question for measuring roll-off (aronoff )

Subject: question for measuring roll-off
From:    aronoff  <aronoff@xxxxxxxx>
Date:    Wed, 22 Feb 2006 19:00:03 -0800

Dear List,

I am trying to measure the roll-off (in dB/octave) for a bandstop.  It
appears that the roll-off is symmetrical in terms of Hz (and thus
asymmetrical in terms of octaves) and I was wondering if the convention is
to report the roll-off above the bandstop, below it, or some average of
the two.

Regards,
Justin Aronoff