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Re: Using butterworth filter

From: Sergei Steshenko
Subject: Re: Using butterworth filter
Date: Sat, 15 Dec 2012 01:14:35 -0800 (PST)

----- Original Message -----
> From: StandardOctaveUser <address@hidden>
> To: address@hidden
> Cc: 
> Sent: Saturday, December 15, 2012 10:55 AM
> Subject: Re: Using butterworth filter
> Ie. butterworth is generally 
> preferred where pass and stop
> band quality is more important
> than transition sharpness. 
> --

Huh ?

Justify that Butterworth is better than, say, Bessel.
Or that it's better than Chebyshev.

Have you ever also considered _phase_ response ?

Do you at all understand when phase response is important ?

As I said, one needs to _exactly_ understand what the final "destination" of 
the signal is, i.e. for what it ultimately is supposed to be used, and based on 
that to select appropriate filter.


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