Boots – shoes – and leggings
Patent
1994-03-11
1996-05-14
Malzahn, David H.
Boots, shoes, and leggings
370 321, G06F 1710
Patent
active
055174353
ABSTRACT:
A method and apparatus for identifying an unknown system to provide less computation and a shorter convergence time by controlling the number of taps of adaptive filters corresponding to each subband. The apparatus includes devices for, and the method includes steps of, splitting an input signal to an unknown system and generating a plurality of subband signals, splitting an output signal from the unknown system and generating a plurality of subband reference signals, filtering the subband signals with a plurality of adaptive filters and generating a plurality of replica signals corresponding to the subband reference signals, generating a plurality of subband error signals based on differences between the subband reference signals and the replica signals, updating coefficient values of the adaptive filter using the subband error signals, and adaptively controlling the number of taps of the adaptive filters using data on the adaptive filters.
REFERENCES:
patent: 5001701 (1991-03-01), Gay
patent: 5136577 (1992-08-01), Amano et al.
patent: 5245561 (1993-09-01), Sugiyama
patent: 5272695 (1993-12-01), Makino et al.
patent: 5329472 (1994-07-01), Sugiyama
patent: 5329587 (1994-07-01), Morgan et al.
Malzahn David H.
NEC Corporation
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