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See detailDual-mode quasi-logarithmic quantizer with embedded G.711 codec
Denic, Bojan; Peric, Zoran; Despotovic, Vladimir UL et al

in Journal of Electrical Engineering (2018), 69(1), 46-51

The G.711 codec has been accepted as a standard for high quality coding in many applications. A dual-mode quantizer, which combines the nonlinear logarithmic quantizer for restricted input signals and G ... [more ▼]

The G.711 codec has been accepted as a standard for high quality coding in many applications. A dual-mode quantizer, which combines the nonlinear logarithmic quantizer for restricted input signals and G.711 quantizer for unrestricted input signals is proposed in this paper. The parameters of the proposed quantizer are optimized, where the minimal distortion is used as the criterion. It is shown that the optimized version of the proposed quantizer provides 5.4 dB higher SQNR (Signal to Quantization Noise Ratio) compared to G.711 quantizer, or equivalently it performs savings in the bit rate of approximately 0.9 bit/sample for the same signal quality. Although the complexity is slightly increased, we believe that due to the superior performance it can be successfully implemented for high-quality quantization. [less ▲]

Detailed reference viewed: 80 (3 UL)
Peer Reviewed
See detailEnhancement of the Schottky Barrier Height on n-InGaAs by Thin InP Interlayers
Kordoš, P.; Marso, Michel UL; Lüth, H.

in Journal of Electrical Engineering (1992), 44(1992), 367-371

Detailed reference viewed: 47 (1 UL)