On Wed, May 12, 2010 at 09:46:03AM +1000, Erik de Castro Lopo wrote: > 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. L-R filters do *not* sum to the original signal. The amplitude response of the sum is flat, but the phase response is not linear. Ciao, -- FA O tu, che porte, correndo si ? E guerra e morte ! _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
