Finite impulse response filter

Details Finite impulse response filter Finite impulse response filter

1995-01-23

1996-03-19

Mai, Tan V.

Boots, shoes, and leggings

364754, G06F 1531, G06F 738

Patent

active

055008119

ABSTRACT:
A compact Finite Impulse Response (FIR) filter using one or both of a compact address sequencer and a compact multiplier/accumulator. The address sequencer exploits certain symmetry properties existing between different phases of a polyphase FIR filter in order to reduce coefficient storage and simplify address sequencing. The multiplier/accumulator is capable of performing two multiply/accumulate operations per clock cycle, avoiding in certain instances the need to add a second multiplier/accumulator. The area required to realize a FIR filter for performing real-time filter is therefore reduced.

REFERENCES:
patent: 3926367 (1975-12-01), Bond et al.
patent: 4747067 (1988-05-01), Jagodnik, Jr. et al.
patent: 5297069 (1994-03-01), Asato et al.
Mactaggart, I. R., et al., "Radix-2 FFT Butterfly Processor Using Distributed Arithmetic", Electronic Letters, vol. 19, No. 2 (1983).

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