[Lo,Hi] = filters(fb)
returns the lowpass (scaling) and highpass (wavelet) filters,
Lo and Hi, respectively, for the
discrete wavelet transform (DWT) filter bank fb.
Lowpass (scaling) filters for the DWT filter bank, returned as an
L-by-2 matrix. L is an even
positive integer. The first column of Lo is the
analysis filter, and the second column is the synthesis filter.
For orthogonal wavelets, the lowpass synthesis and lowpass analysis
filters are time-reversed versions of each other.
Hi — Highpass (wavelet) filters real-valued matrix
Highpass (wavelet) filters for the DWT filter bank, returned as an
L-by-2 matrix. L is an even
positive integer. The first column of Hi is the
analysis filter, and the second column is the synthesis filter.
For orthogonal wavelets, the highpass synthesis and highpass analysis
filters are time-reversed versions of each other.
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