The study of sound source synthesis IC to realize the virtual engine sound of a car powered by electricity without an engine

Jae-Eul Koo; Jae-Gyu Hong; Young-Woog Song; Gi-Chang Lee

doi:10.7776/ASK.2021.40.6.571

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2021 Vol.40, Issue 6 Preview Page Next Page

Research Article

The study of sound source synthesis IC to realize the virtual engine sound of a car powered by electricity without an engine 엔진 없이 전기로 구동되는 자동차의 가상 엔진 음 구현을 위한 음원합성 IC에 관한 연구

30 November 2021. pp. 571-577

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Abstract

This study is a study on System On Chip (SOC) that implements virtual engine sound in electric vehicles without engines, and realizes vivid engine sound by combining Adaptive Difference PCM (ADPCM) method and frequency modulation method for satisfaction of driver's needs and safety of pedestrians. In addition, by proposing an electronic sound synthesis algorithm applying Musical Instrument Didital Interface (MIDI), an engine sound synthesis method and a constitutive model of an engine sound generation system are presented. In order to satisfy both drivers and pedestrians, this study uses Controller Area Network (CAN) communication to receive information such as Revolution Per Minute (RPM), vehicle speed, accelerator pedal depressed amount, torque, etc., transmitted according to the driver's driving habits, and then modulates the frequency according to the appropriate preset parameters We implemented an interaction algorithm that accurately reflects the intention of the system and driver by using interpolation for the system, ADPCM algorithm for reducing the amount of information, and MIDI format information for making engine sound easier.

Keywords

Virtual engine sound

Interpolation

Frequency modulation

Musical Instrument Didital Interface (MIDI)

Pipe-lined architecture

본 연구는 기존의 엔진 없이 전기로 운행되는 자동차에 가상의 엔진소리를 구현해주는 반도체 에 관한 연구로, 운전자의 욕구 및 보행자의 안전을 지키기 위해 Adaptive Difference PCM(ADPCM) 방식과 Frequency modulation 방식을 조합하여 생생한 엔진음을 구현하였다. 또한 미디를 응용하는 전자음 합성 알고리즘을 제안하여 엔진음 합성방법, 엔진음 발생 시스템의 구성 모델을 제시한다. 본 연구는 운전자와 보행자를 모두 만족시키기 위해 캔 통신을 이용하여 운전자의 운전 습관에 따라 전해지는 엔진회전량, 차량 속도, 가속 페달 눌림 량, 토크 등의 정보를 받은 후, 미리 설정된 적절한 파라미터에 따라 주파수 변조를 위한 인터폴레이션, 정보량 축소를 위하 ADPCM 알고리즘, 엔진음을 쉽게 만들기 위한 미디 포맷을 이용하여 시스템과 운전자의 의도를 정확히 반영할 수 있는 인터렉션 알고리즘을 구현하였다.

키워드

가상 엔진 음

인터폴레이션

주파수 변조

미디

파이프라인 구조

References

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Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 40
No :6
Pages :571-577
Received Date : 2021-08-02
Revised Date : 2021-09-10
Accepted Date : 2021-09-23
DOI :https://doi.org/10.7776/ASK.2021.40.6.571

The Journal of the Acoustical Society of KoreaISSN:1225-4428(Print) 2287-3775(Online)한국음향학회

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