Define the type of wavelet used for all wavelet operations
"Define wavelet" allows the user to specify the type and the order of wavelets
used for any of the wavelet operations.
The parameters of "Define wavelet" are
- Wavelet type:
- "Daubechies" (0)
With this flag set, the filters belonging to the
Daubechies wavelet with maximum number of vanishing moments
and minimum phase are computed.
- "Spline" (1)
With this flag set, the analysis and synthesis filters
of a biorthogonal spline wavelet are computed.
- Number nzlp of zeros at z=-1 in the z-plane for the lowpass analysis filter
- Number nzhp of zeros at z=-1 in the z-plane for the highpass analysis and
lowpass synthesis filter (for spline wavelets only, ignored in case of Daubechies type)
Note: For spline wavelets the total no. of zeros (nzlp + nzhp)
must be even, otherwise the wavelet filters cannot be computed and an error message is displayed.