Elsevier

Digital Signal Processing

Volume 22, Issue 1, January 2012, Pages 199-209
Digital Signal Processing

An adaptive waveform coding algorithm and its application in speech coding

https://doi.org/10.1016/j.dsp.2011.09.001Get rights and content

Abstract

This paper proposes a novel waveform coding algorithm based on the forward adaptive technique with the goal to provide the overreaching of the signal to quantization noise ratio achievable by the coding solution designed according to G.711 standard. The novel algorithm performs frame-by-frame analysis of the input signal, according to which one of the two compandors, the restricted or the unrestricted one, is selected for the particular frame procession. The basic concept of the proposed algorithm is to enable a more preferable selection of the restricted compandor than the unrestricted one, since, in such a manner, an increase of the signal to quantization noise ratio can be provided. Since both the theoretical and the simulation results, which are obtained for the assumed input speech signal, indicate the performance improvement over the G.711 standard along with approximately 1 bit/sample compression, one can expect that the proposed algorithm will be effective in coding of signals, that as well as speech signals follow Laplacian distribution and have the time varying characteristics.

Section snippets

Zoran H. Perić was born in Niš, Serbia, in 1964. He received the B.S. degree from the Faculty of Electronic Engineering, Niš, Serbia, in 1989, and M.S. degree from the University of Niš, in 1994. He received the Ph.D. degree from the University of Niš, in 1999. He is currently a full Professor at the Department of Telecommunications and vicedean of the Faculty of Electronic Engineering, University of Niš, Serbia. His current research interests include the information theory, source and channel

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Cited by (26)

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Zoran H. Perić was born in Niš, Serbia, in 1964. He received the B.S. degree from the Faculty of Electronic Engineering, Niš, Serbia, in 1989, and M.S. degree from the University of Niš, in 1994. He received the Ph.D. degree from the University of Niš, in 1999. He is currently a full Professor at the Department of Telecommunications and vicedean of the Faculty of Electronic Engineering, University of Niš, Serbia. His current research interests include the information theory, source and channel coding and signal processing. He is particularly working on scalar and vector quantization techniques in speech and image coding. He is author and coauthor in over 160 papers in digital communications. Dr. Perić has been a Reviewer for IEEE Transactions on Information Theory, Informatica and The International Journal for Computation and Mathematics in Electrical Engineering (COMPEL). He is member of the Editorial Board of the Journal “Electronics and Electrical Engineering”. He is Editor-in-Chief of the Journal “Facta Universitatis Series: Electronics and Energetics”.

Jelena R. Nikolić was born in Prokuplje, Serbia, in 1978. She received the B.S. and M.S. degrees from the Faculty of Electronic Engineering, Niš, Serbia, in 2003 and 2006, respectively. She received the Ph.D. degree from the University of Niš in 2011. She is currently a teaching assistant at the Faculty of Electronic Engineering at the Department of Telecommunications. Her current research interests include the information theory, source and channel coding and signal processing. She has published over 50 papers on the above subjects.

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