Noise reduction method and device, traffic vehicle and storage medium

Abstract

The invention discloses a noise reduction method and device, a traffic carrier and a storage medium. The method is applied to a traffic vehicle, a cabin of the traffic vehicle is divided into at least two areas, and the method comprises the following steps: collecting environmental noise data; determining a target area in the at least two areas; obtaining a noise reduction strategy corresponding to the target area; and based on the noise reduction strategy corresponding to the target area and the environmental noise data, performing noise reduction processing on the target area. According to the technical scheme provided by the embodiment of the invention, the cockpit of the traffic vehicle is divided into a plurality of areas, after the environmental noise data is collected, the target area in which passengers exist is determined, then the noise reduction processing is performed on the target area according to the noise reduction strategy corresponding to the target area, the noise reduction strategies corresponding to different target areas can be different, and the noise reduction effect is good. In other words, partitioned noise reduction of the traffic carrier is achieved, different noise reduction effects are provided for different areas of the traffic carrier, and therefore the noise reduction requirements of passengers in different areas are met.

Description

Technical Field

[0001] The present application relates to the field of sound processing technology, and in particular to a noise reduction method, device, transportation vehicle and storage medium. Background Art

[0002] There is a lot of noise when the vehicle is driving, such as wind noise, horns of other vehicles, warning sounds, engine roar, etc. In order to ensure driving safety and give passengers a better riding experience, it is necessary to develop vehicle noise reduction technology.

[0003] The vehicle-mounted noise reduction solutions provided by the relevant technology usually include the following two types: on the one hand, the vehicle is provided with noise reduction materials, which can absorb part of the noise; on the other hand, the vehicle's control module performs noise reduction processing on the ambient noise data through active noise reduction technology.

[0004] The above-mentioned vehicle-mounted noise reduction solution is to reduce the noise of the entire vehicle, but the noise reduction effect is not good. Summary of the invention

[0005] The present application proposes a noise reduction method, device, transportation vehicle and storage medium.

[0006] In a first aspect, an embodiment of the present application provides a noise reduction method, which is applied to a transportation vehicle, wherein the cabin of the transportation vehicle is divided into at least two areas, and the method includes: collecting environmental noise data; determining a target area among the at least two areas, where the target area refers to an area where passengers are present; obtaining a noise reduction strategy corresponding to the target area; and performing noise reduction processing on the target area based on the noise reduction strategy corresponding to the target area and the environmental noise data.

[0007] In a second aspect, an embodiment of the present application provides a noise reduction device, which includes: a noise collection module for collecting environmental noise data; an area determination module for determining a target area among at least two areas, where the target area refers to an area where passengers are present; a strategy acquisition module for acquiring a noise reduction strategy corresponding to the target area; and a noise reduction processing module for performing noise reduction processing on the target area based on the noise reduction strategy corresponding to the target area and the environmental noise data.

[0008] In a third aspect, an embodiment of the present application provides a transportation vehicle, comprising: a memory; one or more processors coupled to the memory; one or more programs, wherein the one or more applications are stored in the memory and configured to be executed by the one or more processors, and the one or more programs are configured for the method described in the first aspect.

[0009] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer program instructions are stored. The computer program instructions can be called by a processor to execute the method of the first aspect.

[0010] In a fifth aspect, an embodiment of the present application provides a computer program product, which, when instructions in the computer program product are executed, is used to implement the method of the first aspect.

[0011] Compared with the prior art, the technical solution provided in the embodiment of the present application divides the cabin of a transportation vehicle into multiple areas. After collecting the environmental noise data, the target area where the passengers exist is first determined, and then the target area is subjected to noise reduction processing according to the noise reduction strategy corresponding to the target area. The noise reduction strategies corresponding to different target areas may be different, that is, zoned noise reduction is achieved for the transportation vehicle, and different noise reduction effects are provided to different areas of the transportation vehicle, thereby meeting the noise reduction needs of passengers in different areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a schematic diagram of the implementation environment provided by the embodiment of the present application.

[0014] Figure 2 This is a flow chart of a noise reduction method provided by an embodiment of the present application.

[0015] Figure 3 This is a flow chart of a noise reduction method provided by another embodiment of the present application.

[0016] Figure 4 This is a flow chart of a noise reduction method provided by another embodiment of the present application.

[0017] Figure 5 This is a schematic diagram of an interface for setting a noise reduction mode provided by an embodiment of the present application.

[0018] Figure 6 This is an interface diagram for setting the noise reduction strategy for the partition noise reduction mode provided by an embodiment of the present application.

[0019] Figure 7 This is an interface diagram of the area division setting provided by an embodiment of the present application.

[0020] Figure 8 It is a block diagram of a noise reduction device provided by an embodiment of the present application.

[0021] Fig. 9 This is a structural block diagram of a transportation vehicle provided in one embodiment of the present application. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0023] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0024] Please refer to Figure 1 , which shows a schematic diagram of an implementation environment provided by an embodiment of the present application. The implementation environment includes a transportation vehicle 100, which can be a vehicle or an aircraft. In the embodiment of the present application, only the transportation vehicle 100 is taken as an example for explanation.

[0025] In an embodiment of the present application, the transportation vehicle 100 includes a cockpit, and its cockpit is divided into a plurality of areas. For example, the cockpit of the transportation vehicle 100 is divided into two areas, namely, a main driving area and a non-main driving area. For another example, the cockpit of the transportation vehicle 100 is divided into three areas, namely, a main driving area, a co-pilot area, and a back seat area. For another example, the cockpit of the transportation vehicle 100 is divided into four areas, namely, a main driving area, a co-pilot area, a main driving back seat area, and a co-pilot back seat area. In an embodiment of the present application, only the first division method is taken as an example for illustration.

[0026] Different areas of the cabin of the transportation vehicle 100 have different requirements for noise reduction effects. For example, when performing noise reduction processing on the main driving area, environmental noise data that affects driving safety must be retained to ensure driving safety, such as human voices, warning sounds, and horns from other transportation vehicles. However, when performing noise reduction processing on the non-main driving area, the above-mentioned environmental noise data that affects driving safety is not necessary and needs to be suppressed to provide a quieter environment for passengers in the non-main driving area.

[0027] Based on this, the embodiment of the present application provides a partition noise reduction solution, which divides the cabin of the transportation vehicle 100 into multiple areas. After collecting the environmental noise data, the target area where the passengers are present is first determined, and then the target area is subjected to noise reduction processing according to the noise reduction strategy corresponding to the target area. The noise reduction strategies corresponding to different target areas may be different, that is, partition noise reduction for the transportation vehicle is achieved, and different noise reduction effects are provided to different areas of the transportation vehicle, thereby meeting the noise reduction needs of passengers in different areas. For example, the noise reduction frequency band of the main driving area is narrower, the noise reduction intensity is weaker, and the types of noise signals to be shielded are fewer, so that the noise suppression effect on the main driving area is poor, and the situation that the driver cannot make correct driving decisions based on the external environment when the external sound is mostly or completely shielded is avoided, thereby improving driving safety. For another example, the noise reduction frequency band of the non-main driving area is wider, the noise reduction intensity is stronger, and the types of noise signals to be shielded are more, so that the noise suppression effect on the non-main driving area is better, and a quieter environment is provided for the non-main driving area.

[0028] In the embodiment of the present application, the traffic vehicle 100 is provided with a sound collection module (such as a microphone array), and the sound collection module collects the environmental noise data of the traffic vehicle 100, and the environmental noise data includes wind sound, human voice, whistle sound, warning sound, engine roar, etc. emitted by other traffic vehicles.

[0029] In the embodiment of the present application, the traffic vehicle 100 is further provided with a noise reduction processing module. The noise reduction processing module is used to perform noise reduction processing on the environmental noise data collected by the sound collection module. The noise reduction processing module can be one or more. For example, the number of noise reduction processing modules can be the same as the number of regions, so that a one-to-one correspondence between the noise reduction processing modules and the regions can be achieved, and each noise reduction processing module performs noise reduction processing on the region corresponding to itself.

[0030] In the embodiment of the present application, the transportation vehicle 100 further includes a directional speaker. The directional speaker is used to realize the directional propagation of the noise reduction signal, thereby realizing the noise reduction processing of the specified area. There can be multiple directional speakers, for example, the number of directional speakers is the same as the number of areas, so that a one-to-one correspondence between directional speakers and areas can be realized, and each directional speaker realizes the noise reduction processing of the area corresponding to itself.

[0031] In the embodiment of the present application, the transportation vehicle 100 is also provided with a sensing module to sense whether there is a passenger in the seat, and the sensing module may be a seat sensor, an infrared sensor, etc. In the embodiment of the present application, the transportation vehicle 100 is also provided with a setting module, and the user can set the noise reduction mode of the transportation vehicle and the noise reduction strategy adopted by different areas in the zoned noise reduction mode by interacting with the setting module.

[0032] Please refer to Figure 2 , which shows a flow chart of a noise reduction method provided by an embodiment of the present application. The method includes the following process.

[0033] S201, collecting environmental noise data.

[0034] In this embodiment, a sound collection module (such as a microphone array) is provided in the cabin of the transportation vehicle, and the environmental noise data is collected through the sound collection module.

[0035] Optionally, the vehicle control sound collection module collects environmental noise data according to a preset sensitivity and a preset sampling frequency. The preset sensitivity is set based on experiments or experience to ensure that noise of different frequency bands and intensities inside and outside the vehicle can be captured. The preset sampling frequency is also set based on actual or experience to ensure the real-time and accuracy of the environmental noise data.

[0036] In some embodiments, after collecting environmental noise data, the vehicle performs signal processing on the environmental noise data through a preset algorithm to determine the type, intensity, and location of the noise source in the environmental noise data. The preset algorithm includes but is not limited to: a recursive average noise estimation algorithm, a sound intensity method, a near-field measurement method, etc., which is not limited in the embodiments of the present application.

[0037] S202: Determine a target area in at least two areas.

[0038] The target area refers to the area where passengers exist. There can be one or more target areas.

[0039] In some embodiments, different seats on the transportation vehicle are equipped with seat sensors. When the seat sensor installed on a certain seat detects the presence of a passenger, the area where the seat is located is determined as the target area. In other embodiments, different areas of the transportation vehicle are equipped with infrared sensors. The infrared sensors are used to detect whether there are passengers in the area. If there are passengers, the area is determined as the target area.

[0040] S203: Obtain a noise reduction strategy corresponding to the target area.

[0041] The noise reduction strategy corresponding to the target area is used to indicate the noise reduction parameters used for noise reduction processing of the target area. The noise reduction strategies corresponding to different target areas may be the same or different. When there are multiple target areas and the noise reduction strategies corresponding to different target areas are different, S203 and S204 are synchronously executed by different sound processing modules to ensure that each target area can be noise-reduced in a timely manner. The process of obtaining the noise reduction strategy corresponding to the target area will be described in the following embodiments.

[0042] S204: Perform noise reduction processing on the target area according to the noise reduction strategy corresponding to the target area and the environmental noise data.

[0043] In an embodiment of the present application, the transportation vehicle performs noise reduction processing on the environmental noise data according to the noise reduction strategy corresponding to the target area, obtains a noise reduction signal, and controls the directional speaker corresponding to the target area to play the noise reduction signal.

[0044] Optionally, the noise reduction processing module performs noise reduction processing on the ambient noise data according to the noise reduction strategy corresponding to the target area through active noise reduction technology to obtain a noise reduction signal, wherein the noise reduction signal has a sound wave direction opposite to that of part of the ambient noise data, so as to offset part of the ambient noise data, thereby achieving the purpose of noise reduction.

[0045] The directional loudspeaker corresponding to the target area is used to control the sound wave direction of the noise reduction signal toward the target area, thereby achieving directional noise reduction for the target area.

[0046] In some embodiments, the vehicle may also set the sound pressure level of the loudspeaker corresponding to the target area to prevent the sound of the noise reduction signal emitted by the loudspeaker corresponding to the target area from being too high or too low.

[0047] It should be noted that in some embodiments, when the target area is the main driving area, if the traffic vehicle is detected to be in an emergency state, the noise reduction process for the target area is terminated. In this way, it can be ensured that the driver's auditory information can be transmitted when the traffic vehicle is in an emergency state.

[0048] The emergency state may include an emergency braking state and a collision state. In some embodiments, the traffic vehicle obtains its own acceleration through an acceleration sensor, and determines whether the traffic vehicle is in an emergency braking state based on the acceleration. In other embodiments, the traffic vehicle also includes a perception module capable of detecting whether it has collided with other traffic vehicles, and the perception module is used to detect whether it has collided with other traffic vehicles. If it has collided with other traffic vehicles, the traffic vehicle is in a collision state.

[0049] In summary, the technical solution provided in the embodiment of the present application divides the cabin of a transportation vehicle into multiple areas. After collecting the environmental noise data, the target area where the passengers exist is first determined, and then the target area is subjected to noise reduction processing according to the noise reduction strategy corresponding to the target area. The noise reduction strategies corresponding to different target areas may be different, that is, zoned noise reduction for the transportation vehicle is achieved, and different noise reduction effects are provided to different areas of the transportation vehicle, thereby meeting the noise reduction needs of passengers in different areas.

[0050] Please refer to Figure 3 , which shows a flow chart of a noise reduction method shown in another embodiment of the present application. The method includes the following process.

[0051] S301, collecting environmental noise data.

[0052] S302: Determine a target area in at least two areas.

[0053] The target area refers to an area where passengers are present. In the embodiment of the present application, the target area includes a main driving area and a non-main driving area.

[0054] S303: When the target area is the main driving area, determine that the noise reduction frequency band is the first noise reduction frequency band.

[0055] In the embodiment of the present application, the noise reduction frequency band refers to the frequency range involved in the noise reduction process of the target area. For example, when the noise reduction frequency band is 1000-2000 Hz, the noise data whose frequency belongs to the above range is suppressed.

[0056] In some embodiments, the vehicle stores a noise reduction frequency band corresponding to the main driving area, and the vehicle directly obtains the noise reduction frequency band corresponding to the main driving area from the local area as the first noise reduction frequency band. The noise reduction frequency band corresponding to the main driving area can be set by the user or by default by the vehicle.

[0057] In other embodiments, the traffic vehicle determines the type of noise signal in the ambient noise data, determines the noise signal to be shielded in the main driving area based on the type of noise signal, and determines the first noise reduction frequency band based on the noise signal to be shielded in the main driving area.

[0058] The type of noise signal can be determined according to the noise source. For example, when the noise source is a person, the type of noise signal is a human voice. Exemplarily, the types of noise signals include human voice, wind sound, rain sound, traffic vehicle sound, and so on. The traffic vehicle determines the noise signal of the first specified type as the noise signal to be shielded. The first specified type refers to the type of noise signal that needs to be shielded in the main driving area that is preset. For example, the first specified type may be wind sound. The traffic vehicle may directly determine the frequency interval to which the noise signal to be shielded belongs as the first noise reduction frequency band, or the traffic vehicle may determine the specified frequency interval containing the frequency interval to which the noise signal to be shielded belongs as the first noise reduction frequency band, and the specified frequency interval is slightly larger than the frequency interval to which the noise signal to be shielded belongs. The first specified type may be set by the user or by default by the traffic vehicle. The setting process of the first specified type will be described in the following embodiments.

[0059] In this embodiment, when the noise signal in the environmental noise data changes, the noise signal to be shielded determined by the traffic vehicle also adapts to the change, and the first noise reduction frequency band determined at this time also adapts to the change, that is, the traffic vehicle can adjust the noise reduction strategy in real time according to the external environment.

[0060] In other possible embodiments, the traffic vehicle determines the frequency interval to which the noise signal of the first specified type belongs as the first noise reduction frequency band.

[0061] S304: When the target area is a non-primary driving area, determine that the noise reduction frequency band is a second noise reduction frequency band.

[0062] The bandwidth of the first noise reduction frequency band is smaller than the bandwidth of the second noise reduction frequency band. In order to ensure driving safety, some sounds in the main driving area cannot be shielded, such as the horn sounds emitted by other vehicles when driving, while passengers in the non-main driving area do not need to pay attention to the above sounds. Therefore, in an embodiment of the present application, the bandwidth of the noise reduction frequency band for noise reduction in the main driving area is controlled to be smaller than the bandwidth of the noise reduction frequency band for noise reduction in the non-main driving area. On the one hand, it can avoid shielding sounds that affect traffic safety, thereby improving driving safety. On the other hand, it enables the noise in the non-main driving area to be more comprehensively suppressed, thereby improving the noise reduction experience in the non-driving area.

[0063] Furthermore, the second noise reduction frequency band is a full frequency band, that is, when the non-main driving area is subjected to noise reduction processing according to the second noise reduction frequency band, all environmental noise data can be suppressed. The first noise reduction frequency band is a partial frequency band, that is, when the main driving area is subjected to noise reduction processing according to the second noise reduction frequency band, part of the environmental noise data can be suppressed.

[0064] In some embodiments, the vehicle stores a noise reduction frequency band corresponding to the non-primary driving area, and the vehicle directly obtains the noise reduction frequency band corresponding to the non-primary driving area from the local area as the second noise reduction frequency band. The noise reduction frequency band corresponding to the non-primary driving area can be set by the user or by default by the vehicle.

[0065] In other embodiments, the traffic vehicle determines the type of noise signal in the ambient noise data, determines the noise signal to be shielded in the non-main driving area based on the type of noise signal, and determines the second noise reduction frequency band based on the noise signal to be shielded in the non-main driving area.

[0066] The traffic vehicle determines the noise signal of the second specified type as the noise signal to be shielded. The second specified type refers to the type of noise signal that needs to be shielded in the non-main driving area that is preset. For example, the second specified type can be the sound of wind, horns, warnings, and engine roars emitted by other traffic vehicles. The traffic vehicle can directly determine the frequency interval to which the noise signal to be shielded belongs as the second noise reduction frequency band, or the traffic vehicle determines the second specified frequency interval containing the frequency interval to which the noise signal to be shielded belongs as the second noise reduction frequency band, and the second specified frequency interval is slightly larger than the frequency interval to which the noise signal to be shielded belongs. The second specified type can be set by the user or by default by the traffic vehicle, and the setting process of the second specified type will be described in the following embodiments.

[0067] In other possible embodiments, the traffic vehicle determines the frequency interval to which the second specified type of noise signal belongs as the second noise reduction frequency band.

[0068] S305: When the target area is the main driving area, determine that the noise reduction intensity is the first noise reduction intensity.

[0069] The Noise Reduction Strength determines the amount of noise the noise reduction process will attempt to reduce. The greater the Noise Reduction Strength, the greater the noise reduction effect.

[0070] In some embodiments, the vehicle stores the noise reduction intensity corresponding to the main driving area, and the vehicle directly obtains the noise reduction intensity corresponding to the main driving area from the local area as the first noise reduction intensity. The noise reduction intensity corresponding to the main driving area can be set by the user or by default by the vehicle.

[0071] S306: When the target area is a non-primary driving area, determine the noise reduction frequency band as a second noise reduction intensity.

[0072] In some embodiments, the vehicle stores the noise reduction intensity corresponding to the non-primary driving area, and the vehicle directly obtains the noise reduction intensity corresponding to the non-primary driving area from the local area as the second noise reduction intensity. The noise reduction intensity corresponding to the primary driving area can be set by the user or by the default setting of the vehicle.

[0073] The first noise reduction intensity is weaker than the second noise reduction intensity. In this way, the noise suppression effect in the non-main driving area is better, providing a quieter environment for the non-main driving area. In addition, the noise suppression effect in the main driving area is poor, avoiding the situation where the driver cannot make correct driving decisions based on the external environment when the external sound is mostly or completely blocked, thereby improving driving safety.

[0074] S307: When the target area is the main driving area, determine that the type of the noise signal to be shielded is a first specified type.

[0075] The type of noise signal to be shielded refers to the type of noise signal that needs to be suppressed. In some embodiments, the vehicle stores the type of noise signal to be shielded corresponding to the main driving area, and the vehicle directly obtains the type of noise signal to be shielded corresponding to the main driving area from the local area as the first specified type. The first specified type may include wind sound. The type of noise signal to be shielded corresponding to the main driving area can be set by the user or by default by the vehicle.

[0076] S308: When the target area is a non-primary driving area, determine that the type of the noise signal to be shielded is a second specified type.

[0077] In some embodiments, the traffic vehicle stores the type of noise signal to be shielded corresponding to the non-main driving area, and the traffic vehicle directly obtains the type of noise signal to be shielded corresponding to the non-main driving area from the local area as the second specified type. The second specified type may include wind sound, rain sound, horn sound, warning sound, and engine roar sound emitted by other traffic vehicles. The type of noise signal to be shielded corresponding to the non-main driving area can be customized by the user or set by default by the traffic vehicle.

[0078] The number of the second designated types is greater than the number of the first designated types, that is, the non-main driving area needs to suppress more noise signals than the main driving area. In this way, the noise suppression effect of the non-main driving area is better, providing a quieter environment for the non-main driving area. In addition, the noise suppression effect of the main driving area is poor, avoiding the situation where the driver cannot make correct driving decisions based on the external environment when the external sound is mostly or completely blocked, thereby improving driving safety.

[0079] S309: Perform noise reduction processing on the target area based on the noise reduction strategy corresponding to the target area and the environmental noise data.

[0080] It should be noted that the noise reduction strategy corresponding to the target area includes at least one of the noise reduction frequency band, the noise reduction intensity and the noise signal to be shielded. Therefore, the transportation vehicle can execute any one of S303, S305, S307 or a combination of at least two of them, and / or execute any one of S304, S306, S308 or a combination of at least two of them.

[0081] In summary, the technical solution provided by the embodiment of the present application, when performing noise reduction processing on the main driving area, the noise reduction frequency band is narrower, the noise reduction intensity is weaker, and the types of noise signals to be shielded are fewer, so that the noise suppression effect on the main driving area is poor, and the situation where the driver cannot make correct driving decisions based on the external environment when the external sound is mostly or completely shielded is avoided, thereby improving driving safety. When performing noise reduction processing on the non-main driving area, the noise reduction frequency band is wider, the noise reduction intensity is stronger, and the types of noise signals to be shielded are more, so that the noise suppression effect on the non-main driving area is better, providing a quieter environment for the non-main driving area.

[0082] Please refer to Figure 4 , which shows a flow chart of a noise reduction method provided by an embodiment of the present application. The method includes the following process.

[0083] S401, collecting environmental noise data.

[0084] S402: Determine a target area in at least two areas.

[0085] The target area is an area where passengers are present.

[0086] S403, obtaining the current noise reduction mode of the vehicle.

[0087] The noise reduction mode of the transportation vehicle includes at least a quiet mode, a zoned noise reduction mode and an automatic mode. In the quiet mode, the transportation vehicle adopts full-frequency noise reduction technology for all areas. In the zoned noise reduction mode, the transportation vehicle adopts different noise reduction strategies for different areas. In the automatic mode, the noise reduction mode of the transportation vehicle is dynamically adjusted according to the driving state of the transportation vehicle. In some embodiments, the noise reduction mode of the transportation vehicle also includes a normal mode. In the normal mode, the transportation vehicle can achieve vehicle noise reduction according to the noise reduction solution provided by the relevant technology.

[0088] In some embodiments, the vehicle obtains its own driving status and determines the current noise reduction mode of the vehicle based on the driving status of the vehicle.

[0089] The driving state of a traffic vehicle includes a moving state and a stopped state. The traffic vehicle obtains its own speed through a speed sensor. If the speed is zero, the traffic vehicle is in a stopped state. If the speed is greater than zero, the traffic vehicle is in a moving state.

[0090] Optionally, the vehicle stores a first correspondence between different driving states and different noise reduction modes. After determining its own driving state, the vehicle searches for the first correspondence to determine the current noise reduction mode of the vehicle. The noise reduction mode corresponding to the moving state is the partition noise reduction mode. The noise reduction mode corresponding to the stopped state is the quiet mode.

[0091] Furthermore, when the vehicle detects that it is in a stopped state, it also detects whether there are passengers in the vehicle within a preset time period. If there are passengers, the noise reduction mode corresponding to the stopped state is obtained as the current noise reduction mode. If not, the noise reduction process is terminated. The preset time period is set based on experiments or experience, for example, 2 minutes.

[0092] In some embodiments, when the vehicle determines that the current noise reduction mode is the automatic mode, the vehicle obtains its own driving state and determines the current noise reduction mode of the vehicle based on the driving state of the vehicle.

[0093] In other embodiments, the vehicle acquires the switch status of at least two noise reduction modes of the vehicle, and determines the noise reduction mode in the on state as the current noise reduction mode of the vehicle. The switch status of at least two noise reduction modes can be set by a user or by default of the vehicle. The setting process of the switch status of at least two noise reduction modes will be described in the following embodiments.

[0094] S404: When the current noise reduction mode of the vehicle is the zone noise reduction mode, obtain a noise reduction strategy corresponding to the target area.

[0095] In the partition noise reduction mode, different noise reduction processing modules are required to perform noise reduction processing on different areas respectively, which consumes more resources. Therefore, in the embodiment of the present application, when the current noise reduction mode is the partition noise reduction mode, the partition noise reduction scheme is executed, which can avoid the partition noise reduction scheme from being continuously turned on, thereby saving energy consumption of transportation vehicles.

[0096] In some embodiments, when the current noise reduction mode of the transportation vehicle is the quiet mode, the whole vehicle is subjected to noise reduction processing according to the noise reduction strategy corresponding to the quiet mode. In some embodiments, when the current noise reduction mode of the transportation vehicle is the normal mode, the whole vehicle is subjected to noise reduction processing according to the noise reduction strategy corresponding to the normal mode. In some embodiments, when the current noise reduction mode of the transportation vehicle is the automatic mode, the transportation vehicle first determines the noise reduction mode based on its own driving state, and then performs noise reduction processing on the whole vehicle according to the noise reduction strategy corresponding to the determined noise reduction mode.

[0097] S405: Perform noise reduction processing on the target area based on the noise reduction strategy corresponding to the target area and the environmental noise data.

[0098] In summary, the technical solution provided in the embodiment of the present application executes the partition noise reduction scheme when the current noise reduction mode of the transportation vehicle is the partition noise reduction mode, thereby saving the energy consumption of the transportation vehicle.

[0099] The following describes the process of setting the noise reduction mode and the process of setting the noise reduction strategy.

[0100] The noise reduction mode setting process includes: receiving a mode setting instruction, the mode setting instruction including a target noise reduction mode; and determining the target noise reduction mode as the current noise reduction mode of the traffic vehicle based on the mode setting instruction.

[0101] In some embodiments, the display module of the transportation vehicle (such as the large central control screen) displays a noise mode setting interface, which includes multiple noise mode options. The transportation vehicle receives a selection signal for a target noise mode option among the multiple noise mode options. The target noise mode corresponding to the target noise mode option is also the current noise mode of the transportation vehicle.

[0102] Combined with reference Figure 5 , which shows a schematic diagram of a noise reduction mode setting interface 50 provided in an embodiment of the present application. The noise reduction mode setting interface 50 includes a partition noise reduction mode 510, a quiet mode 520 and an automatic mode 530, wherein the partition noise reduction mode 510 is the selected target noise mode.

[0103] In other embodiments, the mode setting instruction is a voice instruction, and after the vehicle receives the voice instruction, it performs voice recognition on the voice instruction to determine the target noise reduction mode carried in the voice instruction. For example, the voice signal is "turn on quiet mode".

[0104] The noise reduction strategy setting process includes: displaying the noise reduction strategy setting interface of at least two areas; respectively obtaining the noise reduction strategies set in the noise reduction strategy setting interface of at least two areas; and correspondingly storing the areas and the noise reduction strategies set in the noise reduction strategy setting interface of the areas.

[0105] The noise reduction strategy setting interface of each area includes at least one of the following setting items: a noise reduction frequency band setting item, a noise reduction intensity setting item, and a setting item of the type of noise signal to be shielded. The user interacts with the setting item to set the noise reduction strategy of the area.

[0106] Combined with reference Figure 6 , which shows a noise reduction strategy setting interface 600 corresponding to the partition noise reduction mode. The noise reduction strategy setting interface 600 corresponding to the partition noise reduction mode includes a setting sub-interface 610 for the main driving area and a setting sub-interface 620 for the non-main driving area.

[0107] The setting sub-interface 610 of the main driving area includes a first noise reduction intensity setting item 611 and a first setting item 612 of the noise signal type to be shielded. The user can adjust the progress bar in the first noise reduction intensity setting item 611 to set the noise reduction intensity, wherein in the main driving area, the first noise reduction intensity setting item 611 has an upper limit 613, and the user cannot choose to set the first noise reduction intensity to exceed the above upper limit 613, thereby ensuring that the noise reduction effect does not affect driving safety. The user can select the type of noise signal to be shielded in the first setting item 612 of the noise signal type to be shielded, wherein the noise type that affects driving safety is in a locked state and cannot be selected by the user, that is, in the main driving area, the above noise type that affects driving safety cannot be suppressed.

[0108] The setting sub-interface 620 of the non-main driving area includes a second noise reduction intensity setting item 621 and a second setting item 622 of the noise signal type to be shielded. The setting method of the second noise reduction intensity setting item 621 is the same as that of the first noise reduction intensity setting item 611, however, there is no upper limit for the second noise reduction intensity setting item 621, or the upper limit of the second noise reduction intensity setting item 621 is higher than the upper limit of the first noise reduction intensity setting item 611. The setting method of the second setting item 622 of the noise signal type to be shielded is the same as that of the first setting item 612, and in the non-main driving area, the noise type that affects driving safety can be selected.

[0109] The embodiment of the present application also provides a noise reduction strategy setting interface for the quiet mode, obtains the noise reduction strategy set in the noise reduction strategy setting interface for the quiet mode, and stores the quiet mode and the noise reduction strategy set in the noise reduction strategy setting interface for the quiet mode correspondingly. Among them, the noise reduction strategy setting interface for the quiet mode includes at least one of the following setting items: a noise reduction frequency band setting item, a noise reduction intensity setting item, and a setting item for the type of noise signal to be shielded. The user interacts with the setting item to set the noise reduction strategy for the quiet mode.

[0110] The embodiment of the present application also provides a region setting interface, which includes multiple region division options, receives a selection signal for a target region division method, and divides the cabin into multiple regions according to the target region division method. In this way, the user can customize the region division method of the cabin, thereby achieving refined control of the partition noise reduction scheme. When the target region division method changes, the noise reduction strategy setting interface of the partition noise reduction mode needs to adapt to the change.

[0111] Combined with reference Figure 7, which shows an interface schematic diagram of the area setting interface 700 shown in an embodiment of the present application. The area setting interface 700 includes options for three area division methods. The first area division method (first option 710) divides the cockpit into two areas, namely the main driving area 711 and the non-main driving area 712. The first area division method is a target area division method. The second area division method (second option 720) divides the cockpit into three areas, namely the main driving area 721, the co-pilot area 722 and the back seat area 723. The third area division method (third option 730) divides the cockpit into four areas, namely the main driving area 731, the co-pilot area 732, the main driving back seat area 733, and the co-pilot back seat area 734.

[0112] In summary, the technical solution provided in the embodiments of the present application allows users to customize noise reduction modes, noise reduction strategies for different noise reduction modes, and the area division method of the cabin to achieve personalized settings for traffic vehicle noise reduction.

[0113] Please refer to Figure 8 , which shows a block diagram of a noise reduction device provided by an embodiment of the present application. The device includes: a noise collection module 810, a region determination module 820, a strategy acquisition module 830, and a noise reduction processing module 840.

[0114] The noise collection module 810 is used to collect environmental noise data.

[0115] The area determination module 820 is used to determine a target area among at least two areas, where the target area refers to an area where passengers exist.

[0116] The strategy acquisition module 830 is used to acquire the noise reduction strategy corresponding to the target area.

[0117] The noise reduction processing module 840 is used to perform noise reduction processing on the target area based on the noise reduction strategy corresponding to the target area and the environmental noise data.

[0118] In some embodiments, at least two areas include a main driving area and a non-main driving area, the noise reduction strategy corresponding to the target area includes a noise reduction frequency band, and the strategy acquisition module 830 is used to determine that the noise reduction frequency band is a first noise reduction frequency band when the target area is the main driving area; when the target area is a non-main driving area, determine that the noise reduction frequency band is a second noise reduction frequency band; wherein the frequency band width of the first noise reduction frequency band is smaller than the frequency band width of the second noise reduction frequency band.

[0119] In some embodiments, the strategy acquisition module 830 is used to determine the type of noise signal in the ambient noise data when the target area is the main driving area; determine the noise signal to be shielded in the target area based on the type of noise signal; and determine the first noise reduction frequency band based on the noise signal to be shielded in the target area.

[0120] In some embodiments, the noise reduction strategy corresponding to the target area includes noise reduction intensity, and the strategy acquisition module 830 is used to determine that the noise reduction intensity is a first noise reduction intensity when the target area is a main driving area; when the target area is a non-main driving area, determine the noise reduction frequency band to be a second noise reduction intensity; wherein the first noise reduction intensity is weaker than the second noise reduction intensity.

[0121] In some embodiments, the noise reduction strategy corresponding to the target area includes the type of noise signal to be shielded, and the strategy acquisition module 830 is used to determine that the type of noise signal to be shielded is a first specified type when the target area is a main driving area; when the target area is a non-main driving area, the type of noise signal to be shielded is a second specified type; wherein the number of the first specified type is less than the number of the second specified type.

[0122] In some embodiments, the strategy acquisition module 830 is used to acquire the current noise reduction mode of the traffic vehicle; when the current noise reduction mode of the traffic vehicle is the partition noise reduction mode, the noise reduction strategy corresponding to the target area is acquired.

[0123] In some embodiments, the strategy acquisition module 830 is used to determine the driving state of the traffic vehicle, and determine the current noise reduction mode of the traffic vehicle based on the driving state of the traffic vehicle; or / and, obtain the switch status of at least two noise reduction modes of the traffic vehicle, and determine the noise reduction mode in the on state as the current noise reduction mode of the traffic vehicle.

[0124] In some embodiments, the noise reduction processing module 840 is used to perform noise reduction processing on the environmental noise data based on the noise reduction strategy corresponding to the target area to obtain a noise reduction signal; and control the directional speaker corresponding to the target area to play the noise reduction signal.

[0125] In some embodiments, the target area is the main driving area, and the noise reduction processing module 840 is also used to end the noise reduction processing process for the target area when it is detected that the traffic vehicle is in an emergency state; the emergency state includes an emergency braking state, and / or a collision state.

[0126] In some embodiments, the device further includes: a mode setting module (not shown in the figure). The mode setting module is used to receive a mode setting instruction, the mode setting instruction includes a target noise reduction mode; based on the mode setting instruction, the target noise reduction mode is determined as the current noise reduction mode of the vehicle.

[0127] In some embodiments, the device further includes: a strategy setting module (not shown in the figure). The strategy setting module is used to display the noise reduction strategy setting interface of at least two areas; respectively obtain the noise reduction strategy set in the noise reduction strategy setting interface of at least two areas; and store the area and the noise reduction strategy set in the noise reduction strategy setting interface of the area accordingly.

[0128] To summarize, the technical solution provided in the embodiment of the present application divides the cabin of a transportation vehicle into multiple areas. After collecting the environmental noise data, the target area where the passengers exist is first determined, and then the target area is subjected to noise reduction processing according to the noise reduction strategy corresponding to the target area. The noise reduction strategies corresponding to different target areas may be different, that is, zoned noise reduction is achieved for the transportation vehicle, and different noise reduction effects are provided to different areas of the transportation vehicle, thereby meeting the noise reduction needs of passengers in different areas.

[0129] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and modules can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0130] In several embodiments provided in the present application, the coupling between modules may be electrical, mechanical or other forms of coupling.

[0131] In addition, each functional module in each embodiment of the present application can be integrated into a processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or software functional modules.

[0132] See also Fig. 9 , which shows that the embodiment of the present application also provides a transportation vehicle 900, which includes: one or more multi-core processors 910, a memory 920, and one or more applications. Among them, the one or more applications are stored in the memory 920 and are configured to be executed by the one or more multi-core processors 910, and the one or more applications are configured to execute the method described in the above embodiment.

[0133] The multi-core processor 910 may include one or more processing cores. The multi-core processor 910 uses various interfaces and lines to connect various parts of the entire battery management system, and executes various functions and processes data of the battery management system by running or executing instructions, programs, code sets or instruction sets stored in the memory 920, and calling data stored in the memory 920. Optionally, the multi-core processor 910 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The multi-core processor 910 can integrate one or more combinations of a central multi-core processor 910 (Central Processing Unit, CPU), an image multi-core processor 910 (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the operating system, user interface and application programs; the GPU is responsible for rendering and drawing display content; and the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the multi-core processor 910, but may be implemented separately through a communication chip.

[0134] The memory 920 may include a random access memory 920 (Random Access Memory, RAM), and may also include a read-only memory 920 (Read-Only Memory). The memory 920 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 920 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the various method embodiments described below, etc. The data storage area may also store data created by the traffic vehicle map during use (such as a phone book, audio and video data, chat record data), etc.

[0135] An embodiment of the present application further provides a computer-readable storage medium, in which computer program instructions are stored. The computer program instructions can be called by a processor to execute the method described in the above embodiment.

[0136] The computer-readable storage medium may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read-only memory), an EPROM, a hard disk or a ROM. Optionally, the computer-readable storage medium includes a non-transitory computer-readable storage medium. The computer-readable storage medium has storage space for computer program instructions for executing any method step in the above method. These computer program instructions may be read from or written to one or more computer program products. The computer program instructions may be compressed in an appropriate form.

[0137] The above are only preferred embodiments of the present application, and are not intended to limit the present application in any form. Although the present application has been disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technical personnel in the field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present application. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A noise reduction method, characterized in that: Applied to a transportation vehicle, the cabin of the transportation vehicle is divided into at least two areas, and the method includes: Collect environmental noise data; Determine a target area in at least two of the areas, the target area being an area where passengers are present; Obtaining a noise reduction strategy corresponding to the target area; Based on the noise reduction strategy corresponding to the target area and the environmental noise data, noise reduction processing is performed on the target area.

2. The method according to claim 1, characterized in that The at least two areas include a main driving area and a non-main driving area, the noise reduction strategy corresponding to the target area includes a noise reduction frequency band, and obtaining the noise reduction strategy corresponding to the target area includes: When the target area is the main driving area, determining the noise reduction frequency band to be a first noise reduction frequency band; When the target area is the non-primary driving area, determining the noise reduction frequency band to be a second noise reduction frequency band; The frequency band width of the first noise reduction frequency band is smaller than the frequency band width of the second noise reduction frequency band.

3. The method according to claim 2, characterized in that When the target area is the main driving area, determining the noise reduction frequency band as the first noise reduction frequency band includes: In a case where the target area is the main driving area, determining a type of noise signal in the environmental noise data; Determining a noise signal to be shielded in the target area based on the type of the noise signal; The first noise reduction frequency band is determined based on the to-be-shielded noise signal in the target area.

4. The method according to claim 1, characterized in that: The noise reduction strategy corresponding to the target area includes noise reduction strength, and obtaining the noise reduction strategy corresponding to the target area includes: When the target area is a main driving area, determining the noise reduction intensity to be a first noise reduction intensity; When the target area is a non-primary driving area, determining the noise reduction frequency band to be a second noise reduction intensity; The first noise reduction strength is weaker than the second noise reduction strength.

5. The method according to claim 1, characterized in that The noise reduction strategy corresponding to the target area includes the type of noise signal to be shielded, and obtaining the noise reduction strategy corresponding to the target area includes: In a case where the target area is a main driving area, determining that the type of the noise signal to be shielded is a first specified type; When the target area is a non-primary driving area, determining that the type of the noise signal to be shielded is a second specified type; The number of the first specified type is less than the number of the second specified type.

6. The method according to any one of claims 1 to 5, characterized in that The obtaining of the noise reduction strategy corresponding to the target area includes: Obtaining the current noise reduction mode of the vehicle; When the current noise reduction mode of the transportation vehicle is the zone noise reduction mode, the noise reduction strategy corresponding to the target area is obtained.

7. The method according to claim 6, characterized in that The obtaining of the current noise reduction mode of the vehicle includes: Determining the driving state of the vehicle, and determining a current noise reduction mode of the vehicle based on the driving state of the vehicle; or / and, The switch status of at least two noise reduction modes of the transportation vehicle is obtained, and the noise reduction mode in the turned-on state is determined as the current noise reduction mode of the transportation vehicle.

8. The method according to any one of claims 1 to 5, characterized in that The performing noise reduction processing on the target area based on the noise reduction strategy corresponding to the target area and the environmental noise data includes: Performing noise reduction processing on the environmental noise data based on the noise reduction strategy corresponding to the target area to obtain a noise reduction signal; The directional speaker corresponding to the target area is controlled to play the noise reduction signal.

9. The method according to any one of claims 1 to 5, characterized in that The target area is a main driving area, and after the target area is subjected to noise reduction processing based on the noise reduction strategy corresponding to the target area and the environmental noise data, the method further includes: When it is detected that the traffic vehicle is in an emergency state, the noise reduction process for the target area is terminated; the emergency state includes an emergency braking state, and / or a collision state.

10. The method according to any one of claims 1 to 5, characterized in that The method further comprises: receiving a mode setting instruction, wherein the mode setting instruction includes a target noise reduction mode; The target noise reduction mode is determined as the current noise reduction mode of the transportation vehicle based on the mode setting instruction.

11. The method according to any one of claims 1 to 5, characterized in that The method further comprises: Displaying a noise reduction strategy setting interface for at least two of the areas; Respectively obtaining the noise reduction strategies set in the noise reduction strategy setting interfaces of at least two of the areas; The area and the noise reduction strategy set in the noise reduction strategy setting interface of the area are stored correspondingly.

12. A noise reduction device, characterized in that: The device comprises: Noise collection module, used to collect environmental noise data; An area determination module, used for determining a target area in at least two of the areas, wherein the target area refers to an area where passengers are present; A strategy acquisition module, used to acquire the noise reduction strategy corresponding to the target area; The noise reduction processing module is used to perform noise reduction processing on the target area based on the noise reduction strategy corresponding to the target area and the environmental noise data.

13. A transportation vehicle, characterized in that: include: Memory; One or more processors coupled to the memory; One or more programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs are configured to execute the method according to any one of claims 1-11.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and the computer program instructions can be called by a processor to execute the method according to any one of claims 1 to 11.

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