Support Region Determination of the Quasilogarithmic Quantizer for LAPLACIAN source

摘要

This paper proposes the method for the support region determination of the quasilogahthmic quantizer designed for the Laplacian source and an arbitrary variance. The method is based on the minimal distortion criteria and it implies some approximations yielding the asymptotic formula for the optimal support region threshold of the quasilogarithmic quantizer. This formula shows which parameters influence the support region threshold of the quasilogarithmic quantizer which is of great importance for practical implementation of the considered quantizer in the high-quality quantization of signals, which, as well as speech signals, have statistics modeled by the Laplacian probability density function.%W artykule zaproponowano metodę określania region pomocniczego (support region) w quasi logarytmicznym kwantyzerze zaprojektowanym do źródeł typu Laplasian o dowolnej wariancji. Kwantyzer może być zastosowany między innymi do kodowania mowy w systemach komunikacyjnych.