Re: Using butterworth filter

[Sergei Steshenko]

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> Sent: Saturday, December 15, 2012 12:45 PM
> Subject: Re: Using butterworth filter
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> Regards...
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"Characteristics of the Phase": http://www.dspguide.com/ch10/2.htm -> 
http://www.dspguide.com/graphics/F_10_6.gif .

_Always_ remember this while considering a filter.

Regards,
  Sergei.