Switched Scalar Optimal u-law Quantization with Adaptation Performed to both the Variance and the Distribution of Speech Signal

Goran M. Petkovic, Zoran H. Peric, Leonid V. Stoimenov


This paper proposes a new model of switching scalar quantization that besides the usual adaptation to the variance uses a switching technique for adaptation to the distribution of the speech signal source. By applying the new model a smaller quantization errors achieved in comparison to the conventional models with a usual adaptation.

DOI: http://dx.doi.org/10.5755/j01.eee.22.1.14111


Signal processing algorithms; adaptive quantization; speech processing; signal to noise ratio

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