In-vehicle intercom volume control method and device and vehicle

Abstract

This application provides a method, device, and vehicle for controlling in-vehicle call volume. The method includes: when the vehicle's call privacy function is activated, and the user device is connected to the vehicle's in-vehicle system, and the user is making a call to a party opposite the user device via the vehicle's in-vehicle speaker, activating the vehicle's environmental perception module to monitor the surrounding environment in real time; if a target object exists in the surrounding environment, dynamically adjusting the call audio output mode of the party making the call. This method ensures call security and prevents the user's in-vehicle voice from being leaked outside the vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a method, device and vehicle for controlling in-vehicle conversation volume. Background Technology

[0002] Once the mobile phone is wirelessly connected to the vehicle's system, users can directly use the vehicle's system to make hands-free voice calls. The audio from the other party on the mobile phone will be played directly through the vehicle's audio system. This technology allows the driver to make calls safely without taking their hands off the steering wheel.

[0003] Existing in-vehicle systems automatically adjust the volume of in-vehicle media playback after detecting a connected call to reduce interference and improve the in-vehicle call experience.

[0004] However, the existing volume control method of this in-vehicle system is prone to leakage of call content, posing a risk of information leakage. Summary of the Invention

[0005] The in-vehicle call volume control method, device, and vehicle provided in this application are used to ensure call security and prevent users' in-vehicle voice calls from being leaked outside the vehicle.

[0006] In a first aspect, embodiments of this application provide a method for controlling in-vehicle call volume, including:

[0007] When the vehicle's call privacy function is activated, and the user device is connected to the vehicle's in-vehicle system, and the user is making a call to the other party on the opposite side of the user device through the vehicle's in-vehicle speaker, the vehicle's environmental perception module is activated to monitor the vehicle's surrounding environment in real time.

[0008] If a target object exists in the environment surrounding the vehicle, the caller's voice output mode will be dynamically adjusted.

[0009] In one possible implementation, dynamically adjusting the call audio output mode of the calling party includes:

[0010] When the caller's voice is output through the vehicle speaker, the current volume value of the vehicle speaker is obtained;

[0011] If the current volume value is greater than a preset calibration threshold, the vehicle speaker is controlled to output the caller's voice at a target volume value; wherein the target volume value is less than or equal to the preset calibration threshold.

[0012] In one possible implementation, the method further includes: acquiring the ambient noise value present in the environment surrounding the vehicle body; and determining the preset calibration threshold based on the ambient noise value.

[0013] In one possible implementation, dynamically adjusting the call audio output mode of the calling party includes:

[0014] A target speaker is identified among the various in-vehicle speakers inside the vehicle, the target speaker being closest to the user's hearing area;

[0015] The system controls the transfer of the caller's audio from the vehicle speaker to the target speaker for output.

[0016] In one possible implementation, the step of dynamically adjusting the call audio output mode of the caller if a target object is detected in the environment surrounding the vehicle body includes:

[0017] The distance between the target object and the vehicle is acquired in real time; and the call audio output mode of the caller is dynamically adjusted based on the distance.

[0018] In one possible implementation, dynamically adjusting the call audio output mode of the calling party based on the spacing includes:

[0019] When the distance is less than the first distance threshold and greater than the second distance threshold, the vehicle speaker is controlled to output the caller's voice at the target volume value, or the caller's voice is controlled to be transferred from the vehicle speaker to the target speaker for output.

[0020] When the distance to the target object is less than or equal to the second distance threshold, if the vehicle speaker is detected to output the caller's voice at the target volume value, the vehicle speaker is turned off to stop the sound output.

[0021] In one possible implementation, the method further includes: outputting a call privacy alert when the distance is greater than the first distance threshold and less than the third distance threshold.

[0022] In one possible implementation, the method further includes: automatically activating the call privacy function if the vehicle is in braking mode or the vehicle speed is less than a preset speed limit.

[0023] Secondly, embodiments of this application provide an in-vehicle call volume control device, comprising:

[0024] The environmental monitoring module is used to activate the vehicle's environmental perception module to monitor the vehicle's surrounding environment in real time when the vehicle's call privacy function is activated, the user device is connected to the vehicle's in-vehicle system, and the user is making a call to the other party on the opposite side of the user device through the vehicle's in-vehicle speaker.

[0025] The mode adjustment module is used to dynamically adjust the call audio output mode of the calling party if there is a target object in the environment around the vehicle.

[0026] Thirdly, embodiments of this application provide a vehicle, including: a memory and a processor;

[0027] The memory stores computer-executed instructions;

[0028] The processor executes computer execution instructions stored in the memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0029] The in-vehicle call volume control method, device, and vehicle provided in this application embodiment link the anti-peeping function status, vehicle connection status, call output status, and environmental perception results. The vehicle system does not simply execute a fixed volume reduction based on whether the call is connected. Instead, after meeting the conditions for a real call and anti-peeping, it continuously senses the risk of approaching from outside the vehicle and adaptively and dynamically adjusts the call sound output mode. This makes the call privacy protection scenario-specific and real-time responsive, improving the anti-peeping effect. Attached Figure Description

[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0031] Figure 1 A schematic diagram illustrating the in-vehicle call volume control method provided in this application;

[0032] Figure 2 A flowchart illustrating the dynamic adjustment of call audio output mode provided in this application embodiment;

[0033] Figure 3 A flowchart illustrating the dynamic adjustment of call audio output mode according to another embodiment of this application;

[0034] Figure 4 A flowchart illustrating the dynamic adjustment of call audio output mode according to another embodiment of this application;

[0035] Figure 5 A vehicle system architecture diagram provided for embodiments of this application;

[0036] Figure 6 A schematic diagram of the in-vehicle call volume control device provided in this application;

[0037] Figure 7 This is a schematic diagram of the vehicle structure provided in this application.

[0038] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0040] In-vehicle communication control technology falls under the field of smart cockpit and vehicle acoustic interaction, particularly involving the management of in-vehicle speaker output during calls. In practical applications, after users access the vehicle's in-vehicle system via their mobile phones or other user devices, they can make hands-free calls using the in-vehicle speakers. This eliminates the need for users to hold their phones or other user devices near their ears, and their hands remain on the steering wheel, improving driving safety.

[0041] Traditional in-vehicle communication technology primarily revolves around the automatic control of in-vehicle media volume during calls to improve call quality or reduce interference. For example, upon detecting a connected call, it automatically lowers the in-vehicle media playback volume or pauses navigation voice prompts to reduce background noise interference with the conversation, thereby improving the in-vehicle auditory experience. Its working principle is mainly that after the in-vehicle system recognizes a call connection with the user's device, it uses the audio management module to uniformly schedule the speaker output, lowering non-call sounds such as entertainment audio, prompts, and voice announcements to highlight the call audio.

[0042] However, traditional control schemes of this type are limited to whether the call is connected and whether there is other media playing in the car. They lack proactive perception of the surrounding environment of the vehicle and do not include people approaching the vehicle and their distance in the control logic. Therefore, even if the volume of the media in the car has been turned down, the call may still be transmitted to the outside of the car through the vehicle's speakers. Especially in locations where people outside the car can easily approach, such as when the vehicle is parked or moving at low speed, the content of the call may be heard by pedestrians, companions or people on the roadside who are close to the vehicle, creating a significant risk of privacy leakage.

[0043] Furthermore, traditional solutions often use volume reduction as a single strategy, lacking the ability to dynamically adjust the call output mode based on the location of external targets. This means they cannot differentiate control based on varying proximity, nor can they balance in-vehicle call clarity with external eavesdropping prevention. Excessive volume reduction can interfere with normal calls, while insufficient reduction fails to effectively suppress sound leakage. Therefore, traditional in-vehicle call volume adjustment primarily addresses in-vehicle acoustic interference rather than privacy protection in the external environment, exhibiting significant shortcomings in adapting to changes in the external environment, reducing the risk of sound leakage, and improving real-time control.

[0044] In view of this, how to identify whether there are target objects around the vehicle during a car call, when the user is talking to the other party on the other side of the user device through the vehicle's in-vehicle speaker, and how to combine the activation status of the vehicle's call privacy function, the connection status between the user device and the vehicle's in-vehicle system, and the real-time monitoring results of the environmental perception module on the vehicle's surrounding environment, and dynamically adjust the call audio output mode of the other party accordingly, has become an urgent technical problem to be solved.

[0045] To address the aforementioned issues, this application provides a method for controlling in-vehicle call volume. Under the premise of meeting call and anti-peeping requirements, the vehicle's environmental perception module is first activated to continuously monitor the surrounding environment. Then, when a target object is detected, the output mode of the call audio is adaptively adjusted, so that the call audio no longer relies on a fixed output mode but can change according to changes in external risk conditions. This control method, which links call status, vehicle connectivity status, and environmental perception results, provides necessary privacy protection for in-vehicle calls while minimizing premature or excessive intervention in call output when no target object is approaching, thereby achieving both privacy protection and ensuring call clarity.

[0046] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0047] Figure 1 This is a flowchart illustrating the in-vehicle call volume control method provided in this application. This method can be applied to an in-vehicle system, and by executing this method, the volume of the in-vehicle speakers can be controlled. Figure 1 As shown, the method includes:

[0048] Step 110: When the vehicle's call privacy function is activated, and the user device is connected to the vehicle's in-vehicle system, and the user is making a call to the other party on the opposite side of the user device through the vehicle's in-vehicle speaker, the vehicle's environmental perception module is activated to monitor the vehicle's surrounding environment in real time.

[0049] Step 120: If there is a target object in the environment around the vehicle, the caller's voice output mode is dynamically adjusted.

[0050] In this embodiment, the call privacy protection function can be understood as a privacy protection control function set up by the vehicle to prevent the content of the call from being transmitted outside the vehicle. Its function is to allow the vehicle system to enter the call output control state based on the external environment when the preset conditions are met, so as to prevent the content of the call between the user and the other party from being leaked to the target object outside the vehicle (such as pedestrians or recording devices outside the vehicle).

[0051] The activation of the call privacy function can be confirmed by both the vehicle's operating status and the user interface switch. Specifically, when the vehicle is in braking mode and the user turns on the "call privacy" control in the vehicle's infotainment system, the privacy function status will be marked as effective. Alternatively, when the vehicle is traveling at low speed, the function can be activated if the speed is less than a preset low-speed threshold.

[0052] Specifically, the preset low-speed threshold can be 5 km / h, 10 km / h, or other values ​​that match the vehicle calibration strategy to adapt to scenarios such as vehicle movement, waiting, and temporary parking.

[0053] In this embodiment, the user equipment can be a mobile phone, tablet terminal, wearable device with cellular communication capabilities, or other mobile terminal capable of establishing a voice call link. For example, taking a mobile phone as the user equipment, the phone can establish a connection with the vehicle system via Bluetooth. When the user makes or receives a call, the other party's voice will be directly played through the vehicle's speakers, instead of being played through the phone's speakers.

[0054] The in-vehicle system can be an electronic system consisting of a vehicle host, an audio controller, a cockpit domain controller, and a call management module, used to complete connection management, call recognition, audio routing control, and environmental linkage processing.

[0055] Vehicle speakers can be one or more of the following: vehicle entertainment speakers, dashboard speakers, door speakers, and headrest speakers, used to play voice signals from the other side of a call.

[0056] The environmental perception module can be an environmental detection system consisting of an onboard camera, ultrasonic radar, millimeter-wave radar, and their data fusion processing unit, used to identify whether there are target objects approaching the vehicle around the vehicle body.

[0057] During the call, the environmental perception module can continuously acquire external environmental data according to preset time intervals or event triggering mechanisms, and continuously refresh the target object recognition results, rather than performing a one-time detection only at the moment the call begins.

[0058] For example, the specific implementation process of step 110 above can be as follows: The vehicle controller first reads the call anti-peeping function activation status, the connection status information between the user equipment and the vehicle system, and the call status information of the user equipment from the vehicle status bus, the cockpit interaction interface, and the call management module, respectively, and performs a joint judgment on multiple status quantities. If the judgment meets the conditions, the environmental perception module is activated.

[0059] The environmental perception module can be specifically divided into visual sensors (such as cameras) and spatial perception sensors (such as ultrasonic radar).

[0060] For example, if the environmental perception module uses cameras, it can call the front-view camera, left and right side-view cameras and surround-view cameras to acquire images outside the vehicle, and use object detection networks or rule recognition algorithms to identify target objects such as pedestrians, people standing, and people close to the car door, and combine the image coordinates to estimate the position and direction of movement of the target objects relative to the vehicle body.

[0061] For example, if the environmental perception module uses ultrasonic radar, it can identify whether there are approaching target objects in the vicinity of the vehicle based on the echo time and intensity information it returns, and determine whether they are dynamic targets by continuous frame changes.

[0062] In this embodiment, the target object mainly refers to a person who may be outside the vehicle and can hear the conversation inside the vehicle. It can also be expanded to include people pushing strollers, cyclists, people leaning out of nearby vehicles, and other objects that pose a risk of approach, depending on the actual deployment.

[0063] In addition, the surrounding environment of the vehicle refers to the external space area within a preset range, with the vehicle's outer contour as a reference. This range can be calibrated based on sound propagation characteristics, sensor effective distance, and vehicle size. Through the above continuous sensing, the surrounding environment of the vehicle can be continuously and stably monitored in real time, provided that the call has started and the anti-peeping function is effective, providing a reliable trigger basis for adjusting the subsequent call audio output mode.

[0064] In some implementations, the call privacy function can be automatically activated by the vehicle, for example, if the vehicle is in a braking position (e.g., P gear) or the vehicle speed is less than a preset speed limit (e.g., 3 km / h).

[0065] Among them, the braking gear is used to indicate that the vehicle is in a parking or parking preparation state, and the preset speed lower limit is used to indicate the critical speed for the vehicle to enter the low-speed slow-moving zone.

[0066] Regarding step 120 above, after the environmental perception module outputs the target object recognition result, the vehicle system can calculate the current privacy risk level based on the spatial relationship between the target object and the vehicle. This calculation process can be completed based on the minimum distance between the target object and the vehicle body, the location of the target object, and the motion trajectory of multiple consecutive frames.

[0067] For example, the area around a vehicle can be divided into an outer warning zone, a middle suppression zone, and an inner key protection zone. When a target enters the outer warning zone, it indicates that an external approach risk has occurred but has not yet reached a high leakage risk. The vehicle system can first output a reminder message to the user on the vehicle screen, instrument display area, or voice prompt module, indicating that someone is approaching nearby and suggesting that you pay attention to call privacy.

[0068] When the target enters the outer alert area, the call volume can remain unchanged or be reduced only slightly to accommodate the user's need for call clarity.

[0069] Furthermore, when the target continues to enter the mid-level suppression zone, the vehicle system can perform automatic volume reduction control on the current call stream, such as reducing the output volume of the vehicle speakers from the current level to a preset threshold, or attenuating it by a certain number of decibels according to a preset ratio, thereby reducing the voice energy propagating outward through windows, door panels and body gaps.

[0070] The preset threshold can be determined based on the vehicle's acoustic calibration, ambient background noise, and cabin sealing performance to ensure that users inside the vehicle can still hear the voices from the other side while reducing the visibility outside the vehicle.

[0071] Furthermore, when the target object enters the inner key protection zone, the vehicle system can further change the speaker output path, switching the call sound from the whole vehicle speaker mode to the driver's headrest speaker mode, or to the near-field speaker mode closer to the current caller, so that the voice energy is concentrated near the occupant's head, thereby significantly reducing the range of the sound field radiated outwards from the vehicle.

[0072] In another implementation, the in-vehicle system can also perform regional speaker shutdown based on the location of the target object on the vehicle body. For example, if the target object is detected to be near the left door, the speakers of the left front door and left rear door are turned off, and only the right or headrest area speakers are kept on; if the target object is located at the rear of the vehicle, the output weight of the rear speakers is reduced to reduce sound leakage through the rear windows.

[0073] In scenarios where multiple people are approaching, the in-vehicle system can increase the control intensity based on the number of target objects. For example, when two or more target objects are detected distributed in different locations of the vehicle, the system can skip the simple volume reduction stage and force the system to enter the headrest speaker mode or perform a greater volume compression.

[0074] In addition, if the ambient noise is high, people outside the vehicle will have a reduced ability to recognize the voice content inside the vehicle in a high-noise background. However, the demand for clear hearing of voices from the opposite side will also increase for users inside the vehicle. Therefore, the vehicle system can make joint adjustments based on the ambient noise level and the number of nearby targets to maintain privacy protection while avoiding excessive volume reduction that would degrade the call experience.

[0075] In another implementation, the in-vehicle system can also retain the original volume value, original speaker configuration and original media state at the start of the call before dynamic adjustment, and automatically restore the state before adjustment after the call ends, the connection is disconnected or the target object continues to disappear for a preset time, thereby ensuring the consistency of user experience after the control ends.

[0076] The in-vehicle call volume control method provided in this application link the privacy protection function status, vehicle connection status, call output status, and environmental perception results. The in-vehicle system does not simply apply a fixed volume reduction based on whether the call is connected. Instead, after meeting the conditions for a genuine call and privacy protection, it continuously senses the risk of approaching from outside the vehicle and adaptively and dynamically switches control strategies such as alerts, volume reduction, area mute, or headrest speaker output based on the presence, distance changes, and location information of the target object. This makes call privacy protection scenario-specific and responsive in real time. This effectively reduces the risk of privacy leaks caused by the propagation of call sounds outside the vehicle in scenarios where people are easily approached, such as when the vehicle is parked, waiting, or moving at low speed. It also avoids prematurely or excessively reducing the call quality when no target object is detected.

[0077] Figure 2 The flowchart for dynamically adjusting the call audio output mode provided in the embodiments of this application is as follows: Figure 2 As shown, the method includes:

[0078] Step 210: When the caller's voice is output through the vehicle's speaker, obtain the current volume value of the vehicle's speaker;

[0079] Step 220: If the current volume value is greater than the preset calibration threshold, control the vehicle speaker to output the caller's voice at the target volume value. The target volume value is less than or equal to the preset calibration threshold.

[0080] In this embodiment, the "calling party" refers to the other party in a conversation with the user. For example, if a user calls their child on their mobile phone and asks, "Where are you now?", and the child replies, "On the 3rd floor of Building A in the mall," then the child is considered the other party in the conversation, and the other party's voice will be "On the 3rd floor of Building A in the mall."

[0081] In this embodiment, the vehicle speaker that outputs call audio can refer to one or more speakers inside the vehicle. For example, when the user is in the driver's seat, call audio can be output through only one speaker behind the front center console screen. Or, when the user is in the back seat, call audio can be output simultaneously through multiple speakers, including one speaker behind the front center console screen and rear speakers, to ensure clear sound.

[0082] When multiple car speakers output call audio simultaneously, their volume levels can also be different. For example, the volume level of the speaker behind the front center console screen can be set to a higher level, resulting in a louder call audio output, while the volume level of the rear speakers can be set to a lower level, resulting in a quieter call audio output.

[0083] In this embodiment, the preset calibration threshold can be obtained by pre-calibration. The vehicle speaker outputs sound using the preset calibration threshold, which can ensure that the voice in the vehicle is clear and that people outside the vehicle cannot hear it clearly.

[0084] In other implementations, the preset calibration threshold can also be dynamically adjusted. For example, the ambient noise value of the environment around the vehicle can be collected by a microphone, and the preset calibration threshold can be dynamically adjusted by the vehicle system based on the ambient noise value.

[0085] Among them, the environmental noise value can refer to the background sound in the external space of the vehicle, which is formed by factors such as road traffic, wind noise, human voices, and the operation of surrounding equipment. Specifically, it can be obtained by collecting the sound pressure signal around the vehicle body through the vehicle microphone array, filtering it, removing transient interference, and converting it.

[0086] When the ambient noise is in a high range, the preset calibration threshold can be increased accordingly to avoid excessively lowering the call volume when the external noise is strong, which would affect the in-car hearing effect; when the ambient noise is in a low range, the preset calibration threshold can be decreased accordingly to enhance the ability to suppress the leakage of call sound.

[0087] By dynamically adjusting the preset calibration threshold, the in-vehicle system can dynamically determine the judgment benchmark according to the external noise level in different scenarios, avoiding the problem of insufficient adaptability caused by a fixed preset calibration threshold. When the vehicle is in a quiet environment, the system can more sensitively limit the propagation of the call sound; when the vehicle is in a noisy environment, it can retain the necessary call loudness and reduce hearing loss caused by accidental adjustment.

[0088] In addition, if the target is outside the vehicle and relatively far away from the vehicle, the target volume value can be set to a preset calibration threshold. However, if the target is close to the vehicle window, the target volume value is set to less than the preset calibration threshold to avoid leakage of call content.

[0089] The call volume control method provided in this application embodiment achieves dynamic constraint on the call sound output intensity by judging the current volume value by threshold. This enables the vehicle speaker to fall back to a safe volume range in a timely manner when there is a privacy risk in the external environment, avoiding excessive leakage of call content, while maintaining the basic clarity required for in-vehicle calls.

[0090] Figure 3 A flowchart illustrating the dynamic adjustment of call audio output mode according to another embodiment of this application is provided, such as... Figure 3 As shown, the method includes:

[0091] Step 310: Identify the target speaker among the various in-vehicle speakers inside the vehicle. The target speaker is the one closest to the user's hearing area.

[0092] Step 320: Control the caller's voice to be transferred from the vehicle speaker to the target speaker for output.

[0093] In this embodiment, the vehicle speaker may include multiple sound-emitting units arranged in the center console, A-pillar, door panel, headrest, or ceiling. The user's hearing location may be the center point of the user's ear, or the ear area position estimated based on the seat occupancy status and head posture.

[0094] The in-vehicle system can combine in-vehicle cameras, seat pressure sensors, seat memory parameters or seat position encoders to establish the spatial relationship between the user's seat and each speaker, and calculate the spatial distance from each speaker to the hearing part. The speaker with the smallest distance is identified as the target speaker.

[0095] The target loudspeaker can be a single loudspeaker or a group of local loudspeakers located in the same area.

[0096] For example, when a user is on a call, if the user is in the driver's seat, the call sound can be output by the first speaker on the center console and the second speaker on the headrest by default. If a target object is detected approaching outside the vehicle, the call sound will be switched to be output by the second speaker only, and the first speaker will temporarily stop producing sound.

[0097] Furthermore, once the target has left, the first and second speakers can resume emitting a call sound together.

[0098] This embodiment compares the distances between each speaker and the user's hearing area, selecting the nearest speaker as the output port and focusing the call sound onto the user's area, thus shortening the voice propagation path and increasing its directionality. Since the non-target speakers no longer handle call output, the sound pressure level received outside the carriage is correspondingly reduced, thereby decreasing the likelihood of the call being overheard by people outside the carriage. At the same time, the user can still clearly receive the call content at a lower output power, ensuring both clear communication and preventing call content leakage.

[0099] Figure 4 A flowchart illustrating the dynamic adjustment of call audio output mode according to another embodiment of this application is provided, such as... Figure 4 As shown, the method includes:

[0100] Step 410: Obtain the distance between the target object and the vehicle in real time;

[0101] Step 420: Based on the spacing, dynamically adjust the call audio output mode of the calling party.

[0102] In this embodiment, the target object can be movable, such as a pedestrian, occupant, or other traffic participant located around and potentially approaching the vehicle. The spacing represents the closest distance between the target object and the vehicle's outer surface, quantified in meters, to provide a distance basis for adjusting the call audio output mode.

[0103] In this embodiment, the environmental perception module may consist of a camera, millimeter-wave radar, ultrasonic radar, or a multi-sensor fusion unit. The camera is used to identify the category and location of the target object, the radar is used to output distance information, and the fusion unit is used to perform time synchronization and spatial registration of data from different sensors to improve the stability of target object identification and ranging results.

[0104] In the process of obtaining the distance between the target object and the vehicle in real time, the spatial position of the target object can be determined first based on image coordinates, radar echo point cloud or ultrasonic ranging results, and then the nearest boundary distance can be calculated by combining the vehicle's outer contour model.

[0105] In addition, in some implementation methods, when there are multiple target objects, the smallest distance can be selected as the basis for dynamic adjustment to avoid omitting the risk source closest to the vehicle.

[0106] When dynamically adjusting the call audio output mode of the other party, you can adjust the volume of the car speaker that outputs the call audio, or you can choose to switch the speaker that outputs the call audio.

[0107] The dynamic adjustment method provided in this application allows the vehicle to implement differentiated control based on the proximity of the target object, avoiding the unclear call quality caused by relying solely on uniform volume reduction, and also reducing the probability of call content spreading outside the vehicle. Since the control is based on real-time distance information, the vehicle system's response more closely reflects actual risk conditions, improving in-vehicle call privacy protection capabilities and enhancing the adaptability and stability of the entire call output control system.

[0108] Furthermore, in some embodiments, hierarchical progressive control can be implemented to achieve dynamic adjustment, and the specific steps are as follows:

[0109] Step 11: When the distance is less than the first distance threshold and greater than the second distance threshold, control the vehicle speaker to output the caller's voice at the target volume value, or control the caller's voice to be transferred from the vehicle speaker to the target speaker for output.

[0110] Step 12: When the distance to the target object is less than or equal to the second distance threshold, if the vehicle speaker is detected to be outputting the caller's voice at the target volume value, the vehicle speaker is turned off to stop the sound output.

[0111] In this embodiment, the spacing is used to characterize the spatial distance between the target object and the vehicle. The first distance threshold and the second distance threshold are both preset by the vehicle system, and the first distance threshold is greater than the second distance threshold.

[0112] For example, the first distance threshold can be 1 meter and the second distance threshold can be 0.1 meters.

[0113] In actual control, after receiving the real-time distance of the target object, the vehicle system first compares this distance with a first distance threshold and a second distance threshold. When the distance is between the two thresholds, the vehicle system outputs a control command to the audio management module. If the current call sound is being output by a vehicle speaker A, its volume can be reduced to the target volume value. Alternatively, the system can switch to the target speaker to output the call sound, allowing the target speaker to continue playing the call sound within ear range.

[0114] When the distance is less than or equal to the second distance threshold, if the vehicle system detects that the call sound is still being output by the vehicle speaker at the target volume value, it sends a shutdown control signal to stop the vehicle speaker from emitting sound, thus creating a stronger privacy protection effect. After the vehicle speaker is turned off, the vehicle can still maintain the call link so that the output can be restored according to the distance change later.

[0115] Furthermore, in some other implementations, a third distance threshold (e.g., 5 meters) can be configured to output a call privacy warning when the distance is greater than the first distance threshold and less than the third distance threshold.

[0116] In this embodiment, the call privacy alert can be output in conjunction with the vehicle system's display module, speaker, or interior ambient lighting.

[0117] The display module can show a message on the central control screen or instrument panel that reads "Someone is approaching, please be mindful of your call privacy"; the speaker can output a prompt tone or voice broadcast; and the ambient light can alert the user by flashing and changing colors.

[0118] The timing of the call anti-peeping prompt is triggered by the distance between the target objects obtained in real time by the environmental perception module. After determining that the distance is greater than the first distance threshold and less than the third distance threshold, the prompt is executed.

[0119] For example, taking a first distance threshold of 1 meter, a second distance threshold of 0.1 meters, and a third distance threshold of 5 meters as an example, the specific layering strategy is as follows:

[0120] (1) When the target is less than 5 meters away from the vehicle, a pop-up window inside the vehicle will remind the user: "Someone is approaching, be careful to avoid being spied on."

[0121] (2) When the target object is less than 1 meter away from the vehicle, a sound reduction strategy is implemented, a headrest speaker switching strategy is implemented, and a pop-up reminder is given at the same time;

[0122] (3) If the target object is less than 0.1 meters away from the edge, the policy of turning off the speaker at the location of the person executing the action will be displayed, and a pop-up window will remind you that "the speaker has been turned off"; if the headrest speaker has already been switched, no action will be taken.

[0123] In the above embodiments, three distance thresholds are used to classify the response to proximity risk. At medium proximity distances, sound leakage is reduced by lowering the volume or shifting the output. At extremely close distances, sound propagation is suppressed by turning off the vehicle speakers. This allows the call output mode to adapt to the proximity of external objects, so that the vehicle can maintain call continuity while reducing the risk of the call being overheard by people outside the vehicle.

[0124] The following is a detailed description of this solution through an embodiment, with the specific process as follows:

[0125] (1) When the vehicle is started, the in-vehicle entertainment control system is started, the vehicle driver assistance system is started, and the vehicle's Bluetooth is connected to the mobile phone.

[0126] Among them, the vehicle driver assistance system must be equipped with a front-view camera, a side-view camera, and a rear-view camera, and have 360-degree visual perception capability, and be able to identify whether there are people within 5 meters around the vehicle;

[0127] (2) Activate call privacy protection function.

[0128] (3) During a phone call (answering or making a call), and the sound source is the vehicle's main speaker (not a mobile phone);

[0129] (4) The vehicle's assisted driving is activated, and the surrounding objects are identified and rendered to identify whether there are people within 5 meters.

[0130] (6) Dynamic adjustment of call audio output mode:

[0131] Method 1: If someone is present, the automatic volume reduction function will be activated (if the current speaker volume X > A, the call volume will be reduced to A. Here, A is the vehicle's calibrated volume value; evaluation shows that volume A ensures clear calls inside the vehicle, and that people standing close to the vehicle cannot hear clearly). Simultaneously, a pop-up notification on the large screen or instrument panel will inform the user that "the call privacy function has been activated, and the vehicle has automatically reduced the volume."

[0132] Method 2: If someone is present, the automatic volume reduction function will be activated (the call speaker will automatically switch to the driver's headrest speaker); at the same time, a pop-up window on the large screen or instrument panel will inform the user that "the call privacy function has been activated, and the vehicle has automatically reduced the volume."

[0133] Method 3: The driver assistance camera can detect the distance to people outside the vehicle. Different strategies are implemented based on the distance of the person from the vehicle, as follows:

[0134] ① When a target approaches the vehicle within 5 meters, a pop-up window inside the vehicle will display a warning: "Someone is approaching, be careful to avoid being spied on."

[0135] ② When the target object is less than 1 meter away from the vehicle, a volume reduction strategy is implemented, a headrest speaker switching strategy is implemented, and a pop-up reminder is displayed.

[0136] ③ If the target object is less than 0.1 meters away from the edge, the policy of turning off the speaker at the location of the person executing the action will be implemented, and a pop-up window will remind you that "the speaker has been turned off" will be displayed; if the headrest speaker has already been switched, no action will be taken.

[0137] (7) When the call ends, the in-vehicle call privacy function is deactivated, and the call speaker volume X automatically returns to the volume value before the volume was lowered; the call sound returns to the state before the driver's headrest speaker was switched to sound.

[0138] (8) Other scenarios: If the in-vehicle call anti-peeping function has been activated during the call, and the vehicle is started (not in P gear, vehicle speed > 3 km / h), the status quo will be maintained; if a call is connected while driving (not in P gear, vehicle speed > 3 km / h), the in-vehicle call anti-peeping function will not be activated.

[0139] in addition, Figure 5 The vehicle system architecture diagram provided for the embodiments of this application is as follows: Figure 5 As shown, visual sensors (e.g., ...) are installed at different locations on the vehicle body. Figure 5 (The system includes forward, rear, and side views). Taking a mobile phone as an example, the mobile phone can connect to the controller in the in-vehicle entertainment system wirelessly (e.g., via Bluetooth).

[0140] The controller further connects to the driver assistance system, the vehicle's instrument panel, and a large screen (such as the central control screen). By combining the various hardware components in the above system architecture with the steps and methods described above, it is possible to dynamically adjust the call audio output mode, thereby protecting the user's call privacy.

[0141] Figure 6 This is a schematic diagram of the in-vehicle call volume control device provided in this application, as shown below. Figure 6 As shown, the in-vehicle call volume control 60 provided in this embodiment includes:

[0142] The environmental monitoring module 610 is used to activate the vehicle's environmental perception module to monitor the vehicle's surrounding environment in real time when the vehicle's call privacy function is activated, the user device is connected to the vehicle's in-vehicle system, and the user is making a call to the other party on the opposite side of the user device through the vehicle's in-vehicle speaker.

[0143] The mode adjustment module 620 is used to dynamically adjust the call audio output mode of the caller if there is a target object in the environment around the vehicle.

[0144] In one possible implementation, the mode adjustment module 620 can be used to: obtain the current volume value of the vehicle speaker when the caller's voice is output through the vehicle speaker; if the current volume value is greater than a preset calibration threshold, control the vehicle speaker to output the caller's voice at a target volume value.

[0145] The target volume value is less than or equal to the preset calibration threshold.

[0146] In one possible implementation, the in-vehicle call volume control device 60 further includes a threshold dynamic adjustment module for acquiring the ambient noise value present in the environment surrounding the vehicle; and determining a preset calibration threshold based on the ambient noise value.

[0147] In one possible implementation, the mode adjustment module 620 can be used to: identify a target speaker among the various in-vehicle speakers inside the vehicle; and control the caller's voice to be transferred from the in-vehicle speakers to the target speaker for output.

[0148] Among them, the target speaker is closest to the user's hearing area.

[0149] In one possible implementation, the mode adjustment module 620 can be used to: obtain the distance between the target object and the vehicle in real time; and dynamically adjust the call audio output mode of the caller based on the distance.

[0150] In one possible implementation, the mode adjustment module 620 can be specifically used to: control the vehicle speaker to output the caller's voice at a target volume value when the distance is less than a first distance threshold and greater than a second distance threshold, or control the caller's voice to be transferred from the vehicle speaker to the target speaker for output; when the distance to the target object is less than or equal to the second distance threshold, if the vehicle speaker is detected to output the caller's voice at the target volume value, the vehicle speaker is turned off to stop the sound output.

[0151] In one possible implementation, the in-vehicle call volume control device 60 also includes a prompt module for outputting a call privacy prompt when the distance is greater than a first distance threshold and less than a third distance threshold.

[0152] The in-vehicle call volume control device provided in this embodiment can execute the method provided in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0153] Figure 7 This is a schematic diagram of the vehicle structure provided in this application. Figure 7 As shown, the vehicle 70 provided in this embodiment includes at least one processor 701 and a memory 702. Optionally, the vehicle 70 also includes a communication component 703. The processor 701, memory 702, and communication component 703 are connected via a bus.

[0154] In a specific implementation, at least one processor 701 executes computer execution instructions stored in memory 702, causing at least one processor 701 to perform the above-described method.

[0155] The specific implementation process of processor 701 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0156] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0157] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0158] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0159] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0160] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0161] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0162] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0163] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0164] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0165] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0166] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0167] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0168] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for controlling in-vehicle call volume, characterized in that, include: When the vehicle's call privacy function is activated, and the user device is connected to the vehicle's in-vehicle system, and the user is making a call to the other party on the opposite side of the user device through the vehicle's in-vehicle speaker, the vehicle's environmental perception module is activated to monitor the vehicle's surrounding environment in real time. If a target object exists in the environment surrounding the vehicle, the caller's voice output mode will be dynamically adjusted.

2. The method according to claim 1, characterized in that, The dynamic adjustment of the call audio output mode of the calling party includes: When the caller's voice is output through the vehicle speaker, the current volume value of the vehicle speaker is obtained; If the current volume value is greater than a preset calibration threshold, the vehicle speaker is controlled to output the caller's voice at a target volume value; wherein the target volume value is less than or equal to the preset calibration threshold.

3. The method according to claim 2, characterized in that, The method further includes: Obtain the ambient noise level around the vehicle body; Based on the environmental noise value, the preset calibration threshold is determined.

4. The method according to any one of claims 1-3, characterized in that, The dynamic adjustment of the call audio output mode of the calling party includes: A target speaker is identified among the various in-vehicle speakers inside the vehicle, the target speaker being closest to the user's hearing area; The system controls the transfer of the caller's audio from the vehicle speaker to the target speaker for output.

5. The method according to claim 1, characterized in that, If a target object exists in the environment surrounding the vehicle, the caller's voice output mode is dynamically adjusted, including: The distance between the target object and the vehicle is obtained in real time; Based on the aforementioned spacing, the call audio output mode of the calling party is dynamically adjusted.

6. The method according to claim 5, characterized in that, The step of dynamically adjusting the call audio output mode of the calling party based on the distance includes: When the distance is less than the first distance threshold and greater than the second distance threshold, the vehicle speaker is controlled to output the caller's voice at the target volume value, or the caller's voice is controlled to be transferred from the vehicle speaker to the target speaker for output. When the distance to the target object is less than or equal to the second distance threshold, if the vehicle speaker is detected to output the caller's voice at the target volume value, the vehicle speaker is turned off to stop the sound output.

7. The method according to claim 6, characterized in that, The method further includes: When the distance is greater than the first distance threshold and less than the third distance threshold, a call privacy warning is output.

8. The method according to any one of claims 1-3 or 5-7, characterized in that, The method further includes: If the vehicle is in braking mode or the vehicle speed is less than a preset speed limit, the call privacy protection function will be automatically activated.

9. A vehicle-mounted intercom volume control device, characterized in that, include: The environmental monitoring module is used to activate the vehicle's environmental perception module to monitor the vehicle's surrounding environment in real time when the vehicle's call privacy function is activated, the user device is connected to the vehicle's in-vehicle system, and the user is making a call to the other party on the opposite side of the user device through the vehicle's in-vehicle speaker. The mode adjustment module is used to dynamically adjust the call audio output mode of the calling party if there is a target object in the environment around the vehicle.

10. A vehicle, characterized in that, include: Memory, processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory, causing the processor to perform the method as described in any one of claims 1-8.

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