Method and apparatus for leveling an increasing or decreasing slope of an AM modulated receiving signal

摘要

A method and an apparatus for leveling an increasing or decreasing slope of an AM modulated receiving signal attenuates said AM modulated receiving signal by means of an attenuation curve with a stepwise slope corresponding to said increasing or decreasing slope of said AM modulated receiving signal, filters said attenuated AM modulated receiving signal within AM-demodulation with a lowpass infinite-impulse-response filter (14) of at least second order and increases the level of each delay-unit's output signal of said infinite-impulse-response filter (14) each time a step in said attenuated AM modulated receiving signal arriving at the input of said infinite-impulse-response filter (14).