From: <HIDDEN>
Newsgroups: comp.soft-sys.matlab
Subject: FIR filter warning
Date: Mon, 15 Jul 2013 10:24:10 +0000 (UTC)
Organization: Kobenhavns Universitet
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Hi all,

I have designed a FIRpm filter to filter my gait data (3D accelerations) and now when I run the filter I get a warning saying:

"Warning: The first two inputs are interpreted as a transfer function. Normalize the
denominator coefficients (a01 must be equal to 1) if you meant to specify an SOS matrix. 
> In filtfilt>getCoeffsAndInitialConditions at 98
  In filtfilt at 67"

I am relatively new to matlab so I was hoping someone could tell me what this means.