Design of Piecewise Uniform Scalar Quantizer with Geometric Progression of Segment Width

In this paper, the design procedure of the piecewise uniform scalar quantizer having segments with widths that form a geometric progression is presented. The proposed quantizer design optimization for the Laplacian source of the unit variance is performed by optimizing the distortion in respect to t...

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Bibliographic Details
Published in:Advances in electrical and computer engineering 2011-11, Vol.11 (4), p.37-40
Main Authors: PERIC, Z., NIKOLIC, J.
Format: Article
Language:English
Subjects:
digital signal processing
quantization
signal to quantization noise ratio
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Summary:In this paper, the design procedure of the piecewise uniform scalar quantizer having segments with widths that form a geometric progression is presented. The proposed quantizer design optimization for the Laplacian source of the unit variance is performed by optimizing the distortion in respect to the support region threshold and the scaling factor which defines the geometric progression of the consecutive segment widths. For the proposed quantizer model and its forward adaptive version, the signal to quantization noise ratio robustness analysis in a wide variance range is also presented in the paper. Regarding the performance comparision of the proposed quantizer, the uniform quantizer and the G.711 quantizer, the conclusion of the proposed quantizer significance is distinctly shown in the paper.
ISSN:1582-7445
1844-7600
DOI:10.4316/AECE.2011.04006