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Title: Multichannel signal enhancement

Abstract

A mixed adaptive filter is formulated for the signal processing problem where desired a priori signal information is not available. The formulation generates a least squares problem which enables the filter output to be calculated directly from an input data matrix. In one embodiment, a folded processor array enables bidirectional data flow to solve the recursive problem by back substitution without global communications. In another embodiment, a balanced processor array solves the recursive problem by forward elimination through the array. In a particular application to magnetoencephalography, the mixed adaptive filter enables an evoked response to an auditory stimulus to be identified from only a single trial.

Inventors:
 [1]
  1. (Los Alamos, NM)
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
867483
Patent Number(s):
4947480
Assignee:
United States of America as represented by United States (Washington, DC) LANL
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
multichannel; signal; enhancement; mixed; adaptive; filter; formulated; processing; desired; priori; information; available; formulation; generates; squares; enables; output; calculated; directly; input; data; matrix; embodiment; folded; processor; array; bidirectional; flow; solve; recursive; substitution; global; communications; balanced; solves; forward; elimination; particular; application; magnetoencephalography; evoked; response; auditory; stimulus; identified; single; trial; signal processing; particular application; data flow; input data; channel signal; signal process; filter output; evoked response; bidirectional data; /702/708/

Citation Formats

Lewis, Paul S. Multichannel signal enhancement. United States: N. p., 1990. Web.
Lewis, Paul S. Multichannel signal enhancement. United States.
Lewis, Paul S. Mon . "Multichannel signal enhancement". United States. https://www.osti.gov/servlets/purl/867483.
@article{osti_867483,
title = {Multichannel signal enhancement},
author = {Lewis, Paul S.},
abstractNote = {A mixed adaptive filter is formulated for the signal processing problem where desired a priori signal information is not available. The formulation generates a least squares problem which enables the filter output to be calculated directly from an input data matrix. In one embodiment, a folded processor array enables bidirectional data flow to solve the recursive problem by back substitution without global communications. In another embodiment, a balanced processor array solves the recursive problem by forward elimination through the array. In a particular application to magnetoencephalography, the mixed adaptive filter enables an evoked response to an auditory stimulus to be identified from only a single trial.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

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