Cache-Efficient Implementation of FIR Filters using the Blackfin Microcomputer

The paper presents a cache efficient scheme for very long length finite impulse response (FIR), namely extreme filter, using the analog devices Blackfin microcomputer and investigates the maximum filter length which allows a real time implementation with the assumptions that a switching buffer technique is involved. Using this efficient cache scheme the FIR length may be increased up to tens hundreds and the implementation remains still a real time one.