Adaptive adjustment method and device of sound field center, equipment and storage medium

Abstract

The application discloses a sound field center adaptive adjustment method, device, equipment and storage medium, the sound field center adaptive adjustment method comprises: obtaining vehicle state information; wherein the vehicle state information at least includes vehicle acceleration, vehicle deceleration, vehicle driving direction angle, steering wheel steering angle and vehicle speed; the vehicle state information is analyzed, and vehicle driving posture is obtained; wherein the vehicle driving posture includes at least one of straight acceleration, straight deceleration, left turning and right turning;According to the actual vehicle speed under the vehicle driving posture, the target position of the sound field center in the vehicle space is determined, so that the sound field center is adjusted from the current position to the target position.The above scheme can change the sound field center in the vehicle space with the actual vehicle speed under the vehicle driving posture, and realize the dynamic adjustment of the sound field center in the vehicle space.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile cabin sound field technology, and in particular to a sound field center adaptive adjustment method and device, equipment and a storage medium. BACKGROUND

[0002] With the upgrading of automobile consumption, vehicles equipped with more loudspeakers and audio amplifiers are gradually favored by users, and cabin personnel can enjoy a rich immersive sound space in the vehicle environment.

[0003] Currently, the sound field center in the vehicle cabin is adjusted by adjusting the fader and balance volume keys set in the vehicle cabin, thereby enjoying a rich immersive sound space, wherein fader refers to the longitudinal volume adjustment function in the vehicle, that is, the sound field in the front and rear directions of the vehicle, and balance refers to the lateral volume adjustment function in the vehicle, that is, the sound field in the left and right directions of the vehicle. The cabin personnel can adjust the above two items respectively so that the sound field center can move to the main driver, the co-driver and the rear seat position. However, this method is fixed adjustment and cannot be dynamically adjusted when the vehicle is accelerating, decelerating, turning left, turning right and the like. SUMMARY

[0004] The present application provides at least a sound field center adaptive adjustment method, device, equipment and computer readable storage medium.

[0005] The first aspect of the present application provides a sound field center adaptive adjustment method, comprising: obtaining vehicle state information; wherein the vehicle state information at least includes vehicle acceleration, vehicle deceleration, vehicle driving direction angle, steering wheel steering angle, steering wheel steering angle and vehicle speed; analyzing the vehicle state information to obtain the vehicle driving posture; wherein the vehicle driving posture includes at least one of straight line acceleration, straight line deceleration, left turn, right turn; determining the target position of the sound field center in the vehicle space according to the actual vehicle speed under the vehicle driving posture, so as to adjust the sound field center from the current position to the target position; wherein the stereo sound change trend formed by the current position and the target position is opposite to the vehicle driving direction corresponding to the vehicle driving posture.

[0006] In an embodiment, if the vehicle driving posture is one of the straight line acceleration, the left turn and the right turn, the stereo sound change trend formed by the current position and the target position is opposite to the vehicle driving direction corresponding to the vehicle driving posture.

[0007] In an embodiment, if the vehicle driving posture is the straight line deceleration, the stereo sound change trend formed by the current position and the target position is the same as the vehicle driving direction corresponding to the vehicle driving posture.

[0008] In an embodiment, the vehicle driving posture is straight-line acceleration, and the step of determining the target position of the sound field center in the vehicle space according to the actual vehicle speed in the vehicle driving posture comprises: if the actual vehicle speed in the straight-line acceleration is greater than a first vehicle speed threshold and less than a second vehicle speed threshold, obtaining a starting vehicle speed corresponding to a starting time of the vehicle and a wheelbase of the vehicle, the first vehicle speed threshold being less than the second vehicle speed threshold; and determining the target position of the sound field center in the vehicle space according to the starting vehicle speed, the actual vehicle speed and the wheelbase of the vehicle.

[0009] In an embodiment, the step of determining the target position of the sound field center in the vehicle space according to the starting vehicle speed, the actual vehicle speed and the wheelbase of the vehicle comprises: calculating a first ratio between a vehicle speed difference between the actual vehicle speed and the starting vehicle speed and a current time corresponding to the actual vehicle speed, and calculating a second ratio between the first ratio and a numerical threshold; calculating a third ratio between the wheelbase of the vehicle and a wheelbase threshold; and taking an inverse of a product between the second ratio and the third ratio as the target position of the sound field center in the vehicle space.

[0010] In an embodiment, the vehicle driving posture is straight-line acceleration, and the step of determining the target position of the sound field center in the vehicle space according to the actual vehicle speed in the vehicle driving posture comprises: if the actual vehicle speed in the straight-line acceleration is greater than or equal to the second vehicle speed threshold, obtaining a next vehicle speed corresponding to a next time, the next time including a time later than a current time corresponding to the actual vehicle speed; if the next vehicle speed is greater than the actual vehicle speed, obtaining the wheelbase of the vehicle; and determining the target position of the sound field center in the vehicle space according to the wheelbase of the vehicle.

[0011] In an embodiment, the step of determining the target position of the sound field center in the vehicle space according to the wheelbase of the vehicle comprises: calculating a fourth ratio between the wheelbase of the vehicle and a wheelbase threshold; and taking an inverse of the fourth ratio as the target position of the sound field center in the vehicle space.

[0012] In an embodiment, the vehicle driving posture is straight-line acceleration, and the step of determining the target position of the sound field center in the vehicle space according to the actual vehicle speed in the vehicle driving posture comprises: if the actual vehicle speed in the straight-line acceleration is equal to the first vehicle speed threshold, determining the first vehicle speed threshold as the target position of the sound field center in the vehicle space.

[0013] In an embodiment, the step of analyzing the vehicle state information to obtain a vehicle driving posture comprises: obtaining a starting vehicle speed and an actual vehicle speed included in the vehicle state information; and if the actual vehicle speed is greater than the starting vehicle speed and an acceleration of the vehicle is greater than zero, determining that the vehicle driving posture is straight-line acceleration.

[0014] The second aspect of the present application provides an adaptive adjustment device for a sound field center, comprising: an acquisition module configured to acquire vehicle state information; wherein the vehicle state information at least includes vehicle acceleration, vehicle deceleration, vehicle driving direction angle, steering wheel steering angle and vehicle speed; an analysis module configured to analyze the vehicle state information to obtain a vehicle driving posture; wherein the vehicle driving posture includes at least one of straight acceleration, straight deceleration, left turning and right turning; and an adjustment module configured to determine a target position of the sound field center in the vehicle space according to an actual vehicle speed under the vehicle driving posture, so as to adjust the sound field center from a current position to the target position.

[0015] The third aspect of the present application provides an electronic device, comprising a memory and a processor, the processor being configured to execute program instructions stored in the memory to implement the above-mentioned adaptive adjustment method for a sound field center.

[0016] The fourth aspect of the present application provides a computer-readable storage medium having program instructions stored thereon, the program instructions being executed by a processor to implement the above-mentioned adaptive adjustment method for a sound field center.

[0017] The above-mentioned scheme determines the target position of the sound field center in the vehicle space according to the actual vehicle speed under the vehicle driving posture obtained by analyzing the vehicle state information, so as to adjust the sound field center from the current position to the target position, thereby enabling the sound field center in the vehicle space to change with the actual vehicle speed under the vehicle driving posture, and realizing dynamic adjustment of the sound field center in the vehicle space.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, but not limiting the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the technical solutions of the present application.

[0020] Figure 1 is a flowchart of an exemplary embodiment of the adaptive adjustment method for a sound field center of the present application;

[0021] Figure 2 is a simple schematic diagram of the connection relationship among the vehicle controller unit, the car machine system and the vehicle-mounted audio power amplifier in the adaptive adjustment method for a sound field center of the present application;

[0022] Figure 3 is a schematic diagram of the effect of adaptive adjustment of the sound field center under straight acceleration in the adaptive adjustment method for a sound field center of the present application;

[0023] Figure 4 is Figure 1 is a flow diagram of an exemplary embodiment of step 130 of the adaptive adjustment method of the sound field center shown in the present application;

[0024] Figure 5 is an effect diagram of the adaptive adjustment of the sound field center under linear deceleration in the adaptive adjustment method of the sound field center of the present application;

[0025] Figure 6 is an effect diagram of the adaptive adjustment of the sound field center under left turn in the adaptive adjustment method of the sound field center of the present application;

[0026] Figure 7 is an effect diagram of the adaptive adjustment of the sound field center under right turn in the adaptive adjustment method of the sound field center of the present application;

[0027] Figure 8 is Figure 1 is a flow diagram of an exemplary embodiment of step 120 of the adaptive adjustment method of the sound field center shown in the present application;

[0028] Figure 9 is a block diagram of the adaptive adjustment device of the sound field center shown in an exemplary embodiment of the present application;

[0029] Figure 10 is a structural diagram of an embodiment of the electronic device of the present application;

[0030] Figure 11 is a structural diagram of an embodiment of the computer readable storage medium of the present application. DETAILED DESCRIPTION

[0031] The scheme of the embodiments of the present application will be described in detail below with reference to the accompanying drawings of the specification.

[0032] In the following description, specific details are set forth in order to provide a thorough understanding of the present application. However, persons having ordinary skill in the art will appreciate that the present application can be practiced without the specific details.

[0033] The term "and / or" herein is merely an association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects. In addition, "multiple" herein means two or more than two. In addition, the term "at least one" herein means any one of the multiple or any combination of at least two of the multiple, for example, including at least one of A, B and C can mean including any one or more elements selected from the set consisting of A, B and C.

[0034] Please refer to Figure 1 , Figure 1 is a flow diagram of an exemplary embodiment of the adaptive adjustment method of the sound field center. Specifically, it can include the following steps:

[0035] Step S110: Obtain vehicle state information.

[0036] The vehicle state information includes vehicle acceleration, vehicle deceleration, vehicle driving direction angle, steering wheel steering angle, and vehicle speed.

[0037] The vehicle state information can be obtained by the vehicle controller unit in the adaptive adjustment device of the sound field center, and sent to the vehicle audio power amplifier by the vehicle controller unit. For example, please refer to Figure 2 , Figure 2 The connection relationship between the vehicle controller unit, the vehicle machine system, and the vehicle audio power amplifier in the adaptive adjustment device of the sound field center is shown in detail in

[0038] Step S120: Analyze the vehicle state information to obtain the vehicle driving posture.

[0039] In the embodiments of the present application, the vehicle driving posture includes at least one of straight acceleration, straight deceleration, left turning, and right turning. Of course, in other exemplary embodiments, the vehicle driving posture can also include non-straight acceleration, non-straight deceleration, etc., which is not limited in the embodiments of the present application.

[0040] The adaptive adjustment device of the sound field center can analyze one or more of the vehicle acceleration, vehicle deceleration, vehicle driving direction angle, steering wheel steering angle, and vehicle speed included in the vehicle state information, to determine which driving posture the vehicle driving posture is in, among straight acceleration, straight deceleration, left turning, and right turning.

[0041] Continuing to describe the analysis subject based on the connection relationship in Figure 2 , after the vehicle controller unit in the adaptive adjustment device of the sound field center obtains the vehicle state information and sends it to the vehicle audio power amplifier via the vehicle machine system, the vehicle audio power amplifier can analyze the vehicle state information to obtain the vehicle driving posture. For example, the vehicle audio power amplifier can analyze the acceleration, deceleration, and vehicle speed in the vehicle state information to determine the vehicle driving posture as straight acceleration or straight deceleration. For another example, the vehicle audio power amplifier can determine the vehicle driving posture as straight acceleration by judging whether the acceleration is greater than the acceleration threshold for a period of time, and the steering wheel steering angle is less than or equal to the preset steering wheel steering angle threshold.

[0042] Step S130: determining the target position of the sound field center in the vehicle space according to the actual vehicle speed under the vehicle driving posture, so as to adjust the sound field center from the current position to the target position.

[0043] The actual vehicle speed refers to the current vehicle speed corresponding to the vehicle driving posture, for example, the current driving speed of the vehicle under linear acceleration, and for example, the driving speed of the vehicle under linear deceleration, which can be specifically represented by v (t) .

[0044] The vehicle space refers to the inside of the driver's cabin.

[0045] The sound field center, i.e., the in-vehicle sound field focal point, refers to the central position of sound waves such as audio inside the driver's cabin. For details, please refer to Figure 3 , Figure 3 The figure A formed by the irregular ellipse in the figure shows the adaptive adjustment process of the sound field center in the driver's cabin under linear acceleration, wherein the adjustment process of the sound field center is that the sound field center in the driver's cabin gradually moves longitudinally backward, i.e., the adjustment trend of the sound field center is opposite to the direction of the linear acceleration of the vehicle.

[0046] The target position of the sound field center refers to the sound field center position corresponding to the actual speed under the vehicle driving posture. For example, the target position of the sound field center can be specifically a certain position on the figure A. Figure 3

[0047] The current position of the sound field center refers to the sound field center position corresponding to the vehicle speed at the previous moment of the actual vehicle speed under the vehicle driving posture. It should be noted that after the sound field center position corresponding to the actual speed under the vehicle driving posture is determined, the sound field center position corresponding to the vehicle speed at the previous moment of the actual vehicle speed under the vehicle driving posture needs to be adjusted to the sound field center position corresponding to the actual speed under the vehicle driving posture. In other words, after the target position of the sound field center in the vehicle space is determined according to the actual speed under the vehicle driving posture, the current position of the sound field center needs to be adjusted to the target position.

[0048] Considering that the personnel on the vehicle are easily affected by the vehicle action itself and cannot deeply experience the audio effect when the vehicle is operating acceleration driving, deceleration driving, left turning, right turning and the like, in order to enable the personnel on the vehicle to deeply experience the audio effect when the vehicle is operating acceleration driving, deceleration driving, left turning, right turning and the like, the adaptive adjustment device of the sound field center adjusts the current position of the sound field center to the target position determined according to the actual vehicle speed under the vehicle driving posture. It should be noted that the adaptive adjustment device of the sound field center adjusts the current position of the sound field center to the target position determined according to the actual vehicle speed under the vehicle driving posture. Figure 3 ​As shown in the straight line acceleration, the binaural change trend formed by the current position and the target position is opposite to the vehicle driving direction corresponding to the vehicle driving posture. Specifically, the vehicle driving direction is the direction indicated by arrow a, and the binaural change trend formed by the current position and the target position is the direction indicated by arrow b, i.e., the direction in which the irregular ellipse becomes larger. Therefore, the vehicle driving direction is opposite to the binaural change trend.

[0049] As can be seen, the actual vehicle speed under the vehicle driving posture is obtained by analyzing the vehicle state information, the target position of the sound field center in the vehicle space is determined, so that the sound field center is adjusted from the current position to the target position, so that the sound field center in the vehicle space can change with the actual vehicle speed under the vehicle driving posture, and dynamic adjustment of the sound field center in the vehicle space is realized.

[0050] On the basis of the above-mentioned embodiments, the embodiments of the present application adopt Figure 4 The flowchart shown in detail how to adaptively adjust the sound field center according to the vehicle driving posture under straight line acceleration, please refer to Figure 4 , Figure 4 is Figure 1 The flowchart shown in detail how to adaptively adjust the sound field center according to the vehicle driving posture under straight line acceleration, please refer to

[0051] Step S410, if the actual vehicle speed under straight line acceleration is equal to the first vehicle speed threshold, the first vehicle speed threshold is determined as the target position of the sound field center in the vehicle space.

[0052] The first vehicle speed threshold and the second vehicle speed threshold refer to the speed threshold set by man. Among them, the first vehicle speed threshold is less than the second vehicle speed threshold. Exemplarily, the first vehicle speed threshold can be 0, and the second vehicle speed threshold can be 40.

[0053] The adaptive adjustment device of the sound field center determines the vehicle driving posture as straight line acceleration, obtains the actual vehicle speed under straight line acceleration, and judges whether the actual vehicle speed is equal to the first vehicle speed threshold. If the actual vehicle speed is equal to the first vehicle speed threshold, the first vehicle speed threshold is determined as the target position of the sound field center in the vehicle space, that is, the first vehicle speed threshold is determined as the target position to which the sound field center needs to be adjusted under the actual vehicle speed. If the actual vehicle speed is not equal to the first vehicle speed threshold, it is judged whether the actual vehicle speed is greater than the first vehicle speed threshold and less than the second vehicle speed threshold. If the actual vehicle speed under straight line acceleration is greater than the first vehicle speed threshold and less than the second vehicle speed threshold, step S420 is executed. If the actual vehicle speed under straight line acceleration is greater than the first vehicle speed threshold but not less than the second vehicle speed threshold, it is further judged whether the actual vehicle speed under straight line acceleration is greater than or equal to the second vehicle speed threshold. If the actual vehicle speed under straight line acceleration is greater than or equal to the second vehicle speed threshold, step S440 is executed.

[0054] For example, the adaptive adjustment device of the sound field center determines that the target position of the sound field center in the vehicle space satisfies the following formula when the actual vehicle speed is equal to the first vehicle speed threshold value:

[0055] Y (t) = 0 V (t) = 0

[0056] wherein V (t) represents the actual vehicle speed, Y (t) represents a function for solving the target position of the sound field center in the vehicle space, and 0 is the first vehicle speed threshold value.

[0057] In step S420, if the actual vehicle speed under the straight-line acceleration is greater than the first vehicle speed threshold value and less than the second vehicle speed threshold value, the starting vehicle speed corresponding to the starting time of the vehicle and the wheelbase of the vehicle are obtained, and the first vehicle speed threshold value is less than the second vehicle speed threshold value.

[0058] The wheelbase of the vehicle refers to the length between the front and rear wheels of the vehicle, and details can be referred to the wheel length L shown in Figure 3 .

[0059] The adaptive adjustment device of the sound field center obtains the starting vehicle speed corresponding to the starting time of the vehicle and the wheelbase of the vehicle when determining that the actual vehicle speed under the straight-line acceleration is greater than the first vehicle speed threshold value and less than the second vehicle speed threshold value.

[0060] In step S430, the target position of the sound field center in the vehicle space is determined according to the starting vehicle speed, the actual vehicle speed, and the wheelbase of the vehicle.

[0061] The adaptive adjustment device of the sound field center determines the target position of the sound field center in the vehicle space through the starting vehicle speed, the actual vehicle speed, and the wheelbase of the vehicle. Specifically, the adaptive adjustment device of the sound field center calculates the vehicle speed difference between the actual vehicle speed and the starting vehicle speed, takes the ratio between the current time corresponding to the actual vehicle speed and the vehicle speed difference as the first ratio, calculates the second ratio between the first ratio and the numerical threshold value, and calculates the third ratio between the wheelbase of the vehicle and the wheelbase threshold value. The opposite of the product between the second ratio and the third ratio is taken as the target position of the sound field center in the vehicle space. It should be noted that the numerical threshold value and the wheelbase threshold value are artificially set values. For example, the numerical threshold value can be 20, and the wheelbase threshold value can be 2.

[0062] For example, the target position of the sound field center in the vehicle space satisfies the following formula when the actual vehicle speed under the straight-line acceleration is greater than the first vehicle speed threshold value and less than the second vehicle speed threshold value:

[0063]

[0064] wherein V (t) represents the actual vehicle speed, V(0) represents a starting vehicle speed, L represents a vehicle wheelbase, 2 is a wheelbase threshold value, 20 is a numerical threshold value, t represents a current time corresponding to the actual vehicle speed, Y (t) represents a function of solving a target position of a sound field center in a vehicle space.

[0065] In step S440, if the actual vehicle speed under the linear acceleration is greater than or equal to the second vehicle speed threshold value, a next vehicle speed corresponding to a next time is obtained, the next time including a time later than the current time corresponding to the actual vehicle speed.

[0066] The next time refers to a time later than the current time corresponding to the actual vehicle speed. For example, the actual vehicle speed is represented as V (t) , the current time is represented as t, and the next vehicle speed can be represented as V (t+Δt) , and the next time is represented as t+Δt, Δ t represents a period of time after the current time t.

[0067] The adaptive adjustment device of the sound field center determines the next vehicle speed corresponding to the next time if the actual vehicle speed under the linear acceleration is greater than or equal to the second vehicle speed threshold value.

[0068] In step S450, if the next vehicle speed is greater than the actual vehicle speed, the vehicle wheelbase is obtained.

[0069] The adaptive adjustment device of the sound field center further determines whether the next vehicle speed is greater than the actual vehicle speed if the actual vehicle speed under the linear acceleration is greater than or equal to the second vehicle speed threshold value, and obtains the vehicle wheelbase if so.

[0070] In step S460, the target position of the sound field center in the vehicle space is determined according to the vehicle wheelbase.

[0071] The adaptive adjustment device of the sound field center determines the target position of the sound field center in the vehicle space through the vehicle wheelbase. Specifically, the adaptive adjustment device of the sound field center calculates a fourth ratio between the vehicle wheelbase and the wheelbase threshold value; and takes an inverse of the fourth ratio as the target position of the sound field center in the vehicle space.

[0072] For example, in the case that the actual vehicle speed under the linear acceleration is greater than the second vehicle speed threshold value and the next vehicle speed is greater than the actual vehicle speed, the target position of the sound field center in the vehicle space satisfies the following formula:

[0073]

[0074] wherein V (t) represents the actual vehicle speed, V (t+Δt) represents the next vehicle speed, L represents the vehicle wheelbase, 2 is the wheelbase threshold value, t represents the current time corresponding to the actual vehicle speed, and the next time is represented as t+Δt, Δ trepresents a period of time after the current time t, Y (t) represents a function of solving the target position of the sound field center in the vehicle space.

[0075] It can be seen that the present application calculates the target position of the sound field center in the vehicle space under different vehicle driving postures through the size relationship between the actual vehicle speed under straight-line acceleration and the first vehicle speed threshold and the second vehicle speed threshold. Specifically, if the actual vehicle speed under straight-line acceleration is greater than the first vehicle speed threshold and less than the second vehicle speed threshold, the starting vehicle speed corresponding to the starting time of the vehicle and the wheelbase of the vehicle are obtained, the first vehicle speed threshold is less than the second vehicle speed threshold, and the target position of the sound field center in the vehicle space is determined according to the starting vehicle speed, the actual vehicle speed, and the wheelbase of the vehicle. If the actual vehicle speed under straight-line acceleration is greater than or equal to the second vehicle speed threshold, the next vehicle speed corresponding to the next time is obtained, the next time includes a time later than the current time corresponding to the actual vehicle speed, and if the next vehicle speed is greater than the actual vehicle speed, the wheelbase of the vehicle is obtained, and the target position of the sound field center in the vehicle space is determined according to the wheelbase of the vehicle. If the actual vehicle speed under straight-line acceleration is equal to the first vehicle speed threshold, the first vehicle speed threshold is determined as the target position of the sound field center in the vehicle space. Thus, the sound field center in the vehicle space can change with the actual vehicle speed under the vehicle driving posture, and dynamic adjustment of the sound field center in the vehicle space can be realized.

[0076] On the basis of the above-mentioned embodiments, the binaural sound change trend formed between the current position and the target position in the process of adjusting the sound field center from the current position to the target position under straight-line deceleration can be obtained by analogy. Details can be referred to in Figure 5 , Figure 5 The effect diagram of adaptive adjustment of the sound field center under straight-line deceleration is shown in Figure 5 , as shown in the figure, the binaural sound change trend is the graph B shown in the figure, and the sound field center is adjusted from b1 to b2 of the graph B formed by the irregular ellipse, that is, the direction indicated by the arrow b. Among them, the adjustment direction of the sound field center from b1 to b2 is exactly the same as the driving direction of the vehicle, specifically, the driving direction of the vehicle is the direction indicated by the arrow a.

[0077] On the basis of the above-mentioned embodiments, the binaural sound change trend formed between the current position and the target position in the process of adjusting the sound field center from the current position to the target position under straight-line deceleration can be obtained by analogy. Details can be referred to in Figure 6 , Figure 6 The effect diagram of adaptive adjustment of the sound field center under straight-line deceleration is shown in Figure 6As shown, the stereo sound change trend is represented by graph C in the figure. As the vehicle turns left, the sound field center adjusts from point c1 to point c2 in graph C, which is the direction indicated by arrow b. The direction of the sound field center adjustment from point c1 to point c2 is exactly opposite to the vehicle's direction of travel, specifically, the direction indicated by arrow a.

[0078] Based on the above embodiments, the stereo sound change trend between the current position and the target position can be obtained similarly during the process of adjusting the sound field center from the current position to the target position during a right turn. For details, please refer to [link / reference]. Figure 7 , Figure 7 The diagram illustrates the effect of adaptive adjustment of the sound field center during a right turn, as shown below. Figure 7 As shown, the stereo sound change trend is represented by graph D in the figure. As the vehicle turns right, the sound field center adjusts from point d1 to point d2 in graph D, which is the direction indicated by arrow b. The direction of the sound field center adjustment from point d1 to point d2 is exactly opposite to the vehicle's direction of travel, specifically the direction indicated by arrow a.

[0079] As can be seen from the above, when the vehicle is accelerating in a straight line, the center of the sound field gradually shifts backward longitudinally, that is... Figure 3 The direction indicated by the middle arrow b; when the vehicle is decelerating in a straight line, the center of the sound field gradually shifts forward longitudinally, that is... Figure 5 The direction indicated by the middle arrow b; when the vehicle is turning left, the center of the sound field gradually shifts to the right front, that is... Figure 6 The direction indicated by the middle arrow b; when the vehicle is turning right, the center of the sound field gradually shifts to the left and front, that is... Figure 7 The direction indicated by the middle arrow b.

[0080] Based on the above embodiments, the embodiments of this application adopt... Figure 8 The flowchart shown is described Figure 1 Step S120 analyzes the vehicle status information to obtain the vehicle's driving posture, as detailed below:

[0081] Step S810: Obtain the starting speed and actual speed included in the vehicle status information.

[0082] Starting speed refers to the vehicle's initial speed.

[0083] Actual vehicle speed refers to the speed at which the vehicle is currently moving, i.e., the current speed.

[0084] The adaptive adjustment device at the center of the sound field acquires the initial vehicle speed and actual vehicle speed from the vehicle status information.

[0085] In step S820, if the actual vehicle speed is greater than the initial vehicle speed and the vehicle acceleration is greater than zero, it is determined that the vehicle driving posture is straight acceleration.

[0086] The adaptive adjustment device of the sound field center determines the vehicle driving posture by judging whether the actual vehicle speed is greater than the initial vehicle speed and whether the vehicle acceleration is greater than zero. Specifically, if it is determined that the actual vehicle speed is greater than the initial vehicle speed and the acceleration is greater than zero, it is determined that the vehicle driving posture is straight acceleration.

[0087] It should be noted that the determination of the vehicle driving posture as straight acceleration is based on the actual vehicle speed, the initial vehicle speed, and the vehicle acceleration. Alternatively, the vehicle driving posture can be determined based on the actual vehicle speed, the initial vehicle speed, the vehicle driving direction angle, and the vehicle acceleration. Further, the determination of the vehicle driving posture as straight deceleration can be based on the actual vehicle speed, the initial vehicle speed, and the vehicle deceleration. The determination of the vehicle driving posture as left or right turning can be based on the vehicle driving direction angle and the steering wheel rotation speed.

[0088] It can be seen that the vehicle driving posture is determined based on the vehicle acceleration, the vehicle deceleration, the vehicle driving direction angle, the steering wheel turning angle, and the vehicle speed included in the vehicle state information. This can improve the accuracy of the vehicle driving posture, so as to dynamically adjust the sound field center in the vehicle cabin according to the vehicle driving posture.

[0089] It should be noted that the application scenario of the adaptive adjustment method of the sound field center can be that the sound field center of the music played in the vehicle space is dynamically adjusted according to the vehicle driving posture. Alternatively, the sound field center of the prompt or warning sound in the vehicle space can be dynamically adjusted according to the vehicle driving posture, wherein the prompt or warning sound includes the in-vehicle turning sound, the in-vehicle blind area warning sound, the in-vehicle radar obstacle warning sound, etc. Alternatively, the sound field center of the sound wave simulation in the vehicle space can be dynamically adjusted according to the vehicle driving posture, wherein the sound wave simulation refers to the function of the sound wave simulation completed by the vehicle audio power amplifier. In this regard, the adaptive adjustment method of the sound field center is not limited to the application scenario.

[0090] It should be further explained that the execution subject of the adaptive adjustment method of the sound field center can be an adaptive adjustment device of the sound field center. For example, the adaptive adjustment method of the sound field center can be executed by a terminal device or a server or other processing device, wherein the terminal device can be a user equipment (UE), a computer, a mobile device, a user terminal, a terminal, a cellular phone, a cordless phone, a personal digital assistant (PDA), a handheld device, a computing device, a vehicle-mounted device, a wearable device, etc. The execution subject of the adaptive adjustment method of the sound field center can also be a vehicle-mounted audio power amplifier in the adaptive adjustment device of the sound field center. In some possible implementation manners, the adaptive adjustment method of the sound field center can be implemented by a processor invoking computer readable instructions stored in a memory.

[0091] Figure 9 is a block diagram of an adaptive adjustment device of a sound field center according to an example embodiment of the present application. As shown in the figure, the example adaptive adjustment device 900 of the sound field center includes an acquisition module 910, an analysis module 920, and an adjustment module 930. Specifically: Figure 9

[0092] The acquisition module 910 is configured to acquire vehicle state information, wherein the vehicle state information at least includes vehicle acceleration, vehicle deceleration, vehicle driving direction angle, and vehicle speed.

[0093] The analysis module 920 is configured to analyze the vehicle state information to obtain a vehicle driving posture, wherein the vehicle driving posture includes at least one of straight acceleration, straight deceleration, left turning, and right turning.

[0094] The adjustment module 930 is configured to determine a target position of the sound field center in the vehicle space according to an actual vehicle speed in the vehicle driving posture, so as to adjust the sound field center from a current position to the target position.

[0095] In the example adaptive adjustment device of the sound field center, the vehicle state information is acquired, wherein the vehicle state information at least includes vehicle acceleration, vehicle deceleration, vehicle driving direction angle, steering wheel turning angle, and vehicle speed. The vehicle state information is analyzed to obtain a vehicle driving posture, wherein the vehicle driving posture includes at least one of straight acceleration, straight deceleration, left turning, and right turning. A target position of the sound field center in the vehicle space is determined according to an actual vehicle speed in the vehicle driving posture, so as to adjust the sound field center from a current position to the target position. Thus, the sound field center in the vehicle space can change with the actual vehicle speed in the vehicle driving posture, and dynamic adjustment of the sound field center in the vehicle space is realized.

[0096] ​The functions of the modules can be referred to the adaptive adjustment method of the sound field center, which will not be repeated here.

[0097] Please refer to Figure 10 , Figure 10 is a structural schematic diagram of an embodiment of an electronic device of the present application. The electronic device 100 includes a memory 101 and a processor 102, and the processor 102 is configured to execute program instructions stored in the memory 101 to implement the steps in any of the above-mentioned adaptive adjustment methods of the sound field center. In a specific implementation scenario, the electronic device 100 can include but is not limited to a microcomputer, a server, and in addition, the electronic device 100 can also include a notebook computer, a tablet computer, and other mobile devices, which are not limited here.

[0098] Specifically, the processor 102 is configured to control itself and the memory 101 to implement the steps in any of the above-mentioned adaptive adjustment methods of the sound field center. The processor 102 can also be referred to as a CPU (Central Processing Unit). The processor 102 can be an integrated circuit chip with signal processing capability. The processor 102 can also be a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. In addition, the processor 102 can be implemented by an integrated circuit chip together.

[0099] The above scheme determines the target position of the sound field center in the vehicle space by analyzing the actual vehicle speed under the vehicle driving posture obtained from the vehicle state information, so as to adjust the sound field center from the current position to the target position, thereby enabling the sound field center in the vehicle space to change with the actual vehicle speed under the vehicle driving posture, and realizing dynamic adjustment of the sound field center in the vehicle space.

[0100] Please refer to Figure 11 , Figure 11 is a structural schematic diagram of an embodiment of a computer-readable storage medium of the present application. The computer-readable storage medium 110 stores program instructions 111 that can be executed by a processor, and the program instructions 111 are used to implement the steps in any of the above-mentioned adaptive adjustment methods of the sound field center.

[0101] The scheme is characterized in that: vehicle state information is acquired, wherein the vehicle state information at least includes vehicle acceleration, vehicle deceleration, vehicle driving direction angle, steering wheel steering angle and vehicle speed; the vehicle state information is analyzed to obtain a vehicle driving posture, wherein the vehicle driving posture includes at least one of straight-line acceleration, straight-line deceleration, left-turning and right-turning; a target position of a sound field center in a vehicle space is determined according to an actual vehicle speed in the vehicle driving posture, so that the sound field center is adjusted from a current position to the target position, thereby enabling the sound field center in the vehicle space to change with the actual vehicle speed in the vehicle driving posture, and realizing dynamic adjustment of the sound field center in the vehicle space.

[0102] In some embodiments, the apparatus provided by the embodiments of the present disclosure has functions or includes modules that can be used to perform the methods described in the above method embodiments, and the specific implementation can refer to the description of the above method embodiments. For brevity, it will not be repeated here.

[0103] The above description of each embodiment tends to emphasize the differences between each embodiment, and the same or similar parts can be mutually referred to, and for brevity, will not be repeated here.

[0104] In several embodiments provided in the present application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the above-described device implementation is only schematic, for example, the division of modules or units is only a logical function division, and actual implementation can have another division manner, for example, a unit or component can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed each other can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0105] In addition, each of the function units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software function unit. When the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application, essentially or in the form of a contribution to the prior art, or all or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor execute all or part of the steps of the methods in each embodiment of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

Claims

1. An adaptive adjustment method for the center of a sound field, characterized in that, The method includes: Obtain vehicle status information; wherein, the vehicle status information includes at least vehicle acceleration, vehicle deceleration, vehicle direction angle, steering wheel angle, and vehicle speed; The vehicle status information is analyzed to obtain the vehicle driving posture; wherein the vehicle driving posture includes at least one of linear acceleration, linear deceleration, left turn, and right turn; Based on the actual vehicle speed under the vehicle's driving posture, determine the target position of the sound field center in the vehicle space, so that the sound field center can be adjusted from the current position to the target position; If the vehicle's driving posture is linear acceleration, the step of determining the target position of the sound field center in the vehicle space based on the actual vehicle speed under the driving posture includes: If the actual vehicle speed during linear acceleration is greater than a first vehicle speed threshold and less than a second vehicle speed threshold, then the initial vehicle speed corresponding to the vehicle's starting time and the vehicle wheelbase are obtained, where the first vehicle speed threshold is less than the second vehicle speed threshold; the target position of the sound field center in the vehicle space is determined based on the initial vehicle speed, the actual vehicle speed, and the vehicle wheelbase; or... If the actual vehicle speed under the linear acceleration is greater than or equal to the second vehicle speed threshold, then the next vehicle speed corresponding to the next time is obtained, and the next time includes the time later than the current time corresponding to the actual vehicle speed; if the next vehicle speed is greater than the actual vehicle speed, then the vehicle wheelbase is obtained; and the target position of the sound field center in the vehicle space is determined based on the vehicle wheelbase.

2. The method according to claim 1, characterized in that, If the vehicle's driving posture is one of the following: straight-line acceleration, left turn, or right turn, the stereo change trend formed by the current position and the target position is opposite to the vehicle's driving direction corresponding to the vehicle's driving posture.

3. The method according to claim 1, characterized in that, If the vehicle's driving posture is linear deceleration, the stereo change trend formed by the current position and the target position is the same as the vehicle's driving direction corresponding to the vehicle's driving posture.

4. The method according to claim 1, characterized in that, The step of determining the target position of the sound field center in the vehicle space based on the initial vehicle speed, the actual vehicle speed, and the vehicle wheelbase includes: Calculate a first ratio between the speed difference between the actual vehicle speed and the initial vehicle speed and the current time corresponding to the actual vehicle speed, and calculate a second ratio between the first ratio and a numerical threshold. Calculate the third ratio between the vehicle wheelbase and the wheelbase threshold; The negative of the product between the second ratio and the third ratio is taken as the target position of the sound field center in the vehicle space.

5. The method according to claim 1, characterized in that, The step of determining the target position of the sound field center in the vehicle space based on the vehicle wheelbase includes: Calculate the fourth ratio between the vehicle wheelbase and the wheelbase threshold; The opposite of the fourth ratio is taken as the target position of the sound field center in the vehicle space.

6. The method according to claim 1, characterized in that, The vehicle's driving posture is linear acceleration. The step of determining the target position of the sound field center in the vehicle space based on the actual vehicle speed under the driving posture includes: If the actual vehicle speed under linear acceleration is equal to the first vehicle speed threshold, then the first vehicle speed threshold is determined as the target position of the sound field center in the vehicle space.

7. The method according to claim 1, characterized in that, The step of analyzing the vehicle state information to obtain the vehicle driving posture includes: Obtain the initial vehicle speed and actual vehicle speed included in the vehicle status information; If the actual vehicle speed is greater than the initial vehicle speed and the vehicle acceleration is greater than zero, then the vehicle's driving posture is determined to be linear acceleration.

8. An adaptive adjustment device for the center of a sound field, characterized in that, include: The acquisition module is used to acquire vehicle status information; wherein, the vehicle status information includes at least vehicle acceleration, vehicle deceleration, vehicle driving direction angle, and vehicle speed; The analysis module is used to analyze the vehicle status information to obtain the vehicle driving posture; wherein the vehicle driving posture includes at least one of linear acceleration, linear deceleration, left turn, and right turn; An adjustment module is used to determine the target position of the sound field center in the vehicle space based on the actual vehicle speed under the vehicle's driving posture, so that the sound field center is adjusted from the current position to the target position. The vehicle's driving posture is linear acceleration. The step of determining the target position of the sound field center in the vehicle space based on the actual vehicle speed under the vehicle's driving posture includes: if the actual vehicle speed under linear acceleration is greater than a first vehicle speed threshold and less than a second vehicle speed threshold, then obtaining the initial vehicle speed and vehicle wheelbase corresponding to the vehicle's starting time, wherein the first vehicle speed threshold is less than the second vehicle speed threshold; determining the target position of the sound field center in the vehicle space based on the initial vehicle speed, the actual vehicle speed, and the vehicle wheelbase; or, if the actual vehicle speed under linear acceleration is greater than or equal to the second vehicle speed threshold, then obtaining the next vehicle speed corresponding to the next time, wherein the next time includes a time later than the current time corresponding to the actual vehicle speed; if the next vehicle speed is greater than the actual vehicle speed, then obtaining the vehicle wheelbase; determining the target position of the sound field center in the vehicle space based on the vehicle wheelbase.

9. An electronic device, characterized in that, The method includes a memory and a processor, the processor being configured to execute program instructions stored in the memory to implement the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having program instructions stored thereon, characterized in that, When the program instructions are executed by the processor, they implement the method described in any one of claims 1 to 7.

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