System for generating anti-noise in an exhaust-gas line of a vehicle, comprising: a first electro acoustic transducer configured for generating a first acoustic signal based on an electric control signal, and being in communication with the exhaust-gas line via an acoustic line (4, 7), with the first acoustic signal entering the exhaust line in form of anti-noise after having passed the acoustic line; a second electro acoustic transducer configured for generating an electric measurement signal representing a second acoustic signal, and being in acoustic communication with the exhaust-gas line at the anti-noise coupling region; a control unit configured for generating the control signal based on the measurement signal; and a parameterizing unit adapted for determining a conforming phase parameter and a conforming magnitude parameter for the control function used by the control unit based on the transient response of the control unit; characterised in that the parameterizing unit is configured for determining at least one of a temporal characteristic of the control signal and the measurement signal; the parameterizing unit is configured to determine a transient time, an overshooting behaviour, and an instability of the operation for generating the control signal performed by the control unit from the temporal characteristics of at least one of the control signal and the measurement signal; and the parameterizing unit is configured to determine two borderline phase parameters from the different phase parameters ranging from -π to +π used for re-initializing the control unit, with the borderline phase parameters yielding an unstable control operation and enclosing an interval of phase parameters yielding a stable control operation. a first electro acoustic transducer configured for generating a first acoustic signal based on an electric control signal, and being in communication with the exhaust-gas line via an acoustic line (4, 7), with the first acoustic signal entering the exhaust line in form of anti-noise after having passed the acoustic line; a second electro acoustic transducer configured for generating an electric measurement signal representing a second acoustic signal, and being in acoustic communication with the exhaust-gas line at the anti-noise coupling region; a control unit configured for generating the control signal based on the measurement signal; and a parameterizing unit adapted for determining a conforming phase parameter and a conforming magnitude parameter for the control function used by the control unit based on the transient response of the control unit; characterised in that the parameterizing unit is configured for determining at least one of a temporal characteristic of the control signal and the measurement signal; the parameterizing unit is configured to determine a transient time, an overshooting behaviour, and an instability of the operation for generating the control signal performed by the control unit from the temporal characteristics of at least one of the control signal and the measurement signal; and the parameterizing unit is configured to determine two borderline phase parameters from the different phase parameters ranging from -π to +π used for re-initializing the control unit, with the borderline phase parameters yielding an unstable control operation and enclosing an interval of phase parameters yielding a stable control operation.