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Open AccessArticle

A High Efficiency Multistage Coder for Lossless Audio Compression using OLS+ and CDCCR Method

Faculty of Computer Science and Information Technology, West Pomeranian University of Technology, ul. Żołnierska 49, 71-210 Szczecin, Poland
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Appl. Sci. 2019, 9(23), 5218; https://doi.org/10.3390/app9235218
Received: 14 October 2019 / Revised: 24 November 2019 / Accepted: 28 November 2019 / Published: 30 November 2019
In this paper, the improvement of the cascaded prediction method was presented. Three types of main predictor block with different levels of complexity were compared, including two complex prediction methods with backward adaptation, i.e., extension Active Level Classification Model (ALCM+) and extended Ordinary Least Square (OLS+). Our own approach to implementation of the effective context-dependent constant component removal block is also presented. Additionally, the improved adaptive arithmetic coder with short, medium and long-term adaptation was presented, and the experiment was carried out comparing the results with other known lossless audio coders against which our method obtained the best efficiency. View Full-Text
Keywords: adaptive arithmetic coder; cascaded prediction; context-dependent constant component removing; extended active level classification model; Least Mean Square adaptive arithmetic coder; cascaded prediction; context-dependent constant component removing; extended active level classification model; Least Mean Square
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Ulacha, G.; Wernik, C. A High Efficiency Multistage Coder for Lossless Audio Compression using OLS+ and CDCCR Method. Appl. Sci. 2019, 9, 5218.

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