Novel Ideas for Lossless Audio Coding

被引：2

作者：

Ulacha, Grzegorz ^{[1
]}

Stasinski, Ryszard ^{[2
]}

机构：

[1] West Pomeranian Univ Technol, Dept Comp Sci, Zolnierska 49, PL-71210 Szczecin, Poland

[2] Poznan Univ Tech, Fac Elect & Commun, PL-60965 Poznan, Poland

来源：

INTERNATIONAL JOURNAL OF ELECTRONICS AND TELECOMMUNICATIONS | 2013年 / 59卷 / 01期

关键词：

Lossless audio coding; context coding; LS predictors; MMSE; MMAE; zero-order entropy;

D O I：

10.2478/eletel-2013-0002

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Novel ideas for lossless audio coding analyzed in the paper are linked with forward predictor adaptation, and concern optimization of predictors on the basis of zero-order entropy and MMAE criterions, and context sound coding. Direct use of the former criterion is linked with exponential growth of optimization procedure, hence, a suboptimal algorithm having polynomial complexity is proposed. It is shown that on average the new types of predictors are better than those obtained by MMSE technique, while two-and three context systems are on average better than a single predictor one. It also appears that 7-bit PARCOR coefficients in the MPEG-4 ALS standard have insufficient precision for some predictor length, and that for very long frames coding results improve with the predictor rank practically in unlimited way.

引用

页码：17 / 23

页数：7

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