Method of controlling volume level of personalized voice guidance based on changes in posture of vehicle occupant and device therefor
Disclosed herein is a method of controlling, by a voice guidance control device according to some embodiments of the present disclosure, a volume level of personalized voice guidance. The method includes: obtaining information on a distance between an occupant of a vehicle and a seat of the vehicle from a signal generated from the vehicle; and outputting voice guidance related to the occupant. A volume level of the voice guidance is adaptively determined based on the information on the distance between the occupant and the seat.
1 . A device configured to control a volume level of personalized voice guidance, the device comprising:
a distance measuring unit configured to obtain information on a distance between an occupant of a vehicle and a seat of the vehicle from a signal generated from the vehicle;
a speaker configured to output voice guidance related to the occupant;
a display device configured to receive, when the distance between the occupant and the seat of the vehicle is a reference distance, an input from the occupant; and
a controller configured to set a reference volume level of the speaker based on the input, and adaptively increase a volume level of the speaker with respect to the reference volume level when the distance between the occupant and the seat increases with respect to the reference distance and adaptively decrease the volume level of the speaker with respect to the reference volume level when the distance between the occupant and the seat decreases with respect to the reference distance.
2 . The device of claim 1 , wherein based on that there are two or more occupants in the vehicle, the controller outputs voice guidance personalized for each of the two or more occupants.
3 . The device of claim 1 , wherein the signal generated from the vehicle includes an ultrasonic signal transmitted from the distance measuring unit mounted on the seat of the vehicle, and
wherein the distance measuring unit determines the distance information based on information on a round-trip time of the ultrasonic signal reflected by the occupant.
4 . The device of claim 1 , wherein a location at which the voice guidance is output corresponds to the speaker mounted on the seat.
5 . The device of claim 1 , wherein the speaker includes at least one directional speaker, and
wherein the directional speaker includes a vibrator and a vibrating plate.
6 . The device of claim 5 , wherein the vibrator related to concentration of the voice guidance includes two or more bone conduction speakers, and
wherein the concentration of the voice guidance is determined based on a spacing between the bone conduction speakers.
7 . The device of claim 5 , wherein the vibrating plate related to sound quality of the voice guidance includes carbon fibers.
8 . The device of claim 1 , wherein the distance measuring unit and the speaker are mounted on the seat.
9 . A method of controlling, by a voice guidance control device, a volume level of personalized voice guidance, the method comprising:
obtaining information on a distance between an occupant of a vehicle and a seat of the vehicle from a signal generated from the vehicle;
outputting, by a speaker, voice guidance related to the occupant;
receiving, by a display device, when the distance between the occupant and the seat of the vehicle is a reference distance, an input from the occupant;
setting a reference volume level of the speaker based on the input; and
adaptively increasing a volume level of the speaker with respect to the reference volume level when the distance between the occupant and the seat increases with respect to the reference distance, and adaptively decreasing the volume level of the speaker with respect to the reference volume level when the distance between the occupant and the seat decreases with respect to the reference distance.
10 . The method of claim 9 , wherein there are two or more occupants in the vehicle, and
wherein the voice guidance is voice guidance personalized for each of the two or more occupants.
11 . The method of claim 9 , wherein the signal generated from the vehicle includes an ultrasonic signal transmitted from a device mounted on the seat of the vehicle, and
wherein the distance information is determined based on information on a round-trip time of the ultrasonic signal reflected by the occupant.
12 . The method of claim 9 , wherein a location at which the voice guidance is output corresponds to the speaker mounted on the seat.
13 . The method of claim 9 , wherein a speaker includes at least one directional speaker, and
wherein the directional speaker includes a vibrator and a vibrating plate.
14 . The method of claim 13 , wherein the vibrator related to concentration of the voice guidance includes two or more bone conduction speakers, and
wherein the concentration of the voice guidance is determined based on a spacing between the bone conduction speakers.
15 . The method of claim 13 , wherein the vibrating plate related to sound quality of the voice guidance includes carbon fibers.