Title
Sparsity and cosparsity for audio declipping: a flexible non-convex approach
Abstract
This work investigates the empirical performance of the sparse synthesis versus sparse analysis regularization for the ill-posed inverse problem of audio declipping. We develop a versatile non-convex heuristics which can be readily used with both data models. Based on this algorithm, we report that, in most cases, the two models perform almost similarly in terms of signal enhancement. However, the analysis version is shown to be amenable for real time audio processing, when certain analysis operators are considered. Both versions outperform state-of-the-art methods in the field, especially for the severely saturated signals.
Year
DOI
Venue
2015
10.1007/978-3-319-22482-4_28
LVA/ICA
Keywords
Field
DocType
Clipping,Audio,Sparse,Cosparse,Non-convex,Real-time
Data modeling,Computer science,Sparse approximation,Algorithm,Speech recognition,Regular polygon,Heuristics,Regularization (mathematics),Operator (computer programming),Inverse problem,Audio signal processing
Journal
Volume
ISSN
ISBN
abs/1506.01830
0302-9743
978-3-319-22481-7
Citations 
PageRank 
References 
10
0.64
12
Authors
3
Name
Order
Citations
PageRank
Srdjan Kitic1313.06
Nancy Bertin261534.57
Rémi Gribonval3120783.59