Fons Adriaensen wrote:
> 2. the sum of the filter outputs equals the original input.
>
> This is a *hard* problem. Basically none of the classical filter
> types have these properties. There are filter sets that can do
> this but they are quite esoteric.
Linkwitz-Riley filters:
http://en.wikipedia.org/wiki/Linkwitz-Riley_filter
I'm pretty sure they can just be converted to the digital domain
using the bilinear transform.
> I'd have a look at wavelet filters for example.
Do look at the discrete time version of the continuous wavelet
transform, but from my experience, the discrete dyadic wavelet
transform is a complete waste of time for anything other that
sub-band coding applications.
Also, is this a bit more appropriate for the LAD list?
Erik
--
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Erik de Castro Lopo
http://www.mega-nerd.com/
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