An automatic dynamic equalizer includes left and right input terminals, an input adder and left and right output adders. The left and right input terminals are connected to inputs of the input adder and inputs of the left and right output adder, respectively. The output of the input adder is connected...http://www.google.fr/patents/US4739514?utm_source=gb-gplus-shareBrevet US4739514 - Automatic dynamic equalizing
