Bruno Defraene, Naim Mansour, S. D. Hertogh, T. Waterschoot, M. Diehl, M. Moonen
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引用次数: 56
摘要
在许多音频应用中,恢复被截断的音频信号(通常称为衰落)对于提高音频质量水平是很重要的。本文基于压缩感知(CS)理论和人类听觉感知特性,提出了一种新的衰落算法。使用CS框架将衰落表述为一个稀疏信号恢复问题。利用听觉感知知识,设计了一种新的感知压缩感知(PCS)框架。提出了一种基于pc的衰落算法,该算法采用$\ well _{1}$范数类型重构。对比客观和主观评价实验表明,与基于cs的衰落算法相比,本文提出的基于pcs的衰落算法的音频质量有显著提高。
Declipping of Audio Signals Using Perceptual Compressed Sensing
The restoration of clipped audio signals, commonly known as declipping, is important to achieve an improved level of audio quality in many audio applications. In this paper, a novel declipping algorithm is presented, jointly based on the theory of compressed sensing (CS) and on well-established properties of human auditory perception. Declipping is formulated as a sparse signal recovery problem using the CS framework. By additionally exploiting knowledge of human auditory perception, a novel perceptual compressed sensing (PCS) framework is devised. A PCS-based declipping algorithm is proposed which uses $\ell _{1}$-norm type reconstruction. Comparative objective and subjective evaluation experiments reveal a significant audio quality increase for the proposed PCS-based declipping algorithm compared to CS-based declipping algorithms.
期刊介绍:
The IEEE Transactions on Audio, Speech and Language Processing covers the sciences, technologies and applications relating to the analysis, coding, enhancement, recognition and synthesis of audio, music, speech and language. In particular, audio processing also covers auditory modeling, acoustic modeling and source separation. Speech processing also covers speech production and perception, adaptation, lexical modeling and speaker recognition. Language processing also covers spoken language understanding, translation, summarization, mining, general language modeling, as well as spoken dialog systems.