Compression artifacts in perceptual audio coding

被引：36

作者：

Liu, Chi-Min ^{[1
]}

Hsu, Han-Wen ^{[1
]}

Lee, Wen-Chieh ^{[1
]}

机构：

[1] Natl Chian Tung Univ, Dept Comp Sci, Hsinchu 30010, Taiwan

来源：

IEEE TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING | 2008年 / 16卷 / 04期

关键词：

advanced audio coding (AAC); artifacts; perceptual audio coding; parametric stereo (PS); spectral band replication (SBR);

D O I：

10.1109/TASL.2008.918979

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Perceptual audio coding achieves a high compression ratio by exploiting the perceptual irrelevance and data redundancies. By using advanced and sophisticated signal processing methods, perceptual coding has generated artifacts that are quite different from the traditional distortions. A new audio technology becomes mature through the successful modeling, measuring, and control on the artifacts incurred from the technology. With the advance of new coding modules in advanced audio coding (AAC), spectral band replication (SBR), and parametric coding, the incurred artifacts are far more difficult to model, measure, and control than those caused by previous encoding systems like pulse code modulation. This paper models the audible artifacts through the time-frequency diagrams, considers the artifacts-susceptible music types, and analyzes the critical encoding technologies incurring these, artifacts.

引用

页码：681 / 695

页数：15