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Scalar Compandor Design Based on Optimal Compressor Function Approximating by Spline Functions [article]

Zoran H. Peric, Lazar Velimirovic, Miomir Stankovic, Aleksandra Jovanovic, Dragan Antic
2013 arXiv   pre-print
On the basis of the comparison with the SQNR of the optimal compandor it can be noticed that the proposed companding quantizer based on approximate spline functions achieved SQNR arbitrary close to that  ...  In this paper the approximation of the optimal compressor function using the first-degree spline functions and quadratic spline functions is done.  ...  Acknowledgment This work is partially supported by Serbian Ministry of Education and Science through Mathematical Institute of Serbian Academy of Sciences and Arts (Project III44006) and by Serbian Ministry  ... 
arXiv:1311.1358v2 fatcat:euoyncso55hyhc67osx6huuioi

Design of compandor quantizer for Laplacian source for medium bit rate using spline approximations

Lazar Velimirovic, Zoran Peric, Jelena Nikolic, Miomir Stankovic
2012 Facta universitatis - series Electronics and Energetics  
On the basis of the obtained approximate spline functions, a quantizer designing is done. The achieved SQNR is very close to that of the model of quantizer based on the nonlinear compressor function.  ...  In this paper, the approximation of the optimal compressor function using spline function of the first and second degree is done.  ...  By designing quantizer based on approximate spline functions of the first and second degree, SQNR is obtained that is close to that of the model of quantizer based on the nonlinear optimal compressor function  ... 
doi:10.2298/fuee1201081v fatcat:u6b5vdvdbnbb3nvorsmipstihq

Design of Compandor Based on Approximate the First-Degree Spline Function

L. Velimirovic, Z. Peric, M. Stankovic, J. Nikolic
2013 Elektronika ir Elektrotechnika  
1 Abstract-In this paper, the approximation of the optimal compressor function using spline function of the first-degree is done.  ...  For the companding quantizer designed on the basis of the approximative spline function of the first-degree, the support region is numerically optimized to provide the minimum of the total distortion for  ...  DESIGN OF COMPANDOR BASED ON APPROXIMATE THE FIRST-DEGREE SPLINE FUNCTION This section provides us with a detailed description of the scalar compandor designed according the approximative spline function  ... 
doi:10.5755/j01.eee.19.10.5911 fatcat:j2nzxoba7ffavfl6e5stsodscm

Design of Compandor Based on Approximate the First-Degree Spline Function [article]

Lazar Velimirovic, Zoran Peric, Miomir Stankovic, Jelena Nikolic
2013 arXiv   pre-print
In this paper, the approximation of the optimal compressor function using spline function of the first-degree is done.  ...  For the companding quantizer designed on the basis of the approximative spline function of the first-degree, the support region is numerically optimized to provide the minimum of the total distortion for  ...  ACKNOWLEDGMENT This work is partially supported by Serbian Ministry of Education and Science through Mathematical Institute of Serbian Academy of Sciences and Arts (Project III44006) and by Serbian Ministry  ... 
arXiv:1301.5434v1 fatcat:5ijwdvikp5fjnetwapbrbcudsq

Design of Switched Quantizers and Speech Coding Based on Quasi-Logarithmic Compandor

Nikola J. Vucic, Zoran H. Peric, Goran M. Petkovic
2018 Elektronika ir Elektrotechnika  
For each subrange a separate quantizer is designed, with its support region's amplitude. The optimal amplitude is numerically determined, whereby a single criterion is obtaining the maximal SQNR.  ...  Simpler compandor directly affects the complexity of hardware realization and expense of given solution, but, on the other hand, also brings to weaker performances.  ...  QL compandor is characterized with its nonlinear compression function, and PU compandor with linear approximation, i.e. linear splines, between samples.  ... 
doi:10.5755/j01.eie.24.6.22295 fatcat:rftdgnro4rgh3mu2y2d2xkrcv4

Design of companding quantizer for Laplacian source using the approximation of probability density function [article]

Lazar Velimirovic, Zoran Peric, Miomir Stankovic, Nikola Simic
2012 arXiv   pre-print
On the basis of compressor function formed in this way, piecewise linear and piecewise uniform companding quantizer are designed.  ...  For the probability density function approximated in these ways, a compressor function is formed.  ...  ACKNOWLEDGEMENT This work is partially supported by Serbian Ministry of Education and Science through Mathematical Institute of Serbian Academy of Sciences and Arts (Project III44006) and by Serbian Ministry  ... 
arXiv:1212.2144v1 fatcat:tonft237vnbqjgxkgulladick4

Forward Adaptive Dual-Mode Quantizer Based on the First-Degree Spline Approximation and Embedded G.711 Codec

Z. Peric, J. Nikolic, B. Denic, V. Despotovic
2019 Radioengineering  
In this paper, we propose a novel model of dualmode quantizer that combines the restricted and unrestricted forward adaptive piecewise linear scalar quantizers based on the first degree-spline functions  ...  In particular, in our novel model we utilize G.711 codec due to the compatibility reasons and we develop one completely novel model of restricted quantizer based on the first-degree spline approximation  ...  Acknowledgments This work was supported in part by the Ministry of Education and Science of the Republic of Serbia, grant no. TR32035 and TR32051 within the Technological Development Program.  ... 
doi:10.13164/re.2019.0729 fatcat:xo64ayqlnfaihgjk3qubku6p5a