Vehicle-mounted sound effect automatic adjustment method, device and equipment and readable storage medium

Abstract

The invention discloses a vehicle-mounted sound effect automatic adjustment method, device and equipment and a readable storage medium, and relates to the technical field of sound field adjustment, and the vehicle-mounted sound effect automatic adjustment method comprises the steps: obtaining audio parameter information which is pre-calibrated based on an optimal sound effect at a preset riding position in a vehicle; detecting an actual riding position of a passenger in the vehicle, and determining a sound effect parameter loss value according to the actual riding position and a preset riding position; determining an audio parameter compensation value according to the sound effect parameter loss value, and performing compensation adjustment on the audio parameter information according to the audio parameter compensation value to obtain a target audio parameter; and controlling the vehicle-mounted sound equipment to play according to the target audio parameter. According to the method and the device, the vehicle-mounted sound system can be automatically and adaptively adjusted, so that passengers can enjoy the adjusted sound field and sound effect in a riding scene every time.

Description

Technical Field

[0001] The present application relates to the technical field of sound field adjustment, and in particular to a method, device, equipment and readable storage medium for automatic adjustment of vehicle-mounted sound effects. Background Art

[0002] As more and more cars enter ordinary families, the use of cars becomes more and more frequent, and cars are becoming more intelligent and humanized. As an essential entertainment device for cars, the sound effects of car audio directly affect the driving experience. For passengers in different positions, different sound effect modes are often required to achieve the best effect. At present, different sound effect modes have been formed for passengers in different seats through special optimization of sound effects (such as frequency response, phase, delay, etc.), such as driver sound effect mode, front row sound effect mode, rear row sound effect mode or whole car sound effect mode, etc. Each sound effect mode will optimize the sound effect heard by the corresponding passengers, and may reduce the sound effect in other positions.

[0003] However, for traditional car audio systems, users can only manually adjust different sound modes, such as obtaining the desired sound mode through multi-level menu operations. Especially when driving a vehicle, there are certain safety risks if multi-level menus are operated.

[0004] Therefore, how to automatically and adaptively adjust the car audio system so that passengers can enjoy the well-tuned sound field and sound effects every time they ride. Summary of the invention

[0005] The main purpose of this application is to provide a method, device, equipment and readable storage medium for automatic adjustment of vehicle-mounted sound effects, aiming to solve the technical problem of how to automatically and adaptively adjust the vehicle-mounted audio system so that passengers can enjoy the calibrated sound field and sound effects every time they ride.

[0006] To achieve the above objectives, the present application provides a method for automatically adjusting vehicle-mounted sound effects, comprising: Obtaining audio parameter information pre-calibrated based on optimal sound effects at a preset seating position in the vehicle; Detecting an actual sitting position of an occupant in the vehicle, and determining a sound effect parameter loss value according to the actual sitting position and the preset sitting position; Determining an audio parameter compensation value according to the sound effect parameter loss value, and performing compensation adjustment on the audio parameter information according to the audio parameter compensation value to obtain a target audio parameter; The vehicle audio system is controlled to play the target audio parameters.

[0007] Optionally, the step of determining the sound effect parameter loss value according to the actual sitting position and the preset sitting position includes: Querying and obtaining a sound attenuation parameter between the actual seating position and the preset seating position from a pre-calibrated position mapping attenuation data table, wherein the sound attenuation parameter includes at least one of a propagation distance attenuation parameter and a physical barrier attenuation parameter; The sound effect parameter loss value is determined according to the sound effect attenuation parameter obtained by the query.

[0008] Optionally, the sound effect parameter loss value includes an audio phase loss value and an audio amplitude loss value, and the step of determining the audio parameter compensation value according to the sound effect parameter loss value includes: An audio phase compensation value of the audio parameter information is determined according to the audio phase loss value, and an audio amplitude compensation value of the audio parameter information is determined according to the audio amplitude loss value.

[0009] Optionally, the step of detecting the actual sitting position of the occupant in the vehicle comprises: Receive Bluetooth information packets or WIFI information packets sent by the vehicle-mounted AR device worn by the passengers in the vehicle; According to the Bluetooth information packet, the vehicle occupants are positioned by Bluetooth to obtain the actual sitting position of the vehicle occupants; or, according to the WIFI information packet, the vehicle occupants are positioned by WIFI to obtain the actual sitting position of the vehicle occupants.

[0010] Optionally, after the step of detecting the actual seating position of the occupant in the vehicle, the method further comprises: Determining whether the number of passengers in the vehicle is one according to the actual seating position; If the number of passengers in the vehicle is one, the step of determining the sound parameter loss value according to the actual sitting position and the preset sitting position is performed.

[0011] Optionally, after the step of determining whether the number of passengers in the vehicle is one, the method further includes: If there are multiple passengers in the vehicle, the sound effect mode mapped by the seating distribution information is called from a pre-stored sound effect mode mapping table according to the seating distribution information corresponding to each actual seating position; the called sound effect mode is used as the target sound effect mode, and the vehicle audio is controlled to play with the target sound effect mode, wherein the target sound effect mode is the front row sound effect mode, the rear row sound effect mode or the whole vehicle sound effect mode.

[0012] Optionally, after the step of determining whether the number of passengers in the vehicle is one, the method further includes: If there are multiple passengers in the vehicle, then obtaining the physical characteristic information corresponding to the registration input of each seat, wherein the physical characteristic information includes height and body proportion; Detecting seat adjustment information corresponding to each seat in the vehicle, wherein the seat adjustment information includes a seat back angle and a seat height; Determining the user ear position corresponding to each occupant in the vehicle according to the seat adjustment information, the body feature information, and the seating distribution information corresponding to each actual seating position; The target audio parameters mapped to the user's ear position are obtained by querying from a preset mapping table, and the vehicle audio system is controlled to play with the target audio parameters.

[0013] In addition, the present application also provides a vehicle-mounted sound effect automatic adjustment device, comprising: An acquisition module, used to acquire audio parameter information pre-calibrated based on optimal sound effects at a preset seating position in the vehicle; A determination module, used for detecting an actual sitting position of an occupant in the vehicle, and determining a sound effect parameter loss value according to the actual sitting position and the preset sitting position; A compensation module, used to determine an audio parameter compensation value according to the sound effect parameter loss value, and to compensate and adjust the audio parameter information according to the audio parameter compensation value to obtain a target audio parameter; The control module is used to control the vehicle audio system to play the target audio parameters.

[0014] The present application also provides an automatic vehicle sound effect adjustment device, which is a physical device, and includes: a memory, a processor, and a program of the automatic vehicle sound effect adjustment method stored in the memory and executable on the processor. When the program of the automatic vehicle sound effect adjustment method is executed by the processor, the steps of the automatic vehicle sound effect adjustment method as described above can be implemented.

[0015] The present application also provides a readable storage medium, which is a computer-readable storage medium. The computer-readable storage medium stores a program for implementing a method for automatically adjusting vehicle-mounted sound effects. The program for implementing a method for automatically adjusting vehicle-mounted sound effects is executed by a processor to implement the steps of the method for automatically adjusting vehicle-mounted sound effects as described above.

[0016] The present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for automatically adjusting vehicle sound effects.

[0017] The technical solution of the present application is to obtain the audio parameter information pre-calibrated based on the best sound effect at the preset sitting position in the car, then detect the actual sitting position of the occupant in the car, and determine the sound effect parameter loss value based on the actual sitting position and the preset sitting position, and then determine the audio parameter compensation value based on the sound effect parameter loss value, and compensate and adjust the audio parameter information based on the audio parameter compensation value to obtain the target audio parameter, and finally control the car audio to play with the target audio parameter, so as to judge the situation of the occupants through the sensing sensor, control the car audio to switch different audio playback parameters, and thus improve the effect of the car audio playback. That is, in each riding scene, no matter how the user's sitting position changes, the car audio can be automatically and adaptively adjusted, so that passengers can enjoy the adjusted sound field and sound effects in each riding scene. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0019] In order to more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is a flow chart of the first embodiment of the method for automatically adjusting vehicle sound effects of the present application; Figure 2 This is a flow chart of a second embodiment of the method for automatically adjusting vehicle audio effects of the present application; Figure 3 This is a schematic diagram of the module structure of the vehicle-mounted automatic sound effect adjustment device according to an embodiment of the present application; Figure 4 Schematic diagram of the device structure of the hardware operating environment involved in the vehicle-mounted sound effect automatic adjustment device in this embodiment.

[0021] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0023] Embodiment 1 For traditional car audio systems, users can only manually adjust different sound modes, such as obtaining the desired sound mode through multi-level menu operations. Especially when driving a vehicle, there are certain safety risks if multi-level menus are operated.

[0024] Therefore, how to automatically and adaptively adjust the car audio system so that passengers can enjoy the well-tuned sound field and sound effects every time they ride.

[0025] Based on this, the present application embodiment provides a method for automatically adjusting the vehicle sound effects. Figure 1 , Figure 1 This is a flow chart of the first embodiment of the method for automatically adjusting the vehicle audio effect of the present application, including: Step S10, obtaining audio parameter information pre-calibrated based on optimal sound effects at a preset seating position in the vehicle; In this embodiment, the preset seat position can be the main driver's seat, the co-driver's seat or the rear right seat, etc., and this embodiment does not specifically limit this. For example, when the preset seat position is the main driver's seat, the audio parameter information pre-calibrated based on the best sound effect is relative to the user in the main driver's seat, that is, when the car audio plays audio based on the pre-calibrated audio parameter information, the user in the main driver's seat hears the best audio effect.

[0026] Step S20, detecting the actual sitting position of the occupant in the vehicle, and determining the sound effect parameter loss value according to the actual sitting position and the preset sitting position; The actual sitting position of the user in the vehicle can be identified through images or videos obtained by the vehicle-mounted camera and / or load-bearing information obtained by the seat sensor.

[0027] In one embodiment, the seat sensor may be a gravity sensor (or a pressure sensor), and the seating position information may be obtained by analyzing the load-bearing information obtained by the seat sensor. For example, if the weight information obtained by the seat sensor on the front passenger seat is 50 kg, it is determined that there is a user on the front passenger seat, and the front passenger seat is taken as the actual seating position of the occupant in the vehicle.

[0028] In another embodiment, the seat sensor may be an infrared sensor, which detects the physical volume of the seat and detects whether there is a human body on the seat based on whether the physical volume of the seat is greater than a preset volume threshold, thereby identifying the actual sitting position of the occupant in the vehicle.

[0029] In yet another embodiment, the seat sensor may be an inductive sensor that detects whether a seat belt is buckled. By detecting whether the seat belt on the seat is fastened, it is determined whether there is a human body on the seat, thereby identifying the actual sitting position of the occupant in the vehicle.

[0030] In this embodiment, the actual sitting position of the user in each riding scenario may often be different from the preset sitting position that is pre-calibrated based on the best sound effect. For example, the preset sitting position is the main driving seat, and the actual sitting position is the co-pilot seat. The audio parameter information originally calibrated is that the audio effect heard at the main driving seat is the best, but the audio effect heard at the co-pilot seat cannot ensure the best audio effect (this is because the audio parameter information was originally calibrated based on the distance between the vehicle audio system and the preset sitting position and the sound pickup angle). That is, if there is a deviation between the actual sitting position and the preset sitting position, then the audio played by the vehicle audio system is transmitted to the actual sitting position of the user, and there will be more sound effect parameter loss values, wherein the sound effect parameter loss values ​​may include audio phase loss values ​​and audio amplitude loss values.

[0031] After step S20, step S30 is performed to determine an audio parameter compensation value according to the sound effect parameter loss value, and to compensate and adjust the audio parameter information according to the audio parameter compensation value to obtain a target audio parameter; It is known that when the audio parameters of the vehicle audio remain unchanged, if the user's sitting position in the vehicle cabin is different, the sound effects heard by the user are also different. In this embodiment, when the user's sitting position changes, the sound effect parameter loss value can be calibrated according to the position distance between the actual sitting position and the preset sitting position, and whether there is an obstruction (such as other seats) between the actual sitting position and the preset sitting position, so as to facilitate the subsequent determination of the audio parameter compensation value according to the sound effect parameter loss value, and according to the audio parameter compensation value, the audio parameter information is compensated and adjusted to obtain the target audio parameter. Among them, the compensation adjustment degree of the audio parameter is based on the current sound effect of the current audio received by the actual sitting position reaching the best sound effect of the preset sitting position. Specifically, when a user of standard height is located in a fixed position with a standard sitting posture, the user's human ear can receive the preset sound effect of the current audio, wherein the preset sound effect can be a sound effect that is pre-adjusted to achieve the best auditory enjoyment. It can also be understood that when the distance and angle between the user's ear and the vehicle audio are the preset distance and preset angle, the current sound effect of the current audio played from the vehicle audio with the preset audio parameters received by the ear is the preset sound effect. In this embodiment, when the actual sitting position of the occupant in the vehicle changes, the distance and angle between the ear and the vehicle audio change. At this time, the audio parameter compensation value required when the current sound effect of the current audio played from the speaker (i.e., the vehicle audio) reaches the preset sound effect can be calibrated according to the moving distance and deflection angle between the actual sitting position and the preset sitting position. By calibrating the audio parameter compensation values ​​required when the preset sound effect is reached for multiple different actual sitting positions, it is convenient for the user to receive the current sound effect of the current audio played from the vehicle audio at different sitting positions and keep it as the preset sound effect, so that the user can continue to enjoy the adjusted sound field and sound effect no matter how the user's sitting position moves.

[0032] Exemplarily, the sound effect parameter loss value includes an audio phase loss value and an audio amplitude loss value, and the step of determining the audio parameter compensation value according to the sound effect parameter loss value includes: Step A10: determining an audio phase compensation value of the audio parameter information according to the audio phase loss value, and determining an audio amplitude compensation value of the audio parameter information according to the audio amplitude loss value.

[0033] It is known to those skilled in the art that the propagation of sound will cause the attenuation of the sound signal as the distance increases or the obstruction of the barrier (such as the vehicle seat). That is, when other factors are the same (single variable), the longer the sound propagation distance, the greater the sound effect parameter loss value. Or when other factors are the same (single variable, such as equal distance, the same barrier material, and the same barrier area of ​​the barrier in the audio propagation direction), the thicker the barrier thickness of the barrier that attenuates the sound, the greater the sound effect parameter loss value. Or when other factors are the same (single variable, such as equal distance, the same barrier material, the same barrier area, and the same barrier thickness), the greater the barrier area of ​​the barrier in the audio propagation direction, the greater the sound effect parameter loss value. It should be noted that the audio attenuation information corresponding to the sound effect parameter loss value may include an audio amplitude loss value and an audio phase loss value.

[0034] It is easy to understand that since the position of the car audio system is fixed, different user seating positions often result in different relative spatial distances between the user and the car audio system, as well as different sound pickup angles between the user's ear and the car audio system. Therefore, different user seating positions often correspond to different sound effect parameter loss values ​​(including audio phase loss values ​​and audio amplitude loss values).

[0035] Because in different riding scenarios, the distance and orientation of the fixed-position car audio system relative to different riding positions are different. That is, due to the difference in the riding positions of the same sound source (i.e., the audio played by the same car audio system) relative to different users, for example, the farther the user's riding position is from the sound source, or the greater the structural density / volume of the barrier between the user and the sound source, the more incomplete the information of the target audio picked up by the human ear, and the worse the sound effect heard by the user. Therefore, this embodiment detects the actual riding position of the occupant in the car, and determines the sound effect parameter loss value based on the actual riding position and the preset riding position, and determines the audio parameter compensation value based on the sound effect parameter loss value, and compensates and adjusts the audio parameter information based on the audio parameter compensation value to obtain the target audio parameters, thereby restoring the target audio as much as possible, and avoiding the attenuation of the audio signal of the target audio to the greatest extent to affect the user's sound effect experience of the target audio.

[0036] After step S30, step S40 is executed to control the vehicle audio system to play the target audio parameters.

[0037] When the audio parameters of the car audio remain unchanged, if the user's sitting position is different, the sound effects heard by the user will also be different. In this embodiment, when the user's actual sitting position changes, the audio parameters of the current car audio can be adjusted according to the moving distance and deflection angle between the actual sitting position and the preset sitting position. Specifically, when a user of standard height is located in the preset sitting position with a standard sitting posture, the user's human ear can receive the preset sound effect of the current audio, wherein the preset sound effect can be a sound effect that has been pre-adjusted to achieve the best auditory enjoyment. It can also be understood that when the distance and angle between the user's human ear and the speaker are the preset distance and preset angle, the current sound effect of the current audio played from the speaker with the preset audio parameters received by the human ear is the preset sound effect. In this embodiment, when the user's sitting position changes, the distance and angle between the human ear and the speaker change. At this time, the sound effect parameter loss value can be determined based on the moving distance and deflection angle between the actual sitting position and the preset sitting position, and then the audio parameter compensation value required when the current sound effect of the current audio played from the speaker reaches the preset sound effect is calculated, and then the audio parameters of the car audio are compensated and adjusted in real time based on the calculated audio parameter compensation value, so that in the process of changing the actual sitting position of the occupant in the car, the current sound effect of the current audio played from the speaker received by the human ear can remain the preset sound effect, so that the user can continue to enjoy the well-tuned sound field and sound effect no matter how the user's head moves.

[0038] In this embodiment, 4 to 6 speakers (i.e., car audio) are usually installed on the vehicle, a tweeter is installed under the front windshield, and a woofer is installed on the lower middle side of the door. The separation of high and low frequencies can increase the transparency of the music, so that users can listen to music in a small space in the car without turbidity and with better sound effects. However, there are multiple positions in the car, such as the main driver's seat, the co-driver's seat, and the back row. Different positions have different sound effects due to the different distances from each speaker. The music is clearer at positions closer to the tweeter, but the bass is farther away and weaker. The sound is thicker at positions closer to the woofer. The same set of sound effect setting parameters will have different effects for multiple positions. In order to ensure that users can experience the best sound effects when sitting in any vehicle seat position, the sound effect parameters must correspond to the position and can be adjusted automatically.

[0039] Based on this, the technical solution of the embodiment of the present application is to obtain the audio parameter information pre-calibrated based on the best sound effect at the preset sitting position in the car, then detect the actual sitting position of the occupant in the car, and determine the sound effect parameter loss value according to the actual sitting position and the preset sitting position, and then determine the audio parameter compensation value according to the sound effect parameter loss value, and compensate and adjust the audio parameter information according to the audio parameter compensation value to obtain the target audio parameter, and finally control the car audio to play with the target audio parameter, so as to judge the situation of the occupant through the sensing sensor, control the car audio to switch different audio playback parameters, and thus improve the effect of the car audio playback. That is, in each riding scene, no matter how the user's sitting position changes, the car audio can be automatically and adaptively adjusted, so that passengers can enjoy the adjusted sound field and sound effect in each riding scene.

[0040] It is worth mentioning that the key protection point of the embodiment of the present application also includes debugging the sound effect at the preset sitting position in the car only once, and combining the preset other sitting positions with the audio attenuation algorithm of the preset sitting position to obtain the audio parameters of the best sound effect for all sitting positions, avoiding the need to debug at each sitting position, saving time and effort. If the method of debugging each position once is adopted, the number of parameter groups is related to the number of positions debugged, so that the user can only experience the best sound effect when sitting at the debugged position (i.e., the preset sitting position), and the technical solution of the embodiment of the present application can determine the sound effect parameter loss value based on the relative spatial position between the actual sitting position and the preset sitting position, determine the audio parameter compensation value based on the sound effect parameter loss value, and compensate and adjust the audio parameter information based on the audio parameter compensation value to obtain the target audio parameter, and then control the vehicle audio to play with the target audio parameter, so that the user can calculate the optimal sound effect parameter in real time at any sitting position, bringing the best audio experience to the user.

[0041] In one possible implementation, please refer to Figure 2 The step of determining the sound effect parameter loss value according to the actual sitting position and the preset sitting position comprises: Step S31, querying and obtaining a sound attenuation parameter between the actual seating position and the preset seating position from a pre-calibrated position mapping attenuation data table, wherein the sound attenuation parameter includes at least one of a propagation distance attenuation parameter and a physical barrier attenuation parameter; In this embodiment, the position mapping attenuation data table stores sound attenuation parameters mapped between a plurality of different actual seating positions and preset seating positions.

[0042] It should be noted that the position mapping attenuation data table can be calibrated in advance by those skilled in the art through multiple experimental tests.

[0043] Step S32, determining the sound effect parameter loss value according to the sound effect attenuation parameter obtained by querying.

[0044] It is known to those skilled in the art that the propagation of sound will cause the attenuation of sound signals as the distance increases. That is, the longer the sound propagation distance, the greater the sound attenuation parameter. Among them, the audio attenuation information corresponding to the sound attenuation parameter may include a propagation distance attenuation parameter and a physical barrier attenuation parameter. Therefore, the sound attenuation parameter between the actual sitting position and the preset sitting position can be determined according to the distance between the user's sitting position and the preset sitting position, and whether there is an obstruction (such as other seats that cause the propagation of sound to be blocked), and then the sound effect parameter loss value can be determined according to the sound effect attenuation parameter, so as to facilitate the subsequent determination of the audio parameter compensation value of the initial audio parameter of the vehicle audio according to the sound effect parameter loss value, so as to more accurately obtain the target audio parameters based on the best sound effect for each different sitting position, thereby ensuring that passengers can enjoy the adjusted sound field and sound effect in each riding scene.

[0045] In a possible implementation manner, the step of detecting the actual seating position of the occupant in the vehicle includes: Step B10, receiving a Bluetooth information packet or a WIFI (Wireless Fidelity) information packet sent by a vehicle-mounted AR device worn by a passenger in the vehicle; Step B20, based on the Bluetooth information packet, Bluetooth positioning is performed on the occupants in the vehicle to obtain the actual sitting position of the occupants in the vehicle; or, based on the WIFI information packet, WIFI positioning is performed on the occupants in the vehicle to obtain the actual sitting position of the occupants in the vehicle.

[0046] Specifically, based on the Bluetooth information packet, Bluetooth positioning is performed on the vehicle-mounted AR device worn by the vehicle occupant, and the actual sitting position of the vehicle occupant is determined based on the device position of the vehicle-mounted AR device obtained by Bluetooth positioning; or, based on the WIFI information packet, WIFI positioning is performed on the vehicle occupant, and the actual sitting position of the vehicle occupant is determined based on the device position of the vehicle-mounted AR device obtained by WIFI positioning.

[0047] In this embodiment, since in some riding scenarios, the occupants in the vehicle wear vehicle-mounted AR devices, the vehicle-mounted AR devices worn by the occupants in the vehicle can be positioned, and the actual sitting positions of the occupants in the vehicle can be accurately obtained based on the device positions of the vehicle-mounted AR devices obtained by positioning.

[0048] Embodiment 2 Based on the first embodiment of the present application, in another embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. On this basis, after the step of detecting the actual sitting position of the occupant in the vehicle, the method further includes: Step C10, determining whether the number of passengers in the vehicle is one according to the actual seating position; Step C20, if the number of passengers in the vehicle is one, execute: the step of determining the sound parameter loss value according to the actual sitting position and the preset sitting position.

[0049] Since the above embodiments are all aimed at improving the audio experience of a single target user in the car cabin, that is, since the above embodiments are only applicable to the single-person sound effect mode, when faced with the scenario where the audio experience of multiple target users in the car cabin needs to be satisfied at the same time, the above embodiments are no longer well applicable to the multi-person sound effect mode.

[0050] Based on this, the present application provides a possible implementation manner, after the step of determining whether the number of passengers in the vehicle is one, the method further includes: Step D10, if there are multiple passengers in the vehicle, then according to the seating distribution information corresponding to each actual seating position, call the sound effect mode mapped by the seating distribution information from the pre-stored sound effect mode mapping table; use the called sound effect mode as the target sound effect mode, and control the vehicle audio to play with the target sound effect mode, wherein the target sound effect mode is the front row sound effect mode, the rear row sound effect mode or the whole vehicle sound effect mode.

[0051] In this embodiment, when it is detected that there is only one passenger in the vehicle, the single-person sound effect mode is turned on and the following steps are performed: determining the sound effect parameter loss value according to the actual seating position and the preset seating position. When it is detected that there are multiple passengers in the vehicle, for example, when there are passengers in both the co-pilot seat and the main driver's seat, the sound effect mode mapped by the seating position information is called the front row sound effect mode. At this time, the calibrated best sound effect position for the human ear corresponding to the front row sound effect mode can be the middle position of the front row, so that the front row passengers can enjoy the best adjusted sound field and sound effects as much as possible. When it is detected that there are passengers in the back row seats, the calibrated best sound effect position for the human ear corresponding to the back row sound effect mode can be the middle position of the back row, so that the back row passengers can enjoy the best adjusted sound field and sound effects as much as possible. Alternatively, when it is detected that there are passengers in all the vehicle seats, the calibrated best sound effect position for the human ear corresponding to the full vehicle sound effect mode can be the center of the cabin, so that all the vehicle passengers can enjoy the best adjusted sound field and sound effects as much as possible. In this embodiment, when it is determined that there are multiple passengers in the vehicle, based on the seating position information, the sound effect mode mapped to the seating position information is called from a pre-stored sound effect mode mapping table, the called sound effect mode is used as the target sound effect mode, and the vehicle audio is controlled to play with the target sound effect mode, wherein the target sound effect mode is the front row sound effect mode, the rear row sound effect mode or the whole vehicle sound effect mode, thereby satisfying the audio experience of multiple target users in the vehicle cabin at the same time. In each riding scenario, no matter how the seating positions of multiple users in the vehicle change, the vehicle audio can be automatically and adaptively adjusted, and the playback device can be controlled to switch to different sound effect modes, so that each passenger can enjoy the well-tuned sound field and sound effects in each riding scenario.

[0052] In an practicable manner, after the step of determining whether the number of passengers in the vehicle is one, the method further includes: Step E10, if there are multiple passengers in the vehicle, obtaining the physical characteristic information registered and inputted corresponding to each seat, wherein the physical characteristic information includes height and body proportion; Step E20, detecting seat adjustment information corresponding to each seat in the vehicle, wherein the seat adjustment information includes a seat back angle and a seat height; Step E30, determining the user ear position corresponding to each occupant in the vehicle according to the seat adjustment information, the body characteristic information, and the seating distribution information corresponding to each actual seating position; In one example, when the camera and / or seat sensor recognizes that there is a human body in the current seat, a preset guidance interface can be output to guide the user to input body feature information. The user can input his or her own body feature information, such as height and body proportions, based on the preset guidance interface, so as to facilitate the subsequent accurate determination of the user's ear position corresponding to the occupant in the car based on the body feature information and the seat position of the user in the car (i.e., the sitting position information).

[0053] In another example, since the driver often sits in the driver's seat, the boss usually sits in the right rear seat, or the wife usually sits in the front passenger seat, that is, a specific seat position is usually occupied by a fixed person. For this riding scenario, the physical feature information of the regular seater can be registered and input for each seat of the vehicle in advance. Each subsequent time the user sits in the specific seat, there is no need to register again. The ear position of the user can be directly identified based on the pre-registered physical feature information and the specific seat position of the user.

[0054] After step E30, step E40 is executed to obtain the target audio parameters mapped to the user's ear position from a preset mapping table, and control the vehicle audio system to play with the target audio parameters.

[0055] It is easy to understand that since the position of the speakers in the car (i.e., the car audio system) is fixed, different user ear positions often result in different information about the barriers between the ear and the speaker (there may be barriers, such as other vehicle seats, or there may not be barriers, such as there are often no barriers between seats in the same row), the relative distance between the ear and the speaker, and the sound pickup angle between the ear and the speaker. Therefore, different user ear positions often map different target audio parameters.

[0056] In this embodiment, the target audio parameters mapped to the user's ear position can be obtained by querying the preset mapping table, wherein the sound effect parameter mapping table stores a plurality of different user ear positions and target audio parameters mapped one by one to each user ear position.

[0057] It should be noted that the preset mapping table can be calibrated by a person skilled in the art through multiple experimental tests in advance. In one example, the experimental test can be to adjust the passenger's sitting position, sitting posture, seat height and seat inclination, etc., so that the passenger's ears are distributed in different spatial positions in the car, and then when the passenger's ear position (i.e., human ear position) is distributed in different spatial positions in the car, the audio parameters of the car audio are debugged respectively to make the sound effect heard by each ear position the best, and the audio parameters corresponding to each ear position debugged based on the best sound effect, i.e., the audio parameters mapped to each user's ear position, are then statistically analyzed in a graphical form to obtain the preset mapping table.

[0058] Since different people have different heights and body proportions, the ear positions of different people sitting on the same vehicle seat are often different. Therefore, it is often not accurate to identify the ear position of the occupant in the vehicle based solely on the user's actual sitting position (i.e., which seat the user is sitting in). Even if the same person sits on the same vehicle seat, the ear position will be different due to different sitting postures.

[0059] Based on this, this embodiment detects the seat adjustment information corresponding to each seat in the car, wherein the seat adjustment information includes the seat back angle and the seat height; and determines the sitting posture of the user on the current seat according to the seat adjustment information, such as whether sitting upright, lying flat or sitting diagonally (when the sitting posture is sitting diagonally, the angle information of the diagonal sitting is also determined by the seat adjustment information), etc., so as to facilitate the identification of the user's ear position of the occupant in the car based on the user's actual sitting position and body feature information, combined with the detection of the user's sitting posture, thereby further improving the accuracy of identifying the user's ear position.

[0060] In order to help understand the technical concept or technical principle of the present application, a specific embodiment is listed: In this specific embodiment, the AR (Augmented Reality) glasses are wirelessly connected to the vehicle computer, and the sound effect debugging application app has been installed.

[0061] First, define the sound effect parameter expression: The sound effect parameter expression is ,in is the dB (decibel) value of the speaker's low frequency, is the dB value of the speaker's high frequency. Here, the simplest model is taken as an example. The parameters of the complex model sound effect parameter expression can be greater than or equal to three. The algorithm of this specific embodiment can be reused; (1) Debug the sound effects at the main driver's seat: Debug the sound effects at the main driver's seat and obtain the sound effect parameters , the position coordinate system in the vehicle is established with the position of the vehicle computer as the origin, and the main driving position is used as the calibration base point. The position parameter is recorded as ; (2) Debug the co-pilot seat sound effects: Debug the sound effects in the co-pilot seat and obtain the sound effect parameters , the position parameter is recorded as ; (3) Debug the sound effect on the left side of the back row: Debug the sound effect on the left side of the back row and obtain the sound effect parameters , the position parameter is recorded as ; Sound effect factor calculation: There are two media between the speaker and the user in the car: air and seats, which will cause different attenuation of high-frequency and low-frequency sounds respectively. Therefore, these four sound effect factors are calculated. , , and , so as to automatically obtain the sound effect parameters.

[0062] 1) Assume that the seat has uniform thickness and the thickness value is H; 2) Based on the sound effect parameters and position parameters obtained from (1), (2) and (3), the following equation (1) can be obtained: (one) Among them, the above two equations are obtained from the parameters of the main driver and co-driver seats. There is only air between the two seats, so the difference in sound parameters is only related to the air and the distance between the two seats; the following two equations are obtained from the parameters of the main driver and the left rear seat. There are two media, seats and air, between the two seats, so the sound parameters are affected by the air, seats (i.e. barriers) and the distance between the two seats.

[0063] 3) Simplifying (I) can get the values ​​of four sound effect factors: (two) Initial debugging by users: After getting the glasses, users only need to perform initial debugging in the main driving seat to obtain the sound effect parameters. and positional parameters ; Position determination during normal use of the user: Bluetooth or WiFi networking can be used to form a local area network in the car. There are many existing Bluetooth positioning and WiFi positioning algorithms, which can easily obtain the user's position parameters when wearing AR glasses. ; User seating area determination: By comparing the user's location parameters with the distance from the vehicle computer to the front seat, it can be roughly determined whether the user is sitting in the front or back seat; Then, the sound effect parameters are automatically calculated later: if the user is sitting in the front row, the user position parameter Substitute into formula (3). If you are sitting in the back row, substitute into formula (4); (three) (Four) AR glasses calculate the sound parameters (i.e. current audio parameters) in real time according to their own position and send them to the car computer. The car computer controls the high and low frequency decibel values ​​to change the sound effects.

[0064] This specific embodiment aims to improve the user experience of wearing AR glasses. When the user wears AR glasses and sits in the car, he can experience the best sound effect without opening the car sound equalizer and spending time and energy to adjust it. When this function is applied in the service industry, such as private car pick-up, it can bring a more comfortable experience to passengers.

[0065] It should be noted that the many details described in this specific embodiment are only helpful for understanding the technical concept of the present application and do not constitute a limitation of the present application. More simple transformations based on the technical concept of the present application should all be within the scope of protection of the present application.

[0066] Embodiment 3 The embodiment of the present invention also provides a vehicle-mounted sound effect automatic adjustment device, please refer to Figure 3 , the vehicle-mounted sound effect automatic adjustment device comprises: An acquisition module 10 is used to acquire audio parameter information pre-calibrated based on optimal sound effects at a preset seating position in the vehicle; A determination module 20, for detecting an actual seating position of an occupant in the vehicle, and determining a sound effect parameter loss value according to the actual seating position and the preset seating position; A compensation module 30, configured to determine an audio parameter compensation value according to the sound effect parameter loss value, and to compensate and adjust the audio parameter information according to the audio parameter compensation value to obtain a target audio parameter; The control module 40 is used to control the vehicle audio system to play the target audio parameters.

[0067] The vehicle-mounted sound effect automatic adjustment device provided in the embodiment of the present invention adopts the vehicle-mounted sound effect automatic adjustment method in the above-mentioned embodiment 1 or embodiment 2, which can solve the technical problem of how to automatically and adaptively adjust the vehicle-mounted audio system, so that every passenger can enjoy the adjusted sound field and sound effects in the riding scene. Compared with the prior art, the beneficial effects of the vehicle-mounted sound effect automatic adjustment device provided in the embodiment of the present invention are the same as the beneficial effects of the vehicle-mounted sound effect automatic adjustment method provided in the above-mentioned embodiment, and the other technical features of the vehicle-mounted sound effect automatic adjustment device are the same as the features disclosed in the above-mentioned embodiment method, which will not be repeated here.

[0068] Embodiment 4 An embodiment of the present invention provides an automatic vehicle sound effect adjustment device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the automatic vehicle sound effect adjustment method in the above-mentioned embodiment one.

[0069] Reference below Figure 4 , which shows a schematic diagram of the structure of a vehicle-mounted sound effect automatic adjustment device suitable for implementing the embodiment of the present disclosure. The vehicle-mounted sound effect automatic adjustment device in the embodiment of the present disclosure includes but is not limited to mixed reality (MixedReality) - MR devices (such as MR glasses or MR helmets), augmented reality (AugmentedReality) - AR devices (such as AR glasses or AR helmets), extended reality (ExtendedReality) - XR devices or some combination thereof, etc. near-eye display devices. Figure 4 The vehicle-mounted sound effect automatic adjustment device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0070] like Figure 4As shown, the vehicle-mounted sound effect automatic adjustment device may include a processing device 1001 (such as a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM1002) or a program loaded from a storage device into a random access memory (RAM1004). Various programs and data required for the operation of the vehicle-mounted sound effect automatic adjustment device are also stored in RAM1004. The processing device 1001, ROM1002 and RAM1004 are connected to each other via a bus 1005. An input / output (I / O) interface is also connected to the bus 1005.

[0071] Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the vehicle-mounted sound effect automatic adjustment device to communicate wirelessly or wired with other devices to exchange data. Although the figure shows a vehicle-mounted sound effect automatic adjustment device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0072] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment of the present disclosure are executed.

[0073] The vehicle-mounted sound effect automatic adjustment device provided by the present invention adopts the vehicle-mounted sound effect automatic adjustment method in the above embodiment, which can solve the technical problem of how to automatically and adaptively adjust the vehicle-mounted audio system, so that every passenger can enjoy the adjusted sound field and sound effects in the riding scene. Compared with the prior art, the beneficial effects of the vehicle-mounted sound effect automatic adjustment device provided by the embodiment of the present invention are the same as the beneficial effects of the vehicle-mounted sound effect automatic adjustment method provided by the above embodiment, and the other technical features of the vehicle-mounted sound effect automatic adjustment device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0074] It should be understood that the various parts of the present disclosure can be implemented with hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0075] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

[0076] Embodiment 5 An embodiment of the present invention provides a computer-readable storage medium having computer-readable program instructions stored thereon, and the computer-readable program instructions are used to execute the method for automatically adjusting the vehicle-mounted sound effects in the above embodiment.

[0077] The computer-readable storage medium provided in the embodiment of the present invention may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination thereof.

[0078] The computer-readable storage medium may be included in the vehicle-mounted automatic sound effect adjustment device; or may exist independently without being assembled into the vehicle-mounted automatic sound effect adjustment device.

[0079] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the vehicle-mounted sound effect automatic adjustment device, the vehicle-mounted sound effect automatic adjustment device: obtains audio parameter information pre-calibrated based on optimal sound effects at a preset sitting position in the vehicle; detects the actual sitting position of the occupant in the vehicle, and determines the sound effect parameter loss value based on the actual sitting position and the preset sitting position; determines the audio parameter compensation value based on the sound effect parameter loss value, and compensates and adjusts the audio parameter information based on the audio parameter compensation value to obtain the target audio parameters; and controls the vehicle-mounted audio to play with the target audio parameters.

[0080] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0081] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present invention. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0082] The modules involved in the embodiments described in the present disclosure may be implemented by software or hardware, wherein the name of the module does not limit the unit itself in some cases.

[0083] The computer-readable storage medium provided by the present invention stores computer-readable program instructions for executing the above-mentioned method for automatically adjusting the vehicle-mounted sound effects, which can solve the technical problem of how to automatically and adaptively adjust the vehicle-mounted audio system, so that every passenger can enjoy the adjusted sound field and sound effects in the vehicle riding scene. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the embodiment of the present invention are the same as the beneficial effects of the method for automatically adjusting the vehicle-mounted sound effects provided by the above-mentioned embodiment 1 or embodiment 2, and will not be repeated here.

[0084] Embodiment 6 An embodiment of the present invention further provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for automatically adjusting vehicle-mounted sound effects.

[0085] The computer program product provided by the present application can solve the technical problem of how to automatically and adaptively adjust the vehicle audio system, so that passengers can enjoy the adjusted sound field and sound effects every time they are in the vehicle. Compared with the prior art, the beneficial effects of the computer program product provided by the embodiment of the present invention are the same as the beneficial effects of the vehicle audio automatic adjustment method provided by the above-mentioned embodiment 1 or embodiment 2, and will not be described in detail here.

[0086] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A method for automatically adjusting vehicle sound effects, characterized in that: include: Obtaining audio parameter information pre-calibrated based on optimal sound effects at a preset seating position in the vehicle; Detecting an actual sitting position of an occupant in the vehicle, and determining a sound effect parameter loss value according to the actual sitting position and the preset sitting position; Determining an audio parameter compensation value according to the sound effect parameter loss value, and performing compensation adjustment on the audio parameter information according to the audio parameter compensation value to obtain a target audio parameter; The vehicle audio system is controlled to play the target audio parameters.

2. The method for automatically adjusting vehicle sound effects as claimed in claim 1, characterized in that: The step of determining the sound effect parameter loss value according to the actual sitting position and the preset sitting position comprises: Querying and obtaining a sound attenuation parameter between the actual seating position and the preset seating position from a pre-calibrated position mapping attenuation data table, wherein the sound attenuation parameter includes at least one of a propagation distance attenuation parameter and a physical barrier attenuation parameter; The sound effect parameter loss value is determined according to the sound effect attenuation parameter obtained by the query.

3. The method for automatically adjusting vehicle sound effects as claimed in claim 2, characterized in that: The sound effect parameter loss value includes an audio phase loss value and an audio amplitude loss value, and the step of determining the audio parameter compensation value according to the sound effect parameter loss value includes: An audio phase compensation value of the audio parameter information is determined according to the audio phase loss value, and an audio amplitude compensation value of the audio parameter information is determined according to the audio amplitude loss value.

4. The method for automatically adjusting vehicle sound effects as claimed in claim 1, characterized in that: The step of detecting the actual seating position of the occupant in the vehicle comprises: Receive Bluetooth information packets or WIFI information packets sent by the vehicle-mounted AR device worn by the passengers in the vehicle; According to the Bluetooth information packet, the vehicle occupants are positioned by Bluetooth to obtain the actual sitting position of the vehicle occupants; or, according to the WIFI information packet, the vehicle occupants are positioned by WIFI to obtain the actual sitting position of the vehicle occupants.

5. The method for automatically adjusting vehicle sound effects as claimed in claim 1, characterized in that: After the step of detecting the actual seating position of the occupant in the vehicle, the method further comprises: Determining whether the number of passengers in the vehicle is one according to the actual seating position; If the number of passengers in the vehicle is one, the step of determining the sound parameter loss value according to the actual sitting position and the preset sitting position is performed.

6. The method for automatically adjusting vehicle sound effects as claimed in claim 5, characterized in that: After the step of determining whether the number of passengers in the vehicle is one, the method further includes: If there are multiple passengers in the vehicle, the sound effect mode mapped by the seating distribution information is called from a pre-stored sound effect mode mapping table according to the seating distribution information corresponding to each actual seating position; the called sound effect mode is used as the target sound effect mode, and the vehicle audio is controlled to play with the target sound effect mode, wherein the target sound effect mode is the front row sound effect mode, the rear row sound effect mode or the whole vehicle sound effect mode.

7. The method for automatically adjusting vehicle sound effects as claimed in claim 5, characterized in that: After the step of determining whether the number of passengers in the vehicle is one, the method further includes: If there are multiple passengers in the vehicle, then obtaining the physical characteristic information corresponding to the registration input of each seat, wherein the physical characteristic information includes height and body proportion; Detecting seat adjustment information corresponding to each seat in the vehicle, wherein the seat adjustment information includes a seat back angle and a seat height; Determining the user ear position corresponding to each occupant in the vehicle according to the seat adjustment information, the body feature information, and the seating distribution information corresponding to each actual seating position; The target audio parameters mapped to the user's ear position are obtained by querying from a preset mapping table, and the vehicle audio system is controlled to play with the target audio parameters.

8. An automatic vehicle sound effect adjustment device, characterized in that: include: An acquisition module, used to acquire audio parameter information pre-calibrated based on optimal sound effects at a preset seating position in the vehicle; A determination module, used for detecting an actual sitting position of an occupant in the vehicle, and determining a sound effect parameter loss value according to the actual sitting position and the preset sitting position; A compensation module, used to determine an audio parameter compensation value according to the sound effect parameter loss value, and to compensate and adjust the audio parameter information according to the audio parameter compensation value to obtain a target audio parameter; The control module is used to control the vehicle audio system to play the target audio parameters.

9. An automatic vehicle sound effect adjustment device, characterized in that: The vehicle-mounted sound effect automatic adjustment device comprises: at least one processor; and, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the steps of the method for automatically adjusting the in-vehicle sound effects as described in any one of claims 1 to 7.

10. A readable storage medium, characterized in that: The readable storage medium is a computer-readable storage medium, on which is stored a program for implementing a method for automatically adjusting vehicle-mounted sound effects. The program for implementing a method for automatically adjusting vehicle-mounted sound effects is executed by a processor to implement the steps of the method for automatically adjusting vehicle-mounted sound effects as described in any one of claims 1 to 7.

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