Authors: Despotović, Vladimir
Perić, Zoran
Velimirović, Lazar 
Affiliations: Mathematical Institute of the Serbian Academy of Sciences and Arts 
Title: Adaptive Quantizer based on Optimal Companding and Correlation
Journal: 54th Conference for electronics, telecommunications, computers, automation, and nuclear engineering – ETRAN - Proceedings
First page: 1
Last page: 4
Conference: 54th Conference for electronics, telecommunications, computers, automation, and nuclear engineering – ETRAN, Donji Milanovac, Serbia, June 7-11, 2010
Issue Date: 2010
Rank: M33
Abstract: 
In this article a novel adaptive quantizer is presented based on optimal companding technique and correlation. Adaptation is achieved by adapting the input of the fixed or non-adaptive quantizer according to the estimated and quantized gain on each particular frame. In such a way better quantizer adaptation to the varying input statistics is provided. The speech signal is modeled by Laplacian probability density function. Theoretical and experimental results are provided which point out the benefits that can be achieved using the proposed algorithm. The main advantage is a compromise between signal to quantization noise ratio and bit-rate.
Keywords: Adaptive quantizer | Optimal companding technique | SQNR
Publisher: Društvo za Elektroniku, Telekomunikacije, Računarstvo, Automatiku i Nuklearnu Tehniku

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