The radio receiver receives several echoes of the same signal, and the constructive or destructive equalization filters.
2.
Attenuation distortion can still occur in a properly equipped circuit if this equalization filter is not properly maintained or adjusted.
3.
Originally, key click was considered a design defect and Hammond worked to eliminate or at least reduce it with equalization filters.
4.
The blind equalization problem can now be formulated as follows; Given the received signal r [ k ], find a filter w [ k ], called an equalization filter, such that