http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
음질요소를 고려한 작동모드에 따른 진공청소기 출력소음의 음질 인덱스 사례 연구
정재은(Jeong, Jae-Eun),양인형(Yang, In-Hyung),박군동(Park, Goon-Dong),오재응(Oh, Jae-Eung) 한국소음진동공학회 2010 한국소음진동공학회 논문집 Vol.20 No.12
The conventional noise control attempts to simply reduce the level of product noise. But it is very straight forward way that we have considered human perception on noise. Since human listening is very sensitive to sound. Evaluation of the sound quality of a vacuum cleaner is studied base on human sensibility engineering. In this paper, we choose six vacuum cleaners that are sold in Korea and reduced noise control. The sound quality of vacuum cleaner noise is analyzed by employing the subjective evaluation and by representing them in terms of the objective quantities. Semantic differential method is used to study sound quality Evaluation. To analyze the sound quality of vacuum cleaner noise, consider the coefficients of correlation between sound metrics and subjective rating. The linear regression models were obtained for the subjective evaluation and sound quality metrics.
기여도 함수 기법에 의한 차량 시트의 래틀 노이즈 규명
서범준(Seo, Bum-June),정재은(Jeong, Jae-Eun),박군동(Park, Goon-Dong),김학균(Kim, Hak-Gyun),박상도(Park, Sang-Do),오재응(Oh, Jae-Eung) 한국소음진동공학회 2011 한국소음진동공학회 논문집 Vol.21 No.8
Recently, customers have been concerned about vehicle NVH depending on vehicle designing and manufacturing technologies development. In choosing vehicle, vehicle NVH is becoming the most important factor to customers. Especially, a seat is the final stage of vibration transfer path to passengers from all sources of vibration like engine, transmission and etc. And seat is the nearest component from driver's ear. For this reason, seat is the most important component that directly related to ride comfort for passengers. And driver can be influenced sensitively by BSR caused by seat. Thus, evaluating the vibration characteristics of vehicle seat and BSR caused by vehicle seat is necessary to reduce the seat BSR. The rattle noise occurred from seat has evaluated through sound source visualization and multi-dimensional spectral analysis - coherence function technique in this paper. Vibration characteristics of the seat has verified through modal test.