Method and apparatus for processing a signal.

摘要

A low pass filter (C) has its input (A,B) and its filtered output connected to respective inputs (D and G) of a selection device (E). The filter input and output are also applied to respective inputs (K and I) of a comparator (J) which compares the amplitudes of its two inputs and produces an output indicating which has the lower amplitude. The comparator output is applied to a control input (H) of the selection device (E) such that the signal with the lower amplitude is conveyed to an output (F).