Computes the quadrature mirror filter from a given filter.

Basic wavelet routines for time series (1D), image (2D) and array
(3D) analysis.  The code provided here is based on wavelet methodology
developed in Percival and Walden (2000); Gencay, Selcuk and Whitcher (2001);
the dual-tree complex wavelet transform (DTCWT) from Kingsbury (1999, 2001) as
implemented by Selesnick; and Hilbert wavelet pairs (Selesnick 2001, 2002).
All figures in chapters 4-7 of GSW (2001) are reproducible using this package
and R code available at the book website(s) below.

Brandon Whitcher

waveslim

Basic Wavelet Routines for One-, Two-, and Three-Dimensional
Signal Processing

qmf function

<dl><dt>g</dt>
<dd>Filter coefficients.</dd>
<dt>low2high</dt>
<dd>Logical, default is <code>TRUE</code> which means a low-pass
filter is input and a high-pass filter is output. Setting <code>low2high=F</code>
performs the inverse.</dd></dl>

Arguments

Author

Quadrature Mirror Filter — qmf

<dl>

<dt>g</dt>
<dd>Filter coefficients.</dd>


<dt>low2high</dt>
<dd>Logical, default is <code>TRUE</code> which means a low-pass
filter is input and a high-pass filter is output. Setting <code>low2high=F</code>
performs the inverse.</dd>

</dl>

qmf: Quadrature Mirror Filter

Description

Usage

Value

Arguments

Author

Details

References

See Also

Examples