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Annoyance and sportiness perception of the acceleration sound by the driver and passengers
김성현,M. Ercan Altinsoy 한국음향학회 2021 韓國音響學會誌 Vol.40 No.6
This study presents a perceptual difference in acceleration sounds of a sporty sedan between the driver and passenger. We found a significant difference in annoyance and sportiness perception according to the acceleration sound level through subjective evaluations. The multimodal reproduction system, which can reproduce the driving image, motion, vibration, and sound, was applied for the test. A subjective experiment was conducted to evaluate the perceived intensity of annoyance and sportiness by varying the acceleration sound level in five steps of 3 dB. The experimental results showed that the driver perceives the acceleration sound less annoying than the passenger at a relatively low sound level. Meanwhile, the driver has perceived the acceleration sound more sporty than the passenger at a relatively high sound level. Moreover, it was found that passengers were 35 % less sensitive to an annoyance than drivers, whereas the driver was 74 % more susceptible to sportiness than passengers according to the sound level change. This finding is expected to be applied as a sound design strategy that differentiates the acceleration sound level in active sound design.
차량 능동 소음 제어 시스템에서 제어 위치 선택에 따른 소음 저감 성능에 관한 예비 평가
김성현,M. Ercan Altinsoy,김중관 한국소음진동공학회 2022 한국소음진동공학회 논문집 Vol.32 No.6
This study uses a modified cost function with weighted error signal channels to demonstrate that the vehicle active noise control system can focus control efforts on one specific seat. In a conventional active noise control system for road noise suppression inside a passenger car, the control algorithm targets the attenuation of all seats, hence affecting the maximum performance that can be obtained when applied to a single seat. To address this limitation, we employed weighting factors in the error signal to control the selected seat positions only. A practical active noise control system was implemented in a large sedan to investigate the effect of the weighting factor on the noise attenuation performance. Experimental results showed that the error weighting factor strategy increased attenuation of the target seats by up to 1.15dB more than in the case of the entire seat control.
Practical Implementation and Open Issues of Active Noise Control in the Automotive Industry
Seonghyeon Kim(김성현),M. Ercan Altinsoy,Young Man Kim(김영만),Dongjin Kim(김동진),Soonkwon Paik(백순권),Jun-Woo Lee(이준우),Shinkyu Kang(강신규),Dong Joo Lee(이동주),Bitna Lee(이빛나),Soyoun Moon(문소연) 한국소음진동공학회 2020 한국소음진동공학회 학술대회논문집 Vol.2020 No.11