Active sound simulation device based on Void-Kalman filter

Abstract

The invention relates to an active sound simulation device based on a Void-Kalman filter. The active sound simulation device comprises an FPGA active sound design module, an MCU control sound production module and a PC host computer; the FPGA active sound design module mainly using the Void-Kalman filter to extract the order signal of engine sound source, and the extracted order signal is downloaded to the MCU control module through an SPI interface in real time. At that same time, the FPGA active sound design module receives a parameter signal of the MCU control sound production module through the SPI interface; the MCU control sound production module is used for completing and controlling the real-time generation of the simulated engine sound according to the order signal extracted by the FPGA active sound design module. The PC host computer downloads the control data from the FPGA active sound design module, and requests and receives the data sent by the FPGA active sound design module. The device uses the Void-Kalman filter to extract the sound order signal, and the MCU master control module controls the sound generation to obtain sound rich in change, which can remind the pedestrian, reduce the safety hidden danger, and lets the driver feel the pleasure of driving.

Description

Technical field [0001] The invention belongs to the technical field of active sound generation of electric vehicles and hybrid vehicles, and specifically relates to an active sound simulation device based on a Void-Kalman filter. Background technique [0002] In recent years, with the country’s emphasis on energy conservation, emission reduction, and green environmental protection, new energy vehicles have developed rapidly and sales have continued to increase. Some countries have even introduced a timetable for the ban on fuel vehicles. This has made electrification and intelligence a key factor in the development of automobiles. An inevitable trend, electric vehicles have been incorporated into the development strategies of many countries. [0003] At present, many countries have issued relevant technical indicators, and regulations restrict the upper limit of automobile noise; however, with the development of new energy vehicles, new problems have arisen in automobile NVH. Soun...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an active sound simulation device based on a Void-Kalman filter to solve the problem that the existing pedestrian warning sound system or the active sound system in the car cannot realize online adjustment of the components of the various order signals of the simulated engine sound The technical problem that the size and frequency components of the sound cannot change with the vehicle operating conditions

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