Patent · US Active

Method and system for actively influencing noise, and use thereof in a motor vehicle

US8270628B2 · kind B2 · utility

5Cited by

0References

18Claims

0Family size

Assignee

Müller-BBM · DE

Inventors

Fabian Evert · Germering, DE
Roland Lippold · Dresden, DE
Rolf Schirmacher · Germering, DE
Florian Walter · Aurora, US

Key dates

Filing date	Jun 23, 2006
Grant date	Sep 18, 2012
Priority date	—
Expiry date	May 8, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG10K2210/128
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

Method for influencing noise, wherein a noise source (16), 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 (ti), comprising the method steps; reading out at least a first value (Ni−1) of the reference variable at a first supply instant (ti−1) and a second predetermined value at a second supply instant (ti); generating the reference signal (12) at at least one instant (t) between the second supply instant (ti) and a third supply instant (ti+1) as a function of the first and second values that were read out; and sending the reference signal (12) to a device for actively influencing noise (11), which generates activation signals (13) for at least one actuator (14) as a function of the reference signal (12), wherein the at least one actuator (14) emits compensation sound, which interferes with the noise.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.