公开(公告)号：US11062690B2

公开(公告)日：2021-07-13

申请号：US16225379

申请日：2018-12-19

Applicant: Magneti Marelli S.p.A.

Inventor： Simona De Cesaris ,  Saverio Armeni ,  Walter Nesci ,  Massimo Ambrosino ,  Pierangelo Pagliano ,  Marco La Sana

IPC: G10K15/04 ,  G10K15/02

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.

公开(公告)号：US20190206384A1

公开(公告)日：2019-07-04

申请号：US16225379

申请日：2018-12-19

Applicant: Magneti Marelli S.p.A.

Inventor： Simona De Cesaris ,  Saverio Armeni ,  Walter Nesci ,  Massimo Ambrosino ,  Pierangelo Pagliano ,  Marco La Sana

IPC: G10K15/04

CPC classification number: G10K15/04 ,  G10K15/02 ,  G10K2210/1282 ,  G10K2210/51

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.