Proceedings of the Korea Institute of Convergence Signal Processing (융합신호처리학회 학술대회논문집)

The Korea Institute of Convergence Signal Processing (한국융합신호처리학회)
권호 표지

A Study on Wavelet Application for Signal Analysis

신호 해석을 위한 웨이브렛 응용에 관한 연구

  • Bae, Sang-Bum (Dept. of Control and Instrumentation Eng., Pukyong National Univ.) ;
  • Ryu, Ji-Goo (Dept. of Electronics Eng., Pukyong National Univ.) ;
  • Kim, Nam-Ho (Dept. of Control and Instrumentation Eng., Pukyong National Univ.)
  • 배상범 (부경대학교 공과대학 제어계측공학과) ;
  • 류지구 (부경대학교 공과대학 전자공학과) ;
  • 김남호 (부경대학교 공과대학 제어계측공학과)
  • Published : 2005.11.19
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Abstract

Recently, many methods to analyze signal have been proposed and representative methods are the Fourier transform and wavelet transform. In these methods, the Fourier transform represents signal with combination cosine and sine at all locations in the frequency domain. However, it doesn't provide time information that particular frequency occurs in signal and denpends on only the global feature of the signal. So, to improve these points the wavelet transform which is capable of multiresolution analysis has been applied to many fields such as speech processing, image processing and computer vision. And the wavelet transform, which uses changing window according to scale parameter, presents time-frequency localization. In this paper, we proposed a new approach using a wavelet of cosine and sine type and analyzed features of signal in a limited point of frequency-time plane.

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