CN110234048B - In-vehicle sound zone control device and method, controller and medium - Google Patents
In-vehicle sound zone control device and method, controller and medium Download PDFInfo
- Publication number
- CN110234048B CN110234048B CN201910108045.3A CN201910108045A CN110234048B CN 110234048 B CN110234048 B CN 110234048B CN 201910108045 A CN201910108045 A CN 201910108045A CN 110234048 B CN110234048 B CN 110234048B
- Authority
- CN
- China
- Prior art keywords
- sound
- audio signal
- vehicle
- sent
- channel number
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention relates to a device and a method for controlling sound zones in a vehicle, a controller and a medium, wherein the device comprises a main control module, a power amplifier module and a plurality of directional transmission modules, wherein a channel corresponds to the power amplifier module and each directional transmission module, and each directional transmission module corresponds to a sound zone in the vehicle; the main control module is configured to judge a channel required to be sent by the audio signal, obtain a channel number to be sent, and send the channel number to be sent and the audio signal to the power amplifier module; the power amplifier module is configured to amplify the audio signal by a preset multiple and send the amplified audio signal to the directional transmission module corresponding to the channel number to be sent; the directional transmission module is configured to directionally transmit the amplified audio signal to a corresponding sound zone. The invention realizes the directional propagation of sound based on the strong directivity of the parametric speaker, so that a driver and passengers in the vehicle only receive the sound related to the driver and the passengers, and the invention is simple and easy to realize, has strong adaptability to the whole vehicle environment and has wider and more flexible application.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted sound systems, in particular to a device and a method for controlling sound zones in a vehicle, a controller and a medium.
Background
As the market for high-end systems in automobiles increases, more and more users are pursuing more comfortable and pleasant in-vehicle acoustic environments. In normal driving situations, various sounds are generated in the vehicle, such as navigation prompts, music, hands-free calls, in-vehicle alarms, and the like, but not all passengers in all locations need to receive all the sounds. For example, navigation prompts and in-vehicle warnings are important to the driver, but may affect the passenger's enjoyment of music, and the passenger's voice of enjoying music, radio, movies, etc., may also affect the driver. Therefore, how to enable the driver and the passenger to have independent sound zones, and realizing the experience of personalized sound in the vehicle is very important.
In the prior art, sound partitioning in a vehicle can be realized by adopting the technology of a Hamman sound independent sound zone and the like, and the technology of the Hamman sound independent sound zone adopts innovative sound design and a complementary digital signal processing system, so that the directional performance of a loudspeaker can be optimized, and the crosstalk of each section in the vehicle can be reduced. However, in the existing independent sound zone solution, a headrest type speaker equipped with a micro speaker technology and a dynamic plane speaker located on the roof are usually required to implement the solution, and the digital signal needs to be specially processed to adapt to the space in the vehicle and the speaker to harmonize music, voice or noise in other areas. The scheme has high requirement on the loudspeaker of the loudspeaker system, has complex algorithm, needs special debugging on different in-vehicle environments and passenger positions, and has poor applicability to the whole vehicle environment.
Disclosure of Invention
The invention aims to provide an in-vehicle sound zone control device and method, a controller and a medium, which realize directional propagation of sound based on strong directivity of a parametric speaker, so that a driver and passengers in a vehicle only receive the sound related to the driver and the passengers.
In order to solve the above technical problem, according to a first embodiment of the present invention, there is provided an in-vehicle sound zone control apparatus, including a main control module, a power amplifier module, and a plurality of directional transmission modules, wherein the main control module is connected to the power amplifier module, the power amplifier module is connected to the plurality of directional transmission modules through a plurality of channels, one channel is provided between the power amplifier module and each of the directional transmission modules, and each of the directional transmission modules corresponds to an in-vehicle sound zone;
the main control module is configured to judge a channel to be sent by an audio signal, obtain a channel number to be sent, and send the channel number to be sent and the audio signal to the power amplifier module;
the power amplifier module is configured to amplify the audio signal by a preset multiple and send the amplified audio signal to a directional transmission module corresponding to the channel number to be transmitted;
the directional transmission module is configured to directionally transmit the amplified audio signal to a corresponding sound zone so that a passenger corresponding to the sound zone receives a corresponding sound.
Furthermore, the directional transmission module comprises a parametric array loudspeaker, the parametric array loudspeaker can directionally transmit the amplified audio signal to a preset human ear area of a corresponding sound area in the vehicle, and the distance between the parametric array loudspeaker and the corresponding human ear area is larger than or equal to a preset safety distance.
Further, the device comprises M number of the sound areas in the vehicle, M is a positive integer greater than or equal to 2, each passenger corresponds to one of the sound areas in the vehicle, the driver corresponds to the first sound area, the mth passenger corresponds to the mth sound area, M =2, 3 … M,
the parametric array loudspeaker corresponding to the first sound area is arranged at the included angle between the instrument desk and the windshield, on two sides of a screen of the instrument panel, on a front row top liner corresponding to the main driver or on an A column corresponding to the main driver;
and the parametric array loudspeaker corresponding to the mth sound area is arranged at the front row top liner, the A column, the rear row top liner, the D column, the tail door or the inner bottom plate corresponding to the passenger.
Furthermore, M sound transmission channels are arranged in the vehicle, M is a positive integer greater than or equal to 2, the channel number 1 corresponds to a driver, the channel number M corresponds to an mth passenger, M =2, 3 … M, the main control module comprises a judging unit configured to judge a channel to be sent by the audio signal, and obtain a channel number to be sent; the method specifically comprises the following steps:
judging the audio signal category, wherein the audio signal category comprises a first audio signal, a second audio signal and a third audio signal, and the first audio signal is only used for being sent to a sound area in a vehicle where a driver is located; the second audio signal is used for being sent to a driver and an in-vehicle sound zone where all passengers in the vehicle are located; the third audio signal is used for sending the specified passenger to the in-vehicle sound zone;
if the audio signal belongs to the first audio signal, the channel number to be sent is 1;
if the audio signal belongs to a second audio signal, the number of the channel to be sent is 1 to M;
and if the audio signal belongs to the third audio signal, the channel number to be sent is the channel number corresponding to the sound zone in the vehicle where the specified passenger is located.
Further, the first audio signal comprises a navigation sound signal and an alarm sound signal;
the second audio signal comprises a music sound signal, a video sound signal and a broadcast sound signal;
the third audio signal comprises a music sound signal, a video sound signal, a broadcast sound signal and a communication sound signal.
According to a second embodiment of the present invention, there is provided a method for controlling sound zones in a vehicle, in which a plurality of sound transmission channels are provided in the vehicle, each channel corresponding to a sound zone, the method including:
judging a channel required to be sent by the audio signal to obtain a channel number to be sent;
amplifying the audio signal by a preset multiple;
and directionally transmitting the amplified audio signal to a sound area corresponding to the channel number to be emitted.
Further, the directionally transmitting the amplified audio signal to the sound area corresponding to the channel number to be emitted includes:
and directionally transmitting the amplified audio signal to a preset human ear area of a sound area corresponding to the channel number to be emitted by adopting a parametric array loudspeaker, wherein the distance between the parametric array loudspeaker and the corresponding human ear area is more than or equal to a preset safety distance.
Further, the vehicle interior includes M of the in-vehicle sound regions, M is a positive integer greater than or equal to 2, each passenger corresponds to one of the in-vehicle sound regions, the driver corresponds to the first sound region, the mth passenger corresponds to the mth sound region, M =2, 3 … M,
the parametric array loudspeaker corresponding to the first sound area is arranged at the included angle between the instrument desk and the windshield, on two sides of a screen of the instrument panel, on a front row top liner corresponding to the main driver or on an A column corresponding to the main driver;
and the parametric array loudspeaker corresponding to the mth sound area is arranged at the front row top liner, the A column, the rear row top liner, the D column, the tail door or the inner bottom plate corresponding to the passenger.
Further, M sound transmission channels are arranged in the vehicle, M is a positive integer greater than or equal to 2, a channel number 1 corresponds to a driver, a channel number M corresponds to an mth passenger, M =2, and 3 … M, and the channel required to be sent by the audio signal is judged to obtain a channel number to be sent; the method comprises the following steps:
judging the audio signal category, wherein the audio signal category comprises a first audio signal, a second audio signal and a third audio signal, and the first audio signal is only used for being sent to a sound area in a vehicle where a driver is located; the second audio signal is used for being sent to a driver and an in-vehicle sound zone where all passengers in the vehicle are located; the third audio signal is used for sending the specified passenger to the in-vehicle sound zone;
if the audio signal belongs to the first audio signal, the channel number to be sent is 1;
if the audio signal belongs to a second audio signal, the number of the channel to be sent is 1 to M;
and if the audio signal belongs to the third audio signal, the channel number to be sent is the channel number corresponding to the sound zone in the vehicle where the specified passenger is located.
Further, the first audio signal comprises a navigation sound signal and an alarm sound signal;
the second audio signal comprises a music sound signal, a video sound signal and a broadcast sound signal;
the third audio signal comprises a music sound signal, a video sound signal, a broadcast sound signal and a communication sound signal.
According to yet another aspect of the invention, a controller is provided comprising a memory and a processor, the memory storing a computer program enabling the implementation of the steps of the method when the program is executed by the processor.
According to yet another aspect of the invention, a computer-readable storage medium is provided for storing computer instructions which, when executed by a computer or processor, implement the steps of the method.
Compared with the prior art, the invention has obvious advantages and beneficial effects. By means of the technical scheme, the device and the method for controlling the sound zone in the vehicle, the controller and the medium can achieve considerable technical progress and practicability, have wide industrial utilization value and at least have the following advantages:
according to the invention, each passenger in the vehicle can have an independent sound area by arranging the plurality of directional transmission modules, directional propagation of sound is realized based on strong directivity of the parametric speaker, and a driver and passengers in the vehicle only receive the sound related to the driver and the passengers. The riding experience of the driver and passengers in the automobile is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of an in-vehicle sound zone control apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic audio propagation diagram for a parametric array speaker;
FIG. 3 is a schematic diagram of audio propagation for a conventional speaker;
fig. 4 is a schematic diagram of a method for controlling a sound zone in a vehicle according to an embodiment of the present invention.
[ notation ] to show
1: and (3) the main control module 2: power amplifier module
3: directional transmission module
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to specific embodiments and effects of an in-vehicle sound zone control device and method, a controller and a medium according to the present invention with reference to the accompanying drawings and preferred embodiments.
The embodiment of the invention provides an in-vehicle sound zone control device, which comprises a main control module 1, a power amplifier module 2 and a plurality of directional transmission modules 3, wherein the main control module 1 is connected with the power amplifier module 2, the power amplifier module 2 is connected with the directional transmission modules 3 through a plurality of channels, one channel corresponds to the space between the power amplifier module 2 and each directional transmission module 3, and each directional transmission module 3 corresponds to an in-vehicle sound zone. The main control module 1 is configured to judge a channel to be sent by an audio signal, obtain a channel number to be sent, and send the channel number to be sent and the audio signal to the power amplifier module 2; the power amplifier module 2 is configured to amplify the audio signal by a preset multiple, and send the amplified audio signal to the directional transmission module 3 corresponding to the channel number to be transmitted; the directional transmission module 3 is configured to directionally transmit the amplified audio signal to the corresponding sound zone so that the passenger corresponding to the sound zone receives the corresponding sound. The device makes driver and passenger possess the independent stereo set district that belongs to oneself, realizes individualized stereo set experience in the car.
The power amplifier module 2 is a basic device in a sound system, and is used for amplifying a weak electrical signal from a signal source (or a sound console) to drive a loudspeaker to make a sound, and specific preset multiples are set according to specific playing requirements of the device, which are not described herein again.
As an example, the directional transmission module 3 includes a parametric array speaker, which has a strong directivity, and the principle of the parametric array speaker is to modulate an audio signal with an ultrasonic carrier signal, regenerate the audio signal by using a nonlinear effect when the ultrasonic carrier is propagated in an air medium, and realize a directional function of the speaker by the strong directivity of the ultrasonic carrier, so as to ensure that a driver and passengers in the vehicle only hear sounds related to the driver and passengers. The parametric array loudspeaker can directionally transmit the amplified audio signals to a preset human ear area of a corresponding sound area in the vehicle, and the specific setting position of the parametric array loudspeaker can be specifically set according to the set area, the preset human ear area and an audio signal propagation circuit. The predetermined ear area is an area where each passenger seat can receive the audio signal transmitted from the corresponding parametric array speaker after normally sitting on the seat, such as the head area of the passenger.
In addition, due to the characteristics of the ultrasonic waves, the parametric array speaker needs to keep a certain distance from the human ear to avoid discomfort such as dizziness of passengers, and therefore, the distance between the parametric array speaker and the corresponding human ear area is greater than or equal to a preset safety distance, which is 300mm as an example. The parametric array loudspeaker is adopted to modulate audible sound to an ultrasonic wave frequency band, directional propagation of the audible sound is realized by utilizing the super-directivity characteristic of ultrasonic waves, the audio propagation schematic diagram of the parametric array loudspeaker is shown in figure 2, the audio propagation schematic diagram of a traditional loudspeaker is shown in figure 3, and the strong directivity of the parametric array loudspeaker can be clearly reflected by comparing the audio propagation schematic diagram shown in figure 2 and figure 3. The embodiment of the invention is based on the directional characteristic of the parametric array loudspeaker, can simply divide the independent sound area in the vehicle only by installing the parametric array loudspeaker, does not need complex operation, has strong adaptability to the whole vehicle environment, and is more widely and flexibly applied.
Assuming that the device includes M sound areas in the vehicle, where M is a positive integer greater than or equal to 2, each passenger corresponds to one sound area in the vehicle, the driver corresponds to a first sound area, the mth passenger corresponds to a mth sound area, and M =2 and 3 … M, as an example, a parametric array speaker corresponding to the first sound area is installed at an angle between an instrument desk and a windshield, on both sides of a dashboard screen, on a front-row top liner corresponding to a main driver, or on an a-pillar corresponding to the main driver, and the sound sent by the parametric array speaker is transmitted to the driver, and at the same time, the driver and a headrest of a main driver seat and the like may block the continuous transmission of the sound, so that other passengers may not hear the sound, and neither a secondary driver nor a rear passenger may be affected. The parametric array loudspeaker corresponding to the mth sound area is installed at the front row top liner, the A column, the rear row top liner, the D column, the tail door or the interior bottom plate corresponding to the passenger, but it can be understood that the above positions are only examples, and corresponding parametric array loudspeakers can be installed as long as the requirements of directionally transmitting sound to the corresponding passenger and enabling the distance between the parametric array loudspeaker and the corresponding ear area to be greater than or equal to the interior position of the vehicle with the preset safety distance are met.
Corresponding to the above example, M sound transmission channels are also provided in the vehicle, where M is a positive integer greater than or equal to 2, the channel number 1 corresponds to the driver, the channel number M corresponds to the mth passenger, and M =2 and 3 … M, where the main control module 1 includes a determination unit configured to determine a channel to be sent by the audio signal, and obtain a channel number to be sent, specifically:
judging the audio signal category, wherein the audio signal category comprises a first audio signal, a second audio signal and a third audio signal, and the first audio signal is only used for being sent to a sound area in a vehicle where a driver is located; the second audio signal is used for being sent to a driver and an in-vehicle sound zone where all passengers in the vehicle are located; the third audio signal is used for sending the specified passenger to the in-vehicle sound zone;
if the audio signal belongs to the first audio signal, the channel number to be sent is 1;
if the audio signal belongs to a second audio signal, the number of the channel to be sent is 1 to M;
and if the audio signal belongs to the third audio signal, the channel number to be sent is the channel number corresponding to the sound zone in the vehicle where the specified passenger is located.
As an example, the first audio signal comprises a navigation sound signal, an alarm sound signal; the second audio signal comprises a music sound signal, a video sound signal and a broadcast sound signal; the third audio signal includes a music audio signal, a video audio signal, a broadcast audio signal, and a call audio signal, and it should be noted that the first audio signal, the second audio signal, and the third audio signal may be mutually converted according to a specific playing requirement. For the second audio signal, the second audio signal can be played through all the parametric array speakers respectively, and a traditional speaker can be additionally arranged for playing the sound corresponding to the second audio signal in the vehicle.
The following further describes the embodiments of the present invention through several specific application scenarios, and the following examples take five cars as examples for illustration:
the first embodiment,
The main control module 1 acquires the navigation sound signal or the alarm sound signal and judges that the navigation sound signal or the alarm sound signal belongs to the first audio signal, at the moment, the main control module 1 continuously transmits the music sound signal to the power module and simultaneously transmits the navigation sound signal or the alarm sound signal, the channel numbers corresponding to the music sound signal are all the channel numbers, and the forehead channel numbers corresponding to the navigation sound signal or the alarm sound signal are 1. After the power amplifier module 2 performs corresponding amplification and information transmission, music continues to be played in the conventional loudspeaker channel or all parametric array loudspeakers, and information such as navigation or alarm is played only in the parametric array loudspeaker channel corresponding to the main driver, under the condition that:
a) driver position: the music player can normally receive new navigation sound or alarm sound while listening to music;
b) other passenger locations in the vehicle, including co-driver passengers and rear passengers: the music can be enjoyed continuously without being influenced by the navigation sound or the alarm sound.
Example II,
The owner drives, vice drive and the back row all has the passenger, when the car is quiet, vice drive passenger opens and watches on-vehicle audio-visual, host system 1 received vice driving area corresponding audio-visual sound signal this moment, and judge that this signal belongs to third audio signal, the channel number is 2, then host system 1 sends audio-visual sound signal to power amplifier module 2, and inform power module to put this information and only play in vice driving parametric array speaker passageway, power amplifier module 2 amplifies and information transmission back, this audio-visual sound signal sends vice driving parametric array speaker, under this condition:
a) driver position: the audio and video can not be heard and is not interfered by any sound;
b) the copilot position: enjoy the video and audio of the independent space;
c) other passenger positions: as well as the driver position, is not disturbed by any sound.
Example III,
The owner drives, vice driving and the back row all have the passenger, when the music of broadcast in the car, this music sound signal is corresponding to the second audio signal, driver and all passengers all listen to this sound promptly, back row left side passenger cell-phone is connected the 1 bluetooth of main control module, and dial the bluetooth telephone, main control module 1 can acquire conversation sound signal this moment, judge this conversation sound signal and be the third audio signal, the corresponding channel number of supposing back row left side passenger position is 3, then the channel number that this conversation sound signal corresponds is 3, and simultaneously, this music sound signal is converted into the third audio signal by the second audio signal, the channel number that corresponds converts other channel numbers except 3. The main control module 1 sends the music sound signal to the power amplifier module 2, and also sends the call sound signal to the power amplifier module 2, the channel number corresponding to the music sound signal is all channel numbers except 3, and the channel number corresponding to the call sound signal is 3. After power amplifier module 2 carries out the amplification that corresponds and information transmission, the music continues to play in all parametric array speaker passageways except back row left side position, and bluetooth telephone information only plays in the parametric array speaker passageway that back row left side position corresponds, under this condition:
a) driver position: the user can continue to enjoy music without being interfered by the sound of the other party of the Bluetooth telephone;
b) the copilot position: the driver can continue to enjoy music as the driver does, and the driver is not interfered by the sound of the other party of the Bluetooth telephone;
c) left position of back row: the Bluetooth telephone can be normally answered, and the music playing is stopped, so that the interference to the communication is reduced;
d) other positions of the back row: the music can be enjoyed continuously as the driving position, and the music can not be interfered by the sound of the other party of the Bluetooth telephone.
Based on the device for controlling the sound zones in the vehicle according to the embodiment of the present invention, an embodiment of the present invention further provides a method for controlling the sound zones in the vehicle, wherein a plurality of sound transmission channels are provided in the vehicle, each channel corresponds to a sound area, as shown in fig. 4, the method includes the following steps:
step S1, judging a channel required to be sent by the audio signal to obtain a channel number to be sent;
step S2, amplifying the audio signal by a preset multiple;
step S2 is implemented by a power amplifier module, which is a basic device in a sound system and is configured to amplify a weak electrical signal from a signal source (in a professional sound system, the signal is from a sound console) to drive a speaker to make a sound, where the specific preset multiple is set according to a specific playing requirement of the device, and is not described herein again.
And step S3, directionally transmitting the amplified audio signal to a sound area corresponding to the channel number to be emitted, so that the passenger corresponding to the sound area receives the corresponding sound.
The method enables the driver and the passengers to have independent sound zones, and personalized in-vehicle sound experience is achieved.
As an example, the step S3 includes: and directionally transmitting the amplified audio signal to a preset human ear area of a sound area corresponding to the channel number to be emitted by adopting a parametric array loudspeaker, wherein the distance between the parametric array loudspeaker and the corresponding human ear area is greater than or equal to a preset safety distance, and the preset safety distance is 300mm as an example. The embodiment of the invention is based on the directional characteristic of the parametric array loudspeaker, can simply divide the independent sound area in the vehicle only by installing the parametric array loudspeaker, does not need complex operation, has strong adaptability to the whole vehicle environment, and is more widely and flexibly applied.
Assuming that a vehicle includes M interior sound regions, where M is a positive integer greater than or equal to 2, each passenger corresponds to one interior sound region, a driver corresponds to a first sound region, an mth passenger corresponds to an mth sound region, and M =2 and 3 … M, as an example, a parametric array speaker corresponding to the first sound region is installed at an angle between an instrument desk and a windshield, on both sides of a dashboard screen, on a front-row top liner corresponding to a primary driver, or on an a-pillar corresponding to the primary driver, and sounds sent by the parametric array speaker are transmitted to the driver, and meanwhile, the driver, a headrest of the primary driver, and the like can block the continuous transmission of the sounds, so that other passengers cannot hear the sounds, and neither a secondary driver nor a rear-row passenger can be affected. The parametric array loudspeaker corresponding to the mth sound area is installed at the front row top liner, the A column, the rear row top liner, the D column, the tail door or the interior bottom plate corresponding to the passenger, but it can be understood that the above positions are only examples, and the parametric array loudspeaker can be installed at the interior position of the vehicle, where the distance between the parametric array loudspeaker and the corresponding ear area is greater than or equal to the preset safety distance, as long as the sound can be directionally transmitted to the corresponding passenger.
Corresponding to the above example, M sound transmission passages are provided in the vehicle, M is a positive integer greater than or equal to 2, the passage number 1 corresponds to the driver, the passage number M corresponds to the mth passenger, M =2, 3 … M, and the step S1 includes:
step S11, judging the audio signal category, wherein the audio signal category comprises a first audio signal, a second audio signal and a third audio signal, and the first audio signal is only used for being sent to an in-vehicle sound area where a driver is located; the second audio signal is used for being sent to a driver and an in-vehicle sound zone where all passengers in the vehicle are located; the third audio signal is used for sending the specified passenger to the in-vehicle sound zone;
step S12, if the audio signal belongs to the first audio signal, the channel number to be sent is 1; and if the audio signal belongs to the second audio signal, the channel number to be sent is 1-M, and if the audio signal belongs to the third audio signal, the channel number to be sent is the channel number corresponding to the sound zone in the vehicle where the specified passenger is located.
As an example, the first audio signal comprises a navigation sound signal, an alarm sound signal; the second audio signal comprises a music sound signal, a video sound signal and a broadcast sound signal; the third audio signal includes a music audio signal, a video audio signal, a broadcast audio signal, and a call audio signal, and it should be noted that the first audio signal, the second audio signal, and the third audio signal may be mutually converted according to a specific playing requirement.
The embodiment of the invention also provides a controller, which comprises a memory and a processor, wherein the memory stores a computer program, and the program can realize the steps of the in-vehicle sound zone control method when being executed by the processor.
Embodiments of the present invention also provide a computer-readable storage medium for storing computer instructions, which when executed by a computer or a processor implement the steps of the in-vehicle sound zone control method.
According to the embodiment of the invention, each passenger in the vehicle can have an independent sound area by arranging the plurality of directional transmission modules, directional propagation of sound is realized based on the strong directivity of the parametric speaker, and the driver and the passenger in the vehicle only receive the sound related to the driver and the passenger in the vehicle.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An in-vehicle sound zone control device, comprising:
the system comprises a main control module, a power amplifier module and a plurality of directional transmission modules, wherein the main control module is connected with the power amplifier module, the power amplifier module is connected with the directional transmission modules through a plurality of channels, one channel corresponds to each directional transmission module, and each directional transmission module corresponds to one sound area in the vehicle;
the main control module is configured to judge a channel to be sent by an audio signal, obtain a channel number to be sent, and send the channel number to be sent and the audio signal to the power amplifier module;
the power amplifier module is configured to amplify the audio signal by a preset multiple and send the amplified audio signal to a directional transmission module corresponding to the channel number to be transmitted;
the directional transmission module is configured to directionally transmit the amplified audio signal to a corresponding sound area, so that a passenger corresponding to the sound area receives a corresponding sound;
the main control module comprises a judging unit and a control unit, wherein M sound transmission channels are arranged in the vehicle, M is a positive integer greater than or equal to 2, the channel number 1 corresponds to a driver, the channel number M corresponds to an mth passenger, M =2 and 3 … M, and the main control module comprises a judging unit which is configured to judge a channel required to be sent by an audio signal to obtain a channel number to be sent; the method specifically comprises the following steps:
judging the audio signal category, wherein the audio signal category comprises a first audio signal, a second audio signal and a third audio signal, and the first audio signal is only used for being sent to a sound area in a vehicle where a driver is located; the second audio signal is used for being sent to a driver and an in-vehicle sound zone where all passengers in the vehicle are located; the third audio signal is used for sending the specified passenger to the in-vehicle sound zone;
if the audio signal belongs to the first audio signal, the channel number to be sent is 1;
if the audio signal belongs to a second audio signal, the number of the channel to be sent is 1 to M;
if the audio signal belongs to the third audio signal, the channel number to be sent is the channel number corresponding to the sound zone in the vehicle where the designated passenger is located;
the first audio signal, the second audio signal, the third audio signal and the channel number can be mutually converted according to specific playing requirements.
2. The in-vehicle sound zone control device according to claim 1,
the directional transmission module comprises a parametric array loudspeaker, the parametric array loudspeaker can directionally transmit the amplified audio signals to a preset human ear area of a corresponding in-vehicle sound area, and the distance between the parametric array loudspeaker and the corresponding human ear area is larger than or equal to a preset safety distance.
3. The in-vehicle sound zone control device according to claim 2,
the device comprises M in-vehicle sound regions, wherein M is a positive integer greater than or equal to 2, each passenger corresponds to one in-vehicle sound region, the driver corresponds to the first sound region, the mth passenger corresponds to the mth sound region, M =2, 3 … M,
the parametric array loudspeaker corresponding to the first sound area is arranged at the included angle between the instrument desk and the windshield, on two sides of a screen of the instrument panel, on a front row top liner corresponding to the main driver or on an A column corresponding to the main driver;
and the parametric array loudspeaker corresponding to the mth sound area is arranged at the front row top liner, the A column, the rear row top liner, the D column, the tail door or the inner bottom plate corresponding to the passenger.
4. The in-vehicle sound zone control device according to claim 1,
the first audio signal comprises a navigation sound signal and an alarm sound signal;
the second audio signal comprises a music sound signal, a video sound signal and a broadcast sound signal;
the third audio signal comprises a music sound signal, a video sound signal, a broadcast sound signal and a communication sound signal.
5. A vehicle interior sound partition control method is characterized in that a plurality of sound transmission channels are arranged in a vehicle, each channel corresponds to a sound area, and the method comprises the following steps:
judging a channel required to be sent by the audio signal to obtain a channel number to be sent;
amplifying the audio signal by a preset multiple;
directionally transmitting the amplified audio signal to a sound area corresponding to the channel number to be emitted;
the method comprises the following steps that M sound transmission channels are arranged in a vehicle, M is a positive integer greater than or equal to 2, a channel number 1 corresponds to a driver, a channel number M corresponds to an mth passenger, M =2 and 3 … M, and the channel required to be sent by an audio signal is judged to obtain a channel number to be sent; the method comprises the following steps:
judging the audio signal category, wherein the audio signal category comprises a first audio signal, a second audio signal and a third audio signal, and the first audio signal is only used for being sent to a sound area in a vehicle where a driver is located; the second audio signal is used for being sent to a driver and an in-vehicle sound zone where all passengers in the vehicle are located; the third audio signal is used for sending the specified passenger to the in-vehicle sound zone;
if the audio signal belongs to the first audio signal, the channel number to be sent is 1;
if the audio signal belongs to a second audio signal, the number of the channel to be sent is 1 to M;
if the audio signal belongs to the third audio signal, the channel number to be sent is the channel number corresponding to the sound zone in the vehicle where the designated passenger is located;
the first audio signal, the second audio signal, the third audio signal and the channel number can be mutually converted according to specific playing requirements.
6. The in-vehicle sound zone control method according to claim 5,
the directionally transmitting the amplified audio signal to the sound area corresponding to the channel number to be emitted includes:
and directionally transmitting the amplified audio signal to a preset human ear area of a sound area corresponding to the channel number to be emitted by adopting a parametric array loudspeaker, wherein the distance between the parametric array loudspeaker and the corresponding human ear area is more than or equal to a preset safety distance.
7. The in-vehicle sound zone control method according to claim 6,
the vehicle interior comprises M interior sound areas, M is a positive integer greater than or equal to 2, each passenger corresponds to one interior sound area, the driver corresponds to the first sound area, the mth passenger corresponds to the mth sound area, M =2, 3 … M,
the parametric array loudspeaker corresponding to the first sound area is arranged at the included angle between the instrument desk and the windshield, on two sides of a screen of the instrument panel, on a front row top liner corresponding to the main driver or on an A column corresponding to the main driver;
and the parametric array loudspeaker corresponding to the mth sound area is arranged at the front row top liner, the A column, the rear row top liner, the D column, the tail door or the inner bottom plate corresponding to the passenger.
8. The in-vehicle sound zone control method according to claim 5,
the first audio signal comprises a navigation sound signal and an alarm sound signal;
the second audio signal comprises a music sound signal, a video sound signal and a broadcast sound signal;
the third audio signal comprises a music sound signal, a video sound signal, a broadcast sound signal and a communication sound signal.
9. A controller comprising a memory and a processor, wherein: the memory stores a computer program enabling to carry out the steps of the method of any one of claims 5 to 8 when executed by the processor.
10. A computer-readable storage medium for storing computer instructions, characterized in that: the instructions, when executed by a computer or processor, implement the steps of the method of any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910108045.3A CN110234048B (en) | 2019-02-02 | 2019-02-02 | In-vehicle sound zone control device and method, controller and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910108045.3A CN110234048B (en) | 2019-02-02 | 2019-02-02 | In-vehicle sound zone control device and method, controller and medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110234048A CN110234048A (en) | 2019-09-13 |
| CN110234048B true CN110234048B (en) | 2021-07-27 |
Family
ID=67860093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910108045.3A Active CN110234048B (en) | 2019-02-02 | 2019-02-02 | In-vehicle sound zone control device and method, controller and medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110234048B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111698613A (en) * | 2020-06-18 | 2020-09-22 | 重庆清文科技有限公司 | Vehicle-mounted sound control method based on sound field segmentation |
| CN114915874B (en) * | 2021-02-10 | 2023-07-25 | 北京全景声信息科技有限公司 | Audio processing method, device, equipment and medium |
| CN113271564B (en) * | 2021-04-27 | 2023-02-28 | 斑马网络技术有限公司 | Method for paralleling telephone and music based on vehicle machine Bluetooth module |
| CN113473311A (en) * | 2021-07-01 | 2021-10-01 | 中汽研（天津）汽车工程研究院有限公司 | In-vehicle multimedia sound zone control device and method |
| CN113721881A (en) * | 2021-08-19 | 2021-11-30 | 浙江鸿泉电子科技有限公司 | Sound output control method and device |
| CN113852892B (en) * | 2021-09-07 | 2023-02-28 | 歌尔科技有限公司 | Audio system and control method and device thereof |
| CN113766057A (en) * | 2021-10-08 | 2021-12-07 | 中国第一汽车股份有限公司 | In-vehicle communication method, device and system and vehicle |
| CN114194128A (en) * | 2021-12-02 | 2022-03-18 | 广州小鹏汽车科技有限公司 | Vehicle volume control method, vehicle, and storage medium |
| CN114430498B (en) * | 2021-12-31 | 2023-07-18 | 惠州华阳通用智慧车载系统开发有限公司 | Car machine double-zone audio system and control method |
| CN114501234A (en) * | 2022-04-08 | 2022-05-13 | 远峰科技股份有限公司 | Intelligent cabin domain multi-tone zone Bluetooth audio playing method and device |
| CN115065911A (en) * | 2022-06-13 | 2022-09-16 | 中国第一汽车股份有限公司 | Audio control system, audio control method, audio control device, audio control equipment and audio control medium |
| CN116311704A (en) * | 2023-03-23 | 2023-06-23 | 广东保伦电子股份有限公司 | Directional alarm method, device and equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202871308U (en) * | 2012-10-09 | 2013-04-10 | 兰州吉利汽车工业有限公司 | Audio play system of automobile |
| CN204795561U (en) * | 2015-03-25 | 2015-11-18 | 北京芝视界科技有限公司 | On -vehicle sound system of ultrasonic wave directive property |
| CN207219028U (en) * | 2017-09-21 | 2018-04-10 | 潍坊智显光电科技有限公司 | Cartborne ultrasound ripple orients pickup system |
| CN109218894A (en) * | 2017-06-29 | 2019-01-15 | 长城汽车股份有限公司 | Vehicle-mounted orientation sound system, control method and vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2611213B1 (en) * | 2011-12-29 | 2015-08-26 | Harman Becker Automotive Systems GmbH | Sound system with individual playback zones |
-
2019
- 2019-02-02 CN CN201910108045.3A patent/CN110234048B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202871308U (en) * | 2012-10-09 | 2013-04-10 | 兰州吉利汽车工业有限公司 | Audio play system of automobile |
| CN204795561U (en) * | 2015-03-25 | 2015-11-18 | 北京芝视界科技有限公司 | On -vehicle sound system of ultrasonic wave directive property |
| CN109218894A (en) * | 2017-06-29 | 2019-01-15 | 长城汽车股份有限公司 | Vehicle-mounted orientation sound system, control method and vehicle |
| CN207219028U (en) * | 2017-09-21 | 2018-04-10 | 潍坊智显光电科技有限公司 | Cartborne ultrasound ripple orients pickup system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110234048A (en) | 2019-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110234048B (en) | In-vehicle sound zone control device and method, controller and medium | |
| CN101176382B (en) | System and method for creating personalized sound zones | |
| KR100799783B1 (en) | Vehicle loudspeaker array | |
| US20050213786A1 (en) | Acoustic system for vehicle and corresponding device | |
| US9628894B2 (en) | Audio entertainment system for a vehicle | |
| US10629195B2 (en) | Isolation and enhancement of short duration speech prompts in an automotive system | |
| US11503401B2 (en) | Dual-zone automotive multimedia system | |
| JP2007019980A (en) | Audio sound calming device | |
| EP1886876B1 (en) | Onboard audio visual system | |
| US7113602B2 (en) | Apparatus for adjustable positioning of virtual sound source | |
| JP2006270302A (en) | Sound reproducing device | |
| JP2022516058A (en) | Hybrid in-car speaker and headphone-based acoustic augmented reality system | |
| JP3410244B2 (en) | Automotive sound system | |
| JPH05191342A (en) | On-vehicle acoustic device | |
| JP4466010B2 (en) | In-vehicle 5-channel audio device | |
| JP3207666B2 (en) | In-car audio equipment | |
| JP6091247B2 (en) | In-vehicle audio system and computer program | |
| JP4600948B2 (en) | In-vehicle sound reproduction device | |
| CN111405420A (en) | Vehicle sound system, control method and vehicle | |
| KR101673787B1 (en) | Sound output system for vehicle | |
| CN220053676U (en) | Vehicle-mounted playing system and vehicle | |
| US11647316B2 (en) | Near to the ear subwoofer | |
| US20050041820A1 (en) | Method of mounting and driving speakers | |
| CN113590077A (en) | Vehicle playback system and method, vehicle, and storage medium | |
| JPH05191305A (en) | On-vehicle acoustic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |