[LAU] [Sort of OT] Ringing in filters

[Fons Adriaensen]

On Tue, May 11, 2010 at 02:43:43PM -0700, Mark Knecht wrote:

>    This is not specifically about LAU stuff, at the first level
> anyway, but it could be one of these days maybe.
> 
>    Mostly for fun and to keep my old brain exercised I'm playing with
> coding a DSP multiband equalizer. The thing basically works, actually
> works pretty well with more or less steady state data, but it doesn't
> look at all good with big transients mostly due to ringing in my lower
> range band pass filters.
> 
>    Does anyone know of any reasonably simple papers talking about
> sorting out this sort of design problem?
> 
>    I suspect someone like Steve Harris has forgotten more than I'll
> ever know about subject like this but I'm not sure he's here anymore.
> Maybe there's someone else who's available to talk to me off list?

What type of filter are you using and with which parameters ?
Ringing is a natural effect with some filters, it depends mainly
on how 'steep' a filter is. How it looks is not that important,
what matters is how it sounds. 

Ciao,

-- 
FA

O tu, che porte, correndo si ?
E guerra e morte !