FWT_PO {rwavelet}

Forward Wavelet Transform (periodized, orthogonal)

Description

1. qmf filter may be obtained from MakeONFilter. 2. usually, length(qmf) < 2^(L+1). 3. To reconstruct use IWT_PO.

Usage

FWT_PO(x, L, qmf)

Arguments

x

1-d signal; length(x) = 2^J.

L

Coarsest Level of V_0; L << J.

qmf

quadrature mirror filter (orthonormal).

Value

wc 1-d wavelet transform of x.

See Also

IWT_PO, MakeONFilter.

Examples

x <- MakeSignal('Ramp', 8)
L <- 0
qmf <- MakeONFilter('Haar')
wc <- FWT_PO(x, L, qmf)