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.