Delay generation filter

Details Delay generation filter Delay generation filter

1997-10-20

1999-12-07

Ngo, Chuong Dinh

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

G06F 1710

Patent

active

059999551

ABSTRACT:
An N.sup.th order infinite impulse response digital filter for long-delay filtering of signals representing a digital input sequence. The N.sup.th order infinite impulse response digital filter is synthesized by cascading in series N first order infinite impulse response filter stages. A filter stage operable on a digital computer with floating point capability is provided and comprises a multiplier which multiplies an input signal with a weighting factor. A summing element provides an output for the filter stage by summing the weighted input signal with a weighted and delayed output signal. A filter operable on a digital computer with fixed point capability is provided and comprises a summing element which sums an input signal with the output of a first multiplier, and the delayed output of a mask element. The output of the summing element is coupled to the input of a second multiplier and to the input of the mask element. The second multiplier provides an output for the filter stage which is also used, in a delayed form as the input of the first multiplier.

REFERENCES:
patent: 4497035 (1985-01-01), Yabuuchi et al.
patent: 4866647 (1989-09-01), Farrow
patent: 5245127 (1993-09-01), Yamauchi et al.
patent: 5301135 (1994-04-01), Principe et al.
patent: 5349548 (1994-09-01), Nillesen

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