An apparatus for absorbing noise on cables contains a housing that consists of two shell elements articulated to one another. Each shell element is intended to hold a ferrite element. In the closed state of the housing, each end has an opening, so that a cable can pass through the housing. The inside of each end of the housing has a fixing means arranged on it that contains two U-shaped brackets.The mutually facing inner limbs of the two brackets form a slot in which the cable is clamped. The inner limbs are deformable transversely with respect to the direction of the cable.