Method and filter arrangement for digital recursive...

Details Method and filter arrangement for digital recursive... Method and filter arrangement for digital recursive...

2007-10-30

2007-10-30

Malzahn, D. H. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

10714811

ABSTRACT:
A method and apparatus for fast digital filtering that requires only filter stages of first and second order. A desired rational filter transfer function is represented as a sum of first and second order intermediate transfer functions. A time dependent input signal is first fed in parallel into a plurality of first and second order intermediate recursive filter stages. Then, the outputs of the intermediate filter stages are summed up to an output filter signal that corresponds to the desired rational filter transfer function. The method and apparatus reduces the amount of calculational effort to the order of O(N), where N denotes the number of sampling points in the time domain, because the digital filtering is based on a discrete recursive convolution in the time domain.

REFERENCES:
patent: 5089981 (1992-02-01), Cabot
patent: 5432723 (1995-07-01), Chen et al.
patent: 5523962 (1996-06-01), Yoshino et al.
patent: 5808924 (1998-09-01), White
patent: 6263354 (2001-07-01), Gandhi
patent: 7096244 (2006-08-01), Yamamoto
Fam et al., “Low Roundoff Noise Augmented IIR Filters Based on Normal Realization”, IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, New York, US, vol. 8, No. 8, Aug. 1992, pp. 540-548, (9 pages).
Proakis et al., “Digital Signal Processing: Principles, Algorithms, and Applications”, Third Edition, Prentice Hall, 1996, pp. 519-539, (21 pages).
Price et al. “Accurate Parallel Form Filter Synthesis”, Electronics Letters, vol. 32, No. 22, Oct. 1996, pp. 2066-2067, (2 pages).

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