Boots – shoes – and leggings
Patent
1978-12-26
1980-11-25
Malzahn, David H.
Boots, shoes, and leggings
364745, G06F 1531
Patent
active
042362245
ABSTRACT:
An error feedback circuit is employed in a digital filter to significantly lower noise in the output by feeding back the least significant (roundoff) output bits of the quantizer rather than throwing these bits away as is done in the prior art. The feedback circuit for accomplishing this end result includes a digital delay circuit which receives the roundoff bits and delays these bits for a sampling sequence (Z.sup.-1) (as is also done for the rounded bits), a multiplier which multiplies the output of the delay circuit by a predetermined integer and an adder which subtracts the output of the multiplier from the delayed filtered digital output signal which has been multiplied by a predetermined constant.
REFERENCES:
patent: 3749895 (1973-07-01), Kao
patent: 3906199 (1975-09-01), Kieburtz et al.
patent: 3997770 (1976-12-01), Claasen et al.
patent: 4034196 (1977-07-01), Butterweck et al.
Parker et al. "Limit-Cycle Oscillations in Digital Filters", IEEE Trans. on Circuit Theory, vol. CT-18, No. 6, Nov. 1971, pp. 687-697.
Hamann H. Fredrick
Malzahn David H.
Pitts Rolf M.
Rockwell International Corporation
Sokolski Edward A.
LandOfFree
Low roundoff noise digital filter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low roundoff noise digital filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low roundoff noise digital filter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1133283