Browse > Article
http://dx.doi.org/10.5050/KSNVE.2011.21.11.1074

Experimental Analysis on Barrel Zoom Module of Digital Camera for Noise Source Identification and Noise Reduction  

Kwak, Hyung-Taek (한양대학교 기계공학과)
Jeong, Jae-Eun (한양대학교 기계공학과)
Jeong, Un-Chang (한양대학교 기계공학과)
Lee, You-Yub (호원대학교 자동차기계공학부)
Oh, Jae-Eung (한양대학교 기계공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.21, no.11, 2011 , pp. 1074-1083 More about this Journal
Abstract
Noise of digital camera has been noticeable to its users. Particularly, noise of a barrel assembly module in zoom in/zoom out operation is recorded while taking a video. Reduction of barrel noise becomes crucial but there are not many studies on noise of digital camera due to its short history of use. In this study, experiment-based analyses are implemented to identify sources of noise and vibration because of complexity and compactness of the barrel system. Output noise is acquired in various operation conditions using synchronization for spectral analysis. Noise sources of a barrel assembly in zoom operating are first identified by the comparison with gear frequency analysis and then correlation analysis between noise and vibration is applied to confirm the generation path of noise. Analysis on noise transfer characteristic of zoom module is also carried out in order to identify the most contributing components. One of possible countermeasures of noise in zoom operating is investigated by an experimental approach.
Keywords
Digital Camera Barrel; Zoom Module; Noise Source Identification; Spectral Analysis; Ordinary Coherence Function;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Bendat, J. S. and Piersol, A. G., 1986, Random Data : Analysis and Measurement Procedures, Wiley-Interscience, 2nd ed.
2 Kim, H. S., Park, S. G., Kang, K. H., Lee, J. Y. and Oh, J. E., 2007, The Analysis of Noise Contribution about Drum Washer under Dehydrating Condition Using Multi-dimensional Spectral Analysis, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 17, No. 11, pp. 1056- 1063.   과학기술학회마을   DOI
3 Jeong, J. E., Lee, J. H., Chung, C. O., Hwang, G. B. and Oh, J. E., 2010, Transfer Path Analysis of Output Noise Using Multi-dimensional Spectral Analysis Method for Vacuum Cleaner, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 20, No. 10, pp. 940-945.   과학기술학회마을   DOI
4 Yang, I. H., Jeong, J. E., Kwak, H. T. and Oh, J. E., 2011, Noise Reduction of PDP TV Using Multi-dimensional Spectral Analysis Method, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 21, No. 1, pp. 81-88.   과학기술학회마을   DOI
5 Dudley, D. W., 1992, Dudley's Gear Handbook, McGraw-Hill, Inc.
6 Smith, J. D., 1999, Gear Noise and Vibration, Marcel Dekkers, Inc.
7 Raclot, J. P. and Velex, P., 1999, Simulation of the Dynamic Behaviour of Single and Multi-stage Geared Systems with Shape Deviations and Mounting Errors by Using a Spectral Method, Journal of Sound and Vibration, Vol. 220, No. 5, pp. 861-903   DOI
8 Bendat, J. S. and Piersol, A. G., 1993, Engineering Application of Correlation and Spectral Analysis, John Wiley & Sons, Inc, 2nd ed.