In-vehicle sound field parameter adjusting method, computer readable storage medium and vehicle
By acquiring the location information of the display device in real time and dynamically adjusting the sound field parameters, the problems of abrupt sound switching and mismatch between the sound field and the screen position during the movement of the in-vehicle display device are solved, achieving close tracking between sound and picture, and enhancing the user's immersion and auditory experience.
Patent Information
- Application Number
- CN202511933038.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-19
- Publication Date
- 2026-02-10
AI Technical Summary
During the movement of the in-vehicle display device, the sound switching is abrupt and the sound field does not match the screen position, resulting in loud noise nearby and unclear sound at a distance.
By acquiring the location information of the display device in real time, the sound field parameters, including speaker volume, audio delay, and equalizer frequency, are dynamically adjusted to ensure that the sound closely follows the picture and achieves a smooth transition.
It provides a highly immersive viewing experience, avoids abrupt sound and auditory discomfort, and enhances the user experience.
Smart Images
Figure CN121509871A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle control technology, and in particular to a method for adjusting in-vehicle sound field parameters, a computer-readable storage medium, and a vehicle. Background Technology
[0002] When users move the ceiling-mounted screen according to their needs, the following problems occur: First, the sound field is fragmented; a single audio source switch causes a sudden "jump" in sound, with the front row sound completely disappearing and the rear row sound suddenly turning on, lacking a smooth transition and resulting in a poor user experience. Second, cross-interference is ignored; the impact on passengers in non-target areas during the adjustment process is not considered. For example, if the volume in the rear row is too loud when the screen is moved to the back, it will disturb passengers in the front row who are resting or talking (i.e., the "ear-shaking" problem); conversely, if the volume is too low, rear users may not be able to hear clearly. Summary of the Invention
[0003] In view of this, embodiments of this application aim to provide a method for adjusting in-vehicle sound field parameters, a computer-readable storage medium, and a vehicle, which can dynamically adjust the sound field parameters according to the current position of the display device, so that the sound and the picture closely follow each other, providing users with a highly immersive viewing experience, and solving the problems of abrupt sound switching, mismatch between the sound field and the screen position, and uncomfortable listening (deafeningly loud at close range, inaudible at a distance) during the movement of the display device.
[0004] To achieve the above objectives, the first aspect of this application proposes a method for adjusting in-vehicle sound field parameters, wherein a movable display device is installed inside the vehicle. The method includes: acquiring the current position information of the display device; determining a target sound field influence area based on the current position information of the display device; and determining sound field parameters based on at least one of the distances between all speakers within the target sound field influence area and the center point of the target sound field influence area, speaker position information, and the current position information of the display device.
[0005] According to the in-vehicle sound field parameter adjustment method of this application embodiment, the current position information of the display device is obtained, and the target sound field influence area is determined based on the current position information of the display device. Furthermore, sound field parameters are determined based on at least one of the following: the distance between all speakers within the target sound field influence area and the center point of the target sound field influence area, the speaker position information, and the current position information of the display device. Therefore, this method can dynamically adjust the sound field parameters according to the current position of the display device, ensuring that the sound and image closely follow each other, providing users with a highly immersive viewing experience, and solving problems such as abrupt sound switching, mismatch between the sound field and screen position, and auditory discomfort (deafeningly loud at close range, inaudible at a distance) during the movement of the display device.
[0006] In addition, the method for adjusting the in-vehicle sound field parameters according to the above embodiments of this application may also have the following additional technical features: In some embodiments of this application, the sound field parameters include the volume value of the loudspeakers. The sound field parameters are determined based on the distances between all loudspeakers within the target sound field influence area and the center point of the target sound field influence area, and the position information of the loudspeakers. This includes: obtaining the distance between each loudspeaker within the target sound field influence area and the center point; determining the volume attenuation coefficient of the corresponding loudspeaker based on the distance and the position information of the loudspeaker; and determining the target volume value of the loudspeaker based on the volume attenuation coefficient and the current volume value of the loudspeaker. The distance and the volume attenuation coefficient are positively correlated.
[0007] In some embodiments of this application, the sound field parameters include the audio playback time of the loudspeakers. The sound field parameters are determined based on the distance between all loudspeakers in the target sound field influence area and the center point of the target sound field influence area, including: determining the audio delay of the corresponding loudspeaker based on the distance; and determining the audio playback time of the loudspeaker based on the audio delay; wherein, the distance and the audio delay are negatively correlated.
[0008] In some embodiments of this application, after determining the target volume value of the speaker based on the volume attenuation coefficient and the current volume value of the speaker, the above method further includes: adjusting the current volume value of the speaker to the target volume value at a first preset time according to a first preset speed within a first preset time; or adjusting the current volume value of the speaker to an intermediate volume value at a second preset speed within a second preset time, and adjusting the intermediate volume value of the speaker to the target volume value at a third preset speed within a third preset time, wherein the first preset time is the sum of the second preset time and the third preset time.
[0009] In some embodiments of this application, the sound field parameters include the frequency of the equalizer. Determining the sound field parameters based on the current position information of the display device includes: determining the movement direction of the display device based on the current position information and the previous position information; and determining the frequency of the equalizer based on the movement direction of the display device.
[0010] In some embodiments of this application, determining the frequency of the equalizer based on the movement direction of the display device includes: when the movement direction of the display device is vertical, acquiring the target equalizer in the region opposite to the movement direction and increasing the frequency of the target equalizer; when the movement direction of the display device is horizontal, keeping the frequency of the equalizer unchanged.
[0011] In some embodiments of this application, increasing the frequency of the target equalizer includes: increasing the frequency of the target equalizer at a fourth preset speed within a fourth preset time period.
[0012] In some embodiments of this application, the above-described method for adjusting in-vehicle sound field parameters further includes: acquiring the playback content of the display device, determining a frequency correction coefficient based on the playback content, and correcting the frequency of the target equalizer based on the frequency correction coefficient.
[0013] To achieve the above objectives, a second aspect of this application provides a computer-readable storage medium storing a program that, when executed by a processor, implements the above-described method for adjusting in-vehicle sound field parameters.
[0014] According to the computer-readable storage medium of the present application embodiment, by implementing the above-described method for adjusting the in-vehicle sound field parameters during execution, the sound field parameters can be dynamically adjusted according to the current position of the display device, so that the sound and the picture closely follow each other, providing users with a highly immersive viewing experience, and solving the problems of abrupt sound switching, mismatch between the sound field and the screen position, and uncomfortable listening (deafeningly loud at close range, inaudible at a distance) during the movement of the display device.
[0015] To achieve the above objectives, a third aspect of this application provides a vehicle including a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the above-described method for adjusting the in-vehicle sound field parameters.
[0016] According to the vehicle of the present application embodiment, by executing the above-described method for adjusting the in-vehicle sound field parameters, the sound field parameters can be dynamically adjusted according to the current position of the display device, so that the sound and the picture closely follow each other, providing users with a highly immersive viewing experience, and solving the problems of abrupt sound switching, mismatch between the sound field and the screen position, and uncomfortable listening (deafening sound at close range, unclear sound at a distance) during the movement of the display device.
[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0018] Figure 1 This is a flowchart of a method for adjusting in-vehicle sound field parameters according to an embodiment of this application.
[0019] Figure 2 This is a schematic diagram of an in-vehicle speaker according to some embodiments of this application.
[0020] Figure 3 This is a block diagram of a vehicle according to some embodiments of this application. Detailed Implementation
[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0022] As an important entertainment device for rear passengers, the movable ceiling-mounted screen's installation position is no longer fixed. Instead, it can be adjusted in multiple directions—front-to-back, left-to-right—to obtain the best viewing angle according to passenger needs. However, existing car audio systems are usually statically configured, with preset speaker sound field and volume parameters, such as "driver priority" or "rear priority."
[0023] When the ceiling-mounted screen moves, the following problems occur: First, the sound field is disrupted; a single audio source switch causes a sudden "jump" in sound, with the front row sound completely disappearing and the rear row sound abruptly turning on, lacking a smooth transition and resulting in a poor user experience. Second, cross-interference is ignored; the impact on passengers in non-target areas during the adjustment process is not considered. For example, if the volume in the rear row is too loud when the screen is moved to the rear, it will disturb passengers in the front row who are resting or talking (i.e., the "ear-shaking" problem); conversely, if the volume is too low, rear users may not be able to hear clearly.
[0024] In related technologies, manually switching audio zones via an in-vehicle screen is a static, manual control method that lacks automatic dynamic adjustment linked to the screen's physical position. Another solution involves a system that tracks and selects the audio source based on the passenger's position and head position, but its core function is to identify the "person's" position, not the "screen's" position. Regardless of the specific technology, all suffer from abrupt sound switching, a mismatch between the sound field and the screen's position, and an uncomfortable listening experience during the movement of the movable ceiling-mounted screen.
[0025] To address the aforementioned issues, this application responds in real time to changes in the position of the display device and dynamically adjusts the in-vehicle sound field parameters based on these changes, ensuring that the sound and image closely follow each other, thus providing users with a highly immersive viewing experience.
[0026] The following description, with reference to the accompanying drawings, outlines a method for adjusting in-vehicle sound field parameters, a computer-readable storage medium, and a vehicle according to embodiments of this application.
[0027] Figure 1 This is a flowchart of a method for adjusting in-vehicle sound field parameters according to some embodiments of this application.
[0028] In some embodiments of this application, a movable display device is installed inside the vehicle. This display device can be a movable ceiling-mounted screen. In-vehicle ceiling-mounted screens have become an important feature of new energy vehicles, supporting electric opening and closing and angle adjustment, providing a separate entertainment experience for rear passengers. In some embodiments, there can be one or more display devices; regardless of the number of display devices in the vehicle, the control logic is the same. In the following embodiments, a single display device is used as an example for illustration.
[0029] like Figure 1 As shown, the control method for the display device of a vehicle according to an embodiment of this application may include the following steps: S101, Obtain the current location information of the display device.
[0030] For example, the precise physical position coordinates of the display device can be obtained in real time by a high-precision displacement sensor (such as a Hall sensor) installed on the slide rail of the display device, denoted as (x, y), where x represents the front-back direction (vertical direction) and y represents the left-right direction (horizontal direction).
[0031] For example, a rotary encoder installed on the drive motor can be used to obtain the precise physical position coordinates of the display device in real time, and the position of the display device can be indirectly calculated based on the measured motor rotation angle.
[0032] For example, a linear encoder installed on the slide rail of the display device can be used to obtain the precise physical position coordinates of the display device in real time, and the linear displacement can be measured by a code ruler and a reading head.
[0033] S102, determine the target sound field influence area based on the current location information of the display device.
[0034] Specifically, based on the current location information of the display device, a target sound field center point P is mapped to the inside of the vehicle, and a sound field influence area centered on the target sound field center point P is defined. This area can be a circle / ellipse or a custom-shaped area, and the speakers within this sound field influence area will be affected.
[0035] For example, mapping the physical location coordinates (x, y) of the display device to a virtual target sound field center is a process combining acoustic and psychoacoustic models. Using the physical location coordinates of the display device as the "visual focus," a set of optimal speaker gain, delay, and frequency parameters are calculated within the complex acoustic environment of the vehicle, ensuring that the "sound image center" in the auditory perception of all passengers (or the target passenger) spatially matches or approaches the visual focus. The azimuth of the target sound field center point P is typically strongly correlated with the direction of the line connecting the center of the display device to the main listening area; if the display screen faces the rear row, the azimuth of P is directly in front. The perceived depth is dynamically adjusted based on the y-coordinate of the display device, ensuring that the sensor is neither completely pressed against the display device nor too far away.
[0036] S103, determine the sound field parameters based on at least one of the following: the distance between all loudspeakers in the target sound field influence area and the center point of the target sound field influence area, the position information of the loudspeakers, and the current position information of the display device.
[0037] Specifically, the system obtains the distances between all speakers within the target sound field's influence area and the center point, as well as the position information of each speaker within that area. Based on this distance and position information, the volume adjustment value for each speaker can be determined. For example, when the distance between a speaker and the center point is small, it indicates that the speaker needs to be louder; when the distance is large, it indicates that the speaker needs to be quieter. As the display device moves from front to back, the sound of the speakers in the front row gradually decreases along the direction of movement away from the display device, while the sound of the speakers in the rear row gradually increases along the direction of movement.
[0038] For example, when the sound field parameters include speaker volume, a displacement sensor mounted on the ceiling-mounted screen's sliding rail continuously reports the current physical position coordinates of the display device as (x1, y1), indicating that it is moving backward. Based on the current position information of the display device, the target sound field center point P1 is determined, and the sound field influence area corresponding to the center point P1 is also determined. Based on the distance of each speaker within this area from the center point P1 and the speaker's position, a weighting coefficient for the corresponding speaker is determined, and the corresponding volume value is determined based on the speaker's weighting coefficient. For example, when the distance is small and the speaker is in the direction of the display device's movement, the weighting coefficient for that speaker is large; conversely, when the distance is large and the speaker is in the direction of the display device's movement or the opposite direction, the weighting coefficient for that speaker is small; and furthermore, when the distance is small and the speaker is on the left or right side of the display device, the weighting coefficient for that speaker is moderate.
[0039] For example, when the sound field parameters include the frequency of the equalizer, the frequency of the equalizer in the corresponding area is determined based on the current position of the display device and the direction of movement of the display device. For instance, when the display device moves from front to back, the volume of the rear speaker gradually increases, while the volume of the front speaker gradually decreases. In this case, the frequency of the equalizer corresponding to the front speaker can be increased. By increasing the frequency of the equalizer, the clarity of the sound played by the front speaker can be improved.
[0040] Therefore, the in-vehicle sound field parameters are adjusted in real time according to the position of the display device, so that the sound and picture closely follow each other, avoiding the problem of the volume being too loud and deafening, or the volume being too soft and inaudible, and providing users with a highly immersive movie-watching experience.
[0041] In some embodiments of this application, the sound field parameters include the volume value of the loudspeakers. The sound field parameters are determined based on the distances between all loudspeakers within the target sound field influence area and the center point of the target sound field influence area, and the position information of the loudspeakers. This includes: obtaining the distance between each loudspeaker within the target sound field influence area and the center point; determining the volume attenuation coefficient of the corresponding loudspeaker based on the distance and the position information of the loudspeaker; and determining the target volume value of the loudspeaker based on the volume attenuation coefficient and the current volume value of the loudspeaker. The distance and the volume attenuation coefficient are positively correlated.
[0042] Specifically, the system acquires the current position information of the display device and determines the target sound field center point based on this information. Then, it defines the sound field influence area centered on this center point. The system obtains the distances between all speakers within this influence area and the center point. Based on these distances and the speaker positions, it determines the volume attenuation coefficient for each speaker. If the speaker is in the direction of movement of the display device, the attenuation coefficient increases with distance and decreases with distance. If the speaker is not in the direction of movement of the display device, the volume attenuation coefficient gradually increases from a set value as the distance increases. Finally, based on the speaker's original volume value and corresponding attenuation coefficient, the target volume value for that speaker is determined, and the speaker is controlled according to this target volume value.
[0043] For example, with Figure 2Taking this example, P is the center point of the target sound field, the elliptical region is the sound field influence area, and a, b, c, d, e, and f are the loudspeakers within the sound field influence area. L1 is the distance from loudspeaker a to the center point P, L2 is the distance from loudspeaker b to the center point P, L3 is the distance from loudspeaker c to the center point P, L4 is the distance from loudspeaker d to the center point P, L5 is the distance from loudspeaker e to the center point P, and L6 is the distance from loudspeaker f to the center point P. We are bounded that L5 < L4 < L2 < L6 < L3 < L1. At this point, loudspeaker e has the smallest attenuation coefficient and the largest target volume value; loudspeaker a has the largest attenuation coefficient and the smallest target volume value; the attenuation coefficient of loudspeaker c is greater than that of loudspeaker d; and the attenuation coefficient of loudspeaker d can be an intermediate value.
[0044] Therefore, the volume of the speakers is adjusted in real time according to the position of the display device, and the slope is gentle when the screen is close to the passenger to avoid the discomfort caused by the sudden increase in the volume of the overhead speakers when the screen is moved directly above the passenger.
[0045] In some embodiments of this application, after determining the target volume value of the speaker based on the volume attenuation coefficient and the speaker's current volume value, the method further includes: adjusting the speaker's current volume value to the target volume value at a first preset time and a first preset speed within a first preset time; or adjusting the speaker's current volume value to an intermediate volume value at a second preset speed within a second preset time, and adjusting the speaker's intermediate volume value to the target volume value at a third preset speed within a third preset time, wherein the first preset time is the sum of the second preset time and the third preset time. The first preset time, second preset time, third preset time, first preset speed, second preset speed, and third preset speed can be adjusted according to actual conditions.
[0046] Specifically, during the movement of the display device, the speaker volume changes smoothly rather than abruptly, avoiding any jarring auditory impact. Within a specified time, the speaker volume is adjusted uniformly at a certain speed until the target volume value is reached. Alternatively, the volume can be adjusted in segments within a fixed time period, with the adjustment speed gradually increasing or decreasing between adjacent segments.
[0047] For example, taking the smooth transition of a speaker's volume value from 30 dB to 60 dB within 30 milliseconds as an example, the implementation can be as follows: Within 30 milliseconds, the transition can be smoothed at 30 dB, 31 dB, 32 dB, ..., 60 dB. Alternatively, the transition can be smoothed at 30 dB, 30.5 dB, ..., 40 dB within the first 20 milliseconds, and then at 41 dB, 43 dB, ..., 60 dB within the next 10 milliseconds. Another possible implementation is a smooth transition at 30 dB, 30.5 dB, ..., 40 dB within the first 10 milliseconds, then at 40 dB, 41 dB, ..., 50 dB within the middle 10 milliseconds, and finally at 51 dB, 53 dB, ..., 60 dB within the next 10 milliseconds.
[0048] Therefore, by adjusting the sound smoothly, passengers inside the car feel that the center of the sound moves smoothly, avoiding the "jumping" feeling of the sound and enhancing the sense of luxury in the experience.
[0049] In some embodiments of this application, the sound field parameters include the audio playback time of the loudspeakers. The sound field parameters are determined based on the distance between all loudspeakers in the target sound field influence area and the center point of the target sound field influence area, including: determining the audio delay of the corresponding loudspeaker based on the distance; and determining the audio playback time of the loudspeaker based on the audio delay; wherein, the distance and the audio delay are negatively correlated.
[0050] Specifically, since sound travels at 340 meters per second in air, it takes approximately 2.94 milliseconds (1 / 340 ≈ 0.00294 s) for sound to travel 1 meter. Therefore, a 1-millisecond delay corresponds to a propagation distance of approximately 0.34 meters (340 / 1000 = 0.34 m). When a display device plays audio, the sound from different speakers reaches the ear at different times, which disrupts sound image localization. The brain mistakenly perceives the sound as coming from the nearest speaker, rather than the display device. Speakers farther away have longer sound propagation times, while those closer have shorter times. For near-field speakers, adding a few milliseconds of delay ensures that the sound from all speakers reaches the screen simultaneously, making the brain believe the sound originates from the display device. The audio delay of each speaker is determined by its distance from the center point; the closer the distance, the greater the audio delay, and vice versa. After determining the audio delay of each speaker, the final audio playback time of the speaker is determined by summing the original audio playback time of the speaker and the corresponding audio delay.
[0051] For example, with Figure 2Taking the example shown, L1 is the distance from speaker a to the center point P, L2 is the distance from speaker b to the center point P, L3 is the distance from speaker c to the center point P, L4 is the distance from speaker d to the center point P, L5 is the distance from speaker e to the center point P, and L6 is the distance from speaker f to the center point P, with L5 < L4 < L2 < L6 < L3 < L1. Therefore, the audio delays, in descending order, are: speaker e, speaker d, speaker b, speaker f, speaker c, and speaker a. Using the playback time of speaker a as a baseline, the audio delay of each speaker is determined based on its distance from speaker a. For example, if the audio playback time of speaker a remains constant, and the difference between the distance L5 from speaker e to the center point and the distance L1 from speaker a to the center point P is 1m, then the audio delay of speaker e is determined to be 2.94ms; the difference between the distance L4 from speaker d to the center point P and the distance L1 from speaker a to the center point P is 0.8m, then the audio delay of speaker d is determined to be 2.35ms; the difference between the distance L2 from speaker b to the center point and the distance L1 from speaker a to the center point P is 0.7m, then the audio delay of speaker b is determined to be 2.05ms; the difference between the distance L6 from speaker f to the center point and the distance L1 from speaker a to the center point P is 0.5m, then the audio delay of speaker f is determined to be 1.47ms; and the difference between the distance L3 from speaker c to the center point and the distance L1 from speaker a to the center point P is 0.3m, then the audio delay of speaker c is determined to be 0.88ms.
[0052] Therefore, when there is a time difference between the sounds emitted by different speakers, the human ear perceives the sound image as biased towards the direction of the sound source that arrives first. By applying an audio delay to speakers that are close together, this time difference can be artificially created, thereby achieving precise localization of the sound field. This allows the sound emitted by all speakers to arrive at the screen position simultaneously, making the brain believe that the sound is coming from the display device. This strengthens the sense of location of the sound source from the display device, enhances the focus and layering of the sound, and creates a more realistic and three-dimensional auditory experience.
[0053] In some embodiments of this application, the sound field parameters include the frequency of the equalizer. Determining the sound field parameters based on the current position information of the display device includes: determining the movement direction of the display device based on the current position information and the previous position information; and determining the frequency of the equalizer based on the movement direction of the display device.
[0054] Specifically, a vehicle interior typically includes multiple sound zones. Through beamforming and sound field control algorithms, independent audio playback can be achieved in different sound zones within the vehicle, allowing each passenger to have a completely independent listening space. When the display device moves, the sound field center also moves. Passengers moving in the opposite direction to the display device will noticeably perceive the sound (especially key dialogue) as becoming distant, blurry, and lacking detail. Therefore, this application determines the direction of movement of the display device based on its current and previous position information, identifies areas away from the display device based on the direction of movement, and adjusts the frequency of the equalizer within those areas.
[0055] For example, when the display device moves from the front row to the back row, the area that needs adjustment is determined to be the front row, and the frequency of the equalizer corresponding to the front row is adjusted; similarly, when the display device moves from the back row to the front row, the area that needs adjustment is determined to be the back row, and the frequency of the equalizer corresponding to the back row is adjusted.
[0056] Therefore, based on the location information of the display device, the sound field balance is adjusted, and the frequency of the equalizer in the area far away from the display device is adjusted so that passengers in that area can still hear the sound clearly without feeling noisy. Without significantly affecting the background music and low-frequency effects, the dialogue sounds more intimate and clearer.
[0057] In some embodiments of this application, determining the frequency of the equalizer based on the movement direction of the display device includes: when the movement direction of the display device is vertical, acquiring the target equalizer in the region opposite to the movement direction and increasing the frequency of the target equalizer; when the movement direction of the display device is horizontal, keeping the frequency of the equalizer unchanged.
[0058] Specifically, after determining the direction of movement of the display device, the area requiring adjustment can be identified, and the frequency of the equalizer corresponding to that area can be adjusted. When the display device moves vertically, i.e., from the front row to the back row, or from the back row to the front row, the target equalizer for the speakers in the opposite area can be identified, and its frequency can be increased, for example, to the mid-high frequency range (e.g., 2kHz-4kHz). Mid-high frequencies are highly directional and have shorter wavelengths, making them easily blocked and absorbed by obstacles; this is the frequency band where the human ear is most sensitive to speech intelligibility. When the display device moves horizontally, i.e., from left to right, or from right to left, the equalizer frequency remains unchanged. It should be noted that when the display device moves from the right side of the front row to the left side of the back row, the equalizer frequency should be adjusted by first moving horizontally, then vertically, and then horizontally again. Alternatively, the method of adjusting the equalizer frequency can be determined based on the installation method of the display device's sliding rails; this is not limited here.
[0059] Therefore, by adjusting the equalizer frequency to mid-high frequencies when the display device moves back and forth, and under the premise that the center of gravity of the sound field moves with the movement of the display device, the problem of reduced clarity caused by high-frequency directivity attenuation is solved through precise, localized frequency compensation based on physical acoustic characteristics, thus achieving a balanced listening experience throughout the vehicle with "immersive rear seats and clear front seats" or "immersive front seats and clear rear seats".
[0060] In some embodiments of this application, increasing the frequency of the target equalizer includes: increasing the frequency of the target equalizer at a fourth preset speed within a fourth preset time period. The fourth preset time and the fourth preset speed can be calibrated according to actual conditions.
[0061] Specifically, during the movement of the display device, the frequency change of the equalizer is not abrupt but a smooth transition, allowing the sound changes to flow naturally and avoiding any abruptness in hearing. Within a specified time, the equalizer frequency is adjusted uniformly at a certain speed until the set frequency is reached. For example, taking the display device as moving from the front row to the back row, the frequency of the equalizer corresponding to the front row speakers is uniformly increased by 2kHz-4kHz at a certain speed.
[0062] Therefore, by adjusting the smooth transition, the high-frequency extension is made more natural, with no point being prominent, making the sound more easily distinguishable and less harsh, achieving a balanced listening experience throughout the car with "immersive rear seats and clear front seats" or "immersive front seats and clear rear seats".
[0063] In some embodiments of this application, the above-described method for adjusting in-vehicle sound field parameters further includes: acquiring the playback content of the display device, determining a frequency correction coefficient based on the playback content, and correcting the frequency of the target equalizer based on the frequency correction coefficient.
[0064] Specifically, different playback content caters to different user needs. For example, when playing movies, users crave immersion, clear dialogue, stunning special effects, and the ability to hear every line clearly, experience surround sound, and become fully immersed in the story. When playing conferences, users want to hear remote speakers perfectly and have their local speech clearly conveyed. When playing games, users want to pinpoint sound locations, immerse themselves in the game world, and experience the impact of sound effects. And when playing music, users want to enjoy high-quality music while easily singing along or appreciating the visuals. To provide passengers with the ultimate experience, the equalizer frequency can be adaptively adjusted based on the playback content.
[0065] For example, taking music as the playback content, different styles of music have different spectral energy distributions, instrument and vocal characteristics, so different equalization strategies are needed to optimize the listening experience, reproduce the production intent, or adapt to specific environments. For example, when the music genre is pop music, it needs to have a strong rhythm, prominent vocals, and an overall bright and energetic feel. In the ultra-low frequency range, the frequency can be appropriately increased to obtain a "chest massage" effect of ultra-low bass; in the low frequency range, the frequency can be appropriately increased to make the "thump" of drums and electronic synthesized bass more powerful; in the mid frequency range, the frequency can be appropriately decreased to prevent vocals and synthesizer sounds from sounding muffled or "swallowing water"; in the vocal frequency range, the frequency can be appropriately increased to ensure that the lead singer is clear and forward in any accompaniment, etc.
[0066] Therefore, by automatically recognizing the content being played on the display device, loading a customized sound field algorithm based on different content, and fine-tuning the equalizer frequency according to the scene, passengers are given an ultimate audio-visual experience.
[0067] In summary, this application adjusts the in-vehicle sound field parameters in real time according to the position changes of the display device, so that the sound and picture closely follow each other. Automatic volume compensation and equalization adjustment avoid the problem of excessive volume causing ear-piercing or insufficient volume causing inaudibility. The smooth transition of the sound field avoids the "jumping" feeling of the sound, enhances the sense of sophistication of the experience, and provides users with a highly immersive movie-watching experience.
[0068] In summary, the in-vehicle sound field parameter adjustment method according to the embodiments of this application obtains the current position information of the display device, determines the target sound field influence area based on the current position information of the display device, and determines the sound field parameters based on at least one of the following: the distance between all speakers within the target sound field influence area and the center point of the target sound field influence area, the position information of the speakers, and the current position information of the display device. Therefore, this method can dynamically adjust the sound field parameters according to the current position of the display device, making the sound and picture closely follow each other, providing users with a highly immersive viewing experience, and solving the problems of abrupt sound switching, mismatch between the sound field and the screen position, and auditory discomfort (deafeningly loud at close range, inaudible at a distance) during the movement of the display device.
[0069] Corresponding to the above embodiments, this application also proposes a computer-readable storage medium.
[0070] The computer-readable storage medium of this application embodiment stores a program that, when executed by a processor, implements the above-described method for adjusting in-vehicle sound field parameters.
[0071] According to the computer-readable storage medium of the present application embodiment, by implementing the above-described method for adjusting the in-vehicle sound field parameters during execution, the sound field parameters can be dynamically adjusted according to the current position of the display device, so that the sound and the picture closely follow each other, providing users with a highly immersive viewing experience, and solving the problems of abrupt sound switching, mismatch between the sound field and the screen position, and uncomfortable listening (deafeningly loud at close range, inaudible at a distance) during the movement of the display device.
[0072] Corresponding to the above embodiments, this application also proposes a vehicle.
[0073] like Figure 3 As shown, the vehicle 200 in this embodiment may include: a memory 210, a processor 220, and a program stored in the memory 210 and executable on the processor 220. When the processor 220 executes the program, it implements the above-mentioned method for adjusting the in-vehicle sound field parameters.
[0074] According to the vehicle of the present application embodiment, by executing the above-described method for adjusting the in-vehicle sound field parameters, the sound field parameters can be dynamically adjusted according to the current position of the display device, so that the sound and the picture closely follow each other, providing users with a highly immersive viewing experience, and solving the problems of abrupt sound switching, mismatch between the sound field and the screen position, and uncomfortable listening (deafening sound at close range, unclear sound at a distance) during the movement of the display device.
[0075] Corresponding to the above embodiments, this application also proposes a device for adjusting in-vehicle sound field parameters.
[0076] The vehicle steering wheel control device according to this application embodiment includes: an acquisition module, a first determination module, and a second determination module.
[0077] The acquisition module is used to acquire the current position information of the display device. The first determination module is used to determine the target sound field influence area based on the current position information of the display device. The second determination module is used to determine sound field parameters based on at least one of the following: the distance between all speakers within the target sound field influence area and the center point of the target sound field influence area, the speaker position information, and the current position information of the display device.
[0078] In some embodiments of this application, the sound field parameters include the volume value of the loudspeakers. The second determining module determines the sound field parameters based on the distance between all loudspeakers in the target sound field influence area and the center point of the target sound field influence area, and the position information of the loudspeakers. Specifically, it is used to: obtain the distance between each loudspeaker in the target sound field influence area and the center point; determine the volume attenuation coefficient of the corresponding loudspeaker based on the distance and the position information of the loudspeaker; and determine the target volume value of the loudspeaker based on the volume attenuation coefficient and the current volume value of the loudspeaker; wherein, the distance and the volume attenuation coefficient are positively correlated.
[0079] In some embodiments of this application, the sound field parameters include the audio playback time of the loudspeaker. The second determining module determines the sound field parameters based on the distance between all loudspeakers in the target sound field influence area and the center point of the target sound field influence area. Specifically, it is used to: determine the audio delay of the corresponding loudspeaker based on the distance; and determine the audio playback time of the loudspeaker based on the audio delay. Wherein, the distance and the audio delay are negatively correlated.
[0080] In some embodiments of this application, after determining the target volume value of the speaker based on the volume attenuation coefficient and the current volume value of the speaker, the above-mentioned device further includes an adjustment module, which is used to adjust the current volume value of the speaker to the target volume value at a first preset speed within a first preset time; or to adjust the current volume value of the speaker to an intermediate volume value at a second preset speed within a second preset time, and to adjust the intermediate volume value of the speaker to the target volume value at a third preset speed within a third preset time, wherein the first preset time is the sum of the second preset time and the third preset time.
[0081] In some embodiments of this application, the sound field parameters include the frequency of the equalizer. The second determining module determines the sound field parameters based on the current position information of the display device, specifically for: determining the movement direction of the display device based on the current position information and the previous position information of the display device; and determining the frequency of the equalizer based on the movement direction of the display device.
[0082] In some embodiments of this application, the second determining module determines the frequency of the equalizer based on the movement direction of the display device. Specifically, it is used to: when the movement direction of the display device is vertical, obtain the target equalizer in the region opposite to the movement direction and increase the frequency of the target equalizer; when the movement direction of the display device is horizontal, keep the frequency of the equalizer unchanged.
[0083] In some embodiments of this application, the second determining module increases the frequency of the target equalizer, specifically for: increasing the frequency of the target equalizer at a fourth preset speed within a fourth preset time period.
[0084] In some embodiments of this application, the second determining module is further configured to: acquire the playback content of the display device, determine the frequency correction coefficient based on the playback content, and correct the frequency of the target equalizer based on the frequency correction coefficient.
[0085] It should be noted that for details not disclosed in the in-vehicle sound field parameter adjustment device of this application embodiment, please refer to the details disclosed in the in-vehicle sound field parameter adjustment method of this application embodiment, which will not be repeated here.
[0086] According to the in-vehicle sound field parameter adjustment device of this application embodiment, the current position information of the display device is acquired by an acquisition module, and a target sound field influence area is determined by a first determination module based on the current position information of the display device. A second determination module determines the sound field parameters based on at least one of the following: the distance between all speakers within the target sound field influence area and the center point of the target sound field influence area, the speaker position information, and the current position information of the display device. Therefore, this device can dynamically adjust the sound field parameters according to the current position of the display device, making the sound and picture closely follow each other, providing users with a highly immersive viewing experience, and solving problems such as abrupt sound switching, mismatch between the sound field and screen position, and auditory discomfort (deafeningly loud at close range, inaudible at a distance) during the movement of the display device.
[0087] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.
[0088] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.
[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0091] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0092] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A method for adjusting in-vehicle sound field parameters, characterized in that, The method includes installing a movable display device inside the vehicle. Obtain the current location information of the display device; The target sound field influence area is determined based on the current location information of the display device; The sound field parameters are determined based on at least one of the following: the distance between all loudspeakers within the target sound field influence area and the center point of the target sound field influence area, the position information of the loudspeakers, and the current position information of the display device.
2. The method for adjusting in-vehicle sound field parameters according to claim 1, characterized in that, The sound field parameters include the volume values of the loudspeakers. The sound field parameters are determined based on the distances between all loudspeakers within the target sound field influence area and the center point of the target sound field influence area, as well as the position information of the loudspeakers. Obtain the distance between each loudspeaker and the center point within the target sound field influence area; The volume attenuation coefficient of the corresponding speaker is determined based on the distance and the speaker's position information; The target volume value of the speaker is determined based on the volume attenuation coefficient and the current volume value of the speaker; wherein the distance is positively correlated with the volume attenuation coefficient.
3. The method for adjusting the in-vehicle sound field parameters according to claim 2, characterized in that, The sound field parameters include the audio playback time of the loudspeakers. The sound field parameters are determined based on the distances between all loudspeakers within the target sound field influence area and the center point of the target sound field influence area, including: The audio delay of the corresponding speaker is determined based on the distance. The audio playback time of the speaker is determined based on the audio delay; wherein the distance is negatively correlated with the audio delay.
4. The method for adjusting in-vehicle sound field parameters according to claim 2, characterized in that, After determining the target volume value of the speaker based on the volume attenuation coefficient and the current volume value of the speaker, the method further includes: Within a first preset time period, adjust the current volume value of the speaker to the target volume value at a first preset speed; or Within a second preset time period, the current volume value of the speaker is adjusted to an intermediate volume value at a second preset speed, and within a third preset time period, the intermediate volume value of the speaker is adjusted to the target volume value at a third preset speed, wherein the first preset time period is the sum of the second preset time period and the third preset time period.
5. The method for adjusting in-vehicle sound field parameters according to claim 1, characterized in that, The sound field parameters include the frequency of the equalizer. The sound field parameters are determined based on the current position information of the display device, including: The movement direction of the display device is determined based on the current position information and the previous position information of the display device; The frequency of the equalizer is determined based on the direction of movement of the display device.
6. The method for adjusting in-vehicle sound field parameters according to claim 5, characterized in that, Determining the frequency of the equalizer based on the movement direction of the display device includes: When the display device moves in a vertical direction, the target equalizer in the region opposite to the moving direction is acquired, and the frequency of the target equalizer is increased. When the display device moves laterally, the frequency of the equalizer remains unchanged.
7. The method for adjusting in-vehicle sound field parameters according to claim 6, characterized in that, Increasing the frequency of the target equalizer includes: Within a fourth preset time period, the frequency of the target equalizer is increased at a fourth preset speed.
8. The method for adjusting in-vehicle sound field parameters according to claim 5, characterized in that, The method further includes: Obtain the playback content of the display device, and determine the frequency correction coefficient based on the playback content; The frequency of the target equalizer is corrected based on the frequency correction coefficient.
9. A computer-readable storage medium, characterized in that, It stores a program that, when executed by a processor, implements the method for adjusting in-vehicle sound field parameters according to any one of claims 1-8.
10. A vehicle, characterized in that, include: A memory, a processor, and a program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements the method for adjusting in-vehicle sound field parameters according to any one of claims 1-8.