title: Application of subharmonics for active sound design of electric vehicles.
abstract: The powertrain of electric vehicles generates an unfamiliar acoustical environment for customers. This paper seeks optimal interior sound for electric vehicles based on psychoacoustic knowledge and musical harmonic theory. The concept of inserting a virtual sound, which consists of the subharmonics of an existing high-frequency component, is suggested to improve sound quality. Subjective evaluation results indicate that the impression of interior sound can be enhanced in this manner. Increased appeal is achieved through two designed stimuli, which proves the effectiveness of the method proposed.
authors.affiliation: AeroAcoustics and Noise Control Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Republic of Korea gwak01@snu.ac.kr, goltongbam@snu.ac.kr, trombyw@snu.ac.kr.
authors.forename: Doo Young
authors.initials: DY
authors.lastname: Gwak
authors.affiliation: AeroAcoustics and Noise Control Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Republic of Korea gwak01@snu.ac.kr, goltongbam@snu.ac.kr, trombyw@snu.ac.kr.
authors.forename: Kiseop
authors.initials: K
authors.lastname: Yoon
authors.affiliation: AeroAcoustics and Noise Control Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Republic of Korea gwak01@snu.ac.kr, goltongbam@snu.ac.kr, trombyw@snu.ac.kr.
authors.forename: Yeolwan
authors.initials: Y
authors.lastname: Seong
authors.affiliation: Center for Environmental Noise and Vibration Research, Engineering Research Institute, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Republic of Korea solee@snu.ac.kr.
authors.forename: Soogab
authors.initials: S
authors.lastname: Lee