Entropy Coder for Audio Signals

In the paper an effective entropy coder designed for coding of prediction errors of audio signals is presented. The coder is implemented inside a greater structure, which signal modeling part is a lossless coding backward adaptation algorithm consisting of cascaded Ordinary Least Squares (OLS), thre...

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Bibliographic Details
Published in:International Journal of Electronics and Telecommunications Vol. 61; no. 2; pp. 219 - 224
Main Authors: Ulacha, Grzegorz, Stasinski, Ryszard
Format: Journal Article
Language:English
Published: Warsaw De Gruyter Open 01.06.2015
Polish Academy of Sciences
Subjects:
arithmetic code
entropy coding
Golomb code
lossless audio coding
NLMS
OLS
prediction error bias
ISSN:2300-1933, 2081-8491, 2300-1933
Online Access:Get full text
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Summary:In the paper an effective entropy coder designed for coding of prediction errors of audio signals is presented. The coder is implemented inside a greater structure, which signal modeling part is a lossless coding backward adaptation algorithm consisting of cascaded Ordinary Least Squares (OLS), three Normalized Least Mean Square (NLMS), and prediction error bias correction sections. The technique performance is compared to that of four other lossless codecs, including MPEG-4 Audio Lossless (ALS) one, and it is shown that indeed, on the average the new method is the best. The entropy coder is an advanced context adaptive Golomb one followed by two context adaptive arithmetic coders.
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content type line 14
ISSN:2300-1933
2081-8491
2300-1933
DOI:10.1515/eletel-2015-0029