The RFI ingress into carriers outside the band of frequencies is estimated, and an error correcting signal derived from the estimation of the RFI ingress is subtracted form a received signal.

Furthermore an adjustable reduction in the high-frequency interference emissions from integrated circuits can thus be achieved.

An FM blender controller is used to attenuate high frequency noise and improve audio quality.

To prevent the rectifier from feeding high-frequency interference signals back into the mains, a second inductance (307) is to be connected in series with the first switch (308).

In one embodiment, the control signal is used as a data carrier in such a way that the data carrying high-frequency interfering pulses are transmitted at the control signal rate.

Said element rotates the phase of the transmitted high-frequency wanted and unwanted signals by approximately 180° in relation to that of the other signal transmission branch of the pair.