Perceptually transparent audio compression based on a variable bit rate AAC coder

被引：0
|
作者：
Szwabe, A [1 ]
Jedrzejek, C [1 ]
机构：
[1] Poznan Tech Univ, Inst Elect & Telecommun, PL-60965 Poznan, Poland
来源：
PROCEEDINGS EC-VIP-MC 2003, VOLS 1 AND 2 | 2003年
关键词：
audio coding; MPEG Audio; AAC; VBR; perceptual transparency;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The paper presents an implementation of a perceptually transparent variable bit rate (VBR) audio coder that complies with the MPEG-4 Advanced Audio Coding (AAC) standard. The coder is based on the MPEG-4 Reference Software source code of CBR coder. With small modifications in the reference source code a coder guaranteeing perceptual transparency is achieved at compression ratios considerably better than that of the reference CBR coder. Comparison tests indicate that files generated by the perceptually transparent VBR coder applied to a standard set of test items are considerably smaller (in average 24%) than the smallest CBR files of the same quality.
引用
收藏
页码：685 / 690
页数：6
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