Hyundai Motor Company

Kia Corporation

Kia Motors Corporation

Korea Advanced Institute of Science and Technology

Seoul National University

A.r.e., Inc.

Jung Keun You

Kaang Dok Yee

Mun Hwan Cho

Chi Sung Oh

Joongkwan Kim

Myoung Ok Lee

Kaangdok Yee

Jinmo Lee

Jong Won Lee

Jinseok Hong

MunHwan Cho

Hyun Jin Song

Jin Mo Lee

Youngjin Park

Jung Woo Choi

Yeon June Kang

ChiSung Oh

Joong Kwan Kim

Hyungjun So

Hyoun Suk Kim

Jong Gyu Kang

Myoungok Lee

Yun Seol Park

Yeongseok Kim

Kang Dok Yee

A sound control apparatus for a vehicle is capable of implementing a separated sound zone in response to a change in position of a passenger's head. A separated sound zone control method for a vehicle includes determining a current position of the passenger's head, and when the determined current head position corresponds to a predicted head position, outputting an output sound datum corresponding to the predicted head position through a plurality of speakers, where the output sound datum is selected by applying a sound data sample to a control filter set configured to form a separated sound zone corresponding to the predicted head position.

Sound control apparatus for vehicles and method of controlling the same

A sound control device and a method for controlling the sound control device provided in a vehicle. The method comprises obtaining an input signal including at least one of a reference signal of an accelerometer or an error signal obtained from a sound signal of a microphone; adjusting low frequency components of the input signal based on magnitudes of the low frequency components of the input signal and a preset reference magnitude; generating a noise control signal based on the adjusted input signal; and transmitting the noise control signal so that a speaker outputs the noise control signal.

Sound control device of vehicle and method for controlling the same

A sound control device and a method for controlling the sound control device in a vehicle. The method comprises obtaining an error signal indicating residual noise in the vehicle, and an audio signal; calculating magnitudes of low frequency components of the error signal; adjusting magnitudes of low frequency components of the audio signal according to the magnitudes of the low frequency components of the error signal; and outputting the adjusted audio signal through a speaker.

A simulation system and method for simulating a noise environment of a vehicle includes a memory configured to store a reference sample signal and a noise sample signal, a control unit electrically connected to the memory and configured to generate a reference signal based on the reference sample signal, generate a noise signal based on the noise sample signal, and transmit the reference signal to a noise control system, and a speaker electrically connected to the control unit and configured to convert the noise signal into a sound wave and output the sound wave.

Simulation method and system for noise environment of vehicle

A sound control device mounted in a vehicle and control method include measuring a drive signal input to a speaker, wherein the drive signal is generated in response to an input signal including at least one of a noise control signal and an audio signal, estimating a state of a voice coil of the speaker including at least one of displacement and temperature of the voice coil, based on the drive signal and a model of the speaker, and adjusting the input signal based on the state of the voice coil.

Sound control device of vehicle and control method thereof

The present disclosure provides a computer-implemented method for sound masking. The method includes identifying one class among a plurality of classes based on frequency characteristics of a voice of a first occupant in a vehicle, obtaining reference voice data corresponding to the identified class, generating a personalized masking sound for the first occupant by synthesizing the reference voice data with white noise, and controlling an output of the personalized masking sound.

Method and device for personalized sound masking in vehicle

A sound control device mounted in a vehicle and control method thereof includes obtaining whether an audio function is ON or OFF, and determining a maximum limit value for a displacement of a speaker due to a noise control signal according to whether the audio function is ON or OFF.

Sound control device and control method thereof

A method for controlling a sound control device in a vehicle includes obtaining at least one of a reference signal obtained from a sensor or an error signal obtained from a sound signal of a microphone, estimating a road surface environment corresponding to a road surface on which the vehicle is traveling based on the reference signal, and adjusting a gain for generating a noise control signal having a magnitude within a preset range based on at least one of the road surface environment or the error signal.

An active noise control system selects one reference sensor providing a reference signal with the largest coherence to a noise signal, among a plurality of available reference sensors, as a first entry of a reference sensor set. After selecting the first entry, the active noise control system repeats a process in which a sensor capable of providing the largest information quantity to a current reference sensor set among remaining sensors is selected as a new entry of a reference sensor set, until a desired number of sensors is reached or a desired control level is reached. When the reference sensor set is determined, the active noise control system utilizes the entries of the reference sensor set to generates a noise control signal suitable for canceling the noise signal.

Information quantity-based reference sensor selection and active noise control using the same

A sound control device in a vehicle and control method thereof may include obtaining energy per unit time of an audio signal corresponding to a preset low frequency band, calculating an allowable reference value based on a difference between a magnitude of energy per unit time of the audio signal and a magnitude of a preset maximum allowable input of a speaker, monitoring whether a magnitude of energy per unit time of a noise control signal for eliminating noise in the vehicle exceeds the allowable reference value, and adjusting a magnitude of the noise control signal when the magnitude of energy per unit time of the noise control signal exceeds the allowable reference value.

Vehicle sound control device and method thereof

An active noise control apparatus of vehicles capable of making it difficult for a passenger in a vehicle to hear the voice of another passenger, achieving privacy protection, and a method of controlling the same are disclosed. The active noise control method includes primarily determining a noise level based on a first microphone signal input through a microphone corresponding to a first seat, secondarily determining whether to output an anti-noise signal generated based on the first microphone signal and the magnitude of the anti-noise signal based on the noise level and the level of the first microphone signal, and outputting the anti-noise signal through a headrest speaker of a second seat in response to the secondary determining.

Active noise control apparatus for vehicles and method of controlling the same

A method and apparatus of controlling a sound using an audio system in a vehicle, includes receiving seat posture information related to a seat by occupied an occupant among seats in a vehicle, determining at least one speaker to output a sound among a plurality of speakers in the vehicle according to the seat posture information, and generating a control signal to control the sound output by the at least one speaker according to the seat posture information.

Method and apparatus for controlling sound according to seat posture in vehicle

A vehicle may include: a feedback device; a bio-signal sensor configured to measure a bio-signal of a user; and a controller operatively coupled to the feedback device and the bio-signal sensor, the controller including a memory configured to store at least one program instruction and processor configured to execute the at least one program instruction. The controller may be configured to: determine information characterizing a current emotional state of the user based on the bio-signal; calculate, based on a difference value between the current emotional state and a target emotional state, an operation ratio between a first mode for controlling operation of the feedback device to decrease a degree of excitability of the user and a second mode for controlling the operation of the feedback device to increase a degree of positivity of the user; and control the operation of the feedback device for a predetermined time based on the operation ratio.

Vehicle and method for controlling the same

The present disclosure relates to a noise control apparatus, vehicle having the same and method for controlling the vehicle to reduce indoor noise. In accordance with an aspect of disclosure, the vehicle collects sound by using a sound collector while driving the vehicle; detects vibration occurring in the vehicle by using a vibration detector; detects an occupant in the vehicle by using an occupant detector; generates a virtual reference signal based on an actual reference signal for the detected vibration; acquires location information of the occupant's ear based on the occupant information; generates a virtual error signal based on the acquired ear location information and the actual noise signal for the collected sound; generates a noise control signal based on the virtual error signal and the virtual reference signal; and outputs the generated noise control signal as sound.

Growing community of inventors

Suwon-si, South Korea

Jung Keun You