FILTERING DEVICE WITH A HIERARCHICAL STRUCTURE, AND RECONFIGURABLE FILTERING DEVICE

摘要

The invention relates to a filtering device with a DFSH hierarchical structure for carrying out linear filtering functions with finite impulse response (FIR) and with infinite impulse response (IIR), which can be combined with one or more devices of the same type, wherein said device includes at least first (1) and second (2) filtering modules (MF) including a means for carrying out filtering functions with N configurable coefficients. A first subset of the N coefficients of an MF module is configured so as to carry out non-recursive filtering functions, and a second subset of said coefficients can be configured so as to carry out recursive filtering functions, wherein one or more counter-reaction loops can be activated per MF module, at least one sample of the filtering result being generated at each clock cycle. The invention also relates to a DFR reconfigurable filtering device using at least two filtering devices with a DFSH hierarchical structure (51, 52).