The present disclosure relates to a vehicle and a method for controlling thereof, and more particularly to a technique for removing noise generated in a vehicle air conditioner. The vehicle may include an air conditioner, comprising: a speaker configured to output sound; a blower fan configured to blow air that is heat-exchanged in the air conditioner; an air vent configured to regulate a discharge amount of the air discharged into the vehicle; and a controller configured to sense a noise acoustic signal of the blower fan that is determined corresponding to an opening degree of the air vent, and to control the speaker to to output by generating an acoustic signal having an opposite phase to the sensed noise acoustic signal.

The present disclosure relates to a vehicle and a method for controlling thereof, and more particularly to a technique for removing noise generated in a vehicle air conditioner. The vehicle may include an air conditioner, comprising: a speaker configured to output sound; a blower fan configured to blow air that is heat-exchanged in the air conditioner; an air vent configured to regulate a discharge amount of the air discharged into the vehicle; and a controller configured to sense a noise acoustic signal of the blower fan that is determined corresponding to an opening degree of the air vent, and to control the speaker to to output by generating an acoustic signal having an opposite phase to the sensed noise acoustic signal.

According to one embodiment, a rotor-stator blade interference noise reduction system includes a plurality of rotor blades rotating around a center axis, a plurality of stator blades facing the plurality of rotor blades and being equal in number to the plurality of rotor blades, a plurality of speakers installed approximately along a rotor blade plane defined by the plurality of rotor blades rotating and generating control sound, and an evaluation microphone, in which a distance from the evaluation microphone to one of the plurality of speakers, a distance from the evaluation microphone to another of the plurality of speakers, and a distance from the evaluation microphone to the center axis, are approximately equal.

According to one embodiment, a rotor-stator blade interference noise reduction system includes a plurality of rotor blades rotating around a center axis, a plurality of stator blades facing the plurality of rotor blades and being equal in number to the plurality of rotor blades, a plurality of speakers installed approximately along a rotor blade plane defined by the plurality of rotor blades rotating and generating control sound, and an evaluation microphone, in which a distance from the evaluation microphone to one of the plurality of speakers, a distance from the evaluation microphone to another of the plurality of speakers, and a distance from the evaluation microphone to the center axis, are approximately equal.

An acoustic liner may include a core with a plurality of resonator chambers, a perforated top sheet coupled to the core, and a backskin coupled to the core. A thermoacoustic speaker including nanomaterials may be coupled to at least one of the core, the backskin, and the perforated top sheet. A voltage may be applied to the thermoacoustic speaker. The thermoacoustic carbon nanotube speaker may create a dynamic excitation within a resonator chamber in the core. The dynamic excitation may change the liner acoustic impedance to achieve optimum noise attenuation over a wide range of frequencies or engine operating conditions.

Sound attenuation is performed using a sound attenuation panel using an electromagnetic or electrostatic response unit to modify resonance. The sound attenuation panel has an acoustically transparent planar, rigid frame divided into a plurality of individual cells configured for attenuating sound. In one configuration, each cell has a weight fixed to the membrane. The planar geometry of each said individual cell, the flexibility of the membrane, and the weight establish a base resonant frequency for sound attenuation. The electromagnetic or electrostatic response unit is configured to modify the resonant frequency of the cell.