Filter-coefficient conversion system

Details Filter-coefficient conversion system Filter-coefficient conversion system

1993-08-13

1995-05-16

Sykes, Angela D.

Surgery

Truss

Pad

36441305, A61B 5048

Patent

active

054151740

ABSTRACT:
A filter-coefficient conversion system relating to n pieces of digital filters for obtaining n pieces of frequency components in a desired frequency band using filter coefficients a(i, j) (where i=0, - - - m.sub.j, j=1, - - - n) described in a given filter-bank table, comprising a first transfer-function processing device for obtaining transfer functions H(a(i, j)) for the filter coefficients a(i, j) corresponding to each filter (j) in a desired frequency band, a variable-range generating device for generating gradually value-changing ranges RANGE (m), a second transfer-function processing device for obtaining new converted filter coefficients A (i, j) having rounded integer values based on the filter coefficients a (i, j) in the filter-bank table, preparing a filter-bank table thereof, and obtaining transfer functions H(A (i. j)) for the converted filter coefficients A (i, j), and an evaluating device for carrying out evaluation processing with respect to a given degree of tolerance.

REFERENCES:
patent: 3826243 (1974-07-01), Anderson
patent: 4800895 (1989-01-01), Moberg et al.
patent: 4869264 (1989-09-01), Silberstein

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