NOISE REDUCING DEVICE, CAPABLE OF PROVIDING SILENT RIDING COMFORT TO A PASSENGER BY MINIMIZING AN INFLOW OF EXTERNAL NOISE WHEN DRIVING A VEHICLE

摘要

PURPOSE: A noise reducing device is provided to minimize the fatigue of a passenger even though the passenger listens to music for a long time as external noise is eliminated and only audio signals are transmitted.;CONSTITUTION: A noise reducing device comprises an inverse phase signal generator(13), a signal input unit(15), a signal mixing unit(16), and a signal transmitting unit. The inverse phase signal generator generates inverse phase signals with respect to noise input from outside of a vehicle. The signal input unit inputs sound sources for a passenger. The signal mixing unit receives the inverse phase signals and the sound sources, thereby mixing the same. The signal transmitting unit amplifies the output of the signal mixing unit, thereby transmitting to the passenger of the vehicle.;COPYRIGHT KIPO 2013