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논문 기본 정보

자료유형
학술대회자료
저자정보
장진만 (르노삼성자동차) 김기동 (르노삼성자동차) 김준완 (르노삼성자동차) 김증희 (르노삼성자동차)
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2011년 한국자동차공학회 학술대회 및 전시회
발행연도
2011.11
수록면
545 - 551 (7page)

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초록· 키워드

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In general, the main source of vehicle noise is the ignition of engine and to diminish the degree of the noise, exhaust system is used as complicated filters for attenuating the noise more or less. But, even these kinds of filters are playing their roles at their expected frequencies bands, some noises still can be detected by passengers. They are so called ‘abnormal noises’ ,which are discovered when their anti-filters are working well, and it is very difficult to find what is the real problem and what is the basis of this phenomenon. Usually, frequency analysis is the most useful method for studying noise phenomena, but main effect of abnormal noise comes from listener’s feeling, therefore only frequency analysis process is not enough to clarify not only the cause but also the phenomenon itself.
In this study, one of the abnormal noise, which can be detected very easily at the tail pipe, has been examined by mathematical way to define the cause of feeling of abnormal noise more effectively and precisely, furthermore also noise filter development process has been developed as a result in order to design proper filter system for exhaust system. For the validation of this calculation and design process, virtual noise has been exerted to calculated filters which had been designed properly by the calculation of former step and then, the noise has been accessed as a listener’s feeling by sound feeling matrices of octave band modulation.

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Abstract
1. 서론
2. 음향신호의 주파수분석법과 변조신호
3. 음향특성행렬 (Sound quality matrix)
4. 음향특성행렬의 분석
5. 결론
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UCI(KEPA) : I410-ECN-0101-2013-556-001413061