KR101487474B1 - Simulation sound generation apparatus of vehicle and simulation sound generation method of vehicle using the same - Google Patents

Abstract

The present invention relates to a simulation sound generation apparatus for a car, and a simulation sound generation method for a car using the same. According to the present invention, a simulation sound is generated in response to a car behavior using a GPS signal such that a pedestrian or a driver can be informed of the dangers against safe driving, thus preventing an accident and driving can be comfortable and satisfying. The present invention includes: a GPS reception module which receives a GPS signal; and a sound control unit which applies a sound output signal to a speaker such that a sound signal associated with a car behavior can be outputted through the speaker using the data received by the GPS reception module.

Description

Technical Field [0001] The present invention relates to a virtual sound generating apparatus for a vehicle and a virtual sound generating method for a vehicle using the same.

The present invention relates to a virtual sound generating apparatus for a vehicle and a virtual sound generating method for an automobile using the same. More particularly, the present invention relates to a method for generating a virtual sound according to the behavior of a vehicle using GPS signals, The present invention relates to a virtual sound generating device for a vehicle and a virtual sound generating method for a vehicle using the same.

It is difficult for pedestrians to recognize the sounds of hybrid cars and general vehicles that run on electric power as electric-powered vehicles increase rapidly. It is shown that the approach of the vehicle can be perceived as approaching about 40% compared with the conventional engine powered vehicle irrespective of the lateral direction when approaching the vehicle in the electric power state. That is, when the distance between the electric powered vehicle and the pedestrian is 2 m (7 ft) and the collision is about 1 second before the pedestrian recognizes the vehicle, it poses a serious risk to pedestrian safety.

On the other hand, the data of the GPS receiver is widely used for environmentally friendly green drive and safe driving by utilizing the position and speed of the vehicle through MAP matching. Remote data transmission is also possible using wireless connection.

Korean Patent Application No. 10-2009-0078953 discloses an engine sound / exhaust sound generating apparatus and method, and a recording medium.

That is, conventionally, there is a device for implementing various virtual engine sound effects of an automobile, which is an application No. 10-2006-0075628, which receives rotation of an engine, that is, RPM signal, from a vehicle using an engine serving as an internal combustion engine, It is a device for listening to the effect sound in the vehicle interior. This is for the driver to hear a virtual engine sound in the room where the window is closed.

Another conventional technique is an apparatus for generating an engine sound / exhaust sound of a bicycle for children, which is Korean Patent Application No. 20-1993-0005730, which detects whether the front wheel is turning and outputs a voice signal such as " do.

Another conventional technique is a Korean audio-visual output apparatus and method for a vehicle, which is Korean Patent Application No. 10-2004-0031875, which detects whether the window of the vehicle is opened or closed by voice information, And outputs the voice of the driver to be transmitted to the outside when the window is closed.

Another conventional technique is a speech generating apparatus for a vehicle, which is Korean Patent Application No. 10-2006-0009589, which generates voice information from a speaker in a vehicle when the driver is traveling by operation of a switch in a golf cart mounted on the vehicle , And if the golf cart is traveling on the outside in accordance with the operation of the remote controller, voice information is largely generated by the outdoor speaker, thereby informing the user of the guide information.

Another conventional technique is the Japanese EXHAUST SOUND REPRODUCING DEVICE in Japanese 11-139214 (1999), which is designed to sound a recorded sound instead of damaging the muffler which is illegal in order to increase the exhaust sound in a car using an engine The present invention aims at listening in the vehicle by detecting the number of revolutions of the engine and causing the stored exhaust sound to be heard by a speaker. Also, as the engine of the internal combustion engine, there is no concept of idle idling by always idling.

However, the conventional techniques described above have a problem that the conventional GPS receiving function can not be applied to a virtual sound generating device of an automobile, so that the devices are installed in duplicate.

In addition, the conventional virtual sound generating apparatus of the automobile has troubles such as the modification of the existing vehicle or the installation of additional complicated parts.

SUMMARY OF THE INVENTION The present invention has been made to solve the various problems caused by the above problems, and it is an object of the present invention to provide a realistic virtual engine sound or traveling noise according to the behavior of an accurate car using a GPS signal, And to provide a virtual sound generating apparatus for a vehicle that can prevent accidents through risk notifications and provide pleasant and satisfactory operation, and a virtual sound generating method using the same. However, these problems are illustrative, and thus the scope of the present invention is not limited thereto.

According to an aspect of the present invention, there is provided an apparatus for generating a virtual sound of an automobile, the apparatus including: a GPS receiving module for receiving a GPS signal; And a sound controller for applying an acoustic output signal to the speaker so that an acoustic signal related to the behavior of the vehicle is output to the speaker using data received from the GPS receiver module.

According to an aspect of the present invention, the GPS receiving module may receive data related to a current position of a car to obtain a real time velocity value of the car.

According to an aspect of the present invention, the GPS receiving module may measure a Doppler effect on a used frequency of a receiving frequency band in order to obtain a real time velocity value of an automobile.

According to an aspect of the present invention, the sound control unit may further include: a memory capable of storing a sound source selected from at least one of a vehicle noise source, a driving safety information source, other GPS related sources, and combinations thereof; A data processing unit for determining a behavior of the vehicle according to the GPS signal received by the GPS receiving module, selecting a sound source stored in the memory corresponding to the behavior of the vehicle, and outputting the selected sound source; An audio codec for modulating, demodulating and outputting an analog audio signal to be reproduced by receiving the digital sound source outputted from the data processing device; And a power amp stage for receiving and amplifying the audio signal from the audio codec.

According to an aspect of the present invention, the acoustic signal includes at least a stop sound output signal, a start ON sound output signal, a start OFF sound output signal, a traveling sound output signal, a backward sound output signal, a shadow area output signal, It can be done by selecting one or more.

According to an aspect of the present invention, the traveling sound output signal may be output in multiple stages such that the intensity of the traveling sound increases stepwise as the speed of the vehicle increases according to the speed of the vehicle determined by the data processing apparatus.

According to an aspect of the present invention, the shaded area output signal may be obtained by adding or subtracting a speed value measured by an automobile speed measuring sensor at a final speed value or a lowest speed value of the vehicle determined by the data processing apparatus, And may be output in multiple stages.

According to an aspect of the present invention, the sound control unit may further include at least one AUX connector for connecting the amplified signal output from the power amplifier stage to the speaker.

In addition, the virtual sound generating apparatus of the automobile according to the present invention may further include a vehicle condition detecting sensor for detecting a condition of the vehicle when the GPS signal is not received in the shaded area.

In addition, the virtual sound generating device of a vehicle according to the present invention may include: a display capable of displaying various visual information; And a controller for controlling the visual information signal such that the visual information can be displayed on the display.

According to another aspect of the present invention, there is provided a virtual sound generating apparatus for a vehicle, the apparatus comprising: a GPS antenna which can be selectively installed by an external antenna connector according to various external inputs or installation positions.

According to another aspect of the present invention, there is provided a method for generating a virtual sound of an automobile using a virtual sound generating device for a vehicle, the method comprising: receiving a GPS signal; receiving data from the GPS receiving module; And a sound control unit for applying an acoustic output signal to the speaker so that an acoustic signal related to the behavior of the vehicle is outputted to the speaker, the method comprising the steps of: using the GPS receiving module Receiving a GPS signal; And determining the behavior of the vehicle with the GPS signal received using the sound control unit and outputting an acoustic signal related to the behavior of the vehicle to the speaker.

According to another aspect of the present invention, there is provided a method for generating a virtual sound of an automobile, including the steps of: sensing a state of a vehicle with a vehicle state detection sensor in a shadow area where GPS signals are lost; And correcting the acoustic signal according to a sensing signal sensed by the vehicle state sensing sensor.

According to some embodiments of the present invention as described above, realistic virtual engine sounds or traveling noises are generated according to the behavior of an accurate automobile without using redundant investment by using existing GPS signals, It is possible to prevent accident from danger notification and to enable pleasant and satisfactory operation. Of course, the scope of the present invention is not limited by these effects.

1 is a block diagram conceptually showing a virtual sound generating device of a car according to some embodiments of the present invention.
2 is a flowchart showing an example of a virtual sound generating method of an automobile using a virtual sound generating apparatus of an automobile according to some embodiments of the present invention.
3 is a flowchart showing another example of a virtual sound generating method of an automobile using a virtual sound generating apparatus of an automobile according to some embodiments of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, The present invention is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thickness and size of each layer are exaggerated for convenience and clarity of explanation.

It is to be understood that throughout the specification, when an element such as a film, region or substrate is referred to as being "on", "connected to", "laminated" or "coupled to" another element, It will be appreciated that elements may be directly "on", "connected", "laminated" or "coupled" to another element, or there may be other elements intervening therebetween. On the other hand, when one element is referred to as being "directly on", "directly connected", or "directly coupled" to another element, it is interpreted that there are no other components intervening therebetween do. Like numbers refer to like elements. As used herein, the term "and / or" includes any and all combinations of one or more of the listed items.

Although the terms first, second, etc. are used herein to describe various elements, components, regions, layers and / or portions, these members, components, regions, layers and / It is obvious that no. These terms are only used to distinguish one member, component, region, layer or section from another region, layer or section. Thus, a first member, component, region, layer or section described below may refer to a second member, component, region, layer or section without departing from the teachings of the present invention.

Also, relative terms such as "top" or "above" and "under" or "below" can be used herein to describe the relationship of certain elements to other elements as illustrated in the Figures. Relative terms are intended to include different orientations of the device in addition to those depicted in the Figures. For example, in the figures the elements are turned over so that the elements depicted as being on the top surface of the other elements are oriented on the bottom surface of the other elements. Thus, the example "top" may include both "under" and "top" directions depending on the particular orientation of the figure. If the elements are oriented in different directions (rotated 90 degrees with respect to the other direction), the relative descriptions used herein can be interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing ideal embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention should not be construed as limited to the particular shapes of the regions shown herein, but should include, for example, changes in shape resulting from manufacturing.

FIG. 1 is a block diagram conceptually showing a virtual sound generating apparatus 1000 of an automobile according to some embodiments of the present invention.

1, an automobile virtual sound generating apparatus 1000 according to some embodiments of the present invention includes a GPS receiving module 11, a sound control unit 200, a vehicle state detecting sensor 13, a display 32, a controller 33, and a GPS antenna 10.

Here, as shown in FIG. 1, the GPS receiving module 11 may be a module that receives a GPS signal related to the position of the vehicle from a GPS satellite or other base station.

The GPS receiving module 11 receives the data related to the current position of the vehicle to obtain a real time velocity value of the automobile or the Doppler effect on the use frequency of the receiving frequency band to obtain a real time velocity value of the automobile. . ≪ / RTI >

Here, the Doppler effect is an effect that occurs when at least one of a wave source generating a wave and an observer observing the wave is moving, and when the distance between the source and the observer is narrowed, And when the distance is long, the frequency of the wave is observed to be lower.

Therefore, when the speed of the vehicle is determined, it is possible to calculate the accurate speed by using the intensity of the signal for at least three or more satellites received through the GPS receiving module 11 or measuring the frequency of the signal.

1, more specifically, for example, the sound control unit 200 may use the data received from the GPS receiving module 11 to transmit an acoustic signal related to the behavior of the vehicle to the speaker S ), The sound source may be a sound source selected from at least one of a vehicle noise source, a driving safety information source, other GPS related source, and a combination thereof. A memory 31 for storing the GPS signal received from the GPS receiver module 11, a data processing unit for determining the behavior of the car according to the GPS signal received by the GPS receiving module 11, selecting a sound source stored in the memory 31 corresponding to the behavior of the car, An audio CODEC 12 for modulating, demodulating and outputting an analog sound signal to be reproduced by receiving the digital sound source output from the data processing apparatus 100, A power amp stage 14 for receiving and amplifying a sound signal from the audio codec 12 and at least one AUX connector 14 for connecting the amplified signal output from the power amp stage 14 to the speaker S 42) < / RTI >

Here, the acoustic signal is selected by selecting at least one of a stop sound output signal, a start ON sound output signal, a start OFF sound output signal, a traveling sound output signal, a backward sound output signal, a shadow area output signal, .

The driving sound output signal may be output in a multi-stage manner such that the driving sound intensity is increased stepwise as the speed of the automobile increases according to the speed of the automobile determined by the data processing apparatus 100. [

Therefore, by using sound effects such as realistic engine sounds according to the user and social noise regulation requirements, the social noise of the vehicle can be reduced while securing pedestrian safety.

In addition, by using GPS data, it is possible to provide expandability of a traveling noise generator device having an expandability of a vehicle entry notification mobile device for a disabled person through a wireless terminal service such as a smart phone or a mobile phone in the future.

The shaded area output signal may be obtained by adding or subtracting the speed value measured by the vehicle state detection sensor 13 from the final speed value or the lowest speed value of the vehicle judged by the data processing apparatus 100, Lt; / RTI >

When the GPS signal is not received in the shaded area, the vehicle state detection sensor 13 senses the state of the vehicle. The sensor detects various types of acceleration sensors, gravity sensors, rotation speed sensors of the wheels, And so on.

The vehicle state detection sensor 13 is for solving the problem of missing the GPS signal in the shaded area of the commercial GPS reception module. It is a part of the sensor that outputs data according to the movement of the vehicle, In case of searching or losing the signal, it is possible to output the virtual driving noise of the vehicle by using the sensor which outputs the data according to the movement of the vehicle to the initial set value or the final value.

For example, it detects the movement of the vehicle through the output acceleration value using the acceleration / G sensor and adjusts the signal level according to acceleration / deceleration to correct the speed of the vehicle from the missed state to the point where the signal is re- Driving noise can be output by applying speed.

The display 32 may be a device capable of displaying various visual information through various screens such as a cathode ray tube, an LCD panel, an LED panel, an organic light emitting device panel, or a PDP.

The controller 33 is a device capable of controlling the visual information signal so that the visual information can be displayed on the display 32 by using various command input devices such as a keypad, a touch pad, a switch, .

In addition, the GPS antenna can easily receive a GPS signal, and can be selectively installed by an external antenna connector 40 depending on various external inputs or installation positions.

The virtual sound generating apparatus 1000 of an automobile according to some embodiments of the present invention can be installed irrespective of position and is easy to attach and detach anywhere in the vehicle so that time and speed information can be viewed while maintaining the cleanliness inside the vehicle Or installed with commercial navigation to obtain auditory cognitive effects on pedestrians.

That is, the virtual sound generating apparatus 1000 of an automobile according to some embodiments of the present invention may be a navigation system using a GPS, a black box, a navigation recorder, a noise generating device, various image reproducing devices, a smart phone, A portable information terminal such as a pad, and the like.

Accordingly, an operation process of the virtual sound generating apparatus 1000 of an automobile according to some embodiments of the present invention will be described. When a GPS signal is inputted through the GPS receiving module 11, The controller 100 may calculate the speed of the vehicle and output the final noise through the speaker S step by step according to the speed of the vehicle, for example, as shown in the following table.

That is, the sound output intensity of the audio codec is used as an input value as a control signal (sound control signal) according to the speed calculated in the data processor so as to generate a virtual driving noise of the vehicle. The control signal can be classified as shown in the following example table.

At this time, the data processing apparatus 100 selects, for example, various types of MP3 driving noise sources stored in the memory 31 in a digital format as well as various driving safety information sources and other GPS related sources And output it as an analog sound signal through the audio codec 12.

It is possible to control the sound according to the user's taste without using an animal sound or water noise, which does not have a problem in vehicle recognition, can do. The sound thus output can be taken as a signal that the pedestrian is approaching the vehicle and can be prevented from the risk of accident.

At this time, data from the data processing device such as time and vehicle speed can be visually seen through the display 32, which can be configured to enable selective display by the signal of the controller 33.

Also, considering GPS error range, climatic environment and geographical environment, if GPS signal is missed from shadow area, data processing range is as follows.

For example, in the case of a shaded area, the data processing from the vehicle condition detection sensor can range from a GPS reception missed state to a reacquisition state.

In such a shaded area, the sensor value can be divided into stages at the final velocity value or the lowest value, as shown in the following example, and applied to the velocity value.

That is, for example, the vehicle state detection sensor 13 mounted on the vehicle or mounted on the vehicle may be a gravity acceleration sensor for outputting a value of gravity acceleration g or an acceleration sensor for outputting a value corresponding to acceleration / And more specifically, in the case of a gravitational accelerometer that outputs a value of gravitational acceleration (g), it is possible to use a sensor or an external input terminal The sensor value can be input. In this case, the input sensor value may be a value converted to a value to be added or subtracted by determining a range of output values according to m steps, as in the above example.

The signal is input to the data processing apparatus 100 and the sound intensity is determined according to the set value of the determined step. The sound source data output from the data processing apparatus 100 can be read from the internal storage or from an external storage medium mounted in the memory slot.

   For example, the memory 31 can be configured to facilitate use of the terminal by using an SD memory which is easy to insert into the external storage medium. Also, the basic file format of the sound source type of the stored medium is * .mp3. At this time, the data processing device reads the initial authentication data and at the same time inhibits the use of indiscriminate sound. The list structure of the sound source data is as follows. Here, the file name is put in arabic numerals, and 10 sound sources are used.

More specifically, the sound that is used can avoid confusion with special vehicles and natural sounds, and can select sound sources that pedestrians can easily recognize. The driving sound provided as described above can be used by selecting a type of sound source stored in advance through the controller.

Subsequently, the sound source output after the data processing according to the driving situation is transmitted to the speaker installed separately inside and outside the vehicle, and can be transmitted through the AUX connectors 42 and 43.

The maximum size of the transmitted sound can be determined in consideration of the social noise, and the speaker S can be separately configured.

In addition, the speaker S may be provided with a volume controller through a variable resistor for controlling the power amp output so that the volume of the speaker S can be adjusted in advance or during use.

Here, the speaker S may be a part of an automobile, a speaker installed in a navigation box using GPS, a black box, a driving recorder or a noise generating device, or installed in various portable information terminals such as a smart phone, Speaker, or any other type of speaker.

The virtual sound generating apparatus 1000 of an automobile according to some embodiments of the present invention may be installed as a separate type fixing bracket so as to be easily installed inside a bonnet or inside a vehicle.

2 is a flowchart showing an example of a virtual sound generating method of an automobile using the virtual sound generating apparatus 100 of the automobile according to some embodiments of the present invention.

As shown in FIG. 2, a virtual sound generating method of an automobile using a virtual sound generating device 100 of an automobile according to some embodiments of the present invention includes: The GPS reception module 11 or the vehicle condition detection sensor 13 is operated, and then the GPS reception module 11 is activated, A step S1 of searching for and receiving a GPS signal using the module 11 and a step S2 of calculating the speed, time and position of the vehicle using the data processing apparatus 100 (S4) when the GPS signal is lost; detecting the state of the vehicle by the vehicle state detection sensor (13) in the case of the shadow area where the GPS signal is missed; The detection signal detected by the state detection sensor 13 (S5) for correcting the sound signal in accordance with the control signal (S5), and when the driving safety information is required (S6), the driver control unit (200) (S8) for outputting a driving state sound for external output so that a pedestrian can hear the vehicle, or a step S8 for determining the behavior of the vehicle with the received GPS signal and outputting an acoustic signal related to the behavior of the vehicle to the speaker S (S9) of outputting the information to the display (32), and displaying it as visual information through the display (32) by an information selection switching operation (S10).

3 is a flowchart showing another example of a virtual sound generating method of an automobile using a virtual sound generating apparatus 100 of an automobile according to some embodiments of the present invention.

As shown in FIG. 3, a virtual sound generating method of an automobile using a virtual sound generating apparatus 100 of an automobile according to some embodiments of the present invention is a method of processing data mainly for virtual sound generation, When the processor is started, the device can be turned ON / OFF to the ON state or continuously, and then, when the vehicle is started, a startup sound can be output, and the GPS reception module 11, (S1) of searching for and receiving a GPS signal using the GPS receiving module (11); and subsequently, using the data processing device (100) (S4) of re-searching for a GPS signal when the GPS signal is lost; calculating a speed, a time, a position, The sensor 13 detects the state of the vehicle (S5) of detecting the vehicle signal, and correcting the sound signal according to a sensing signal sensed by the vehicle condition detecting sensor (13); and then determining the behavior of the vehicle with the received GPS signal, (S9) of outputting a related acoustic signal to the speaker (S9), and displaying (S10) visual information by the information selection switching operation through the display (32).

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

S: Speaker
10: GPS antenna
11: GPS reception module
12: Audio codec
13: Vehicle condition detection sensor
14: Power amplifier stage
31: Memory
32: Display
33:
40: External antenna connector
42, 43: AUX connector
200:
1000: Virtual sound generator of vehicle
1000: Data processing device

Claims (13)

A GPS receiving module for receiving GPS signals; And
A sound controller for applying an acoustic output signal to the speaker so that an acoustic signal related to the behavior of the vehicle is output to the speaker using data received from the GPS receiver module;
Lt; / RTI >
The sound control unit includes:
A memory capable of storing a sound source selected from at least one of a vehicle noise source, a driving safety information source, other GPS related sources, and combinations thereof;
A data processing unit for determining a behavior of the vehicle according to the GPS signal received by the GPS receiving module, selecting a sound source stored in the memory corresponding to the behavior of the vehicle, and outputting the selected sound source;
An audio codec for modulating, demodulating and outputting an analog audio signal to be reproduced by receiving the digital sound source outputted from the data processing device; And
A power amp stage receiving the acoustic signal from the audio codec and amplifying the acoustic signal;
/ RTI >
Wherein the acoustic signal includes a shaded area output signal,
The shaded area output signal may include:
Wherein a speed value measured by a speed sensor of an automobile is added or subtracted from a final speed or a minimum speed value of the car determined by the data processing apparatus, and outputted in multiple stages according to the applied calculation speed. The method according to claim 1,
The GPS receiving module includes:
And receives data related to the current position of the vehicle to obtain a real time velocity value of the vehicle. The method according to claim 1,
The GPS receiving module includes:
Wherein a Doppler effect on the frequency of use of the receiving frequency band is measured to obtain a real time velocity value of the car. delete The method according to claim 1,
Wherein the sound signal is at least selected from at least one of a stop sound output signal, a start ON sound output signal, a start OFF sound output signal, a traveling sound output signal, a back sound output signal, and a combination thereof A virtual sound generator. 6. The method of claim 5,
Wherein the running sound output signal includes:
Wherein when the speed of the vehicle is increased according to the speed of the vehicle determined by the data processing apparatus, the output of the virtual sound generating apparatus is output in multiple stages so that the intensity of the traveling sound increases step by step. delete The method according to claim 1,
The sound control unit includes:
At least one AUX connector for connecting an amplified signal output from the power amp stage to a speaker;
Wherein the virtual sound generating device further comprises: The method according to claim 1,
A vehicle condition detection sensor for detecting the condition of the vehicle when the GPS signal is not received in the shaded area;
Wherein the virtual sound generating device further comprises: The method according to claim 1,
A display capable of displaying various visual information; And
A controller for controlling the visual information signal such that the visual information can be displayed on the display;
Wherein the virtual sound generating device further comprises: The method according to claim 1,
A GPS antenna which can be selectively installed by an external antenna connector according to various external inputs or installation positions;
Wherein the virtual sound generating device further comprises: A GPS receiving module for receiving a GPS signal, and a sound controller for applying an acoustic output signal to the speaker so that an acoustic signal related to the behavior of the vehicle is output to the speaker using data received from the GPS receiving module. A method for generating virtual sound of an automobile using a sound generator,
Receiving GPS signals using the GPS receiving module; And
Determining the behavior of the vehicle with the GPS signal received using the acoustic control unit, and outputting an acoustic signal related to the behavior of the vehicle to a speaker;
Lt; / RTI >
The sound control unit includes:
A memory capable of storing a sound source selected from at least one of a vehicle noise source, a driving safety information source, other GPS related sources, and combinations thereof;
A data processing unit for determining a behavior of the vehicle according to the GPS signal received by the GPS receiving module, selecting a sound source stored in the memory corresponding to the behavior of the vehicle, and outputting the selected sound source;
An audio codec for modulating, demodulating and outputting an analog audio signal to be reproduced by receiving the digital sound source outputted from the data processing device; And
A power amplifier stage for receiving a sound signal from the audio codec and amplifying the sound signal;
/ RTI >
Wherein the acoustic signal includes a shaded area output signal,
Wherein the shaded area output signal is output in multiple stages in accordance with an applied calculation speed by adding or subtracting a speed value measured by a vehicle speed measuring sensor at a final speed or a lowest speed value of the vehicle judged by the data processing apparatus, / RTI > 13. The method of claim 12,
Detecting a state of the vehicle by a vehicle state detection sensor in the case of a shaded area in which the GPS signal is lost; And
Correcting the acoustic signal according to a sensing signal sensed by the vehicle state sensing sensor;
Further comprising the steps of:

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