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:
Jul. 13, 2021
Filed:
Dec. 19, 2018
Magneti Marelli S.p.a., Corbetta, IT;
Simona De Cesaris, Corbetta, IT;
Saverio Armeni, Corbetta, IT;
Walter Nesci, Corbetta, IT;
Massimo Ambrosino, Corbetta, IT;
Pierangelo Pagliano, Corbetta, IT;
Marco La Sana, Corbetta, IT;
Magneti Marelli S.p.A., Corbetta, IT;
Abstract
Described herein is an apparatus for active control of the sound of the engine of a land vehicle, which comprises a device for detecting a fundamental frequency of the sound of the engine, and comprises a generator of signals representing sound waves that have spectral characteristics that depend upon the aforesaid fundamental frequency. The apparatus comprises a modulator, which includes a module that applies a modulation to said waveforms so as to control a value of roughness or fluctuation strength of an audio signal for driving an actuator, which generates an engine noise.