Automatic dynamic compander circuit - has second variable element regulated by same control voltage, and auxiliary voltage is added to reference voltages

摘要

The compander has at least one variable control element varying the transmission function in the signal path. A branch circuit generates a control voltage. In comprises at least a further variable control element and a control voltage generator with a comparator for the AC voltage and reference voltages. The control voltage is also applied to the control element in the branch circuit for its control in the opposite sense. The control voltage generator (5) has at least one further control input (13), and an auxiliary voltage analogue to the DC control voltage (Ust) is added to at least one reference voltage and/or to the reference potentila of the AC voltage.