Muller-bbm Gmbh

Müller-bbm Active Sound Technology Gmbh

Florian Walter

Rolf Schirmacher

Roland Lippold

Fabian Evert

Method for influencing noise, wherein a noise source (), in particular an engine in a motor vehicle, generates the noise with a substantially periodically variable excitation, and wherein a reference variable which is characteristic of the noise source, in particular an engine speed, is present at predetermined successive supply instants (t), comprising the method steps; reading out at least a first value (N) of the reference variable at a first supply instant (t) and a second predetermined value at a second supply instant (t); generating the reference signal () at at least one instant (t) between the second supply instant (t) and a third supply instant (t) as a function of the first and second values that were read out; and sending 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.

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Pforzheim, Germany

Florian Walter