Audio Dequantization Using (Co)Sparse (Non)Convex Methods

The paper deals with the hitherto neglected topic of audio dequantization. It reviews the state-of-the-art sparsity-based approaches and proposes several new methods. Convex as well as non-convex approaches are included, and all the presented formulations come in both the synthesis and analysis vari...

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Bibliographic Details
Main Authors: Zaviska, Pavel, Rajmic, Pavel, Mokry, Ondrej
Format: Conference Proceeding
Language:English
Subjects:
Acoustics
Audio dequantization
Conferences
convex
cosparsity
evaluation
Measurement
nonconvex
perception
Quantization (signal)
Signal to noise ratio
sparsity
Speech processing
Time-frequency analysis
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Summary:The paper deals with the hitherto neglected topic of audio dequantization. It reviews the state-of-the-art sparsity-based approaches and proposes several new methods. Convex as well as non-convex approaches are included, and all the presented formulations come in both the synthesis and analysis variants. In the experiments the methods are evaluated using the signal-to-distortion ratio (SDR) and PEMO-Q, a perceptually motivated metric.
ISSN:2379-190X
DOI:10.1109/ICASSP39728.2021.9414637