WFBTBOUNDS - Frame bounds of WFBT

Usage

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

Description

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

wfbtbounds({w,J,'dwt'},L) calculates the ratio \(B/A\) of the frame bounds of the DWT (fwt) filterbank specified by w and J for a system of length L.

wfbtbounds(wt) does the same thing, but L is assumed to be the next compatible length bigger than the longest filter in the identical filterbank.

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

See wfbt for explanation of parameter wt and fwt for explanation of parameters w and J.

The function supports the following flag groups:

'scaling_notset'`(default),'noscale','scale','sqrt'`

Support for scaling flags as described in uwfbt. By default, the bounds are computed for wfbt, passing any of the non-default flags results in framebounds for uwfbt.