Approximation sequence processing

Details Approximation sequence processing Approximation sequence processing

2005-01-25

2005-01-25

Raymond, Edward (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Measured signal processing

C381S071100

Reexamination Certificate

active

06847920

ABSTRACT:
A method of producing an approximation sequence to a series of sample values, the method comprising the steps of (a) determining a first set having candidate partial sequences as members, each member comprising a plurality of elements; (b) selecting the first n elements of one of the members of the first set as a next output element for said approximation sequence; n a positive integer; (c) forming a second set having descendent candidate partial sequences as members from said first set; (d) applying a fitness filtering process to said second set to rank its members according to fitness for representing at least a corresponding portion of the series of input samples; (e) selecting at least some of the members of the second set to form a third set; and repeating steps (a) to (e) so as to produce said approximation sequence, wherein the third set of step (e) functions as the first set of the subsequent step (a).

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H. Kato. “Trellis Noise-Shaping Converters and 1-bit digital audio.” Presented at the 112thConvention of the Audio Engineering Society, May 10-13, 2002. Munich, Germany. http://www.aes-singapore.org/SDM%20paper.pdf.

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