First order digital filter with controlled boost/truncate quanti

Details First order digital filter with controlled boost/truncate quanti First order digital filter with controlled boost/truncate quanti

1986-04-28

1989-04-18

Malzahn, David H.

Boots, shoes, and leggings

G06F 1531

Patent

active

048232963

ABSTRACT:
A 1st-order digital filter network has a quantizer (Q) reducing the number of output bits following multiplication (in M3). The quantizer omits insignificant bits, adding one LSB (boosting) or not (truncating) in dependence on the value of the multiplier output (D).

REFERENCES:
patent: 4034196 (1977-07-01), Butterweck et al.
patent: 4213187 (1980-07-01), Lawrence et al.
patent: 4236224 (1980-11-01), Chang
H. J. Butterweck, "Suppression of Parasitic Oscillations in Second-Order Digital Filters by Means of a Controlled-Rounding Arithmetic", ARCHIV FUR ELEKTRONIK UND UBERTRAGUNGSTECHNIK (vol. 29, No. 9, pp. 371-374).
Bogner et al., Introduction to Digital Filtering, John Wiley & Sons, 1975, pp. 173-174, 364/745.

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