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http://dx.doi.org/10.5909/JBE.2016.21.3.357

A Study on the Variable Transmission of xHE-AAC Audio Frame  

Lee, Bongho (Electronics Telecommunications Research Institute)
Yang, Kyutae (Electronics Telecommunications Research Institute)
Lim, Hyoungsoo (Electronics Telecommunications Research Institute)
Hur, Namho (Electronics Telecommunications Research Institute)
Publication Information
Journal of Broadcast Engineering / v.21, no.3, 2016 , pp. 357-368 More about this Journal
Abstract
In DAB+, HE-AAC v2 codec is applied for the fixed rate transmission of audio stream. In case that xHE-AAC codec including USAC, a more efficiency is expected when the variable frame is used in a given same bandwidth compared to the fixed frame transmission. For this to be realized, audio streams need to be multiplexed in a sub-channel before transmission, then a method is required to identify the border of each audio frames. In this paper, the toggled sync byte and additional identification field being sequentially placed between AU borders are proposed in order to deal with the AU border identification. In addition, the Reed-Solomon based error correction code which is compliant to DAB+ is proposed.
Keywords
Digital radio; DAB+; HE-AAC v2; xHE-AAC; FEC;
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  • Reference
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