Title :
Digital filtering using logarithmic arithmetic
Author :
Kingsbury, N.G. ; Rayner, P.J.W.
Author_Institution :
University of Cambridge, Engineering Department, Cambridge, UK
Abstract :
A method of computation is described in which all signals are encoded logarithmically, giving a great improvement in dynamic range compared with fixed-point linearly encoded arithmetic. Two ways of adding or subtracting logarithmically encoded numbers are suggested, together with a logarithmic digital-analogue convertor.
Keywords :
filtering and prediction theory; addition; digital filtering; logarithmic arithmetic; logarithmic digital analogue convertor; subtraction;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19710039
