An air filter , comprising: a filter media layer adapted to capture and filter one or more impurities from air; and one or more acoustic wave generating means attached at one or more sides of the filter media layer , wherein the one or more acoustic wave generating means generates acoustic waves to be propagated into the filter media layer , wherein the propagation of the acoustic waves into the filter media layer facilitates in increasing travel distance of the impurities inside the filter media layer thereby enabling the filter media layer to intercept the one or more impurities, generating turbulence in the filter media layer thereby enabling the filter media layer to enhance the capturing of the one or more impurities based on enhanced turbulent diffusion effect, and generating frictional electrostatic charges on the filter media layer thereby enabling the filter media layer to attract the one or more impurities; characterized in that the air filter comprises a frame adapted to secure the filter media layer and the one or more acoustic wave generating means ; and an electronic circuit or a pre-programmed chip configured to control a frequency of the acoustic waves generated by the one or more acoustic waves generating means ; wherein the one or more acoustic wave generating means comprises either of a speaker, an acoustic transducer, an ultrasonic transducer, and a device including a single driver element or a voice coil used to move and control a diaphragm. a filter media layer adapted to capture and filter one or more impurities from air; and one or more acoustic wave generating means attached at one or more sides of the filter media layer , wherein the one or more acoustic wave generating means generates acoustic waves to be propagated into the filter media layer , wherein the propagation of the acoustic waves into the filter media layer facilitates in increasing travel distance of the impurities inside the filter media layer thereby enabling the filter media layer to intercept the one or more impurities, generating turbulence in the filter media layer thereby enabling the filter media layer to enhance the capturing of the one or more impurities based on enhanced turbulent diffusion effect, and generating frictional electrostatic charges on the filter media layer thereby enabling the filter media layer to attract the one or more impurities; increasing travel distance of the impurities inside the filter media layer thereby enabling the filter media layer to intercept the one or more impurities, generating turbulence in the filter media layer thereby enabling the filter media layer to enhance the capturing of the one or more impurities based on enhanced turbulent diffusion effect, and generating frictional electrostatic charges on the filter media layer thereby enabling the filter media layer to attract the one or more impurities; characterized in that the air filter comprises a frame adapted to secure the filter media layer and the one or more acoustic wave generating means ; and an electronic circuit or a pre-programmed chip configured to control a frequency of the acoustic waves generated by the one or more acoustic waves generating means ; wherein the one or more acoustic wave generating means comprises either of a speaker, an acoustic transducer, an ultrasonic transducer, and a device including a single driver element or a voice coil used to move and control a diaphragm. <EOS>