waveinfo provides information
on all wavelets within the toolbox.
waveinfo( provides information on the
wavelet family whose short name is specified by
Available family short names are listed in the table below.
Wavelet Family Short Name
Wavelet Family Name
Reverse biorthogonal wavelets
Discrete approximation of Meyer wavelet
Mexican hat wavelet (also known as Ricker wavelet)
Complex Gaussian wavelets
Frequency B-Spline wavelets
Complex Morlet wavelets
The family short names can also be user-defined ones (see
wavemngr for more information).
waveinfo('wsys') provides information on
waveinfo('db') DBINFO Information on Daubechies wavelets. Daubechies Wavelets General characteristics: Compactly supported wavelets with extremal phase and highest number of vanishing moments for a given support width. Associated scaling filters are minimum-phase filters. Family Daubechies Short name db Order N N strictly positive integer Examples db1 or haar, db4, db15 Orthogonal yes Biorthogonal yes Compact support yes DWT possible CWT possible Support width 2N-1 Filters length 2N Regularity about 0.2 N for large N Symmetry far from Number of vanishing moments for psi N Reference: I. Daubechies, Ten lectures on wavelets CBMS, SIAM, 61, 1994, 194-202.