rwt (version 1.0.0)

daubcqf: Daubechies Filter Creation

Description

Computes the Daubechies' scaling and wavelet filters (normalized to $sqrt(2)$).

Usage

daubcqf(N, type = PHASE.MINIMUM)

Arguments

N

numeric scalar specifying length of filter (must be even)

type

Distinguishes the minimum phase, maximum phase and mid-phase solutions. Valid values are: l{ PHASE.MINIMUM PHASE.MID PHASE.MAXIMUM }

Value

• Returns a list with components:
• h.0
  minimal phase Daubechies' scaling filter
• h.1
  minimal phase Daubechies' wavelet filter

References

Orthonormal Bases of Compactly Supported Wavelets CPAM (Oct.89)

Examples

h <- daubcqf(6)