Patent · US Active

Method of generating a drive signal for a loudspeaker arranged in a motor vehicle, an exhaust system for an engine and a sound system for a passenger cell

US9990913B2 · kind B2 · utility

3Cited by

4References

20Claims

0Family size

Assignee

Faurecia Emissions Control Technologies, Germany GmbH · DE

Inventors

Gerhard Zintel · Wendelstein, DE
Martin Unbehaun · Nuremberg, DE

Key dates

Filing date	Jan 12, 2017
Grant date	Jun 5, 2018
Priority date	—
Expiry date	Jan 12, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG10K2210/3046
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A method of generating a drive signal for a loudspeaker in an exhaust system of an engine of a vehicle or inside or outside a passenger cell includes providing a predetermined source signal for a desired additional sound in a time domain comprising a plurality of signal components of different frequencies; analyzing the source signal based on a phase of the source signal and/or a phase of at least one oscillation in the source signal; identifying a phase of engine noise and/or a phase of at least one oscillation existing in engine noise; shifting the phases of the source signal and/or the oscillation existing in the source signal based on phases identified in engine noise and/or in oscillation existing in engine noise, the relationship of phases of individual oscillations of the source signal among each other being preserved; and generating the drive signal based on the phase-shifted source signal.

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