The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2012
Filed:
Jun. 23, 2006
Fabian Evert, Germering, DE;
Roland Lippold, Dresden, DE;
Rolf Schirmacher, Germering, DE;
Florian Walter, Pforzheim, DE;
Fabian Evert, Germering, DE;
Roland Lippold, Dresden, DE;
Rolf Schirmacher, Germering, DE;
Florian Walter, Pforzheim, DE;
Müller-BBM, Planegg, DE;
Abstract
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.