Filter circuit for stereo transmitter, has active all-pass filter connected to output of low pass filter

摘要

The filter circuit includes low pass filters (10,14). An active RC all-pass filter (12) is connected to the output of low pass filter (10). At least two poles of the filter circuit lie at the frequencies to be damped. The low-pass filter has preferably a passive first-order low pass filter (14) connected at its input (34).