wpti(a,b,f) Returns the interval
wavelet packet transform of the array a
with respect to basis or level b
by the wavelet filter f.
iwpti(w,b,f) Returns the inverse
interval wavelet packet transform of the array w
with respect to basis b by the wavelet filter f.
Arguments:
a is an vector
or matrix. If a is a vector, the
length of a must be divisible
by 2level.
Additionally, length(a)/ 2level must
be greater than or equal to m.
If a is a matrix, the number of
rows and columns of a must both
be divisible by 2level. Additionally, rows(a)/
2level
and cols(a)/ 2level must be greater than or equal to m. For information on m,
see the description of f below.
b represents
a level or a packet basis. For wpti,
b is an integer or a 2- or 3-column
matrix representing a packet basis. For iwpti,
b must be a 2- or 3-column matrix
representing a packet basis.
f is a vector
resulting from daublet(m) (where
m is an even integer between
4 and 6, inclusive) or symmlet(m)
(where m is an even integer between
4 and 16, inclusive).