The orthogonal wavelet transform separate a signal
into low frequency component and high frequency component. The first is
called smooth coefficients, the second part is called wavelet coefficients.
The smooth coefficients is separated into two parts again and again. If
the wavelet coefficients is also done like this, we called it the wavelet
Algorithm of wavelet packet
Raw signal and wavelet packet coefficients
¡£ To help users to understand basic concepts of wavelet packet, we
design a Java program to show the procedure of wavelet packet transform.
here, it is a part of the web course "Wavelet Tutorial" )