Active design of exhaust sounds

Patent metadata

Field	Value
Publication number	US-9386366-B2
Application number	US-201213691022-A
Country	US
Kind code	B2
Filing date	Nov 30, 2012
Priority date	Dec 2, 2011
Publication date	Jul 5, 2016
Grant date	Jul 5, 2016

Abstract

A sound generator system ( 1, 70 ), for a vehicle with internal combustion engine ( 15 ) and/or electric motor, has an electroacoustical transducer ( 11 ) and a control unit ( 24, 74 ). Transducer ( 11 ) produces an acoustical signal based on an electrical input signal and is connected to an acoustic line. The control unit ( 24, 74 ) creates a primary audio signal with frequencies from a given frequency range, to selectively amplify selected segments (“V”) of the primary audio signal so that the audio signal ( 41 ) amplified in the selected segments has a section in which all audio signal values correspond to a maximum amplitude value that is specified for the segment, and the audio signal ( 41 ) amplified in the selected segments is continuous at transitions from the at least one section to neighboring sections, and wherein the audio signal ( 41 ) generated by the control unit ( 24 ) forms the basis of the electrical input signal.

First claim

What is claimed is:

1. A sound generator system for a vehicle with internal combustion engine and/or with an electric motor, the sound generator system comprising:
an acoustic line configured for transmission of the sound to the surroundings of the vehicle and/or into an exhaust line of the vehicle;
an electroacoustical transducer configured to produce an acoustical signal in dependence on an electrical input signal, the electroacoustical transducer being connected to the acoust…

Assignees

• Eberspaecher Exhaust Tech Gmbh

Inventors

• Koch Viktor
• Jebasinski Rolf

Classifications

• G10K2210/12822

  Physics · mapped topic

• H04R1/22 Primary

  Electricity · mapped topic

• G10K15/02 Primary

  Physics · mapped topic