An electric vehicle sound effect simulation method, device, system and vehicle

Abstract

An electric vehicle sound effect simulation method, device, system and vehicle, comprising: obtaining vibration information, electric drive rotation speed information and vehicle condition information of the vehicle, determining an order set according to the vibration information and the electric drive rotation speed information, the order set including at least one order, each order corresponding to a sound signal, performing compensation processing on each order in the order set to obtain a compensation audio corresponding to each order, synthesizing the obtained compensation audios to obtain a target compensation audio, and playing the target compensation audio, which solves the problem that when a passenger drives an electric vehicle, the sound effect of the electric vehicle cannot reflect the electric driving force characteristics in real time.

Description

Technical Field

[0001] The present invention relates to an electrical system of an electric vehicle, and particularly to a method, device, system and vehicle for simulating the sound effect of an electric vehicle. Background Art

[0002] When an electric vehicle is in different driving conditions, there are different sounds of the motor reducer inside the vehicle. Since different electric vehicle models have different system resonance characteristics, the relationship between the electric drive sound under different operating conditions and the opening degree of the accelerator pedal and the vehicle speed is not linear. As a result, when a passenger is driving an electric vehicle, there is a lack of feedback of sound to the accelerator pedal and the vehicle speed, and the driving pleasure is lacking. In the prior art, in view of the characteristic of the small sound of the electric vehicle, by actively adding the sound of a traditional engine inside the vehicle to form the feedback of the sound to the accelerator pedal to enhance the driving experience; or by playing a pre-recorded audio file, and playing the audio corresponding to the corresponding driving condition according to different driving conditions of the vehicle, the sound obtained by this method of compensating the sound of the electric vehicle usually cannot reflect the characteristics of the electric drive sound of the electric vehicle. Summary of the Invention

[0003] The purpose of the present invention is to provide a method, device, system and vehicle for simulating the sound effect of an electric vehicle, so as to solve the problem that the existing sound effect of the electric vehicle cannot reflect the dynamic characteristics of the electric vehicle.

[0004] To solve the above technical problem, an embodiment of the present invention discloses a method for simulating the sound effect of an electric vehicle, the method comprising: acquiring vibration information, electric drive rotation speed information and vehicle condition information of the vehicle; determining an order set according to the vibration information and the electric drive rotation speed information, the order set including at least one order, and each order corresponding to a sound signal; performing compensation processing on each order in the order set to obtain a compensation audio corresponding to each order; synthesizing the obtained compensation audios to obtain a target compensation audio; playing the target compensation audio; wherein, performing compensation processing on the order includes: determining a target pitch value; determining a first sound signal from the sound signal corresponding to the order according to the target pitch value; determining a second sound signal from the first sound signal according to the sound pressure value of each order, the second sound signal being the sound signal that needs to be compensated; compensating the second sound signal according to the vehicle condition information to obtain a compensation audio corresponding to the order.

[0005] Further, the determining an order set according to the vibration information and the electric drive rotation speed information includes: determining a vibration frequency domain signal according to the vibration information, and determining an electric drive rotation speed signal according to the electric drive rotation speed information; determining a target order set according to the vibration frequency domain signal and the electric drive rotation speed signal.

[0006] Further, the determination of the target pitch value includes: obtaining a preset pitch value; obtaining the target pitch value based on the pitch value corresponding to the order and the preset pitch value.

[0007] Further, the obtaining of the preset pitch value includes: determining a reference pitch value according to the pitch value of the in-vehicle background noise; using the reference pitch value as the preset pitch value.

[0008] Further, the obtaining of the target pitch value based on the pitch value corresponding to the order and the preset pitch value includes: obtaining a first evaluation pitch value; determining a second evaluation pitch value according to the first evaluation pitch value and the preset pitch value; determining the pitch values whose pitch values corresponding to the order are less than the second evaluation pitch value as the target pitch value.

[0009] Further, the determination of the first sound signal from the sound signals corresponding to the order according to the target pitch value includes: determining the sound signal corresponding to the target pitch value; using the sound signal corresponding to the target pitch value as the first sound signal.

[0010] Further, the determination of the second sound signal from the first sound signal according to the sound pressure values of each order includes: extracting the characteristics of the sound pressure values of each order in the first sound signal; determining the second sound signal according to the characteristics of the sound pressure values of each order.

[0011] Further, the vehicle condition information includes the accelerator pedal opening, the brake pedal opening or the motor torque information.

[0012] Further, the compensation of the second sound signal according to the vehicle condition information includes: determining a compensation coefficient according to the accelerator pedal opening, the brake pedal opening or the motor torque information; compensating the second sound signal according to the compensation coefficient.

[0013] Further, before the step of synthesizing the obtained compensated audios to obtain the target compensated audio, it further includes: determining an order compensation signal related to the rotational speed corresponding to the order, where the order compensation signal related to the rotational speed corresponding to the order is determined according to the electric drive rotational speed signal; determining the compensated audio corresponding to the order according to the order compensation signal related to the rotational speed.

[0014] Further, after the step of playing the target compensated audio, it further includes: collecting the in-vehicle sound; adjusting the target compensated audio according to the in-vehicle sound.

[0015] Further, adjusting the target compensation audio according to the in-vehicle sound includes: obtaining the in-vehicle sound characteristics; obtaining the sound data analysis result according to the in-vehicle sound characteristics; and adjusting the target compensation audio according to the sound data analysis result.

[0016] An embodiment of the present invention further provides an electric vehicle sound effect simulation device, including a signal acquisition module, an identification and analysis module, a compensation sound processing module, a compensation sound generation module, and a compensation implementation module. The signal acquisition module is configured to acquire vibration information, electric drive rotation speed information, and vehicle condition information of the vehicle; the identification and analysis module is configured to determine an order set according to the vibration information and the electric drive rotation speed information, the order set includes at least one order, and each order corresponds to a sound signal; the compensation sound processing module is configured to perform compensation processing on each order in the order set to obtain a compensation audio corresponding to each order; wherein, performing compensation processing on the order includes: determining a target pitch value; determining a first sound signal from the sound signal corresponding to the order according to the target pitch value; determining a second sound signal from the first sound signal according to the sound pressure value of each order, the second sound signal is the sound signal that needs to be compensated; performing sound compensation on the second sound signal according to the vehicle condition information to obtain a compensation audio corresponding to the order; the compensation sound generation module is configured to synthesize the obtained compensation audios to obtain a target compensation audio; the compensation implementation module is configured to play the target compensation audio.

[0017] Further, the compensation sound processing module further includes a target definition module and a compensation calculation module. The target definition module is configured to determine a target pitch value; the compensation calculation module is configured to determine a first sound signal from the sound signal corresponding to the order according to the target pitch value; determine a second sound signal from the first sound signal according to the sound pressure value of each order, the second sound signal is the sound signal that needs to be compensated; perform sound compensation on the second sound signal according to the vehicle condition information to obtain a compensation audio corresponding to the order.

[0018] An embodiment of the present invention further provides an electric vehicle sound effect simulation system, including an audio acquisition device, an audio playback device, and an electric vehicle sound effect simulation device according to any one of the above claims. The electric vehicle sound effect simulation device is respectively connected to the audio acquisition device and the audio playback device.

[0019] An embodiment of the present invention further provides a vehicle, and the vehicle is configured with the above-mentioned electric vehicle sound effect simulation system.

[0020] Implementing the present invention has the following beneficial effects:

[0021] The present invention determines an order set according to vibration information and the electric drive rotation speed information, and the order set is related to the setting of the electric drive. Thus, the order set obtained according to the vibration information and the electric drive rotation speed information is an order set that can reflect the sound characteristics of the electric drive of the electric vehicle. The present invention performs compensation processing on each order in the order set to obtain a compensation audio corresponding to each order; and screens the sound signal by setting a target pitch value to obtain a first sound signal that meets the screening conditions. Furthermore, a second sound signal to be compensated is obtained from the first sound signal according to the sound pressure value. Through the setting of the target pitch value and the screening according to the sound pressure value, it is ensured that the signal that needs to be sound-compensated is set according to the characteristics of the electric drive sound of the electric vehicle; by synthesizing the obtained compensation audios, a target compensation audio is obtained; by playing the target compensation audio, a sound effect that reflects the sound characteristics of the electric drive of the electric vehicle is obtained, improving the driving experience of the driver and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0023] Figure 1 It is a schematic flowchart of a method for simulating the sound effect of an electric vehicle provided by an embodiment of the present invention.

[0024] Figure 2 It is a schematic flowchart of determining an order set according to vibration information and electric drive rotation speed information provided by an embodiment of the present invention.

[0025] Figure 3 It is a schematic flowchart of determining a target pitch value provided by an embodiment of the present invention.

[0026] Figure 4 It is a schematic flowchart of obtaining a preset pitch value provided by an embodiment of the present invention.

[0027] Figure 5 It is a schematic flowchart of obtaining a target pitch value according to the pitch value corresponding to the order and the preset pitch value provided by an embodiment of the present invention.

[0028] Figure 6 It is a schematic flowchart of determining a first sound signal from the sound signals corresponding to the orders according to the target pitch value provided by an embodiment of the present invention.

[0029] Figure 7 It is a schematic flowchart of determining a second sound signal from the first sound signal according to the sound pressure value of each order provided by an embodiment of the present invention.

[0030] Figure 8 It is a schematic flow chart for compensating the second sound signal according to vehicle condition information provided by an embodiment of the present invention.

[0031] Figure 9 It is a schematic flow chart for determining a compensation audio corresponding to an order provided by an embodiment of the present invention.

[0032] Figure 10 It is a schematic flow chart for adjusting a target compensation audio according to in-vehicle sound provided by an embodiment of the present invention.

[0033] Figure 11 It is a schematic structural diagram of an electric vehicle sound effect simulation device provided by an embodiment of the present invention.

[0034] Figure 12 It is a schematic structural diagram of a compensation sound processing module provided by an embodiment of the present invention.

[0035] Figure 13 It is a schematic structural diagram of an electric vehicle sound effect simulation system provided by an embodiment of the present invention.

[0036] Among them, the reference numerals in the figure correspond to: 600 - electric vehicle sound effect simulation device, 610 - signal acquisition module, 620 - identification and analysis module, 630 - compensation sound processing module, 631 - target definition module, 632 - compensation calculation module, 640 - compensation sound generation module, 650 - compensation implementation module, 700 - electric vehicle sound effect simulation system, 710 - audio acquisition device, 720 - audio playback device. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] In the following description, for the sake of clarity and conciseness, not all the multiple components shown in the figures are described. The figures show multiple components to provide a complete disclosure of the present invention that can be fully implemented by those of ordinary skill in the art. For those skilled in the art, the operations of many components are familiar and obvious.

[0039] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0040] The electric vehicle sound simulation method provided in this embodiment is used to simulate the sound of an electric vehicle under different driving conditions, such as Figure 1 as shown, the method includes the following steps.

[0041] Step 100: Obtain the vibration information, electric drive speed information, and vehicle condition information of the vehicle.

[0042] In this step, the vibration information of the vehicle is one or several of the vibration information of the motor, the motor drive system, or the housing of the motor drive system. The vibration information of the vehicle is the vibration information reflecting the vibration characteristics of the motor drive system itself. The acquisition of the vibration information of the vehicle can obtain the vibration information of different motor drive system components that can reflect the vibration characteristics of the motor drive system itself according to the configuration of the motor drive system of different electric vehicles. The electric drive speed information may be the speed information of the motor, the speed information of the wheels, or the speed information of the transmission device provided between the motor and the wheels. The vehicle condition information includes one or several of the opening and closing information of the accelerator pedal, the opening and closing information of the brake pedal, or the motor torque information. The driving information of the vehicle is used to reflect the working condition of the vehicle, and the driving information of the vehicle also includes other information that can reflect the working condition of the vehicle, which is not limited in the present invention.

[0043] Step 200: Determine an order set according to the vibration information and the electric drive speed information. The order set includes at least one order, and each order corresponds to a sound signal.

[0044] In this step, compare the vibration information and the electric drive speed information to obtain the orders that can reflect the vibration characteristics of the motor drive system, and determine the order set based on the orders that can reflect the vibration characteristics of the motor drive system.

[0045] Step 300: Perform compensation processing on each order in the order set to obtain a compensated audio corresponding to each order. Among them, performing compensation processing on the order includes:

[0046] Determine the target pitch value;

[0047] Determine the first sound signal from the sound signal corresponding to the order according to the target pitch value;

[0048] Determine a second sound signal from the first sound signal according to the sound pressure values of each order, where the second sound signal is the sound signal that needs to be compensated;

[0049] Compensate the second sound signal according to the vehicle condition information to obtain a compensated audio corresponding to the order.

[0050] In this step, the sound signal is screened by setting a target pitch value to obtain a first sound signal that meets the screening conditions. Then, a second sound signal that needs to be compensated is obtained from the first sound signal according to the sound pressure value. By setting the target pitch value and screening according to the sound pressure value, it is ensured that the signal that needs to be sound-compensated is determined according to the characteristics of the electric vehicle's electric drive sound. Furthermore, it is ensured that the obtained compensated audio can reflect the sound characteristics of the electric vehicle.

[0051] Step 400: Synthesize the obtained compensated audios to obtain a target compensated audio.

[0052] Step 500: Play the target compensated audio.

[0053] In this step, play the target compensated audio, and the target compensated audio is superimposed on the existing electric drive sound to achieve the continuity of the electric vehicle's electric drive sound and ensure the quality of the electric vehicle's electric drive sound.

[0054] The present invention determines an order set according to the vibration information and the electric drive speed information. The order set is related to the settings of the electric vehicle motor drive system. Therefore, the order set obtained according to the vibration information and the electric drive speed information is an order set that can reflect the sound characteristics of the electric vehicle's electric drive. The present invention ensures that the signal that needs to be sound-compensated is set according to the characteristics of the electric vehicle's electric drive sound through the setting of the target pitch value and screening according to the sound pressure value; synthesizes the obtained compensated audios to obtain a target compensated audio; and obtains a sound effect that reflects the sound characteristics of the electric vehicle's electric drive by playing the target compensated audio, improving the driving experience of the driver and passengers.

[0055] In an embodiment of the present invention, in the step of determining the order set according to the vibration information and the electric drive speed information, as Figure 2 shown, the following steps are further included:

[0056] Step 201: Determine a vibration frequency domain signal according to the vibration information and determine an electric drive speed signal according to the electric drive speed information.

[0057] Step 202: Determine a target order set according to the vibration frequency domain signal and the electric drive speed signal.

[0058] In an embodiment of the present invention, in the step of determining the target pitch value, as Figure 3As shown in the figure, it further includes the following steps:

[0059] Step 311: Obtain a preset tone value.

[0060] In this step, the preset tone value can be determined according to the tone value of the ambient noise.

[0061] Step 312: Obtain a target tone value based on the tone value corresponding to the order and the preset tone value.

[0062] In this step, based on the reference standard of the preset tone value, the tone value corresponding to the order that is higher than the preset tone value and meets the predetermined conditions is determined as the target tone value.

[0063] In an embodiment of the present invention, in the step of obtaining the preset tone value, as Figure 4 shown in the figure, it further includes the following steps:

[0064] Step 3111: Determine a reference tone value according to the tone value of the in-vehicle background noise.

[0065] In this step, by collecting the in-vehicle background noise, the tone value of the in-vehicle background noise is obtained.

[0066] Step 3112: Use the reference tone value as the preset tone value.

[0067] In this step, the tone value of the in-vehicle background noise is directly used as the preset tone value, and based on this tone value, subsequent processing is performed on the tone value corresponding to the order. The preset tone value is continuously adjusted according to the dynamic magnitude of the in-vehicle background noise. Furthermore, the calculation of the target tone value can more accurately reflect the prominence of the tone, making the subsequent simulation of the electric vehicle sound effect more in line with the human ear's perception of tone sounds.

[0068] In an embodiment of the present invention, in the step of obtaining the target tone value based on the tone value corresponding to the order and the preset tone value, as Figure 5 shown in the figure, it further includes the following steps:

[0069] Step 3121: Obtain a first evaluation tone value.

[0070] In this step, the first evaluation tone value can be determined according to the preset sound effects of different vehicle models, can also be determined by the method of objective spectrum analysis and subjective audition, and can also be set according to different sound field environments.

[0071] Step 3122: Determine a second evaluation tone value according to the first evaluation tone value and the preset tone value.

[0072] In this step, the first evaluation tone value and the preset tone value are added together to obtain a second evaluation tone value. Alternatively, different weighting values are respectively set for the first evaluation tone value and the preset tone value and then added together to control the proportion of the first evaluation tone value and the preset tone value in the second evaluation tone value, thereby adjusting the influence of the first evaluation tone value and the preset tone value on the determination of the target tone value. The second evaluation tone value is a tone value that can determine the existence of a howling sound in the vehicle under the reference background of the preset tone value, and the setting of the second evaluation tone value enables the adjustment of the howling sound in the vehicle with reference to the second evaluation tone value to obtain a good sound effect simulation effect for the electric vehicle.

[0073] Step 3123: Determine the tone value corresponding to the order that is less than the second evaluation tone value as the target tone value.

[0074] In this step, the tone value that is less than the second evaluation tone value is determined as the target tone value, and subsequent processing is performed on the tone value corresponding to the order that is less than the second evaluation tone value. Among them, the sound signal corresponding to the tone value that is less than the second evaluation tone value corresponds to the in-vehicle howling sound that does not meet the conditions in the vehicle. The electric vehicle sound effect simulation method of the present invention adjusts the above-mentioned in-vehicle howling sound that does not meet the conditions to obtain a good sound effect simulation effect for the electric vehicle and improve the driving experience of the passengers.

[0075] In an embodiment of the present invention, in the step of determining the first sound signal from the sound signals corresponding to the orders according to the target tone value, as Figure 6 shown, the following steps are further included:

[0076] Step 321: Determine the sound signal corresponding to the target tone value.

[0077] Step 322: Determine the sound signal corresponding to the target tone value as the first sound signal.

[0078] In this step, the sound signal corresponding to the target tone value is determined as the first sound signal to process the first sound signal.

[0079] In an embodiment of the present invention, in the step of determining the second sound signal from the first sound signal according to the sound pressure values of each order, as Figure 7 shown, the following steps are further included:

[0080] Step 331: Extract the characteristics of the sound pressure values of each order in the first sound signal.

[0081] Step 332: Determine the second sound signal according to the characteristics of the sound pressure values of each order.

[0082] In this step, the first sound signal whose sound pressure value characteristics at each order meet certain conditions is determined as the second sound signal. Specifically, it can be determined by judging whether the difference between the first sound signal and the preset tone value meets the preset conditions. The preset conditions may include the following situations: For example, when the difference between the first sound signal and the preset tone value is discontinuous, it will cause the human ear's perception of the interior howling sound represented by the difference between the first sound signal and the preset tone value not to match the operating state of the electric vehicle. Then, the first sound signal that meets this condition is determined as the second sound signal. Or, for example, when the difference between the first sound signal and the preset tone value cannot change linearly with the vehicle condition information, thereby affecting the human ear's perception of the interior howling sound represented by the difference between the first sound signal and the preset tone value. In this case, the human ear's perception of the interior howling sound cannot change with the change of the vehicle condition information, which affects the driving experience. Then, the first sound signal that meets this condition is determined as the second sound signal. Or, according to different automotive product positions, the first sound signals corresponding to each order that can generate the preset interior active sound wave are determined as the second sound signal. At this time, the determination of the second sound signal ultimately depends on the automotive product position and subjective evaluation.

[0083] In an embodiment of the present invention, the vehicle condition information includes the accelerator pedal opening, the brake pedal opening, or the motor torque information. The vehicle condition information is used to real-time feedback the driving intention of the driver and passengers.

[0084] In an embodiment of the present invention, in the step of compensating the second sound signal according to the vehicle condition information, as Figure 8 shown, it further includes the following steps:

[0085] Step 341: Determine the compensation coefficient according to the accelerator pedal opening, the brake pedal opening, or the motor torque information.

[0086] In this step, specifically, the compensation coefficient can be determined according to one or several of the accelerator pedal opening, the brake pedal opening, or the motor torque information.

[0087] Step 342: Compensate the second sound signal according to the compensation coefficient.

[0088] In this step, when compensating the second sound signal according to the compensation coefficient, specifically, the initial amount that the second sound signal needs to be compensated can be determined first. After obtaining the initial amount, it is multiplied by the compensation coefficient to obtain the compensation amount corresponding to the second sound signal. By playing the compensated audio inside or outside the vehicle, in the interior and exterior environments of the vehicle, the human ear can obtain a pre-judgment of the vehicle condition based on the superimposed sound effect of the target compensated audio and the audio of the electric vehicle itself, improving the driving experience of the passengers inside the vehicle, facilitating the pedestrians outside the vehicle to react to the driving trend of the electric vehicle, and reducing the occurrence of accidents.

[0089] In an embodiment of the present invention, before the step of synthesizing each obtained compensated audio to obtain a target compensated audio, as Figure 9 shown, the following steps are further included:

[0090] Step 351: Determine the order-related order compensation signal corresponding to the order, where the order-related order compensation signal corresponding to the order is determined according to the electric drive speed signal.

[0091] In this step, the order-related order compensation signal realizes increasing the heaviness of the electric drive sound, reducing the order sharpness, and improving the quality of the electric drive sound of the electric vehicle.

[0092] Step 352: Determine the compensated audio corresponding to the order according to the order-related order compensation signal.

[0093] Among them, the compensated audio is determined according to the characteristics of the sound pressure values of each order of the second sound signal. Specifically, for example, when the difference between the second sound signal and the preset tone value is discontinuous, it will cause the human ear's perception of the in-vehicle whistling sound characterized by the difference between the second sound signal and the preset tone value not to match the running state of the electric vehicle. Then, after compensating the compensated audio determined according to the second sound signal, it can make the human ear's perception of the in-vehicle whistling sound characterized by the difference between the second sound signal and the preset tone value match the running state of the electric vehicle; or for example, when the difference between the second sound signal and the preset tone value cannot linearly change with the change of the vehicle condition information, thereby affecting the human ear's perception of the in-vehicle whistling sound characterized by the difference between the first sound signal and the preset tone value, this situation makes the human ear's perception of the in-vehicle whistling sound not change with the change of the vehicle condition information, affecting the driving experience. Then, after compensating the compensated audio determined according to the second sound signal, it can make the human ear's perception of the in-vehicle whistling sound change with the change of the vehicle condition information, thereby improving the driving experience; or according to different automotive product positions, design the active sound wave inside the vehicle, so that after compensating the compensated audio determined according to the second sound signal, it can meet the requirements of the active sound wave inside the vehicle. For example, if the vehicle needs a dynamic sound, it is necessary to actively compensate the low and medium order active sound waves that change with the vibration amplitude and torque to determine the compensated audio. If the vehicle needs a sci-fi sound, it is necessary to actively compensate the medium and high order active sound waves that change with the vibration amplitude and torque to determine the compensated audio.

[0094] In an embodiment of the present invention, after the step of playing the target compensated audio, as Figure 10 shown, the following steps are further included:

[0095] Step 361: Collect the in-vehicle sound.

[0096] In this step, the in-vehicle sound after playing the target compensation audio is collected to adjust the in-vehicle sound after playing the target compensation audio.

[0097] Step 362: Obtain the in-vehicle sound characteristics;

[0098] Step 363: Obtain the sound data analysis result according to the in-vehicle sound characteristics;

[0099] Step 364: Adjust the target compensation audio according to the sound data analysis result.

[0100] In this step, according to the in-vehicle sound after playing the target compensation audio, sound data analysis is performed, and according to the result of the sound data analysis, the target compensation audio is appropriately adjusted to obtain a better electric vehicle sound effect simulation.

[0101] An embodiment of the present invention also discloses an electric vehicle sound effect simulation device 600, as Figure 11 shown, including a signal acquisition module 610, an identification and analysis module 620, a compensation sound processing module 630, a compensation sound generation module 640, and a compensation implementation module 650.

[0102] The signal acquisition module 610 is used to acquire the vibration information, electric drive speed information, and vehicle condition information of the vehicle; the identification and analysis module 620 is used to determine an order set according to the vibration information and the electric drive speed information, the order set includes at least one order, and each order corresponds to a sound signal; the compensation sound processing module 630 is used to perform compensation processing on each order in the order set to obtain a compensation audio corresponding to each order; wherein, performing compensation processing on the order includes: determining a target pitch value; determining a first sound signal from the sound signal corresponding to the order according to the target pitch value; determining a second sound signal from the first sound signal according to the sound pressure value of each order, the second sound signal is the sound signal that needs to be compensated; performing sound compensation on the second sound signal according to the vehicle condition information to obtain a compensation audio corresponding to the order; the compensation sound generation module 640 is used to synthesize the obtained compensation audios to obtain a target compensation audio; the compensation implementation module 650 is used to play the target compensation audio.

[0103] In an embodiment of the present invention, as Figure 11As shown in the figure, the compensation sound processing module 630 further includes a target definition module 631 and a compensation calculation module 632. The target definition module 631 is used to determine a target pitch value; the compensation calculation module 632 is used to determine a first sound signal from the sound signals corresponding to the orders according to the target pitch value; determine a second sound signal from the first sound signal according to the sound pressure values of each order, and the second sound signal is the sound signal that needs to be compensated; perform sound compensation on the second sound signal according to the vehicle condition information to obtain a compensation audio corresponding to the order.

[0104] An embodiment of the present invention also discloses an electric vehicle sound effect simulation system 700, as Figure 12 shown, including an audio acquisition device 710, an audio playback device 720, and the electric vehicle sound effect simulation device 600 described in any one of the above. The electric vehicle sound effect simulation device 600 is respectively connected to the audio acquisition device 710 and the audio playback device 720.

[0105] An embodiment of the present invention also discloses a vehicle configured with the above-mentioned electric vehicle sound effect simulation system 700. The audio acquisition device 710 includes a microphone, and one or more microphones can be provided, which are based on the ability to accurately collect the sound inside the vehicle. The audio playback device 720 includes an audio device, and the audio device can be a vehicle multimedia device or a playback device independent of the vehicle multimedia. The signal acquisition module 610 includes a vibration sensor, and the vibration sensor is used to acquire the vibration information of the vehicle. The frequency of the vibration signal collected by the vibration sensor is 10 Hz - 5000 Hz, and the vibration signal has robustness and is less affected by the environment and the usage time. The installation position of the vibration sensor can be the housing position of the front and rear electric drives or the suspension side position to ensure convenient installation and stable collection of vibration signals.

[0106] The above-disclosed are only several preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An electric vehicle sound effect simulation method, characterized in that, the method includes: acquiring vibration information, electric drive speed information and vehicle condition information of the vehicle; determining an order set according to the vibration information and the electric drive speed information, the order set includes at least one order, and each order corresponds to a sound signal; performing compensation processing on each order in the order set to obtain a compensation audio corresponding to each order; synthesizing the obtained compensation audios to obtain a target compensation audio; playing the target compensation audio; wherein, performing compensation processing on the order includes: determining a target pitch value; determining a first sound signal from the sound signal corresponding to the order according to the target pitch value; determining a second sound signal from the first sound signal according to the sound pressure value of each order, the second sound signal is the sound signal that needs to be compensated; compensating the second sound signal according to the vehicle condition information to obtain a compensation audio corresponding to the order.

2. The electric vehicle sound effect simulation method according to claim 1, characterized in that, the determining the order set according to the vibration information and the electric drive speed information includes: determining a vibration frequency domain signal according to the vibration information, and determining an electric drive speed signal according to the electric drive speed information; determining a target order set according to the vibration frequency domain signal and the electric drive speed signal.

3. The electric vehicle sound effect simulation method according to claim 1, characterized in that, the determining the target pitch value includes: acquiring a preset pitch value; obtaining a target pitch value according to the pitch value corresponding to the order and the preset pitch value.

4. The electric vehicle sound effect simulation method according to claim 3, characterized in that, the acquiring the preset pitch value includes: determining a reference pitch value according to the pitch value of the in-vehicle background noise; using the reference pitch value as the preset pitch value.

5. The electric vehicle sound effect simulation method according to claim 3, characterized in that, the obtaining the target pitch value according to the pitch value corresponding to the order and the preset pitch value includes: acquiring a first evaluation pitch value; determining a second evaluation pitch value according to the first evaluation pitch value and the preset pitch value; determining the pitch value whose pitch value corresponding to the order is less than the second evaluation pitch value as the target pitch value.

6. The electric vehicle sound effect simulation method according to claim 1, characterized in that, the determining the first sound signal from the sound signal corresponding to the order according to the target pitch value includes: determining the sound signal corresponding to the target pitch value; using the sound signal corresponding to the target pitch value as the first sound signal.

7. The electric vehicle sound effect simulation method according to claim 1, characterized in that, the determining the second sound signal from the first sound signal according to the sound pressure value of each order includes: extracting the characteristics of the sound pressure value of each order in the first sound signal; determining the second sound signal according to the characteristics of the sound pressure value of each order.

8. The electric vehicle sound effect simulation method according to claim 1, characterized in that, the vehicle condition information includes the accelerator pedal opening, the brake pedal opening or the motor torque information.

9. The electric vehicle sound effect simulation method according to claim 8, characterized in that, the compensating the second sound signal according to the vehicle condition information includes: determining a compensation coefficient according to the accelerator pedal opening, the brake pedal opening or the motor torque information; compensating the second sound signal according to the compensation coefficient.

10. The electric vehicle sound effect simulation method according to claim 1, characterized in that, before the step of synthesizing the obtained compensated audios to obtain a target compensated audio, further comprising: determining a rotational speed-related order compensation signal corresponding to the order, wherein the rotational speed-related order compensation signal corresponding to the order is determined according to the electric drive rotational speed signal; determining the compensated audio corresponding to the order according to the rotational speed-related order compensation signal.

11. The electric vehicle sound effect simulation method according to claim 1, characterized in that, after the step of playing the target compensated audio, further comprising: collecting the in-vehicle sound; adjusting the target compensated audio according to the in-vehicle sound.

12. The electric vehicle sound effect simulation method according to claim 11, characterized in that, the adjusting the target compensated audio according to the in-vehicle sound includes: acquiring the in-vehicle sound characteristics; obtaining a sound data analysis result according to the in-vehicle sound characteristics; adjusting the target compensated audio according to the sound data analysis result.

13. An electric vehicle sound effect simulation device, characterized in that, comprising a signal acquisition module (610), an identification and analysis module (620), a compensated sound processing module (630), a compensated sound generation module (640) and a compensation implementation module (650), the signal acquisition module (610) is configured to acquire the vibration information, the electric drive rotational speed information and the vehicle condition information of the vehicle; the identification and analysis module (620) is configured to determine an order set according to the vibration information and the electric drive rotational speed information, the order set includes at least one order, and each order corresponds to a sound signal; the compensated sound processing module (630) is configured to perform compensation processing on each order in the order set to obtain a compensated audio corresponding to each order; wherein, performing compensation processing on the order includes: determining a target pitch value; determining a first sound signal from the sound signal corresponding to the order according to the target pitch value; determining a second sound signal from the first sound signal according to the sound pressure value of each order, the second sound signal being the sound signal to be compensated; compensating the second sound signal according to the vehicle condition information to obtain a compensated audio corresponding to the order; the compensated sound generation module (640) is configured to synthesize the obtained compensated audios to obtain a target compensated audio; the compensation implementation module (650) is configured to play the target compensated audio.

14. The electric vehicle sound effect simulation device according to claim 13, characterized in that, the compensated sound processing module (630) further includes a target definition module (631) and a compensation calculation module (632), the target definition module (631) is configured to determine a target pitch value; The compensation calculation module (632) is configured to determine a first sound signal from the sound signals corresponding to the orders according to the target tone value; and determine a second sound signal from the first sound signal according to the sound pressure values of the respective orders, where the second sound signal is the sound signal that needs to be compensated. Perform sound compensation on the second sound signal according to the vehicle condition information to obtain a compensation audio corresponding to the order.

15. An electric vehicle sound effect simulation system Characterized in that It includes an audio acquisition device (710), an audio playback device (720), and the electric vehicle sound effect simulation device (600) according to any one of claims 13 to 14. The electric vehicle sound effect simulation device (600) is respectively connected to the audio acquisition device (710) and the audio playback device (720).

16. A vehicle Characterized in that The vehicle is configured with the electric vehicle sound effect simulation system according to claim 15.

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