公开(公告)号：US20160192095A1

公开(公告)日：2016-06-30

申请号：US14977126

申请日：2015-12-21

Applicant: Magneti Marelli S.p.A.

Inventor： Antonio MARCELLI ,  Saverio ARMENI ,  Walter NESCI

IPC: H04R29/00

CPC classification number: H04R29/00 ,  F01N1/065 ,  F01N9/00 ,  F01N9/005 ,  F01N2900/0412 ,  G10K15/02 ,  G10K2210/12822 ,  G10K2210/3025 ,  G10K2210/3032 ,  G10K2210/51 ,  H04R2499/13 ,  Y02T10/47

Abstract: A method for performing an active profiling of the sound emitted by a vehicle engine including the steps of injecting second acoustic waves (MW), which are able to combine with the first acoustic waves (EW) in a merge point in said primary propagation path and to generate third resulting acoustic waves (RW); and generating a driving signal for the diffuser by regulating the amplitude of harmonics of the driving signal (SP) as a function of reference acoustic waves and of a workpoint of the engine, calculating equalization coefficients (α1, . . . , αM) to be applied to the amplitudes of said harmonics of the driving signal (SP) via a self-tuning procedure, and comparing the reference acoustic waves (TW) with a simulation (SRW) of the resulting waves. The simulation (SRW) is obtained by applying to a simulation of the second acoustic waves a model of the secondary propagation path.

Abstract translation: 一种用于执行由车辆发动机发出的声音的主动轮廓的方法，包括以下步骤：将能够与所述主传播路径中的合并点中的第一声波（EW）组合的第二声波（MW）注入;以及 以产生第三结果声波（RW）; 以及通过调节作为参考声波和发动机的工作点的函数的驱动信号（SP）的谐波的振幅来产生漫射器的驱动信号，计算均衡系数（α1，...，αM）为 经由自整定程序对驱动信号（SP）的所述谐波的振幅施加，并将参考声波（TW）与所得到的波的模拟（SRW）进行比较。 仿真（SRW）通过应用第二声波的模拟来获得二次传播路径的模型。