In a FIR filter the scaling of the input in order to avoid overflow at the output can be specified by using the 1st norm of the vector of coefficients. ymax=xmax*scaling*norm_1 for xmax=ymax=1 scaling=1/norm_1 How to use this relation in a multistage interpolator with polyphase decomposition? Thanks
Scaling of fir polyphase filters
Started by ●June 26, 2008
Reply by ●June 26, 20082008-06-26
On Jun 26, 7:19 am, "mitrobge" <dimitris.mitrovge...@gmail.com> wrote:> In a FIR filter the scaling of the input in order to avoid overflow at the > output can be specified by using the 1st norm of the vector of > coefficients.> How to use this relation in a multistage interpolator with polyphase > decomposition?Think through the operation in the context of the conditions would create the largest values, either at the output or at some intermediate point.