Patent ID: 8270628

Claim:
A method for influencing noise, wherein a noise source generates the noise with a substantially periodic variable excitation, and wherein a reference variable which is characteristic of the noise source, is supplied at successive supply instants (t i ), comprising the method steps: reading out at least a first value (N i−1 ), of the reference variable at a first supply instant (t i−1 ) and a second predetermined value at a second supply instant (t i ); generating a reference signal at at least one instant (t) between the second supply instant (t i ) and a third supply instant (t i+1 ) as a function of the first and second values that were read out; supplying the reference signal to a device for actively influencing noise, which generates activation signals for at least one actuator as a function of the reference signal, wherein the at least one actuator emits compensation sound, which interferes with the noise; and determining the change (ΔN) of the reference variable between the first supply instant (t i−1 ) and the second supply instant (t i ); wherein the reference signal is extrapolated as a function of the value (N i ) of the reference variable read out at the second supply instant (Ti) and of the change (ΔN) of the reference variable.