Vehicle and control method for the same
A vehicle and a control method of the vehicle are provided. The vehicle includes a first controller that is configured to provide a media sound source via a first virtual speaker. Additionally, the apparatus includes a second controller that is configured to provide the event sound source via a second virtual speaker, which is formed in a layer different from the first virtual speaker, when an event sound source is input.
1. A vehicle, comprising:
a memory comprising processor executable instructions;
a plurality of speakers disposed at different heights within the vehicle;
at least one hardware processor interfaced to the memory and configured to execute the processor executable instructions in the memory to implement a sound controller configured to set a plurality of virtual speakers, each providing a respective sound source, at different positions within the vehicle by controlling the plurality of speakers and to provide a plurality of sound sources by using the plurality of virtual speakers.
2. The vehicle of claim 1 wherein the sound controller is provided in the at least one hardware processor to determine a speaker among the plurality of speakers, to which an audio signal that corresponds to a sound source is applied, based on a position of the virtual speaker.
3. The vehicle of claim 2 wherein the sound controller is provided in the at least one hardware processor to form the plurality of virtual speakers in different layers according to the priority of recognition.
4. The vehicle of claim 3 wherein the sound controller is provided in the at least one hardware processor to set a virtual speaker that corresponds to a sound source having a high priority of recognition among a plurality of sound sources, in a layer that corresponds to a height of a driver's head, and set a virtual speaker that corresponds to a sound source having a low priority of recognition among the plurality of sound sources, in a layer lower than the height of the driver's head.
5. The vehicle of claim 3 wherein the sound controller is provided in the at least one hardware processor to set plane coordinates of the plurality of virtual speakers to form a virtual speaker that corresponds to a sound source having a high priority of recognition among the plurality of sound sources to be closer to a driver than a virtual speaker that corresponds to a sound source having a low priority of recognition among a plurality of sound sources.
6. The vehicle of claim 2 wherein the sound controller is provided in the at least one hardware processor to provide a sound source having a high priority of recognition as a high pitch sound, and a sound source having a low priority of recognition as a low pitch sound.
7. The vehicle of claim 1 wherein the sound controller is provided in the at least one hardware processor to generate an audio signal, to be applied to each of the plurality of speakers, based on a distance between the plurality of speakers and the virtual speaker.
8. The vehicle of claim 7 wherein the sound controller is provided in the at least one hardware processor to adjust a gain of an audio signal, to be applied to each of the plurality of speakers, based on a distance between the plurality of speakers and the virtual speaker.
9. The vehicle of claim 7 wherein the sound controller is provided in the at least one hardware processor to adjust an output timing of the audio signal based on a distance between each speaker and the virtual speaker.
10. The vehicle of claim 7 wherein the sound controller is provided in the at least one hardware processor to adjust a frequency of the audio signal, to be applied to each speaker, based on a distance between each speaker and the virtual speaker.
11. The vehicle of claim 7 wherein the sound controller is provided in the at least one hardware processor to generate the audio signal, to be applied to the plurality of speakers, based on the following equation
S
n
(
t
,
f
)
=
k
n
·
A
(
t
)
·
e
j
·
2
π
(
(
1
+
Θ
n
c
)
·
f
)
·
t
wherein, S represents the audio signal, n represents each channel of the plurality of speakers, t represents an output time of the audio signal, A represents the size of a sound source to be provided via the virtual speaker, f represents a frequency of a sound source to be provided via the virtual speaker, c represents the speed of sound when air is the medium, k represents a variation to adjust a gain of the audio signal based on a distance between the virtual speaker and each speaker, and θ represents a variation to adjust a frequency of the audio signal based on a distance between the virtual speaker and each speaker.
12. A control method of a vehicle including a plurality of speakers disposed at different heights, comprising:
setting, by a controller, a plurality of virtual speakers, to provide each sound source, in different positions based on the priority of recognition of the plurality of sound sources by using the plurality of speakers; and
providing, by the controller, the plurality of sound sources at the same time using the plurality of virtual speakers.
13. The control method of claim 12 wherein:
the setting includes at least one operation selected from the group consisting of: determining a gain, to be applied to each of the plurality of speakers, based on a distance between the plurality of speakers and the virtual speaker, determining an output timing of the audio signal based on a distance between each speaker and the virtual speaker, and adjusting a frequency of an audio signal, to be applied to each speaker, based on a distance between each speaker and the virtual speaker.