Boots – shoes – and leggings
Patent
1995-12-05
1998-08-04
Malzahn, David H.
Boots, shoes, and leggings
G06F 1710
Patent
active
057904405
ABSTRACT:
An apparatus for estimating filter coefficients operates in a system which includes a filter simulating characteristics of an unknown signal transmission system based on a signal provided to the unknown signal transmission system and a response signal produced from the unknown signal transmission system. The apparatus includes an accumulation calculating section for accumulating a product of the signal provided to the unknown signal transmission system and a difference between the response signal from the unknown signal transmission system and an output signal of the filter for a given time period. The apparatus further includes a square-sum calculating section for accumulating a square of the signal provided to the unknown signal transmission system for the given time period. The apparatus also includes an adjusting-amounts simulating section for simulating coefficient adjusting amounts of the filter based on a ratio of an output of the accumulation calculating section to an output of the square-sum calculating section. In the apparatus, coefficients of the filter are adjusted by using the coefficient adjusting amounts simulated in the adjusting-amounts simulating section.
REFERENCES:
patent: 5278780 (1994-01-01), Eguchi
patent: 5329472 (1994-07-01), Sugiyama
patent: 5475632 (1995-12-01), Sugiyama
patent: 5553014 (1996-09-01), DeLeon, II et al.
patent: 5563817 (1996-10-01), Ziegler, Jr. et al.
patent: 5608804 (1997-03-01), Hirano
patent: 5638311 (1997-06-01), Fujii et al.
Scott C. Dauglas, "A Family of Normalized LMS Algorithms," IEEE Signal Processing Letter, vol. 1, No. 3, pp. 49-51, Mar. 1994.
K Fujii et al., "A Study of the Availability of a `Polarized-x` Algorithm," (in Japanese) Technical Report of IEICE, DSP95-27, pp. 31-38, May 1995.
K Fujii et al., "Individually Normalized' LMS Algorithm Suitable for Fixed Point Processing and Its Application to Active Noise Control," (in Japanese) Trans. IEICE, vol. J78-A No. 6, pp. 669-677, Jun. 1995.
K Fujii et al., A New Version of the NLMS Algorithm Suitable for Fixed Point Proceedings of the 4th International Workshop on Acoustic Echo and Noise Control, 21-23 Jun. 1995, Roros, Norway, pp. 75-78.
Fujii Kensaku
Ohga Juro
Fujitsu Limited
Malzahn David H.
LandOfFree
Apparatus for estimating filter coefficients does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for estimating filter coefficients, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for estimating filter coefficients will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1185152