KR20170016902A - Vehicle and method of controlling the same - Google Patents

Abstract

The present invention provides a vehicle, comprising: a first controller providing a media sound source through a first virtual speaker; and a second controller providing an event sound source through a second virtual speaker formed on a layer different from the first virtual speaker when the event sound source is inputted. The present invention efficiently transmits the sound sources.

Description

[0001] VEHICLE AND METHOD OF CONTROLLING THE SAME [0002]

To a vehicle capable of providing stereo sound and a control method thereof.

The car is fitted with an audio system to allow the driver to listen to good quality music on demand. The audio system includes a radio, a cassette, a compact disc player (CDP), or an MP3 player to provide a variety of sounds to the vehicle, eliminating the driver's boredom.

Meanwhile, the vehicle can transmit predetermined information to the driver using the audio system. Specifically, the vehicle provides a warning tone to guide various information necessary for driving using an audio system, but may provide a warning sound to the driver to recognize a dangerous situation.

As described above, various sounds can be provided through the audio system to improve the convenience of the driver. However, there is a problem that it is difficult to efficiently transmit a plurality of sound sources according to various sound sources transmitted through the audio system.

The present invention provides a vehicle and a control method thereof that efficiently transmit a plurality of sound sources.

According to one aspect of the present invention, there is provided a vehicle comprising: a plurality of speakers provided at different heights; a plurality of speakers for controlling outputs of the plurality of speakers to provide a first sound source through a first virtual speaker; And a sound controller for providing a second sound source through a second virtual speaker formed at another position.

At this time, the position of the first virtual speaker and the position of the second virtual speaker may be set according to the recognition priorities of the first sound source and the second sound source. Here, the priority of recognition may be set according to the perceived importance of the driver.

In addition, the sound controller can set a layer in which the first virtual speaker and the second virtual speaker are formed according to the recognition priorities of the first sound source and the second sound source.

Further, the sound controller can set the virtual speaker corresponding to the sound source having the highest priority among the first sound source and the second sound source in the layer corresponding to the face height of the driver.

Further, if the recognition priority of the second sound source is higher than the recognition priority of the first sound source, the sound controller can set the second virtual speaker to a higher layer than the first virtual speaker.

In addition, the sound controller can set the plane coordinates at which the first virtual speaker and the second virtual speaker are formed according to the recognition priorities of the first sound source and the second sound source.

Further, the sound controller can set the plane coordinates of the virtual speaker corresponding to the sound source having the highest priority among the first sound source and the second sound source to be closer to the driver.

The sound source controller can determine the frequency characteristics of the first sound source and the second sound source according to the recognition priority order of the first sound source and the recognition priority order of the second sound source.

The sound source controller can set the frequency of the second sound source having a higher recognition priority than the first sound source to be higher than the frequency of the first sound source.

In addition, the speaker may include an upper speaker disposed on a ceiling of the vehicle, and a lower speaker disposed lower than the upper speaker.

In addition, the sound source controller can reset the positions of the first virtual speaker and the second virtual speaker according to the changed priorities when the recognition priorities of the first sound source and the second sound source are changed.

The first sound source and the first sound source are one of a media sound source for providing media, a talking sound source for providing a call, a guidance sound source for providing information, and a warning sound source for notifying a dangerous situation. The second sound source may be a different sound source.

According to another aspect of the present invention, there is provided a vehicle comprising: a plurality of speakers provided at different heights; a plurality of speakers for controlling a plurality of speakers to form a first virtual speaker; And a controller, wherein when the second sound source is input, a second virtual speaker is formed at a position different from that of the first virtual speaker to provide a second sound source.

In addition, the sound controller can determine the layer in which the second virtual speaker is to be formed by comparing the recognition priority of the first sound source with the recognition priority of the second sound source.

In addition, the sound controller can set the layer of the second virtual speaker to a layer corresponding to the height of the face of the driver, wherein the recognition priority of the second sound source is higher than the recognition priority of the first sound source.

Further, the sound controller can set the layer of the first virtual speaker to be lower than the layer of the second virtual speaker.

Further, the sound controller can determine the plane coordinates of the second virtual speaker and the second virtual speaker by comparing the recognition priority of the first sound source with the recognition priority of the second sound source.

Also, the sound controller sets the plane coordinates of the second virtual speaker so that the recognition priority of the second sound source is higher than the recognition priority of the first sound source, and the second virtual speaker is formed at a position closer to the driver than the first virtual speaker .

Also, the tone generator controller can determine the frequency characteristics of the first tone generator and the second tone generator according to the recognition priorities of the first tone generator and the second tone generator.

According to an aspect of the present invention, there is provided a method of controlling a vehicle, the method comprising: providing a media sound source through a first virtual speaker formed using a plurality of speakers; And a second providing step of providing an event sound source through a second virtual speaker formed at a position different from the first virtual speaker.

Here, the event sound source may be at least one of a voice source for providing a call, a guide sound source for providing information, and a warning sound source for notifying a dangerous situation.

In addition, the second providing step may include setting the second virtual speaker to a layer corresponding to the face of the driver, and setting the first virtual speaker to a lower layer than the second virtual speaker.

In addition, the second providing step may include setting a plane position of the first virtual speaker and the second virtual speaker such that the second virtual speaker is formed at a position adjacent to the driver than the first virtual speaker.

In addition, the second providing step may include resetting the second virtual speaker to a position adjacent to the driver as the perceived importance of the event sound increases.

In addition, the second providing step may include resetting the first virtual speaker to a position spaced apart from the driver as the perceived importance of the event sound increases.

In the second providing step, the event sound source may be output at a high tone, and the media sound source may be output at a low tone.

In addition, the second providing step may include adjusting an output period of the event sound source.

It is possible to improve the perception of the sound source by the driver by providing the vehicle and the control method thereof in which a plurality of sound sources are provided in different layers.

1 is a view schematically showing a vehicle according to an embodiment.
2 is a view schematically showing an interior of a vehicle according to an embodiment.
3 is a control block diagram for explaining a main configuration of a vehicle according to an embodiment.
4 is a diagram for explaining an example of a guide sound source provided in the navigation apparatus.
5 is a diagram for explaining an example of a warning sound source provided in the main processor.
6 is a view for explaining a speaker provided in a vehicle according to an embodiment.
7 is a side view of the vehicle in which the speaker arrangement of the vehicle according to one embodiment is shown.
7 is a perspective view schematically showing a virtual layer formed inside the vehicle.
8 is a front view schematically showing a virtual layer formed inside the vehicle.
9 is a flowchart schematically showing a method of providing sound of a vehicle according to an embodiment.
FIG. 10 is a diagram for explaining a layer change of a virtual speaker. FIG.
11 is a diagram illustrating a sound controller according to an embodiment.
12 is a flowchart illustrating a method of setting a virtual speaker according to an embodiment.
13 is a diagram for explaining the setting of the plane position of the virtual speaker.
14 is a diagram showing an example of the frequency characteristic setting of the virtual speaker.
FIG. 15 is a diagram for explaining an output channel selection when the virtual speaker is located in the first virtual layer.
16 is a diagram showing an embodiment of a parameter look-up table.
17 is a view showing a sound controller according to another embodiment.
18 is a diagram for explaining switching of the sound source to be output by the sound source converter.
19 is a view showing a sound controller according to another embodiment.
20 is a diagram for explaining frequency filtering by an equalizer.
21 is a diagram showing a change in position of a virtual speaker.
22 is a view showing the operation of the speaker when providing a media sound source in which the low-frequency region is removed.
23 is a diagram showing audio signal output when providing a media sound source in which the bass region is removed.
24 is a diagram for explaining the position of a virtual speaker when a plurality of event sounds are input.
25 and 26 are diagrams for explaining dynamic allocation of a virtual layer.
Fig. 27 is a diagram showing another embodiment of a method for providing sound of a vehicle. Fig.
FIGS. 28 and 29 are views for explaining a change in position of a virtual speaker according to the sound providing method of FIG.

Brief Description of the Drawings The advantages and features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described hereinafter with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. In order to clearly explain the present invention in the drawings, parts not related to the description will be omitted.

Prior to a specific description of the vehicle according to the embodiment, the overall configuration of the vehicle will be described.

FIG. 1 is a view schematically showing a vehicle according to an embodiment, and FIG. 2 is a view schematically showing the inside of a vehicle according to an embodiment.

Referring to Fig. 1, a vehicle 1 includes a body forming an appearance of the vehicle 1, wheels 12 and 13 for moving the vehicle 1, and the like.

The vehicle body includes a hood 11a for protecting various devices necessary for driving the vehicle 1 such as an engine, a roof panel 11b for forming an indoor space, a trunk lid 11c provided with a storage space, A front fender 11d and a quarter panel 11e. A plurality of doors 15 joined to the vehicle body by a white paper may be provided on the side surface of the vehicle body 11. [

A front window 19a is provided between the hood 11a and the roof panel 11b to provide a view of the front of the vehicle 1 and a rear window is provided between the roof panel 11b and the trunk lid 11c A rear window 19b may be provided. Further, on the upper side of the door 15, a side window 19c for providing a side view can be provided.

A headlamp 15 for illuminating the vehicle 1 in the traveling direction of the vehicle 1 may be provided in front of the vehicle 1. [

A turn signal lamp 16 for indicating the traveling direction of the vehicle 1 may be provided on the front and rear of the vehicle 1. [

The vehicle 1 can flicker the direction indicator lamp 16 and display it in the traveling direction thereof. Further, a tail lamp 17 may be provided at the rear of the vehicle 1. [ The tail lamp 17 is provided behind the vehicle 1 and can display the gear shift state of the vehicle 1, the brake operation state, and the like.

2, a driver's seat DS and a passenger's seat PS may be provided inside the vehicle 1 and may include a steering wheel 30 for operating the direction of the vehicle 1, 1 is provided with various instruments for controlling the operation of the vehicle 1 and displaying the running information of the vehicle 1. The dashboard 40 shown in Fig.

Display units 41 and 41 are provided at the center of the dashboard 40 to provide information related to the vehicle 1 and an interface for inputting control commands to the vehicle 1. [ The display unit 41 may be implemented as a liquid crystal display (LCD) panel, a light emitting diode (LED) panel, or an organic light emitting diode (OLED) panel. It is not.

The dashboard 40 is provided with a center fascia 42 provided with an operating device for controlling various devices provided in the vehicle 1 including the air conditioner, a blowing port 43 for blowing air into the inside of the vehicle 1, May be provided.

FIG. 3 is a control block diagram for explaining a main configuration of a vehicle according to an embodiment. FIG. 4 is a view for explaining an example of a guide sound source provided in a navigation device, Fig.

3, a vehicle 1 according to an embodiment includes a speaker 100, a sound controller 300, a media device 210, a navigation device 220, a communication device 230, a storage device 260, A proximity sensor 240, and a main processor 250.

At this time, the sound controller 300, the media device 210, the navigation device 220, the communication device 230, the storage device 260, the proximity sensor 240, and the main processor 250 are connected to the data bus 270, Lt; / RTI >

The sound controller 300 receives the sound source to be output, generates an acoustic signal corresponding to the sound source to be output to the speaker 100, and provides the sound source to the speaker 100 by applying the generated sound signal to the speaker 100.

The output target sound source refers to a sound source to be provided to the inside of the vehicle 1 through the sound controller 300. For example, a media source for providing media such as a lyo, music, etc., A guide sound source for providing information, or a warning sound source for notifying a dangerous situation may be output destination sound sources. The sound controller 300 will be described in detail below.

The media device 210 provides a media sound source. For example, the media device 210 may extract media sources from audio media such as radio, compact disc, MP3, and the like.

In addition, the media device 210 may extract media sources from video media such as movies and digital multimedia broadcasting (DMB).

The media sound source output from the media device 210 is transmitted to the sound controller 300 through the data bus 270.

The navigation device 220 guides the route to the destination. The navigation device 220 can detect the current position of the vehicle 1 and search for the current position of the vehicle 1 and the route to the set destination. An optimal path search algorithm may be used for the path search to the destination.

In addition, the navigation device 220 can provide a route to a destination via the display units 41 and 41, and can provide a route to a destination through voice guidance on the route to the destination.

For voice guidance, the navigation device 220 can generate and output a guide sound source. The guidance sound source output from the navigation device 220 is transmitted to the sound controller 300 through the data bus 270. [

For example, when it is necessary to change the running direction of the vehicle 1 as shown in FIG. 4A, the navigation device 220 is "left in front of 100M." Or the like, to provide a voice guidance to the driver.

In addition, if there is a speed camera at the front as shown in FIG. 4B, the navigation device 220 may display a message "Observe the safety speed." Or the like, to provide a voice guidance to the driver.

Referring again to FIG. 3, the communication device 230 can transmit and receive data with an external device. The communication device may be connected to an external device through a wired / wireless communication module and a short-range communication module, and may transmit data to or receive data from the external device.

For example, the communication device 230 receives a guidance sound source or a warning sound source from an external telematics server, and transmits a guidance sound source or a warning sound source received via the data bus 270 to the sound controller 300 .

Also, the communication device 230 may be connected to the driver's portable terminal, and may perform a hands-free function of receiving a voice source from the portable terminal or transmitting voice collected through a microphone provided in the vehicle 1. [

For this, the portable terminal and the communication device 230 may be connected by a Bluetooth communication protocol, but the connection method with the portable terminal is not limited thereto.

A plurality of proximity sensors 240 are provided as shown in FIG. The proximity sensor 240 can detect the distance to nearby objects by using infrared rays or ultrasonic waves, but the proximity sensor 240 is not limited thereto. Here, the surrounding objects may be obstacles, pedestrians, surrounding vehicles, and the like.

The main processor 250 controls the overall operation of the vehicle 1. [ Specifically, the main processor 250 can control other devices or controllers provided inside the vehicle 1. [ The main processor 250 may be implemented as an array of a plurality of logic gates and may include a memory in which a program to be executed in the main processor 250 is stored.

Also, the main processor 250 can recognize the dangerous situation to the driver through voice guidance. Specifically, the main processor 250 may generate a warning sound source for notifying a dangerous situation, and may transmit the generated warning sound source to the sound controller 300 through the data bus 270.

For example, the main processor 250 may generate a warning sound source based on the information about the surrounding objects detected by the proximity sensor 240. For example,

As shown in FIG. 5A, when the vehicle 1 is reversed, a warning sound source may be generated to notify the distance between the obstacle W detected at the rear of the vehicle 1 and the vehicle 1. Specifically, the main processor 250 can analyze the position of the obstacle and the distance between the obstacle W and the vehicle 1 based on the sensing value of the proximity sensor 240, and generate a corresponding warning sound source .

In addition, as shown in FIG. 5B, it is possible to generate a warning sound source for notifying the distance to the traveling vehicle V around the vehicle 1 while driving. Specifically, the main processor 250 analyzes the presence or absence of the nearby vehicle V and the distance to the nearby vehicle V based on the sensing value of the proximity sensor 240, and generates a warning sound source corresponding thereto have.

Referring again to FIG. 3, the vehicle 1 may further include a storage device 260. The storage device 260 stores various data necessary for driving the vehicle 1 and may be a high-speed random access memory, a magnetic disk, an SRAM, a DRAM, a ROM, ROM, or the like, but is not limited thereto.

3, the main processor 250 and the storage 260 are separately configured. However, the main processor 250 and the storage 260 may be implemented as a single module.

In addition, it should be understood that the media device 210, the navigation device 220, and the communication device 230 may be implemented as a single device.

Before describing the sound controller 300 according to one embodiment, the speaker 100 provided in the vehicle 1 will be described in detail.

Fig. 6A is a plan view schematically showing a speaker provided in a vehicle according to an embodiment, Fig. 6B is a side view schematically showing a speaker provided in a vehicle according to an embodiment, Fig. 6C is a cross- 1 is a front view schematically showing a speaker provided.

As shown in FIGS. 2 and 6, a plurality of speakers 100 may be provided inside the vehicle. The sound controller 300 controls a plurality of loudspeakers provided inside the vehicle to provide stereoscopic and realistic sound to the driver or the passenger on the vehicle.

Specifically, as shown in FIG. 6, the plurality of speakers 100 may be dispersed in the front, rear, left, and right directions, and may be dispersed vertically.

Specifically, the speaker 100 may be divided into an upper speaker 110 and a lower speaker 120.

The upper loudspeaker 110 may be disposed at a head lining adjacent to the driving loudspeaker, but the position of the upper loudspeaker 110 is not limited thereto. .

For example, the upper speaker 110 may be provided on the upper side of the A pillar, the B pillar, or the C pillar instead of the head lining. 6 and 7, one upper speaker 110 is shown, but the vehicle 1 may be provided with a plurality of upper speakers 110. FIG.

The lower speaker 120 is a speaker 100 provided on the lower side of the room. The lower speaker 120 includes a first lower speaker 121 provided on the left front side, a second lower speaker 122 provided on the right front side, A third lower speaker 123 provided on the right side and a fourth lower speaker 124 provided on the right side.

At this time, the lower speaker 120 may be provided in the door as shown in FIG. 2, but the position of the lower speaker 120 is not limited thereto. 6, the number of the lower loudspeakers 120 is not limited to four, but the lower loudspeakers 120 may include the auxiliary loudspeakers 121a and 121b, As shown in FIG. The auxiliary speakers 121a and 121b may be disposed at a middle height between the lower speaker 120 and the upper speaker 110 to provide a more realistic stereo sound.

For example, the auxiliary speakers 121a and 121b may be provided on the upper side of the dashboard 40 as shown in FIG. 2, but the positions of the auxiliary speakers 121a and 121b are not limited thereto. For example, the auxiliary speakers 121a and 121b may be provided at positions corresponding to the handle of each door, or may be mounted inside the driver's seat.

Also, the auxiliary speakers 121a and 121b may be implemented as a tweeter speaker 100 capable of expressing treble sound in order to provide a more vivid sound to the driver.

The auxiliary speakers 121a and 121b may receive sound signals through a separate channel from the lower speaker 120. Hereinafter, the auxiliary speakers 121a and 121b include first and second lower speakers 121 and 122, And receives the sound signal through the same channel.

6 shows one embodiment of various loudspeakers provided in the vehicle, and the arrangement of the speaker 100 of the vehicle is not limited thereto. For example, a surround speaker may be disposed at the rear of the vehicle.

On the other hand, the sound controller 300 may form a virtual speaker in the vehicle 1 using a plurality of speakers 100 provided in the vehicle, and may be provided through the virtual speaker.

The virtual speaker means a speaker virtually formed at a specific position inside the vehicle 1 by the sound controller 300 unlike the actual speaker 100. The driver can recognize that the virtual speaker . The virtual speaker may be formed using a head-related transfer function (HRTF) or the like. The method of forming the virtual speaker is obvious to a person skilled in the art, and a detailed description thereof will be omitted.

The sound controller 300 can determine the position of the virtual speaker VS according to the sound source to be output to be provided inside the vehicle 1. [ The position of the virtual speaker can be defined in the front-rear direction (X axis in Fig. 6) of the vehicle 1, in the lateral direction of the vehicle (Y axis in Fig. 6), and in the vertical direction of the vehicle (Z direction). Hereinafter, the position in the longitudinal direction (the x-y plane in FIG. 6A) is referred to as the plane coordinate, and the vertical direction is defined as the height or the layer of the vehicle, that is, the different layers mean different heights.

The sound controller 300 can change the position of the virtual speaker VS dynamically according to the sound source to be output. That is, the position of the virtual speaker VS according to the sound source to be output moves in the front-rear direction X of the vehicle as shown in Figs. 6A and 6B, or in the left-right direction Y). In addition, the virtual speaker VS can be changed in its layer as shown in FIGS. 6B and 6C according to the sound source to be output.

As described above, the vehicle 1 according to the embodiment is provided with the upper speaker 110, so that the acoustic controller 300 can generate a plurality of virtual You can divide the internal space into layers.

For example, the interior space of the vehicle can be divided into three virtual layers (VL1, VL2, VL3) as shown in Figs. At this time, the first virtual layer VL1 is set to correspond to the height of the driver's face, and the second virtual layer VL2 and the third virtual layer VL3 are sequentially set below the first virtual layer VL1 have.

7 and 8, the internal space of the vehicle 1 may be divided into a larger number of virtual layers or may be divided into a smaller number of virtual layers, (VL1, VL2, VL3).

The sound controller 300 may provide different output target sound sources for each virtual layer VL. By providing different output target sound sources for each virtual layer VL as described above, it is possible to increase the awareness of the driver's output target sound source. Hereinafter, the provision of a plurality of output target sound sources will be described in detail.

FIG. 9 is a flowchart schematically illustrating a sound providing method of a vehicle according to an embodiment, and FIG. 10 is a view for explaining a layer change of a virtual speaker.

Referring to FIG. 9, the vehicle 1 provides a first output target sound source through a first virtual speaker VS (601). At this time, the formation position of the first virtual speaker VS can be determined according to the characteristics of the first output target sound source.

For example, when the first output target sound source is a media sound source, a first virtual speaker VS1 is provided in the second virtual layer VL as shown in FIG. 10A so that a rich sound is provided inside the vehicle 1 Can be set. On the other hand, if the first output target sound source is a voice source, the first virtual speaker VS1 may be formed in the first virtual layer VL1 corresponding to the face of the driver, thereby providing a realistic voice source.

The vehicle 1 monitors the input of the second output destination sound source (603). The sound controller 300 determines the input of the second output target sound source different from the first output target sound source. That is, the sound controller 300 determines whether a plurality of output target sound sources are input at the same time.

When the second output target sound source is input (YES in step 603), the vehicle 1 generates the first virtual speaker VS1 and the second virtual speaker 62 based on the recognition priorities of the first output target sound source and the second output target sound source VS2 are set (605).

The priority of the recognition can be determined based on the driver's cognitive importance. That is, a higher priority is given to an output target sound source requiring immediate recognition by the driver, and a lower priority is given to an output target sound source where the driver does not need immediate recognition.

At this time, the recognition priority can be set in advance. For example, the priority of recognition may be set in the order of a warning sound source, a voice source, a guide sound source, and a media sound source in accordance with the importance degree, but the recognition priority is not limited thereto.

Also, the perceived priority can change dynamically. For example, if the warning sound source is very low in risk, it may be set to a lower rank than the media sound source.

The sound controller 300 compares the recognition priority of the first output target sound source with the recognition priority of the second output target sound source and outputs the first virtual speaker VS1 and the second virtual speaker VS1 in accordance with the comparison result Can be set.

Specifically, the sound controller 300 can determine the position of the first virtual speaker VS1 and the position of the second virtual speaker VS2 according to the recognition priority. A virtual speaker VS providing an output target sound source having a high priority among the first output target sound source and the second output target sound source is set in the first virtual layer VL1 and corresponds to an output target sound source having a low recognition priority The virtual speaker VL is set to the second virtual layer VL2 or the third virtual layer VL3.

For example, when a warning sound source having a higher recognition priority than a media sound source is input while a media sound source is being outputted through the first virtual speaker VS1 as shown in FIG. 10A, 2 virtual speaker VS2 is set in the first virtual layer VL1 and the first virtual speaker VS1 provided with the media sound source is reset to the third virtual layer VL3.

That is, a warning sound source with a high recognition priority is output from the first virtual layer VL corresponding to the head height of the driver. Thus, by determining the position of the virtual speaker in accordance with the priority of recognition, it is possible to increase the awareness of the driver's output destination sound source.

Also, the sound controller 300 may determine the plane position of the first virtual speaker and the frequency characteristic of the second virtual speaker according to the recognition priority. In human audible frequency range, the recognition of high-frequency sound is higher than that of low-frequency sound. In other words, a person is more aware of treble than bass.

 Therefore, the sound controller 300 can set the frequency characteristics of the virtual speaker so that the higher-priority output target sound source is provided at a treble, and the frequency characteristics of the virtual speaker can be set so that the lower- .

For example, in the case of FIG. 10B, the first virtual speaker VS1 may be set to a high frequency to provide treble, and the second virtual speaker VS2 may be set to a low low frequency to provide low tone. Thus, by changing the providing frequency of the sound source to be output according to the priority of recognition, it is possible to increase the awareness of the sound source of the output destination with a high recognition priority.

The vehicle 1 provides a first output target sound source 607 via the reset first virtual speaker VS1 and provides a second output target sound source through the second virtual speaker VS2 (609). That is, the vehicle 1 may provide the first output target sound source and the second output target sound source at different heights.

As described above, the position of the virtual speaker is determined according to the recognition priority, and the output frequency of the sound source to be output is adjusted, thereby increasing the recognition of the sound source of the driver.

Hereinafter, the operation of the sound controller 300 will be described in detail with reference to the drawings.

11 is a diagram illustrating a sound controller according to an embodiment.

Referring to FIG. 11, the sound controller 300 includes a sound source handler 310 for setting a virtual speaker according to a sound source to be output, a parameter calculator 320 for determining a control parameter corresponding to the set virtual speaker, And a signal processor 330 for applying a control parameter to generate an acoustic signal to be applied to each channel. Here, the channel means a communication channel for transmitting an acoustic signal to a speaker.

The sound source handler 310 sets a virtual speaker to which the sound source to be output is to be provided according to the type of the sound source to be output. Specifically, the sound source handler 310 may set at least one of a position where the virtual speaker is to be formed, or a frequency characteristic of the virtual speaker.

When one output target sound source is input, the sound source handler 310 can set a virtual speaker so that one sound source to be output is best transmitted to the driver. On the other hand, when a plurality of output target sound sources are simultaneously input, the sound source handler 310 can set a plurality of virtual speakers so that a plurality of output target sound sources are efficiently provided. Hereinafter, the setting of the virtual speaker will be described in detail.

FIG. 12 is a flowchart showing a method of setting a virtual speaker according to an embodiment, FIG. 13 is a view for explaining the setting of a plane position of a virtual speaker, and FIG. 14 is a diagram showing an example of a frequency characteristic setting of a virtual speaker .

Referring to FIG. 12, the vehicle 1 sets a virtual layer of the first virtual speaker and the second virtual speaker based on the recognition priority (701).

The sound source handler 310 sets the position of the virtual speaker to the first virtual layer VL such that the output target sound source having a high recognition priority is provided at a height corresponding to the head of the driver, The position of the virtual speaker can be set to the second virtual layer VL2 or the third virtual layer VL3 so as to be provided at a distance from the head of the driver.

Then, the vehicle 1 sets the plane position of the first virtual speaker VS and the second virtual speaker VS based on the recognition priority (703).

The sound source handler 310 sets the plane position of the virtual speaker so that the output target sound source having a high recognition priority is provided at a position adjacent to the driver. For example, the sound source handler 310 can determine the position P1 of the virtual speaker to a position adjacent to the driver's seat as shown in FIG. 13A.

The sound source handler 310 sets the plane position of the virtual speaker so that the output target sound source having a low recognition priority is provided at a position away from the driver. For example, the sound source handler 310 can determine the position P2 of the virtual speaker at a position separated from the driver's seat as shown in FIG. 13A.

Meanwhile, the sound source handler 310 may set the plane position according to the characteristics of the sound source to be output. For example, if the sound source to be output is a guidance sound source for guiding the right rotation of the vehicle 1 as shown in FIG. 4A, the sound source handler 310 moves to the position P4 corresponding to the front right side of the driver's seat, Coordinates can be set.

As another example, when the sound source handler 310 is a warning sound source for notifying that the vehicle 1 exists in the left rear side as shown in FIG. 5B, the sound source handler 310 is moved to a position P6 corresponding to the left rear side of the driver's seat You can set the plane coordinates of the virtual speaker.

The vehicle 1 sets the frequency characteristics of the first virtual speaker and the second virtual speaker based on the recognition priority (705). As described above, the recognition of high frequencies is higher than that of low frequencies. Therefore, the sound source handler 310 can determine the frequency characteristics of the sound source to be output based on the recognition priority.

Specifically, the sound source handler 310 can set the virtual speaker such that the output target sound source having a low recognition priority has the frequency characteristic f1 as shown in FIG. 14A. That is, when the recognition priority of the sound source to be output is low, the sound source handler 310 sets the frequency characteristics of the virtual speaker with a strong bass output and a weak treble output.

On the contrary, the sound source handler 310 can set the virtual speaker so that the output target sound source having a high recognition priority has the frequency characteristic f2 as shown in FIG. 14B. That is, when the recognition priority of the sound source to be output is high, the sound source handler 310 sets the frequency characteristic of the virtual speaker with a weak bass output and a strong treble output.

By thus setting the frequency characteristics of the different virtual loudspeakers at an intersection, the recognition degree of a plurality of output target sound sources can be improved.

The parameter calculator 320 determines a parameter to be applied to the sound source to be output based on the virtual speaker set by the sound source handler 310. Specifically, the parameter calculator 320 may include a channel to which the sound signal is input, a time shifting variable for adjusting the input of the sound signal of each channel, a gain variable for adjusting the size of the sound source to be output, The frequency variable can be determined.

Specifically, the parameter calculator 320 can determine the channel on which the acoustic signal is output based on the setting position of the virtual speaker. That is, the parameter calculator 320 can determine which speaker 100 the acoustic signal is to be supplied according to the setting position of the virtual speaker.

FIG. 15 is a diagram for explaining an output channel selection when the virtual speaker is located in the first virtual layer.

As shown in FIG. 15A, when the position of the virtual speaker is set to the first position P1 adjacent to the driver's seat, the first lower speaker 121, the first auxiliary speaker 121a, And the upper speaker 110 may be applied with acoustic signals. That is, the parameter calculator 320 calculates the first channel ch1 corresponding to the first lower speaker 121 and the first auxiliary speaker 121a, and the fifth channel ch5 corresponding to the upper speaker 110, It is possible to determine the channel to which the signal is to be output.

The second lower speaker 122 and the second auxiliary speaker 121b which are adjacent to the second position P2 when the position of the virtual speaker is set to the second position P2 adjacent to the front passenger's seat, And the upper loudspeakers 110, respectively. That is, the parameter calculator 320 calculates the second channel ch2 corresponding to the second lower speaker 122, the second auxiliary speaker 121b, and the fifth channel ch1 corresponding to the upper speaker 110, It is possible to determine the channel to which the signal is to be output.

The second lower speaker 122, the second auxiliary speaker 121b, and the third auxiliary speaker 121b adjacent to the third position P3, when the virtual speaker is located at the third position P3 adjacent to the center console, Only the fourth lower speaker 124 and the upper speaker 110 can be applied with acoustic signals. That is, the parameter calculator 320 calculates the second channel (ch2) corresponding to the second lower speaker 122 and the second auxiliary speakers 121a and 121b and the fourth channel (ch2) corresponding to the fourth lower speaker 124 ch4) corresponding to the upper speaker 110 and the fifth channel (ch5) corresponding to the upper speaker 110 as the channel through which the sound signal is output.

The first lower speaker 121 and the first auxiliary speaker 121a adjacent to the fourth position P4 when the virtual speaker is located at the fourth position P4 adjacent to the rear of the driver's seat, The third lower speaker 123, and the upper speaker 110, respectively. That is, the parameter calculator 320 calculates the second channel (ch2) corresponding to the second lower speaker 122 and the second auxiliary speakers 121a and 121b and the fourth channel (ch2) corresponding to the fourth lower speaker 124 ch4) corresponding to the upper speaker 110 and the fifth channel (ch5) corresponding to the upper speaker 110 as the channel through which the sound signal is output.

If the virtual speaker is located at the second virtual layer VL2 or the third virtual layer VL2, no sound signal may be input to the upper speaker 110. [ In other words. When a virtual speaker is set in the second virtual layer VL2 and the third virtual layer VL3, a sound signal can be applied only to the first channel ch1 to the fourth channel ch4.

In addition, the parameter calculator 320 can determine a time adjustment variable and a gain variable to be applied to the sound source to be output. In order to form the virtual speaker VS at the set position, it is necessary to adjust the output timing of the acoustic signal output to each speaker 100. [ The parameter calculator 320 may determine a time adjustment parameter for adjusting the sound signal output timing for each channel according to the distance between each speaker 100 and the virtual speaker VS.

In order to form the virtual speaker at the set position, it is necessary to adjust the size of the sound source to be output from each speaker 100. The parameter calculator 320 may determine a gain variable for adjusting the output size according to the distance between each speaker 100 and the virtual speaker.

Further, the parameter calculator 320 can determine a frequency variable to be applied to the sound source to be output. In order to form a virtual speaker, it is necessary to apply the distance difference between the speaker 100 and the virtual speaker in terms of frequency, so that the parameter calculator 320 calculates the distance between each speaker 100 and the virtual speaker VS Can determine the frequency variable,

16 is a diagram showing an embodiment of a parameter look-up table.

The parameter calculator 320 may determine the parameters individually according to the position of the virtual speaker 100. However, depending on the position of the virtual speaker, as shown in FIG. 16, the gain variable k and the frequency variable? It is possible to quickly calculate the parameters to be applied to the output destination sound source by using the preset lookup table.

As described above, since the positions of the first virtual speaker provided with the first output target sound source and the second virtual speaker provided with the second output target sound source are different from each other, the parameter calculator 320 calculates the parameter And a variable corresponding to the second virtual speaker can be calculated.

The signal processor 330 may apply the parameters calculated by the parameter calculator 320 to the sound source to be output, and generate sound signals to be input to the plurality of channels. The acoustic signal supplied to each channel can be defined by the following equation (1).

[Equation 1]

In Equation (1), S represents a sound signal, n represents a channel of the speaker 100, t represents an output time of a sound signal, A represents a size of an output target sound source to be provided through a virtual speaker, K represents the gain variable for adjusting the gain of the acoustic signal according to the distance between the virtual speaker and each speaker, and k represents a gain parameter for adjusting the gain of the acoustic signal according to the distance between the virtual speaker and each speaker. And? Represents a frequency variable for adjusting the frequency of the acoustic signal according to the distance between the virtual speaker and each speaker.

As shown in Equation (1), the signal processor 330 generates a sound signal S by applying a gain variable k and a frequency variable? To each channel n. The output timing of the sound signal S generated for each channel is determined by the time adjustment variable.

When there are a plurality of output target sound sources, the signal processor 330 generates sound signals corresponding to the respective sound sources to be output, and synthesizes the generated sound signals and outputs the synthesized sound signals to the respective channels.

Specifically, the signal processor 330 generates a first sound signal for the first output target sound source and a second sound signal for the first output target sound source, respectively, and generates a first sound signal having the same output timing and a second sound signal having the same output timing, The signals can be synthesized and output to each channel.

As described above, the frequency characteristics of the first virtual speaker and the second virtual speaker can be set differently according to the recognition priority. The signal processing unit may filter and output the generated sound signal to provide the sound source to be output according to the set frequency characteristics.

For example, a high-frequency signal is emphasized by applying a filter of the type shown in FIG. 14B to a signal corresponding to an output target sound source having a high recognition priority, and a signal corresponding to an output target sound source having a low recognition priority A low-frequency sound can be emphasized.

On the other hand, when the sound source to be output is configured by a repeated beep sound such as a warning sound source for notifying the risk of collision during parking, the parameter calculating unit 320 calculates a parameter The cycle can be set.

The signal processor may generate an acoustic signal for each channel using the repetition period set in accordance with Equation (2) below.

&Quot; (2) "

In Equation (2), S represents a sound signal, n represents a channel of the speaker 100, t represents an output time of a sound signal, A represents a size of an output target sound source to be provided through a virtual speaker, K represents the gain variable for adjusting the gain of the acoustic signal according to the distance between the virtual speaker and each speaker, and k represents a gain parameter for adjusting the gain of the acoustic signal according to the distance between the virtual speaker and each speaker. Represents the frequency variable for adjusting the frequency of the acoustic signal according to the distance between the virtual speaker and each speaker, and T represents the beep sound repetition period.

FIG. 17 is a view showing a sound controller according to another embodiment, and FIG. 18 is a diagram for explaining switching of a sound source to be output by a sound source converter. Hereinafter, for the sake of convenience, the same reference numerals as those of the sound controller 300 according to the embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

The sound controller 300 according to another embodiment further includes a sound source converter 320. The sound source converter 320 changes the input sound source to be inputted to beep sound, thereby preventing collision between sound sources to be output.

Specifically, when a first output target sound source having a high recognition priority is provided, a second output target sound source having a lower priority than that of the first output target sound source is input, and the sound source converter 320 outputs, Can be changed to a beep sound.

For example, when a driver makes a phone call using the hands-free function, the driver's telephone conversation can be interrupted when the guidance sound source is output. The sound source converter 320 can change the guide sound source to beep sound so that the telephone conversation is not disturbed.

That is, as shown in FIG. 18, the telephone voice source is continuously provided through the first virtual speaker, and the guidance sound source is changed to beep sound and output through the second virtual speaker formed on the second layer.

FIG. 19 is a view showing a sound controller according to another embodiment. FIG. 20 is a view for explaining frequency filtering by an equalizer, and FIG. 21 is a diagram showing a positional change of a virtual speaker.

FIG. 22 is a view showing the operation of a speaker when providing a media sound source in which the low-frequency sound region is removed, FIG. 23 is a view showing an audio signal output when providing a media sound source in which the low- FIG. 7 is a view for explaining the position of a virtual speaker when sound is input.

Referring to FIG. The sound controller 500 according to another embodiment may include an event handler 510, a media sound source controller 520, and an event sound source controller 530.

Hereinafter, the output target sound source will be described as a media sound source and an event sound source. The event sound source means an output target sound source that is not continuously provided unlike a media sound source, and the event sound source may be one of a warning sound source, a voice source, and a guide sound source.

The media source controller 520 controls the output of the audio signals corresponding to the media sources. The media source controller 520 may include a signal processor 521 and an equalizer 523.

The equalizer 523 is used for correcting and improving the sound quality of the media sound source, and can change the frequency characteristics of the input media sound source. Specifically, the equalizer 523 emphasizes the characteristic frequency band of the media source, or conversely reduces the specific frequency band of the media source.

For example, the equalizer 523 may function as an all-pass filter f3 for passing all the input media sound sources as shown in FIG. 20A, or may be a low pass filter for passing only a low frequency band among the media sound sources as shown in FIGS. 20B and 20C It is possible to perform the function as the filters f4 and f5 or to perform the function as the filter f6 that blocks all the frequency bands as shown in Fig. 20D.

The signal processor 521 processes the media sound source whose frequency characteristics have been changed by the equalizer 523 to generate a sound signal. The signal processor 521 may generate a sound signal for each channel so that the media sound source is provided through the virtual speaker. E.g. The signal processor 521 can generate an acoustic signal to be input to each channel using Equation (1).

Referring again to FIG. 19, the event handler 510 monitors the input of the event source. When an event sound source is input through the data bus 270, the event handler 510 sets up a virtual speaker for providing an event sound source.

The virtual speaker VS for providing the event sound source is set to the first virtual layer VL corresponding to the head height of the driver as described above to clearly transmit the event sound source to the driver.

In addition, the plane coordinates of the event sound source may be set according to the characteristics of the event sound source so that the driver can clearly recognize the event sound source. For example, the event sound source for guiding the right turn of the vehicle 1 includes an event sound source for setting the plane coordinates to the front right side of the driver's seat, informing that the vehicle 1 is located on the left rear side of the vehicle 1, The plane coordinates are set.

In addition, the event handler 510 can change the position of the virtual speaker providing the media sound source when the event sound source is input. Specifically, the virtual speaker VL2 or the third virtual layer VL3 may change the position of the virtual speaker providing the media sound source so that the event sound source and the media sound source are provided separately in space.

For example, as shown in FIG. 27A, the event handler 510 may set a first virtual speaker VS01 for providing an event sound source to the first virtual layer VL1, 2 virtual speaker VS02 to the third virtual layer VL.

In addition, the event handler 510 may move the plane coordinates of the second virtual speaker VS02 to provide a media sound source, as shown in FIG. 27B.

Meanwhile, the event handler 510 may transmit a control command to the equalizer 523 so that the frequency characteristics of the media sound source are changed when the event sound source is input.

When the control command is transmitted, the equalizer 523 can change the frequency characteristics of the media source according to the control command. Specifically, the equalizer 523 can pass only a low frequency band from the media source using the low-pass filter f4 as shown in Fig. 20B.

Thus, when the frequency of the high frequency range is filtered by the equalizer 523, only the low frequency range component of the media sound source is input to the signal processor 521, so only the low frequency range signal is applied to the speaker.

As described above, the auxiliary speakers 121a and 121b disposed on the dashboard 40 output a treble, so that the auxiliary speakers 121a and 121b substantially do not output sound. Therefore, Similarly, only the lower speaker 120 outputs the medium.

That is, when the high-frequency area is removed by the equalizer 523, the effect that the media sound source is provided only to the lower speaker 120 as shown in FIG. 23 appears, and the virtual layer of the virtual speaker of the media sound source is lowered.

The event sound source controller 530 provides an event sound source input through the virtual speaker VS set by the event handler 510. Specifically, the event sound source controller 530 determines a channel to which an acoustic signal corresponding to the event sound source is to be output by using the parameter calculator 320 described above, and calculates a time shifting variable, a gain ) Variable and frequency variable can be calculated.

The event sound source controller 530 can generate and output a sound signal by applying a parameter obtained through the parameter calculator 320 to an event sound source. Specifically, the acoustic signal may be generated by Equation (1), but the method of generating the acoustic signal is not limited thereto.

The event handler 510 may set the frequency characteristics of the virtual speaker so that the frequency characteristics of the input event source are changed. That is, the event handler 510 can set the frequency setting of the virtual speaker so that the treble of the input event source is emphasized.

On the other hand, when the input event source is a beep sound, the sound controller 500 may determine the repetition period of the beep sound in consideration of the recognition priority of the event sound source, and may generate the sound signal according to Equation (2) .

The sound controller 500 may further include a synthesizer. The combining unit is provided between the media sound source controller 520 and the lower speaker 120 and can synthesize and output the sound signal output from the media source controller 520 and the sound signal output from the event sound source controller 530 .

In the above description, it is described that one event sound source is input. However, a plurality of event sound sources may be simultaneously input, such as when a guide sound source or a warning sound source is input while a call sound source is being input.

When a plurality of event sound sources are generated as described above, the event handler 510 can determine the position of a virtual speaker to provide an event sound source based on the recognition priorities among a plurality of event sound sources, such as the sound source handler 310 described above have.

Specifically, a location of a virtual speaker for providing an event sound source having a high priority among a plurality of event sound sources may be set as a first virtual layer, and an event sound source having a low priority of recognition may be determined as a second virtual layer.

For example, when a voice source and a route guidance sound source of the navigation device 220 are input at the same time, as shown in FIG. 24, a virtual speaker VS01 for providing a voice source with the highest recognition priority is a first virtual A virtual speaker VS02 for providing a guide sound source set in a position corresponding to the driver's seat in the layer VL1 and having a low recognition priority is located in the second virtual layer VL2 and a virtual speaker VS03 are located in the third virtual layer VL3.

In addition, when a plurality of event sound sources are input, the equalizer 523 may pass only a lower frequency in the media sound source as shown in FIG. 20C, thereby improving the awareness of the event sound source.

On the other hand, when three or more event sound sources are input, the equalizer 523 may block all frequency bands of the media sound sources as shown in FIG. 20D.

25 and 26 are diagrams for explaining dynamic allocation of a virtual layer.

7 and 8, the internal space of the vehicle 1 is described as being divided into three layers. However, the virtual layer VL may be dynamically allocated. This will be described below with reference to FIGS. 25 and 26. FIG.

25 and 26, the number of virtual layers VL set in the internal space of the vehicle 1 may change dynamically. Specifically, when one output target sound source is present, one virtual layer (VL) is set as shown in FIG. 25, and two virtual layers VL1 and VL2 Can be set. At this time. The first virtual layer (VL1) and the second virtual layer (VL2) are spaced apart from each other by a predetermined distance (d) to increase the awareness between the output sound sources.

FIG. 27 is a view showing another embodiment of a method for providing sound of a vehicle, and FIGS. 28 and 29 are views for explaining a change in position of a virtual speaker according to the sound providing method of FIG.

Referring to FIG. 27, the vehicle 1 provides a plurality of output target sound sources through a plurality of virtual speakers (801). A plurality of output target sound sources are output by different virtual speakers. At this time, different virtual speakers may be formed on different layers as described above, and may have different frequency characteristics.

For example, as shown in Fig. 28, a media sound source is provided through a first virtual speaker VS1 provided at the front center of the first virtual layer VL1 of the vehicle 1, A rear collision warning sound source for recognizing the right rear collision risk through the virtual speaker VS1 provided on the right rear side can be provided.

Referring again to FIG. 27, the vehicle 1 determines whether to change the recognition priority of a plurality of output target sound sources (802). The recognition priority of the sound source to be output may dynamically change according to the change of the driving environment of the vehicle 1, so that the sound controller 300 can monitor the change of the recognition priority of the plurality of sound sources to be output.

For example, the risk of rearward movement due to the backward movement of the vehicle 1 depends on the distance between the vehicle 1 and the rear obstacle. That is, when the distance between the vehicle 1 and the rear obstacle is long, the risk of rear collision is low, so that the recognition priority of the rear collision warning sound source is comparatively low. However, if the distance between the vehicle 1 and the rear obstacle becomes close, The higher the risk, the higher the recognition priority of the rear impact warning sound source.

As another example, the recognition priority of the guidance voice for guiding the traveling route of the vehicle 1 may also be changed according to the change of the traveling environment of the vehicle 1. [ Specifically, when the distance between the point at which the traveling route of the vehicle 1 is required and the distance between the vehicle 1 and the vehicle 1 is relatively low, the recognition priority of the guide sound source is relatively low. However, The recognition priority level of the guide sound source is increased.

If the recognition priorities of a plurality of output target sound sources change (YES in 802), the vehicle 1 resets 803 virtual layers of virtual speakers based on the change in recognition priority. As described in detail above, the sound controller 300 includes a virtual speaker corresponding to an output target sound source corresponding to a driver's head height, a virtual speaker corresponding to an output target sound source having a higher recognition priority, You can change the virtual layer of virtual speakers to be spaced from your head. That is, the sound controller 300 can reset the height at which the virtual speaker is formed according to the change in the recognition priority of the sound source to be output.

29, for example, when the recognition priority of the rear collision warning sound source is high, the sound controller 300 transmits the virtual layer of the second virtual speaker VS1, which provides the rear collision warning sound source, to the first virtual layer VL ), And can re-set the layer of the first virtual speaker VS1 to the third virtual layer VL3, which provides the media sound source with a relatively lower recognition priority.

Referring again to FIG. 27, the vehicle 1 resets the plane position of the virtual speakers VS1 based on the recognition priority (804). The sound controller 300 may position the virtual speaker on the plane adjacent to the driver as the virtual speaker providing the output target sound source having a higher recognition priority and position the sound source on the separated plane of the driver as the sound source having the lower recognition priority. At this time, the specific plane position of the virtual speaker may be determined according to the characteristics of the sound source to be output as described above.

29, for example, the sound controller 300 resets the plane position of the second virtual speaker VS2, which provides a rear collision warning sound source, to a position close to the driver when the recognition priority of the rear collision warning sound source becomes high And to reset the plane position of the first virtual speaker VS1, which provides the relatively low-priority media source to a driver-away position. At this time, the plane position of the second virtual speaker VS2 may be set to a direction corresponding to a direction in which a collision risk exists so that the user can intuitively perceive the collision dangerous position.

The vehicle 1 provides a plurality of output target sound sources through a plurality of virtual speakers VS1 whose positions are reset (805). As described above, by changing the position of the virtual speaker dynamically according to the recognition priority of a plurality of output target sounds, it is possible to increase the recognition degree of the sound source by the user. Particularly, by changing the position of the virtual speaker dynamically according to the change in recognition priority of the guide sound source and the warning sound source, the guide sound source and the warning sound source can be efficiently recognized. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Lt; / RTI >

1: vehicle 100: speaker
210: media device 220: navigation device
230: communication device 240: proximity sensor
250: main processor 260: storage device
300: sound controller 310: sound source handler
320: parameter estimator 330: signal processor
340: Sound source converter 500: With acoustic control
510: Event Handler 530: Media Source Controller
240: Event source controller

Claims (24)

A plurality of speakers provided at different heights; And
And a sound controller for controlling an output of the plurality of speakers to provide a first sound source through a first virtual speaker and a second sound source through a second virtual speaker formed at a different position from the first virtual speaker and,
Wherein the sound controller is configured such that the position of the first virtual speaker and the position of the second virtual speaker are set in accordance with the recognition priority of the first sound source and the second sound source, The method according to claim 1,
Wherein the perceived priority is set according to the perceived importance of the driver.
The method according to claim 1,
Wherein the sound controller sets a layer in which the first virtual speaker and the second virtual speaker are formed according to a recognition priority order of the first sound source and the second sound source.
The method of claim 3,
Wherein the sound controller sets a virtual speaker corresponding to a sound source having a higher priority among the first sound source and the second sound source to a layer corresponding to a face height of the driver.
The method of claim 3,
Wherein the sound controller sets the second virtual speaker to a layer higher than the first virtual speaker if the recognition priority of the second sound source is higher than the recognition priority of the first sound source.
The method according to claim 1,
Wherein the sound controller sets the plane coordinates at which the first virtual speaker and the second virtual speaker are to be formed according to the recognition priorities of the first sound source and the second sound source.
The method according to claim 6,
Wherein the sound controller sets the plane coordinates of a virtual speaker corresponding to a sound source having a higher priority among the first sound source and the second sound source to be closer to the driver.
The method according to claim 1,
Wherein the sound source controller determines a frequency characteristic of the first sound source and the second sound source according to a recognition priority order of the first sound source and a recognition priority order of the second sound source.
9. The method of claim 8,
Wherein the sound source controller sets a frequency of the second sound source having a higher recognition priority than the first sound source to be higher than a frequency of the first sound source.
The method according to claim 1,
The speaker includes: an upper speaker disposed on a ceiling of the vehicle; And
And a lower speaker disposed at a lower position than the upper speaker.
The method according to claim 1,
Wherein the sound source controller resets the positions of the first virtual speaker and the second virtual speaker in accordance with the changed recognition priority when the recognition priorities of the first sound source and the second sound source are changed.
The method according to claim 1,
Wherein the first sound source and the first sound source are one of a media sound source for providing media, a talking sound source for providing a call, a guidance sound source for providing information, and a warning sound source for notifying a dangerous situation, And the second sound source are different sound sources.
A plurality of speakers provided at different heights; And
And a sound controller for controlling the plurality of speakers to form a first virtual speaker and providing a first sound source through the first virtual speaker,
Wherein the sound controller provides the second sound source by forming a second virtual speaker at a position different from the first virtual speaker when the second sound source is input,
Wherein the sound controller determines a layer on which the second virtual speaker is to be formed by comparing the recognition priority of the first sound source with the recognition priority of the second sound source.
14. The method of claim 13,
Wherein the sound controller sets the layer of the second virtual speaker to a layer corresponding to the height of the face of the driver, wherein the recognition priority of the second sound source is higher than the recognition priority of the first sound source.
15. The method of claim 14,
Wherein the sound controller sets the layer of the first virtual speaker to be lower than the layer of the second virtual speaker.
14. The method of claim 13,
Wherein the sound controller compares the recognition priority of the first sound source with the recognition priority of the second sound source to determine the plane coordinates of the second virtual speaker and the second virtual speaker.
17. The method of claim 16,
Wherein the sound controller is further configured to determine that the recognition rate of the second virtual speaker is higher than the recognition priority of the first virtual speaker and that the second virtual speaker is located at a position closer to the driver than the first virtual speaker Vehicle that sets the plane coordinates.
17. The method of claim 16,
Wherein the sound source controller determines a frequency characteristic of the first sound source and the second sound source according to a recognition priority order of the first sound source and the second sound source.
A method of controlling a vehicle including a plurality of speakers provided at different heights.
A first providing step of providing a media sound source through a first virtual speaker formed using the plurality of speakers; And
And a second providing step of providing the media sound source through the first virtual speaker when the event sound source is input and providing the event sound source through a second virtual speaker formed at a position different from the first virtual speaker ,
Wherein the second providing step comprises:
Resetting the second virtual speaker to a position adjacent to the driver as the perceived importance of the event sound increases; And
And resetting the first virtual speaker to a position away from the driver as the perceived importance of the event sound increases.
20. The method of claim 19,
Wherein the event sound source is at least one of a call sound source for providing a call, a guide sound source for providing information, and a warning sound source for notifying a dangerous situation.
20. The method of claim 19,
Wherein the second providing step is configured such that the second virtual speaker is set to a layer corresponding to the face of the driver and the first virtual speaker is set to a lower layer than the second virtual speaker .
20. The method of claim 19,
Wherein the second providing step comprises setting a plane position of the first virtual speaker and the second virtual speaker such that the second virtual speaker is formed at a position adjacent to the driver than the first virtual speaker Control method.
The method according to claim 1,
Wherein the second providing step outputs the event sound source at a high tone and outputs the media sound source at a low tone.
The method according to claim 1,
And the second providing step includes adjusting an output period of the event sound source.

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