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Topic: FIR filter warning
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Magdalena Rós

Posts: 1
Registered: 7/15/13
FIR filter warning
Posted: Jul 15, 2013 6:24 AM
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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.


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