| interference filter [´in·tǝr`fir·ǝns ¦fil·tǝr] ELECTRONICS 1. A filter used to attenuate artificial interference signals entering a receiver through its power line. 2. A filter used to attenuate unwanted carrier-frequency signals in the tuned circuits of a receiver. OPTICS An optical filter in which the wavelengths that are not transmitted are removed by interference phenomena rather then by absorbtion or scattering. |