I use the below matlab function to design the unquantised coefficient set:
and then i use the matlab finction "tf2sos" to convert the direct form coefficients to a set of a factorized second-order sections:
My result is:
The normalized version of the difference equation is:
How i can find the b and the c1,c2,...
Is the actual result in this form:
or factorized means normalized and the result is in this form:
The gain plays any special role?