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주파수 영역과 시간 영역의 특성을 고려한 래틀 소음 평가 Process에 대한 연구
이해승(Lee Hae Seung),채창국(Chae Chang Gook) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, the interior sound of vehicle is reduced drastically. So the whine. rattie, and pattern noises which were not so important are getting more and more crucial in deciding NVH characteristics and productivity. In traditional method. Rattle sound was rated by subjective evaluation than objective analysis. And we had to spend much time and cost on evaluating the rattle noise. by human ear. Moreover. subjective evaluation may result in error because of human's fatigue. In this research, We modeled rattle index by consider ing characteristics of time and frequency domain and proposed rattle index which was certified by subjective rating.