Non-stationary signal parametric modeling techniques with an application to low bit rate audio coding
Non-stationary signal parametric modeling techniques with an application to low bit rate audio coding
复制标题
非平稳信号参数建模技术在低比特率音频编码中的应用
DOI：
10.1109/icosp.2002.1181082
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Nicolas Moreau
中科院分区：
文献类型：
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作者：
Remy Boyer;S. Essid;Nicolas Moreau
低比特率音频编码通常依赖于傅立叶表示，尽管它在瞬态信号建模方面存在局限性。本研究提出了可替代的分解和扩展策略，从而导致更准确的建模。考虑了子空间分解方法和原子分解方法两类方法及其性能，提出了一种适用于低比特率编码的音频建模方案。
Low bit rate audio coding often relies on Fourier representation despite its limitations for transient signal modeling. This study proposes alternative decompositions and expansion strategies that lead to more accurate modeling. Two classes of methods are considered, subspace decomposition methods, and atomic decomposition methods and their performances are compiled to propose an audio modeling scheme amenable to low bit rate coding.