System for adjusting size and scale of digital filters and creat

Details System for adjusting size and scale of digital filters and creat System for adjusting size and scale of digital filters and creat

1998-06-11

2000-12-26

Malzahn, David H.

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

G06F 1710

Patent

active

061674141

ABSTRACT:
The invention provides a technique of scaling a digital filter and of adjusting the width of a digital filter. The technique involves truncating a filter, attenuating its new endpoints and then adjusting the truncated filter by mixing in linear combinations of a set of basis vectors in a way which preserves the linearly defined properties of the original filter. A filter can also be created by defining a spectrum of the filter using a large number of points, performing a Fourier transform on the filter spectrum creating a spatial filter, and reducing a size of the spatial filter by truncating the spatial filter producing a truncated filter and combining the truncated filter with a set of basis vectors.

REFERENCES:
patent: 5351205 (1994-09-01), Hoos
patent: 5355328 (1994-10-01), Arbeiter et al.
patent: 5483474 (1996-01-01), Arbeiter et al.
patent: 5579243 (1996-11-01), Levine
patent: 5995989 (1999-11-01), Gedcke et al.

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