A feedback compensator for a hearing aid device has a filter arrangement
that splits a signal path, to implement an adaptive feedback compensation
with only one buffer memory, two splitting nodes, and two addition nodes.
The feedback compensation ensues only in the feedback-susceptible
frequency range of the input signal. In addition to the filtering of the
input signal, it is advantageous to feed to the adaptive feedback
compensation filter a bandwidth-limited signal that is taken from the
amplified output signal.