High resolution filtering using low resolution processors

Details High resolution filtering using low resolution processors High resolution filtering using low resolution processors

1993-04-28

1994-06-07

Malzahn, David H.

Boots, shoes, and leggings

G06F 1531

Patent

active

053195850

ABSTRACT:
A high-speed digital filter with a large dynamic range is constructed by operating two low-resolution filters in parallel, which is referred to as an "overlap" mode of operation. In this overlap mode of operation, both low-resolution adaptive filters operate on the input data simultaneously, however, the characteristics of both filters are controlled so that one filter performs a coarse level of filtering, while the other filter performs a finer level of filtering and also removes any errors introduced by the first filter. Some application examples include echo canceling, equalization, and deghosting filters.

REFERENCES:
patent: 4792915 (1988-12-01), Adams et al.
patent: 4811360 (1989-03-01), Potter
patent: 4856031 (1989-08-01), Goldstein
patent: 4922530 (1990-05-01), Kenney et al.
patent: 5005185 (1991-04-01), Mizoguchi et al.
patent: 5007007 (1991-04-01), Zanten et al.
patent: 5014232 (1991-05-01), Andre

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