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:
Jun. 19, 2018
Filed:
Apr. 05, 2017
Eberspächer Exhaust Technology Gmbh & Co. KG, Neunkirchen, DE;
Federico Buganza, Esslingen, DE;
Eberspächer Exhaust Technology GmbH & Co. KG, Neunkirchen, DE;
Abstract
A system has a sound generator () that generates superimposed sound to a sound to be manipulated. An error sensor () measures sound and outputs a corresponding feedback signal (e'(n)). A signal generator () generates a sound signal (y(n)). A controller () generates a control signals (λ(n)) and (λ(n)). The adder () subtracts one control signal (λ(n)) from the feedback signal (e′(n)) and outputs a modified feedback signal (en(n)) to the signal generator (). A weighter () weights the sound signal (y(n)) with the control signal (λ(n)) and outputs the weighted sound signal (y′(n)). The generated sound signal (y(n)) is a function of the modified feedback signal (e(n)). The controller () generates the control signals (λ(n), λ(n)) such that a value of the amplitudes of the feedback signal (∥e′(n)∥) corresponds to a predefinable value (Δ).