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:
May. 22, 2018
Filed:
Apr. 05, 2017
Eberspächer Exhaust Technology Gmbh & Co. KG, Neunkirchen, DE;
Viktor Koch, Plochingen, DE;
Federico Buganza, Esslingen, DE;
Eberspächer Exhaust Technology GmbH & Co. KG, Neunkirchen, DE;
Abstract
A system includes a sound generator () that generates sound superimposed to sound to be manipulated. An error sensor () measures superimposed sound and outputs a corresponding feedback signal (e'(n)). A signal generator () generates a sound signal (y(n)). A controller () generates a control signal (λ(n)) representing a value of a sequence of rational numbers. A weighter () weights the generated sound signal (y(n)) with the control signal (λ(n)) and inverts it. An adder () adds the weighted/inverted sound signal to the feedback signal (e′(n)) and outputs a modified feedback signal (e(n)) to the signal generator (). A weighter () weights the generated sound signal (y(n)) with the difference from one and with the control signal (λ(n)) and outputs the sound signal y′(n). The generated sound signal (y(n)) is a function of the modified feedback signal (e(n)).