Tutorial 21 wavelet transform: a mathematical tool for non-stationary signal processing in measurement science part 2 in a series of tutorials in instrumentation and measurement
Ruqiang Yan, Robert X. Gao · IEEE Instrumentation & Measurement Magazine · 2009
Signal transformation is a mathematical tool commonly applied in signal processing. It maps a mathematical function or a physical signal from one domain into another to reveal information embedded within the original function or signal that may not be obvious otherwise.