Digital filtering methods and devices

Details Digital filtering methods and devices Digital filtering methods and devices

2006-06-06

2006-06-06

Zhen, Wei Y. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07058676

ABSTRACT:
In order to transform an input digital signal (xn) into one or more output digital signals (yn) containing even-indexed samples (y2n) and odd-indexed samples (y2i+n), this filtering method includes at least one iteration which contains an operation of modifying even-indexed samples (y2n) by a function (R) of weighted odd-indexed samples (y2n+1), and an operation of modifying odd-indexed samples (y2n+1) by a function (R) of weighted even-indexed samples (β0,j(y2n−y2n+2)). The weighted samples are obtained by at least one weighting operation. At least one of the weighting operations is applied to the difference between two consecutive even-indexed samples.

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