CN118042344A - In-vehicle adaptive sound reproduction method, sound system and domain controller - Google Patents
In-vehicle adaptive sound reproduction method, sound system and domain controller Download PDFInfo
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Abstract
The application provides an in-vehicle self-adaptive sound reproduction method, a sound system and a domain controller, and relates to the technical field of sound reproduction. The application utilizes a domain controller to acquire environment data indicating cabin environment, analyzes sound replay parameters (sound effect parameters and physical state parameters of each loudspeaker) which are suitable for the environment data, regulates and controls the physical state of each loudspeaker according to the physical state parameters, processes audio signals to be sound replayed according to the sound effect parameters, and finally transmits target audio signals obtained by processing to each loudspeaker regulated and controlled by the physical state, and the loudspeakers carry out sound replay of the target audio signals in the cabin. It can be understood that when the cabin environment changes, the sound reproduction parameters also change correspondingly, that is, the sound reproduction in the application has strong adaptability to different cabin environments, and can obtain the optimal sound reproduction effect in different cabin environments, thereby bringing better acoustic experience for users.
Description
Technical Field
The present application relates to the field of sound reproduction, and in particular, to an in-vehicle adaptive sound reproduction method, an acoustic system, and a domain controller.
Background
The in-vehicle audio system is an important component of an in-vehicle entertainment facility that can be acoustically played back in the cabin of an automobile, thereby providing an excellent, immersive driving experience for the user. In general, the cabin environment is not constant, and is related to acoustic characteristics (such as background noise, direct sound, reflected sound, etc.) in the vehicle and driving conditions of the vehicle (such as driving speed, number of passengers, sitting position, opening and closing of windows and doors, etc.), that is, when the acoustic characteristics in the vehicle and/or the driving conditions of the vehicle change, the cabin environment is different from the previous one, and if the vehicle audio system has only one fixed sound reproduction mode, all cabin environments cannot be adapted, that is, an optimal sound reproduction effect cannot be achieved in various cabin environments, and the acoustic experience of passengers is poor.
In the related art, a plurality of different sound reproduction modes, such as a main driving mode, a full vehicle mode, a rear-row mode and the like, can be configured for the vehicle-mounted sound system, and a user can manually/speech select different sound reproduction modes to adapt to different cabin environments, but the user is required to spontaneously judge the cabin environments and autonomously select the sound reproduction modes, so that complicated operation is brought to the user, the intelligent degree of the whole vehicle is reduced, and when the sound reproduction modes are switched, sound effect parameters of the software layer of the vehicle-mounted sound system are mostly switched, and the vehicle-mounted sound system cannot adapt to different cabin environments well, namely the adaptability to different cabin environments is poor, and therefore the existing sound reproduction scheme in the vehicle is required to be improved.
Disclosure of Invention
The application provides an in-vehicle self-adaptive sound reproduction method, a sound system and a domain controller, and aims to solve the problems that in the related art, the process of switching a sound reproduction mode of a vehicle-mounted sound system is complex, and the adaptability to different cabin environments is poor.
In order to solve the above-mentioned problems in the related art, a first aspect of the present application provides an in-vehicle adaptive sound reproduction method, which is applied to an audio system of an automobile, wherein the audio system includes a domain controller communicatively connected to a bus of the automobile, a speaker module disposed in a cabin of the automobile and communicatively connected to the domain controller, and a sensor module disposed in a cabin and communicatively connected to the domain controller, the speaker module includes a plurality of speakers respectively disposed at different positions in the cabin, and the sensor module is used for detecting riding data of the cabin and acoustic feature data of the interior. The in-vehicle adaptive sound reproduction method of the present application is specifically applied to a domain controller, and includes: acquiring environment data of a cabin, wherein the environment data comprises acoustic characteristic data, riding data and public data of an automobile shared by a bus; analyzing sound reproduction parameters of the sound system adapted to the environmental data, the sound reproduction parameters including sound effect parameters and physical state parameters of each speaker; regulating and controlling the physical state of each loudspeaker according to the physical state parameters, wherein the physical state comprises a starting state and a closing state; acquiring an audio signal to be replayed, and processing the audio signal based on the sound effect parameters to obtain a target audio signal; the target audio signal is transmitted to each speaker in an on state for acoustic playback of the target audio signal in the cabin.
The second aspect of the present application provides an audio system, which is applied to an automobile and comprises a domain controller in communication connection with a bus of the automobile, a speaker module arranged in a cabin of the automobile and in communication connection with the domain controller, and a sensor module arranged in a seat cabin and in communication connection with the domain controller, wherein the speaker module comprises a plurality of speakers respectively positioned at different positions in the seat cabin, and the sensor module is used for detecting riding data of the cabin and acoustic characteristic data inside the cabin. Specifically, the domain controller is configured to: acquiring environment data of a cabin, wherein the environment data comprises acoustic characteristic data, riding data and public data of an automobile shared by a bus; analyzing sound reproduction parameters of the sound system adapted to the environmental data, the sound reproduction parameters including sound effect parameters and physical state parameters of each speaker; regulating and controlling the physical state of each loudspeaker according to the physical state parameters, wherein the physical state comprises a starting state and a closing state; acquiring an audio signal to be replayed, and processing the audio signal based on the sound effect parameters to obtain a target audio signal; the target audio signal is transmitted to each speaker in an on state for acoustic playback of the target audio signal in the cabin.
A third aspect of the present application provides a domain controller comprising a memory and a processor communicatively coupled to the memory, the memory having a computer program stored therein, the processor being configured to invoke the computer program to implement the in-vehicle adaptive sound reproduction method of the first aspect of the present application.
Through implementation of the technical scheme, the domain controller is utilized to acquire environment data capable of indicating the cabin environment, and analyze sound replay parameters (namely sound effect parameters and physical state parameters of the loudspeakers) which are suitable for the environment data, then regulate and control the physical state of the loudspeakers according to the physical state parameters, process audio signals to be sound replayed according to the sound effect parameters to obtain target audio signals, finally transmit the target audio signals to the loudspeakers regulated and controlled by the physical state, and the loudspeakers replay the sound of the target audio signals in the cabin. It can be understood that, because the acoustic playback parameters used in the acoustic playback process are adapted to the environment parameters of the cabin, the acoustic playback performed in the cabin is also adapted to the environment of the cabin, so that when the environment of the cabin changes, the acoustic playback parameters used in the acoustic playback process also change correspondingly, i.e. the acoustic playback in the application has strong adaptability to different cabin environments, can obtain optimal acoustic playback effects in different cabin environments, can bring better acoustic experience to users, and when the environment of the cabin changes, the change of the acoustic playback parameters is spontaneous, and the manual/voice adjustment of the acoustic playback parameters by the users is not required, thereby not only ensuring the intelligent degree of the whole vehicle, but also reducing the operational complexity of the users.
Drawings
In order to more clearly illustrate the technical solutions of the related art or embodiments of the present application, the drawings that are required to be used in the description of the related art or embodiments of the present application will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, but not all embodiments, and that other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a block diagram of an audio system according to an embodiment of the present application;
fig. 2 is a schematic layout diagram of a plurality of speakers in a cabin according to an embodiment of the present application;
fig. 3 is a physical state diagram of a plurality of speakers in a cabin according to an embodiment of the present application;
Fig. 4 is another physical state diagram of a plurality of speakers in a cabin according to an embodiment of the present application;
FIG. 5 is a schematic diagram illustrating a layout of a plurality of acoustic sensors in a cabin according to an embodiment of the present application;
FIG. 6 is a schematic diagram showing a layout of a plurality of optical sensors in a cabin according to an embodiment of the present application;
FIG. 7 is a schematic diagram of a layout of a plurality of mechanical sensors in a cabin according to an embodiment of the present application;
FIG. 8 is a schematic diagram illustrating a layout of a plurality of temperature sensors in a cabin according to an embodiment of the present application;
Fig. 9 is an assembly schematic diagram of a speaker in a cabin according to an embodiment of the present application;
FIG. 10 is an enlarged view of a portion of FIG. 9A according to an embodiment of the present application;
FIG. 11 is a diagram illustrating an exemplary acoustic response data detection provided by an embodiment of the present application;
FIG. 12 is a diagram of another example of acoustic response data detection provided by an embodiment of the present application;
FIG. 13 is a block diagram of a domain controller according to an embodiment of the present application;
Fig. 14 is a flowchart of an in-vehicle adaptive sound reproduction method according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more obvious and understandable, the present application will be clearly and completely described below with reference to the embodiments of the present application and the corresponding drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. It should be understood that the following embodiments of the present application are only for explaining the present application and are not intended to limit the present application, that is, all other embodiments obtained by persons skilled in the art without making any inventive effort based on the embodiments of the present application are within the scope of protection of the present application. Furthermore, the technical features referred to in the embodiments of the present application described below may be combined with each other as long as they do not make a conflict with each other.
In the related art, when the vehicle-mounted sound system switches the sound reproduction mode, a user is required to autonomously judge the cabin environment and autonomously select the sound reproduction mode, so that complicated operation is brought to the user, the intelligent degree of the whole vehicle is reduced, and when the sound reproduction mode is switched, sound effect parameters of the software layer of the vehicle-mounted sound system are mostly switched, and the vehicle-mounted sound system cannot be well adapted to different cabin environments, namely, the vehicle-mounted sound system has poor adaptability to different cabin environments. Therefore, the present application provides an in-vehicle adaptive sound reproduction method and an audio system using the same in the following embodiments to avoid the above-mentioned drawbacks of the related art.
Fig. 1 is a block diagram of a sound system, in some embodiments, the sound system 100 is applied to an automobile and includes a domain controller 120 communicatively connected to a bus 110 of the automobile, a speaker module 130 disposed in a cabin of the automobile and communicatively connected to the domain controller 120, and a sensor module 140 disposed in a cabin and communicatively connected to the domain controller 120, wherein the speaker module 130 includes a plurality of speakers 131 respectively disposed at different positions in the cabin, and the sensor module 140 is used for detecting seating data of the cabin and acoustic characteristic data of the interior. Wherein the riding data can include, but is not limited to, the number of passengers in the cabin and the riding position of each passenger; the acoustic signature data may include, but is not limited to, noise floor signatures, reverberation signatures, direct sound signatures, and reflected sound signatures; bus 110 of the automobile is used to share common data of the automobile and may include, but is not limited to, data related to the status of the vehicle speed, gear, seat, window, sunroof, door.
Specifically, the domain controller 120 stores a computer program which is essentially the in-vehicle adaptive sound reproduction method of the present application, that is, the domain controller 120 implements the in-vehicle adaptive sound reproduction method of the present application by executing the computer program stored in itself. In an actual sound reproduction process, the domain controller 120 may acquire environmental data (including acoustic feature data, seating data, and common data of the car shared by the bus 110) capable of indicating the cabin environment in real time, analyze sound reproduction parameters (including sound effect parameters and physical state parameters of the speakers 131) of the sound system 100 adapted to the environmental data, then acquire an audio signal to be sound reproduced, process the audio signal based on the sound effect parameters to obtain a target audio signal, regulate the physical state of the speakers 131 according to the physical state parameters of the speakers 131, and finally transmit the processed target audio signal to the speakers 131 regulated by the physical state, and sound reproduction of the target audio signal is performed in the cabin by the speakers 131. In the present application, the audio parameters include audio software architecture, mixing matrix, signal stream, equalizer, delay, gain adjustment, phase calibration, reverberation adjustment, dynamic control, etc.; the physical state parameters may include, but are not limited to, a power-on parameter for directing the speaker 131 to enter a power-on state, a power-off parameter for directing the speaker 131 to enter a power-off state, a position parameter for adjusting the position of the speaker 131 within the cabin, a radiation angle parameter for adjusting the radiation angle of the speaker 131; accordingly, the physical states of the speaker 131 include an on state, an off state, a position in the cabin, a radiation angle, and the like.
Therefore, the sound reproduction parameters used in the sound reproduction process are adapted to the environment parameters of the cabin, so that the sound reproduction performed in the cabin is also adapted to the environment of the cabin, when the environment of the cabin is changed, the sound reproduction parameters used in the sound reproduction process are also changed correspondingly, namely, the sound reproduction in the application has strong adaptability to different cabin environments, the optimal sound reproduction effect can be obtained in different cabin environments, better acoustic experience can be brought to users, and when the environment of the cabin is changed, the change of the sound reproduction parameters is spontaneous, the user is not required to actively adjust the sound reproduction parameters, the intelligent degree of the whole vehicle is ensured, and the operational complexity of the users is reduced.
As an example, fig. 2 is a schematic layout diagram of several speakers of the speaker module in a cabin, where the speaker module 130 includes nine speakers 131, which are respectively a first speaker 1311, a second speaker 1312, a third speaker 1313, a fourth speaker 1314, a fifth speaker 1315, a sixth speaker 1316, a seventh speaker 1317, an eighth speaker 1318, and a ninth speaker 1319, a center console near a vehicle head and a placement table near a vehicle tail are typically disposed in the cabin of an automobile, the first speaker 1311 is disposed in the center console, the second speaker 1312 and the third speaker 1313 are respectively located on opposite sides of the center console, the fourth speaker 1314 is disposed on a right front door, the fifth speaker 1315 is disposed on a left front door, the sixth speaker 1316 is disposed on a right rear door, the seventh speaker 1317 is disposed on the left rear door, and the eighth speaker 1318 and the ninth speaker 1319 are respectively located on opposite sides of the placement table. It should be understood that the number of speakers 131 included in the speaker module 130 and the layout of the speakers 131 included in the cabin are determined according to actual requirements, which is not limited solely by the present application.
In this embodiment, the nine speakers 131 are all communicatively connected to the domain controller 120, that is, their physical states can be controlled by the domain controller 120, so that they can be differentiated in different cabin environments. For example, fig. 3 shows a physical state diagram of several speakers in the cabin, when the environment of the cabin is that the primary driver B1 is seated on the primary driver seat and the secondary driver B2 is seated on the secondary driver seat, the domain controller 120 controls the second speaker 1312, the third speaker 1313, the eighth speaker 1318 and the ninth speaker 1319 to be in the on state through the corresponding physical state parameters, and controls the second speaker 1312 and the third speaker 1313 to be respectively located on the opposite sides of the center console, and controls the eighth speaker 1318 and the ninth speaker 1319 to be respectively located on the opposite sides of the object console, and controls the radiation angles of the second speaker 1312, the third speaker 1313, the eighth speaker 1318 and the ninth speaker 1319 to be directed to the center positions between the primary driver B1 and the secondary driver B2 (the process of radiation of the speaker 131 is essentially an acoustic playback process) so as to achieve the purpose of uniformly radiating the primary driver B1 and the secondary driver B2; fig. 4 is another physical state diagram of several speakers in the cabin, when the environment of the cabin is that only the main driver B1 sits on the main driving seat, the domain controller 120 controls the second speaker 1312, the third speaker 1313, the eighth speaker 1318 and the ninth speaker 1319 to be in the on state through corresponding physical state parameters, controls the second speaker 1312 and the third speaker 1313 to be located on the center console and symmetrical with respect to the main driver B1, and controls the eighth speaker 1318 and the ninth speaker 1319 to be located on the object console and symmetrical with respect to the main driver B1, and also controls the radiation angles of the second speaker 1312 and the eighth speaker 1318 to be directed to the right ear of the main driver B1, and the radiation angles of the third speaker 1313 and the ninth speaker 1319 to be directed to the left ear of the main driver B1, so as to achieve the purpose of symmetrically radiating the main driver B1.
As one embodiment, the sensor module 140 includes a plurality of sensors, and the plurality of sensors are respectively located at different positions in the cabin, so that the seating data of the cabin and the acoustic characteristic data inside the cabin can be detected in real time by the sensors. In some implementations of the present embodiment, the plurality of sensors included in the sensor module 140 are all acoustic sensors such as microphones, and the basic function of the acoustic sensors is a sound receiving function, so the acoustic sensors can detect acoustic feature data in the cabin, in addition, a transmitter and a receiver such as ultrasonic waves can be configured for each acoustic sensor, and by transmitting and receiving such as ultrasonic waves, which seats in the cabin take passengers can be easily detected, so that the number of passengers in the cabin and the taking position of each passenger are known, i.e. the taking data of the cabin are known. As one implementation, fig. 5 is a schematic layout diagram of a plurality of acoustic sensors in a cabin, where the sensor module 140 includes four acoustic sensors, which are a first acoustic sensor 1411, a second acoustic sensor 1412, a third acoustic sensor 1413, and a fourth acoustic sensor 1414, respectively, where the first acoustic sensor 1411 is disposed on a side of a front passenger seat close to a right front door, the second acoustic sensor 1412 is disposed on a side of a rear right seat close to a right rear door, the third acoustic sensor 1413 is disposed on a side of a main driver seat close to a left front door, the fourth acoustic sensor 1414 is disposed on a side of a rear left seat close to a left rear door, and all the four acoustic sensors can detect seating data of the cabin and internal acoustic feature data in real time, and transmit the detected acoustic feature data and seating data to the domain controller 120.
In other implementations of the present embodiment, the sensor module 140 includes not only an acoustic sensor, but also at least one of an optical sensor such as an optical lens, a mechanical sensor such as a pressure sensor and an acceleration sensor, and a temperature sensor, where the acoustic sensor is used to detect acoustic characteristic data in the cabin in real time, and the optical sensor, the mechanical sensor, and the temperature sensor are all used to detect riding data in the cabin in real time. It can be understood that when the optical sensor is used to detect the riding data Of the cabin, the optical sensor transmits and receives the light beam through technologies such as Time Of Flight (TOF), so that which seats in the cabin take passengers can be easily detected, and the number Of passengers in the cabin and the riding position Of each passenger are obtained, namely the riding data in the cabin are obtained; when the mechanical sensor is used for detecting the riding data of the cabin, the mechanical sensor can be arranged on the seat in the cabin, when no passenger is riding on the seat, the pressure detected by the mechanical sensor is smaller than or equal to a preset pressure threshold value, and when the passenger is present on the seat, the pressure detected by the mechanical sensor is larger than the preset pressure threshold value, that is, once the pressure detected by the mechanical sensor is larger than the preset pressure threshold value, the passenger can be judged to be riding on the seat, so that the passengers on the seat in the cabin can be easily detected, and the number of the passengers in the cabin and the riding position of each passenger can be obtained, namely the riding data of the cabin can be obtained; when the temperature sensor is used for detecting the riding data of the cabin, the temperature sensor can be arranged on the seat in the cabin, when no passenger is riding on the seat, the temperature detected by the temperature sensor is smaller than or equal to a preset temperature threshold value, and when the passenger is riding on the seat, the temperature detected by the temperature sensor is larger than the preset temperature threshold value, that is, once the temperature detected by the temperature sensor is larger than the preset temperature threshold value, the passenger on the seat can be judged, and thus, the passengers on the seat in the cabin can be easily detected, and the number of passengers in the cabin and the riding position of each passenger can be obtained, namely, the riding data of the cabin can be obtained.
As one implementation manner, fig. 6 is a schematic layout diagram of a plurality of optical sensors in a cabin, when the optical sensors are utilized to detect the riding data of the cabin, the sensor module 140 includes four optical sensors, namely, a first optical sensor 1421, a second optical sensor 1422, a third optical sensor 1423 and a fourth optical sensor 1424, which are all disposed on the shed, the first optical sensor 1421 and the second optical sensor 1422 are respectively disposed near the head and are spaced apart from each other, the third optical sensor 1423 and the fourth optical sensor 1424 are respectively disposed near the tail and are spaced apart from each other, and the four optical sensors can all detect the riding data of the cabin in real time and transmit the detected riding data to the domain controller 120. As another implementation, fig. 7 is a schematic layout diagram of a plurality of mechanical sensors in a cabin, where when the mechanical sensors are used to detect the riding data of the cabin, the sensor module 140 includes four mechanical sensors, namely, a first mechanical sensor 1431, a second mechanical sensor 1432, a third mechanical sensor 1433 and a fourth mechanical sensor 1434, where the first mechanical sensor 1431 is disposed on a front seat, the second mechanical sensor 1432 is disposed on a main driving seat, the third mechanical sensor 1433 is disposed on a rear right seat, the fourth mechanical sensor 1434 is disposed on a rear left seat, and all the four mechanical sensors can detect the riding data of the cabin in real time and transmit the detected riding data to the domain controller 120. As yet another implementation manner, fig. 8 is a schematic layout diagram of a plurality of temperature sensors in a cabin, when the temperature sensors are utilized to detect the riding data of the cabin, the sensor module 140 includes four temperature sensors, namely, a first temperature sensor 1441, a second temperature sensor 1442, a third temperature sensor 1443 and a fourth temperature sensor 1444, wherein the first temperature sensor 1441 is disposed on a front seat, the second temperature sensor 1442 is disposed on a main driving seat, the third temperature sensor 1443 is disposed on a rear right seat, the fourth temperature sensor 1444 is disposed on a rear left seat, and all the four temperature sensors can detect the riding data of the cabin in real time and transmit the detected riding data to the domain controller 120.
As an example, fig. 9 is an assembled schematic view of the speakers in the cabin, fig. 10 is a partially enlarged view of a portion a in fig. 9, each speaker 131 in the speaker module 130 is slidably engaged with the wall of the cabin through a sliding member 150 (for example, a sliding slot 160 is formed on the wall of the cabin, and the sliding member 150 is disposed in the sliding slot 160), and the audio system 100 further includes a plurality of sliding drivers 180 communicatively connected to the domain controller 120, where each sliding driver 180 is in driving connection with one speaker 131, in addition to the above-listed structure. Based on this, when the domain controller 120 regulates the physical state of each speaker 131, it may send a power-on command for guiding it to a power-on state or a power-off command for guiding it to a power-off state to each speaker 131 according to the corresponding physical state parameter, and send a slide command to the slide driver 180 of each speaker 131 that receives the power-on command, and then each slide driver 180 that receives the slide command may drive the corresponding speaker 131 to slide on the wall surface of the cabin according to the corresponding slide command, thereby adjusting the position of each speaker 131 that receives the power-on command in the cabin.
Further, each speaker 131 in the speaker module 130 is rotatably coupled to a corresponding slider 150 (e.g., each speaker 131 is coupled to a respective slider 150 via a hinge 170), and the audio system 100 further includes a plurality of rotary drivers 190 communicatively coupled to the domain controller 120, each rotary driver 190 being drivingly coupled to one speaker 131. Based on this, when the domain controller 120 regulates the physical state of each speaker 131, it may also send a rotation command to the rotation driver 190 of each speaker 131 in the on state according to the corresponding physical state parameter, and then each rotation driver 190 that receives the rotation command may drive the corresponding speaker 131 to rotate according to the respective rotation command, so as to adjust the radiation angle of each speaker 131 in the on state.
As one embodiment, when the domain controller 120 analyzes the sound reproduction parameters adapted to the cabin environment, and adjusts and controls the physical states of the speakers 131 in the speaker module 130 according to the sound reproduction parameters, and processes the audio signals to be sound reproduced according to the sound reproduction parameters to obtain the target audio signals, the sound reproduction of the target audio signals can be performed in the cabin through the speakers 131 in the on-state in the speaker module 130, at this time, the sound reproduction effect in the cabin is adapted to the cabin environment, and is optimal, but the passengers in the cabin cannot move for a long time, so that the passengers can not sit comfortably while sitting, at this time, the number of passengers in the cabin and the sitting position of each passenger are not changed, i.e., the cabin environment is not changed, at this time, the sound reproduction parameters used in the sound reproduction process are not changed, i.e., the sound reproduction effect in the cabin is not changed, but the passengers move in the original position, at this time, the cabin is not moved in the original position, the original position of the cabin is not changed, the optimum, the sound reproduction effect is not changed, even if the sound reproduction effect in the cabin is not moved, the original position of the cabin is not changed, and the sound reproduction effect is not changed, and the optimum is not carried out, and the sound reproduction effect is not changed, and the sound reproduction effect is not carried out in the cabin is not in the cabin, i.e. the sound reproduction in the cabin can be kept at an optimum level all the time.
Specifically, the sensor module 140 of the present embodiment can detect the acoustic response data of each passenger in the cabin in real time in addition to the seating data and the acoustic feature data of the interior of the cabin, and the acoustic response data of each passenger's ear most likely characterizes the listening effect of the passenger, so the sensor module 140 of the present embodiment preferably detects the acoustic response data of each passenger's ear in the cabin in real time. Illustratively, fig. 11 is an exemplary diagram of acoustic response data detection, where when the cabin environment is the primary driver B1 on the primary driver seat and the secondary driver B2 on the secondary driver seat, acoustic response data of the ear of the secondary driver B2 can be detected in real time by the first acoustic sensor 1411, and acoustic response data of the ear of the primary driver B1 can be detected in real time by the third acoustic sensor 1413; fig. 12 is another example diagram of acoustic response data detection, in which acoustic response data of the ear of the primary driver B1 can be detected in real time by the third acoustic sensor 1413 when the environment of the cabin is such that only the primary driver B1 is seated on the primary driver seat.
Based on this, during the actual sound reproduction, when the domain controller 120 adjusts and controls the physical state of each speaker 131 in the speaker module 130 according to the sound reproduction parameters adapted to the cabin environment, and processes the audio signal to be sound reproduced according to the sound reproduction parameters to obtain the target audio signal, and after the sound reproduction of the target audio signal is performed in the cabin through each speaker 131 in the speaker module 130 in the on state, the domain controller 120 may further acquire the acoustic response data of each passenger's ear in the cabin in real time, and compare the acoustic response data of each passenger's ear with the preset expected acoustic response data, so that the sound reproduction parameters can be dynamically adjusted according to the difference between the two, so that the acoustic response data of each passenger's ear accords with the expected acoustic response data.
As an embodiment, fig. 13 is a block diagram of a domain controller, where the domain controller 120 includes a memory 121 and a processor 122, the memory 121 is communicatively connected to the processor 122, and a computer program is stored in the memory 121, and the computer program is an in-vehicle adaptive sound playback method of the present application, that is, the processor 122 may call the computer program stored in the memory 121 to implement the in-vehicle adaptive sound playback method. In addition, it should be noted that, the domain controller 120 may include other structures, such as a communication line 123 for implementing a communication connection between the memory 121 and the processor 122, which are not specifically shown in the present application, besides the memory 121 and the processor 122.
In some implementations of the present embodiment, the processor 122 is composed of an integrated circuit, which may be composed of a single packaged integrated circuit, or may be composed of a plurality of integrated circuits packaged with the same function or different functions, and the processor 122 may include a Central Processing Unit (CPU), a microprocessor, a neural network chip, a digital processing chip, a graphics processor, and any combination of one or more of various control chips. It will be appreciated that the processor 122 belongs to the control core of the domain controller 120, and that the processor 122 connects the various components of the overall domain controller 120 using various interfaces and lines, and implements various functions and data processing of the domain controller 120, such as implementing the adaptive sound reproduction functions of the present application, by running or executing computer programs or modules and invoking data.
In some implementations of the present embodiment, memory 121 includes at least one type of computer-readable storage medium that may include, but is not limited to, flash memory, a removable hard disk, a multimedia card, card memory (e.g., SD memory, DX memory, etc.), magnetic memory, magnetic disk, and optical disk. In these implementations, the memory 121 may be an internal storage unit of the domain controller 120 (such as a mobile hard disk of the domain controller 120), or an external storage device of the domain controller 120, such as a plug-in mobile hard disk, a Smart Memory Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. equipped on the domain controller 120, or the memory 121 may be both an internal storage unit and an external storage device of the domain controller 120; further, the memory 121 may be used not only for storing application software installed in the domain controller 120, various types of data, and computer programs (such as codes implementing the adaptive sound reproduction function of the present application), but also for temporarily storing data that has been output or is to be output; during actual operation of the domain controller 120, the processor 122 may retrieve and execute a computer program stored in the memory 121, thereby implementing the adaptive sound reproduction function of the present application.
The above embodiments are merely preferred implementations of the present application, and are not intended to be the only limitations on the related content of the sound system 100, domain controller 120, etc.; in this regard, those skilled in the art can flexibly set according to the actual application scenario on the basis of the above embodiments. A computer program (i.e., an in-vehicle adaptive sound reproduction method according to the present application) executed by the processor 122 in the domain controller 120 will be described in detail. Fig. 14 is a flowchart of an in-vehicle adaptive sound reproduction method, which in some embodiments includes steps 1401 to 1405 (abbreviated as S1401 to S1405) mainly for spontaneously performing sound reproduction in a cabin of an automobile in conformity with the environment of the cabin to avoid the disadvantage of poor adaptability of sound reproduction to different cabin environments in the conventional scheme, and in the steps below, the present application will be described with the processor 122 in the domain controller 120 as an execution subject.
S1401, acquires environmental data of the cabin.
In some embodiments, the sensor module 140 can detect the riding data and the internal acoustic feature data of the cabin in real time, the bus 110 of the car can share the common data of the car in real time, and the sensor module 140 and the bus 110 of the car are in communication connection with the domain controller 120, so that the domain controller 120 can acquire the riding data, the acoustic feature data and the common data of the car in real time, and the data acquired by the domain controller 120 can indicate the environment of the cabin, so that the data are collectively called as the environmental data of the cabin.
S1402, the sound reproduction parameters of the sound system adapted to the environmental data are analyzed.
In some embodiments, after the domain controller 120 obtains the environmental data of the cabin, it is necessary to analyze the sound reproduction parameters of the sound system 100 adapted to the environmental data, that is, the sound effect parameters adapted to the environment of the cabin and the physical state parameters of the speakers 131 in the speaker module 130. As one embodiment, the process of analyzing the acoustic playback parameters in accordance with the environmental data by the domain controller 120 includes: acquiring a preset lookup table for indicating a correspondence between the environmental data and the sound reproduction parameters of the sound system 100; and searching the sound replay parameters which are suitable for the environment data in a lookup table by taking the environment data as a lookup basis. As another embodiment thereof, the process of analyzing the acoustic playback parameters adapted to the environmental data by the domain controller 120 includes: acquiring a preset mapping function for indicating a correspondence between the environmental data and the sound reproduction parameters of the sound system 100; the environmental data is input into the mapping function, and acoustic playback parameters corresponding to the environmental data output from the mapping function are acquired.
S1403, regulating and controlling the physical state of each loudspeaker according to the physical state parameters.
In some embodiments, after analyzing the sound effect parameters adapted to the cabin environment and the physical state parameters of the speakers 131 in the speaker module 130, the domain controller 120 can regulate the physical state of each speaker 131 according to the physical state parameters of each speaker 131, such as regulating the on or off state of each speaker 131, the position and the radiation angle in the cabin, so that the physical state of each speaker 131 is adapted to the cabin environment, and the subsequent sound playback of each speaker 131 adapted to the cabin environment is facilitated. As one embodiment, the process of adjusting the physical state of each speaker 131 by the domain controller 120 according to the physical state parameter of each speaker 131 includes: according to the physical state parameters of each speaker 131, sending a startup instruction or a shutdown instruction to each speaker 131 to guide each speaker 131 to enter a startup state or a shutdown state; transmitting a sliding instruction to the sliding driver 180 of each speaker 131 receiving the start-up instruction to instruct each sliding driver 180 receiving the sliding instruction to drive the corresponding speaker 131 to slide on the wall surface of the cabin according to the corresponding sliding instruction, thereby adjusting the position of each speaker 131 receiving the start-up instruction in the cabin; a rotation command is sent to the rotation driver 190 of each speaker 131 in the on state, so that each rotation driver 190 receiving the rotation command drives the corresponding speaker 131 to rotate according to the respective rotation command, and thus the radiation angle of each speaker 131 in the on state is adjusted.
S1404, acquiring an audio signal to be acoustically replayed, and processing the audio signal based on the sound effect parameter to obtain a target audio signal.
In some embodiments, after the domain controller 120 adjusts the physical state of each speaker 131 according to the physical state parameters of each speaker 131, it is further required to acquire an audio signal to be replayed, and process the audio signal based on the sound effect parameters adapted to the environment of the cabin to obtain the target audio signal. It should be noted that, between the regulation of the physical state of each speaker 131 according to the physical state parameter of each speaker 131 and the processing of the audio signal based on the sound effect parameter, that is, between S1403 and S1404, there is no clear execution sequence, either one of them may be executed first, or both may be executed simultaneously, which is not limited in the present application.
S1405, transmitting the target audio signal to each speaker in the on state for acoustic playback of the target audio signal in the cabin.
In some embodiments, after processing the audio signal based on the sound effect parameters adapted to the environment of the cabin to obtain the target audio signal, the domain controller 120 may transmit the target audio signal to the speakers 131 in the on state, so as to perform acoustic playback of the target audio signal through the speakers 131 in the cabin, where the performed acoustic playback is adapted to the environment of the cabin. As one embodiment, the process of transmitting the target audio signal to each speaker 131 in the on state by the domain controller 120 includes: performing digital-to-analog conversion on the target audio signal; amplifying the power of the target audio signal after digital-to-analog conversion; the target audio signal after power amplification is transmitted to each speaker 131 in the on state. It will be appreciated that the audio signal to be acoustically replayed and the processed target audio signal belong to digital signals, i.e. the processing of the audio signal based on the sound effect parameters also belongs to digital signal processing, whereas after digital-to-analog conversion of the target audio signal, the resulting target audio signal belongs to analog signals, i.e. the domain controller 120 transmits the target audio signal in the form of analog signals to the respective speakers 131.
As an embodiment, it is also mentioned that if the passenger performs the body movement at the original sitting position without changing the cabin environment, the listening effect of the passenger is also affected, that is, the listening effect of the passenger deviates from the optimal listening effect before the body movement is not performed, so after S1405, the method further includes: acquiring acoustic response data of the edges of each passenger in the seat cabin; and comparing the acoustic response data of the ears of each passenger with preset expected acoustic response data, and dynamically adjusting the acoustic replay parameters according to the difference between the acoustic response data and the expected acoustic response data so that the acoustic response data of the ears of each passenger accords with the expected acoustic response data. Thus, even if the passenger physically moves at the original riding position, the optimum listening effect can be obtained without changing the cabin environment. In addition, for the inexhaustible points in the description of the in-vehicle adaptive sound reproduction method, reference should be made to the foregoing description of the sound system 100, and the description thereof will not be repeated here.
The above embodiments are merely preferred implementations of the present application, and are not the only limitations on the content related to the in-vehicle adaptive sound reproduction method; in this regard, those skilled in the art can flexibly set according to the actual application scenario on the basis of the above embodiments. It will be appreciated that, through implementation of the above embodiment of the present application, the domain controller 120 is utilized to obtain environmental data indicating the cabin environment, and analyze sound reproduction parameters (i.e., sound effect parameters and physical state parameters of each speaker 131) adapted to the environmental data, then regulate and control the physical state of each speaker 131 according to the physical state parameters, and process the audio signal to be acoustically reproduced according to the sound effect parameters to obtain a target audio signal, and finally transmit the target audio signal to each speaker 131 regulated and controlled by the physical state, so as to acoustically reproduce the target audio signal in the cabin through the speakers 131. Therefore, the sound reproduction parameters used in the sound reproduction process are adapted to the environment parameters of the cabin, so that the sound reproduction performed in the cabin is also adapted to the environment of the cabin, when the environment of the cabin is changed, the sound reproduction parameters used in the sound reproduction process are also correspondingly changed, namely, the sound reproduction in the application has strong adaptability to different cabin environments, the optimal sound reproduction effect can be obtained in different cabin environments, better acoustic experience can be brought to users, and when the environment of the cabin is changed, the change of the sound reproduction parameters is spontaneous, the manual/voice adjustment of the sound reproduction parameters by the users is not needed, the intelligent degree of the whole vehicle is ensured, and the operational complexity of the users is reduced.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two, where the software module may be embodied in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the application may be embodied in whole or in part in a computer program product comprising one or more computer instructions that when loaded and executed on a computer, cause the process or function described herein to be performed in whole or in part, and the computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., such as a cable, optical fiber, digital subscriber line, etc.) or wireless (e.g., infrared, wireless, microwave, etc.) means. Computer readable storage media can be any available media that can be accessed by a computer or data storage devices such as servers, data centers, etc. that can be integrated by one or more available media. Usable media may be magnetic media (e.g., floppy disks, hard disks, and magnetic tape), optical media (e.g., DVD), or semiconductor media (e.g., solid state disk), among others.
It should be noted that, the foregoing embodiments of the present application are all described in a progressive manner, and each embodiment focuses on the differences from the other embodiments, and the same/similar parts of each embodiment are referred to each other. It should also be noted that in the present application, relational terms such as first and second are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the various embodiments of the application is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. The in-car self-adaptive sound reproduction method is applied to an acoustic system of an automobile, and the acoustic system comprises a domain controller which is in communication connection with a bus of the automobile and a loudspeaker module which is arranged in a cabin of the automobile and is in communication connection with the domain controller, wherein the loudspeaker module comprises a plurality of loudspeakers which are respectively positioned at different positions in the cabin; the in-vehicle adaptive sound reproduction method is specifically applied to the domain controller and comprises the following steps:
acquiring environmental data of the cabin; wherein the environmental data includes the acoustic feature data, the ride data, and common data of the vehicle shared by the bus;
Analyzing acoustic playback parameters of the sound system that are adapted to the environmental data; wherein the sound reproduction parameters include sound effect parameters and physical state parameters of the speakers;
Regulating and controlling the physical state of each loudspeaker according to the physical state parameters; wherein the physical state comprises a start-up state and a shut-down state;
acquiring an audio signal to be replayed, and processing the audio signal based on the sound effect parameter to obtain a target audio signal;
transmitting the target audio signal to each of the speakers in the on state for acoustic playback of the target audio signal within the cabin.
2. The in-vehicle adaptive sound reproduction method according to claim 1, wherein the analyzing the sound reproduction parameters of the sound system adapted to the environmental data includes:
Acquiring a preset lookup table; wherein the look-up table is used for indicating the corresponding relation between the environment data and the sound reproduction parameters of the sound system;
And searching the sound replay parameters which are suitable for the environment data in the lookup table by taking the environment data as a lookup basis.
3. The in-vehicle adaptive sound reproduction method according to claim 1, wherein the analyzing the sound reproduction parameters of the sound system adapted to the environmental data includes:
Acquiring a preset mapping function; wherein the mapping function is used for indicating the corresponding relation between the environment data and the sound reproduction parameters of the sound system;
Inputting the environment data into the mapping function, and acquiring the sound playback parameters which are output by the mapping function and are suitable for the environment data.
4. The in-vehicle adaptive sound reproduction method of claim 1, wherein each of the speakers is slidably engaged with a wall of the cabin via a slider, the sound system further comprising a plurality of slide drivers communicatively coupled to the domain controller, each of the slide drivers being drivingly coupled to one of the speakers; the physical state further includes a position of the speaker within the pod; the adjusting and controlling the physical state of each loudspeaker according to the physical state parameters comprises the following steps:
sending a startup instruction or a shutdown instruction to each loudspeaker according to the physical state parameters; the power-on instruction is used for guiding the loudspeaker to enter a power-on state, and the power-off instruction is used for guiding the loudspeaker to enter a power-off state;
According to the physical state parameters, a sliding instruction is sent to the sliding driver of each loudspeaker in the starting state; the sliding instruction is used for guiding the sliding driver to drive the corresponding loudspeaker to slide on the wall surface of the cabin so as to adjust the position of the loudspeaker in the cabin.
5. The in-vehicle adaptive sound reproduction method of claim 4, wherein each of the speakers is rotatably engaged with a corresponding one of the sliders, the sound system further comprising a plurality of rotary drivers communicatively coupled to the domain controller, each of the rotary drivers being drivingly coupled to one of the speakers; the physical state further includes a radiation angle of the speaker; the step of adjusting and controlling the physical state of each loudspeaker according to the physical state parameters further comprises the steps of:
Transmitting a rotation instruction to the rotation driver of each loudspeaker in the starting state according to the physical state parameters; the rotation instruction is used for guiding the rotation driver to drive the corresponding loudspeaker to rotate so as to adjust the radiation angle of the loudspeaker.
6. The in-vehicle adaptive sound reproduction method of claim 1, wherein the sensor module is further configured to detect acoustic response data at each passenger in the cabin; after the target audio signal is transmitted to each speaker in the on state, the method further comprises:
acquiring the acoustic response data;
The acoustic playback parameters are dynamically adjusted according to differences between the acoustic response data and desired acoustic response data to conform the acoustic response data to the desired acoustic response data.
7. The in-vehicle adaptive sound reproduction method according to claim 1, characterized in that the transmitting the target audio signal to each of the speakers in the on state includes:
performing digital-to-analog conversion on the target audio signal;
Amplifying the power of the target audio signal after digital-to-analog conversion;
and transmitting the target audio signal after power amplification to each loudspeaker in the starting state.
8. The in-vehicle adaptive sound reproduction method according to claim 1, wherein the sensor module includes a plurality of sensors respectively located at different positions in the cabin, and the plurality of sensors are acoustic sensors; the obtaining environmental data of the cabin comprises:
Acquiring public data of the automobile shared by the buses;
And acquiring the riding data of the cabin detected by the acoustic sensor and the acoustic characteristic data in the cabin.
9. The in-vehicle adaptive sound reproduction method according to claim 1, wherein the sensor module includes a plurality of sensors respectively located at different positions in the cabin, the types of the sensors including an acoustic sensor and at least one of an optical sensor, a mechanical sensor, and a temperature sensor; the obtaining environmental data of the cabin comprises:
Acquiring public data of the automobile shared by the buses;
acquiring acoustic characteristic data in the cabin detected by the acoustic sensor;
And acquiring riding data of the cabin detected by at least one of the optical sensor, the mechanical sensor and the temperature sensor.
10. An acoustic system characterized in that the in-vehicle adaptive sound reproduction method according to any one of claims 1 to 9 is applied to perform sound reproduction in a cabin of an automobile.
11. A domain controller, comprising:
a memory storing a computer program;
a processor, communicatively coupled to the memory, for invoking the computer program to implement the in-vehicle adaptive sound reproduction method of any one of claims 1 to 9.
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