Paper Info
Title
A perceptually enhanced Scalable-to-Lossless audio coding scheme and a trellis-based approach for its optimization
Abstract
Scalable-to-Lossless (SLS) audio compression, as standardized by MPEG, provides a lossy base layer compatible with the Advanced Audio Coding (AAC) format, ensuring state-of-the-art quality in the base layer, and additional fine grained enhancements tha t even- tually provide a lossless compressed version of the signal. While SLS offers highly efficient lossless compression, the perce ptual quality of its intermediate lossy layers has been observed t o be suboptimal. This paper proposes a modified SLS audio coding scheme that provides enhanced perceptual quality at an interme- diate bit-rate, at the expense of an additional parameter pe r fre- quency band as side-information. This scheme when coupled with a trellis-based optimization algorithm is demonstrated to outper- form, in terms of quality at the intermediate bit-rate, both stan- dard SLS and a recent perceptually enhanced variant, with mini- mal degradation in lossless coding performance.
Year
DOI
Venue
2009
10.1109/ASPAA.2009.5346480
New Paltz, NY
Keywords
Field
DocType
audio coding,error statistics,optimisation,advanced audio coding format,audio compression,intermediate bit-rate,perceptually enhanced scalable-to-lossless audio coding scheme,trellis-based optimization algorithm,Scalable audio coding,lossless audio coding,rate-distortion optimization,trellis
Lossy compression,Computer science,Transform coding,Electronic engineering,Coding (social sciences),Advanced Audio Coding,Data compression,Dynamic range compression,Rate–distortion optimization,Lossless compression
Conference
ISSN
ISBN
Citations 
1931-1168 E-ISBN : 978-1-4244-3679-8
978-1-4244-3679-8
2
PageRank 
References 
Authors
0.46
4
3
Name
Order
Citations
PageRank
Emmanuel Ravelli1384.70
Vinay Melkote2617.89
Kenneth Rose31261119.38