / or the flowchart can also be implemented by the dedicated hardware that performs the specified function or action, or can be implemented by the combination of dedicated hardware and computer instructions.
[0116] The above description is only a specific embodiment of the present invention. Those skilled in the art will 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 aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention.
Claims
1. A method for adjusting engine power, characterized in that: The method comprises: Collecting initial audio signals in the vehicle cabin; filtering a first noise signal in the initial audio signal to obtain a target audio signal, wherein the first noise signal is a noise signal emitted by an engine of the vehicle; Performing a masking effect analysis on the target audio signal as a masking sound to obtain a masking threshold for the noise signal emitted by the engine; the masking threshold represents the minimum sound intensity that can be sensed by the human ear; Based on the masking threshold, the power of the engine is adjusted.
2. The method according to claim 1, characterized in that The filtering out the first noise signal in the initial audio signal to obtain the target audio signal includes: Converting the initial audio signal into a frequency signal; Performing frequency domain order analysis on the engine through the collected CAN signal to obtain the sound frequency segments corresponding to the engine at multiple orders, wherein the CAN signal is collected at the same time as the initial audio signal; The signals corresponding to the plurality of sound frequency bands in the frequency signal are filtered out to obtain a target audio signal.
3. The method according to claim 2, characterized in that The frequency domain order analysis of the engine is performed through the collected CAN signal to obtain the sound frequency segments corresponding to the engine at multiple orders, including: Acquire a first speed of the engine from the CAN signal; According to the first rotation speed of the engine, sound frequency segments corresponding to each of the engine at multiple orders are calculated.
4. The method according to claim 1, characterized in that The step of using the target audio signal as a masking sound to perform a masking effect analysis to obtain a masking threshold for the noise signal emitted by the engine includes: Determine a first frequency range of the target audio signal, and calculate a masking curve corresponding to the target audio signal, wherein the masking curve represents a masking effect of using the target audio signal as a masking sound; A masking threshold for the noise signal emitted by the engine is determined according to the masking curve.
5. The method according to claim 4, characterized in that Determining a first frequency range of the target audio signal and calculating a masking curve corresponding to the target audio signal includes: Based on the first frequency range, obtaining a first frequency in the first frequency range; A masking curve corresponding to the target audio signal is calculated according to the first frequency and the sound intensity corresponding to the first frequency.
6. The method according to claim 4, characterized in that Determining a masking threshold for the noise signal emitted by the engine according to the masking curve includes: determining a second frequency of the noise signal emitted by the engine from a second frequency range of the noise signal emitted by the engine; A masking threshold corresponding to the second frequency on the masking curve is determined.
7. The method according to claim 1, characterized in that The adjusting the power of the engine based on the masking threshold comprises: Acquire a first corresponding relationship, where the first corresponding relationship is a corresponding relationship between power and noise value pre-calibrated for the vehicle; According to the first corresponding relationship, obtaining a target power corresponding to the masking threshold; determining a second speed and a target torque of the engine according to the target power and a pre-acquired second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between the speed, the torque and the fuel consumption; The speed and torque of the engine are adjusted according to the second speed and the target torque.
8. The method according to any one of claims 1 to 7, characterized in that The initial audio signal includes a first audio signal emitted by a sound source in the cabin and a second audio signal obtained by performing noise reduction processing on an ambient audio signal, wherein the sound source of the ambient audio signal is located outside the cabin.
9. The method according to any one of claims 1 to 7, characterized in that The initial audio signal is collected by a microphone arranged in the main driving area of the vehicle.
10. An engine power adjustment device, characterized in that: The device comprises: A collection module, used for collecting initial audio signals in the vehicle cabin; a first acquisition module, configured to filter out a first noise signal in the initial audio signal to obtain a target audio signal, wherein the first noise signal is a noise signal emitted by an engine of the vehicle; A second acquisition module is used to perform masking effect analysis on the target audio signal as a masking sound to obtain a masking threshold for the noise signal emitted by the engine, wherein the masking threshold represents the minimum sound intensity that can be sensed by the human ear; An adjustment module is used to adjust the power of the engine based on the masking threshold.
11. An electronic device, characterized in that: The device comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the engine power adjustment method according to any one of claims 1 to 9 are implemented.
12. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the engine power adjustment method according to any one of claims 1 to 9 are implemented.
13. A vehicle, characterized in that: The vehicle includes a vehicle computer system, and when the vehicle computer system is executed, the steps of the engine power adjustment method according to any one of claims 1 to 9 are implemented.