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WPFBTBOUNDS - Frame bounds of WPFBT

Usage

fcond=wpfbtbounds(wt,L);
[A,B]=wpfbtbounds(wt,L);
[...]=wpfbtbounds(wt);

Description

wpfbtbounds(wt,L) calculates the ratio \(B/A\) of the frame bounds of the wavelet packet filterbank specified by wt for a system of length L. The ratio is a measure of the stability of the system.

wpfbtbounds(wt) does the same, except L is chosen to be the next compatible length bigger than the longest filter from the identical filterbank.

[A,B]=wpfbtbounds(...) returns the lower and upper frame bounds explicitly.

See wfbt for explanation of parameter wt.

Additionally, the function accepts the following flags:

'intsqrt'`(default),'intnoscale', `'intscale'
The filters in the filterbank tree are scaled to reflect the behavior of wpfbt and iwpfbt with the same flags.
'scaling_notset'`(default),'noscale','scale','sqrt'`
Support for scaling flags as described in uwpfbt. By default, the bounds are caltulated for wpfbt, passing any of the non-default flags results in bounds for uwpfbt.