A Window Switching Algorithm for AVS Audio Coding

被引：1

作者：

Chen Shuixian ^{[1
]}

Ai Haojun ^{[1
]}

Hu Ruimin ^{[1
]}

Deng Guiping ^{[1
]}

机构：

[1] Wuhan Univ, Natl Engn Res Ctr Multimedia Software, Key Lab Multimedia & Network Commun Engn, Comp Sch, Wuhan 430072, Hubei, Peoples R China

来源：

2007 INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-15 | 2007年

关键词：

window switching; transient detection; audio coding; IntMDCT; AVS audio;

D O I：

10.1109/WICOM.2007.717

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In this paper, we present a window switching algorithm employed in A VS (Audio Video coding Standard of China) generic audio coding. The algorithm - Energy and Unpredictability Measure based Window Switching Decision (ENUPM-WSD) - achieves high performance to complexity ratio by taking the advantages of both the low complexity 0 energy based decision in time domain and the high accuracy of unpredictability based decision in frequency domain. It significantly improves encoded audio quality, especially those with large transient portions, while preserves low average computational complexity in A VS generic audio encoder. Due to the merits, it is accepted as a recommendation module of the A VS audio standard.

引用

页码：2889 / 2892

页数：4

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