WAVELET TRANSFORMS - AN INTRODUCTION

Wavelets and wavelet transforms are a relatively new topic in signal p rocessing. Their development and, in particular, their application rem ains an active area of research. This paper presents a tutorial introd uction to the theory, implementation and interpretation of the wavelet transform. The paper concentrates on the application of the wavelet t ransform to the time-scale (time-frequency) analysis of discrete signa ls. Examples are given of the analysis of basic test signals and of an actual electrocardiographic signal.