Filtering a signal with the use of approximate arithmetical divi

Details Filtering a signal with the use of approximate arithmetical divi Filtering a signal with the use of approximate arithmetical divi

1993-11-02

1994-06-28

Mai, Tan V.

Boots, shoes, and leggings

364764, G06F 1531, G06F 752

Patent

active

053253191

ABSTRACT:
Filtering a signal with an adaptive digital filter includes updating the filter by performing an approximate division of a constant number by a variable number in binary form. The variable number represents a magnitude of energy of the signal to be filtered, and consists of a character bit and a plurality of bits which define the absolute value of the number. The variable number is first transformed by substituting with logic zeros any logic ones that have a lower significance than the most significant logic one of the bits. The first transformed number is then further transformed by reading the character bit of the variable number as a character bit and by reading the bits in the digital word in a reversed order. The resulting value is applied to adjust the adaptive digital filter which filters the signal.

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Principles of Digital Computer Design, vol. 1, Abd-alla, Metzer, N.J., 1976 av Prentice Hall, pp. 65-67; 3.4.4 "High Speed Division Techniques".

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