Patent ID: 11948547
Assignee: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
Field: Other consumer goods (Other fields)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A computer readable non-transitory recording medium including instructions recorded therein for dynamically changing reference sensors to be used for active noise control of a vehicle according to a target zone and current noise characteristics, wherein, when the instructions are executed by a processor of a computer device, the computer device is configured to perform:
obtaining a reference signal indicating vibration introduced from a road from each of sensors provided in the vehicle, and obtaining a noise signal indicating indoor noise from at least one microphone positioned in the target zone in a compartment of the vehicle;
determining a coherence value between the noise signal and a reference signal corresponding to each of the sensors, and selecting a sensor corresponding to a reference signal with a largest coherence value among the sensors, as a first entry of a candidate list;
repeating a process in which a sensor adding the largest coherence information quantity to a current candidate list among the sensors is selected as a new entry of the current candidate list, until a number of entries included in the candidate list reaches a preset number;
setting a reference sensor set which is to be used in the active noise control using sensors included in the candidate list, when the number of the entries included in the candidate list reaches the preset number; and
generating a noise control signal for the target zone based on reference signals obtained from the reference sensors corresponding to the reference sensor set.