Hi,


I have a problem, I have a oversampled (OSR =16) Digital Signal, prior
to downsampling a filter is used, a 16 Tap BandpassFIR filter wich
also have a Window.

1. Is there a document or approch how to calculate mathematically the
resolution / Accuracy after the Filter, the Window and after the
Decimation. (Filterquantisation ?) What errrors come from the Window
??

What role does the Window play (The FIR BAndpass is used to fit the
signals frequncy to allow downsampling I suppose) But for what use a
window ?


I would be happy about some help !
Thaks Sascha